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authorTrond Myklebust <Trond.Myklebust@netapp.com>2010-03-05 15:46:18 -0500
committerTrond Myklebust <Trond.Myklebust@netapp.com>2010-03-05 15:46:18 -0500
commit3fa04ecd72780da31ba8b329e148179bc24a9c7d (patch)
treef5d462fd4aee086952d18f159f737c450ab46b3b /fs
parent180b62a3d837613fcac3ce89576526423926c3c3 (diff)
parent1cda707d52e51a6cafac0aef12d2bd7052d572e6 (diff)
downloadlinux-3fa04ecd72780da31ba8b329e148179bc24a9c7d.tar.bz2
Merge branch 'writeback-for-2.6.34' into nfs-for-2.6.34
Diffstat (limited to 'fs')
-rw-r--r--fs/adfs/adfs.h2
-rw-r--r--fs/adfs/inode.c5
-rw-r--r--fs/affs/affs.h3
-rw-r--r--fs/affs/inode.c2
-rw-r--r--fs/afs/internal.h1
-rw-r--r--fs/afs/super.c1
-rw-r--r--fs/afs/write.c21
-rw-r--r--fs/autofs4/autofs_i.h7
-rw-r--r--fs/autofs4/dev-ioctl.c11
-rw-r--r--fs/autofs4/expire.c6
-rw-r--r--fs/autofs4/inode.c63
-rw-r--r--fs/autofs4/root.c474
-rw-r--r--fs/bfs/inode.c5
-rw-r--r--fs/bio.c9
-rw-r--r--fs/btrfs/ctree.h2
-rw-r--r--fs/btrfs/file.c6
-rw-r--r--fs/btrfs/inode.c4
-rw-r--r--fs/cachefiles/namei.c12
-rw-r--r--fs/cifs/CHANGES5
-rw-r--r--fs/cifs/cifsfs.h2
-rw-r--r--fs/cifs/cifsglob.h3
-rw-r--r--fs/cifs/cifspdu.h6
-rw-r--r--fs/cifs/cifsproto.h7
-rw-r--r--fs/cifs/cifssmb.c360
-rw-r--r--fs/cifs/connect.c38
-rw-r--r--fs/cifs/file.c4
-rw-r--r--fs/cifs/inode.c15
-rw-r--r--fs/cifs/misc.c2
-rw-r--r--fs/cifs/readdir.c8
-rw-r--r--fs/cifs/sess.c11
-rw-r--r--fs/cifs/xattr.c8
-rw-r--r--fs/compat_ioctl.c9
-rw-r--r--fs/dcache.c70
-rw-r--r--fs/debugfs/inode.c2
-rw-r--r--fs/dlm/ast.c74
-rw-r--r--fs/dlm/ast.h4
-rw-r--r--fs/dlm/debug_fs.c2
-rw-r--r--fs/dlm/dlm_internal.h10
-rw-r--r--fs/dlm/lock.c120
-rw-r--r--fs/dlm/lockspace.c14
-rw-r--r--fs/dlm/user.c10
-rw-r--r--fs/dlm/user.h4
-rw-r--r--fs/exec.c20
-rw-r--r--fs/exofs/common.h39
-rw-r--r--fs/exofs/exofs.h55
-rw-r--r--fs/exofs/inode.c198
-rw-r--r--fs/exofs/ios.c575
-rw-r--r--fs/exofs/super.c121
-rw-r--r--fs/ext2/ext2.h2
-rw-r--r--fs/ext2/inode.c11
-rw-r--r--fs/ext3/inode.c4
-rw-r--r--fs/ext4/balloc.c35
-rw-r--r--fs/ext4/block_validity.c4
-rw-r--r--fs/ext4/dir.c14
-rw-r--r--fs/ext4/ext4.h110
-rw-r--r--fs/ext4/ext4_jbd2.c4
-rw-r--r--fs/ext4/ext4_jbd2.h24
-rw-r--r--fs/ext4/extents.c260
-rw-r--r--fs/ext4/file.c10
-rw-r--r--fs/ext4/fsync.c2
-rw-r--r--fs/ext4/ialloc.c32
-rw-r--r--fs/ext4/inode.c465
-rw-r--r--fs/ext4/ioctl.c12
-rw-r--r--fs/ext4/mballoc.c73
-rw-r--r--fs/ext4/mballoc.h9
-rw-r--r--fs/ext4/migrate.c35
-rw-r--r--fs/ext4/move_extent.c36
-rw-r--r--fs/ext4/namei.c63
-rw-r--r--fs/ext4/resize.c102
-rw-r--r--fs/ext4/super.c342
-rw-r--r--fs/ext4/xattr.c56
-rw-r--r--fs/fat/inode.c9
-rw-r--r--fs/file.c2
-rw-r--r--fs/fs-writeback.c22
-rw-r--r--fs/fuse/dev.c30
-rw-r--r--fs/gfs2/aops.c4
-rw-r--r--fs/gfs2/bmap.c2
-rw-r--r--fs/gfs2/glock.c75
-rw-r--r--fs/gfs2/glock.h7
-rw-r--r--fs/gfs2/glops.c16
-rw-r--r--fs/gfs2/incore.h5
-rw-r--r--fs/gfs2/inode.c6
-rw-r--r--fs/gfs2/lock_dlm.c5
-rw-r--r--fs/gfs2/lops.c4
-rw-r--r--fs/gfs2/main.c28
-rw-r--r--fs/gfs2/meta_io.c46
-rw-r--r--fs/gfs2/meta_io.h12
-rw-r--r--fs/gfs2/ops_fstype.c6
-rw-r--r--fs/gfs2/ops_inode.c113
-rw-r--r--fs/gfs2/super.c32
-rw-r--r--fs/gfs2/sys.c2
-rw-r--r--fs/gfs2/util.c1
-rw-r--r--fs/gfs2/util.h1
-rw-r--r--fs/hfs/hfs_fs.h2
-rw-r--r--fs/hfs/inode.c2
-rw-r--r--fs/hfsplus/super.c3
-rw-r--r--fs/hpfs/anode.c2
-rw-r--r--fs/hpfs/dentry.c14
-rw-r--r--fs/hpfs/dir.c14
-rw-r--r--fs/hpfs/dnode.c21
-rw-r--r--fs/hpfs/ea.c7
-rw-r--r--fs/hpfs/hpfs_fn.h30
-rw-r--r--fs/hpfs/inode.c4
-rw-r--r--fs/hpfs/map.c6
-rw-r--r--fs/hpfs/name.c21
-rw-r--r--fs/hpfs/namei.c75
-rw-r--r--fs/hppfs/hppfs.c2
-rw-r--r--fs/internal.h2
-rw-r--r--fs/jbd2/checkpoint.c1
-rw-r--r--fs/jbd2/commit.c13
-rw-r--r--fs/jbd2/journal.c132
-rw-r--r--fs/jbd2/transaction.c43
-rw-r--r--fs/jfs/inode.c5
-rw-r--r--fs/jfs/jfs_inode.h2
-rw-r--r--fs/libfs.c77
-rw-r--r--fs/locks.c5
-rw-r--r--fs/minix/inode.c8
-rw-r--r--fs/namei.c575
-rw-r--r--fs/namespace.c53
-rw-r--r--fs/nfs/Kconfig3
-rw-r--r--fs/nfs/dir.c2
-rw-r--r--fs/nfs/direct.c3
-rw-r--r--fs/nfs/fscache.c9
-rw-r--r--fs/nfs/inode.c95
-rw-r--r--fs/nfs/internal.h2
-rw-r--r--fs/nfs/iostat.h4
-rw-r--r--fs/nfs/mount_clnt.c2
-rw-r--r--fs/nfs/nfs2xdr.c2
-rw-r--r--fs/nfs/nfs4proc.c8
-rw-r--r--fs/nfs/nfs4xdr.c6
-rw-r--r--fs/nfs/symlink.c2
-rw-r--r--fs/nfs/write.c250
-rw-r--r--fs/nfsctl.c5
-rw-r--r--fs/nfsd/nfs4xdr.c12
-rw-r--r--fs/nfsd/vfs.c7
-rw-r--r--fs/nilfs2/dat.c3
-rw-r--r--fs/nilfs2/dir.c14
-rw-r--r--fs/nilfs2/ioctl.c66
-rw-r--r--fs/nilfs2/namei.c13
-rw-r--r--fs/nilfs2/nilfs.h4
-rw-r--r--fs/nilfs2/recovery.c41
-rw-r--r--fs/nilfs2/segbuf.c18
-rw-r--r--fs/nilfs2/segbuf.h5
-rw-r--r--fs/nilfs2/segment.c120
-rw-r--r--fs/nilfs2/segment.h2
-rw-r--r--fs/nilfs2/super.c15
-rw-r--r--fs/nilfs2/the_nilfs.c38
-rw-r--r--fs/nilfs2/the_nilfs.h3
-rw-r--r--fs/notify/inotify/inotify_user.c59
-rw-r--r--fs/ntfs/dir.c2
-rw-r--r--fs/ntfs/file.c2
-rw-r--r--fs/ntfs/inode.c2
-rw-r--r--fs/ntfs/inode.h4
-rw-r--r--fs/ntfs/super.c8
-rw-r--r--fs/ocfs2/Makefile1
-rw-r--r--fs/ocfs2/alloc.c5
-rw-r--r--fs/ocfs2/aops.c5
-rw-r--r--fs/ocfs2/cluster/masklog.c1
-rw-r--r--fs/ocfs2/cluster/masklog.h7
-rw-r--r--fs/ocfs2/dir.c2
-rw-r--r--fs/ocfs2/dlm/Makefile3
-rw-r--r--fs/ocfs2/dlm/dlmrecovery.c2
-rw-r--r--fs/ocfs2/dlmfs/Makefile5
-rw-r--r--fs/ocfs2/dlmfs/dlmfs.c (renamed from fs/ocfs2/dlm/dlmfs.c)127
-rw-r--r--fs/ocfs2/dlmfs/dlmfsver.c (renamed from fs/ocfs2/dlm/dlmfsver.c)0
-rw-r--r--fs/ocfs2/dlmfs/dlmfsver.h (renamed from fs/ocfs2/dlm/dlmfsver.h)0
-rw-r--r--fs/ocfs2/dlmfs/userdlm.c (renamed from fs/ocfs2/dlm/userdlm.c)308
-rw-r--r--fs/ocfs2/dlmfs/userdlm.h (renamed from fs/ocfs2/dlm/userdlm.h)16
-rw-r--r--fs/ocfs2/dlmglue.c284
-rw-r--r--fs/ocfs2/file.c13
-rw-r--r--fs/ocfs2/ioctl.h6
-rw-r--r--fs/ocfs2/localalloc.c2
-rw-r--r--fs/ocfs2/ocfs2.h32
-rw-r--r--fs/ocfs2/ocfs2_fs.h57
-rw-r--r--fs/ocfs2/ocfs2_ioctl.h79
-rw-r--r--fs/ocfs2/ocfs2_lockingver.h2
-rw-r--r--fs/ocfs2/refcounttree.c6
-rw-r--r--fs/ocfs2/stack_o2cb.c37
-rw-r--r--fs/ocfs2/stack_user.c49
-rw-r--r--fs/ocfs2/stackglue.c98
-rw-r--r--fs/ocfs2/stackglue.h95
-rw-r--r--fs/ocfs2/suballoc.c171
-rw-r--r--fs/ocfs2/suballoc.h1
-rw-r--r--fs/ocfs2/super.c10
-rw-r--r--fs/ocfs2/xattr.c2182
-rw-r--r--fs/omfs/inode.c10
-rw-r--r--fs/open.c2
-rw-r--r--fs/partitions/check.c7
-rw-r--r--fs/pnode.c28
-rw-r--r--fs/pnode.h5
-rw-r--r--fs/proc/array.c2
-rw-r--r--fs/proc/base.c40
-rw-r--r--fs/proc/generic.c5
-rw-r--r--fs/proc/kmsg.c14
-rw-r--r--fs/proc/proc_devtree.c7
-rw-r--r--fs/proc/root.c6
-rw-r--r--fs/reiserfs/inode.c6
-rw-r--r--fs/seq_file.c130
-rw-r--r--fs/squashfs/Makefile2
-rw-r--r--fs/squashfs/block.c76
-rw-r--r--fs/squashfs/cache.c1
-rw-r--r--fs/squashfs/decompressor.c68
-rw-r--r--fs/squashfs/decompressor.h55
-rw-r--r--fs/squashfs/dir.c1
-rw-r--r--fs/squashfs/export.c1
-rw-r--r--fs/squashfs/file.c1
-rw-r--r--fs/squashfs/fragment.c1
-rw-r--r--fs/squashfs/id.c1
-rw-r--r--fs/squashfs/inode.c1
-rw-r--r--fs/squashfs/namei.c1
-rw-r--r--fs/squashfs/squashfs.h8
-rw-r--r--fs/squashfs/squashfs_fs.h6
-rw-r--r--fs/squashfs/squashfs_fs_sb.h40
-rw-r--r--fs/squashfs/super.c49
-rw-r--r--fs/squashfs/symlink.c1
-rw-r--r--fs/squashfs/zlib_wrapper.c150
-rw-r--r--fs/super.c21
-rw-r--r--fs/sysfs/inode.c35
-rw-r--r--fs/sysv/inode.c10
-rw-r--r--fs/sysv/sysv.h2
-rw-r--r--fs/ubifs/dir.c2
-rw-r--r--fs/ubifs/file.c8
-rw-r--r--fs/ubifs/super.c2
-rw-r--r--fs/udf/balloc.c2
-rw-r--r--fs/udf/dir.c4
-rw-r--r--fs/udf/inode.c6
-rw-r--r--fs/udf/namei.c20
-rw-r--r--fs/udf/symlink.c10
-rw-r--r--fs/udf/udfdecl.h2
-rw-r--r--fs/ufs/dir.c10
-rw-r--r--fs/ufs/inode.c5
-rw-r--r--fs/ufs/ufs.h6
-rw-r--r--fs/xfs/Makefile2
-rw-r--r--fs/xfs/linux-2.6/kmem.c56
-rw-r--r--fs/xfs/linux-2.6/kmem.h21
-rw-r--r--fs/xfs/linux-2.6/xfs_acl.c11
-rw-r--r--fs/xfs/linux-2.6/xfs_buf.c320
-rw-r--r--fs/xfs/linux-2.6/xfs_buf.h52
-rw-r--r--fs/xfs/linux-2.6/xfs_fs_subr.c2
-rw-r--r--fs/xfs/linux-2.6/xfs_ioctl.c21
-rw-r--r--fs/xfs/linux-2.6/xfs_ioctl.h12
-rw-r--r--fs/xfs/linux-2.6/xfs_ioctl32.c4
-rw-r--r--fs/xfs/linux-2.6/xfs_iops.c4
-rw-r--r--fs/xfs/linux-2.6/xfs_lrw.c62
-rw-r--r--fs/xfs/linux-2.6/xfs_lrw.h3
-rw-r--r--fs/xfs/linux-2.6/xfs_super.c175
-rw-r--r--fs/xfs/linux-2.6/xfs_sync.c186
-rw-r--r--fs/xfs/linux-2.6/xfs_sync.h1
-rw-r--r--fs/xfs/linux-2.6/xfs_trace.h81
-rw-r--r--fs/xfs/linux-2.6/xfs_xattr.c27
-rw-r--r--fs/xfs/quota/xfs_dquot.c47
-rw-r--r--fs/xfs/quota/xfs_dquot_item.c99
-rw-r--r--fs/xfs/quota/xfs_dquot_item.h4
-rw-r--r--fs/xfs/quota/xfs_qm.c40
-rw-r--r--fs/xfs/quota/xfs_qm_bhv.c2
-rw-r--r--fs/xfs/quota/xfs_qm_syscalls.c4
-rw-r--r--fs/xfs/quota/xfs_trans_dquot.c49
-rw-r--r--fs/xfs/xfs_acl.h4
-rw-r--r--fs/xfs/xfs_ag.h16
-rw-r--r--fs/xfs/xfs_alloc.c96
-rw-r--r--fs/xfs/xfs_alloc_btree.c9
-rw-r--r--fs/xfs/xfs_attr.c52
-rw-r--r--fs/xfs/xfs_attr.h3
-rw-r--r--fs/xfs/xfs_attr_leaf.c30
-rw-r--r--fs/xfs/xfs_attr_sf.h2
-rw-r--r--fs/xfs/xfs_bmap.c17
-rw-r--r--fs/xfs/xfs_bmap_btree.c2
-rw-r--r--fs/xfs/xfs_bmap_btree.h1
-rw-r--r--fs/xfs/xfs_btree.c4
-rw-r--r--fs/xfs/xfs_buf_item.c72
-rw-r--r--fs/xfs/xfs_da_btree.c4
-rw-r--r--fs/xfs/xfs_da_btree.h5
-rw-r--r--fs/xfs/xfs_dfrag.c43
-rw-r--r--fs/xfs/xfs_dfrag.h3
-rw-r--r--fs/xfs/xfs_dir2.c8
-rw-r--r--fs/xfs/xfs_dir2.h4
-rw-r--r--fs/xfs/xfs_dir2_block.c9
-rw-r--r--fs/xfs/xfs_dir2_leaf.c2
-rw-r--r--fs/xfs/xfs_dir2_node.c2
-rw-r--r--fs/xfs/xfs_dir2_node.h2
-rw-r--r--fs/xfs/xfs_dir2_sf.c2
-rw-r--r--fs/xfs/xfs_extfree_item.c4
-rw-r--r--fs/xfs/xfs_filestream.c42
-rw-r--r--fs/xfs/xfs_filestream.h28
-rw-r--r--fs/xfs/xfs_fsops.c42
-rw-r--r--fs/xfs/xfs_ialloc.c62
-rw-r--r--fs/xfs/xfs_iget.c10
-rw-r--r--fs/xfs/xfs_inode.c126
-rw-r--r--fs/xfs/xfs_inode.h11
-rw-r--r--fs/xfs/xfs_inode_item.c129
-rw-r--r--fs/xfs/xfs_inode_item.h6
-rw-r--r--fs/xfs/xfs_itable.c12
-rw-r--r--fs/xfs/xfs_log.c383
-rw-r--r--fs/xfs/xfs_log.h19
-rw-r--r--fs/xfs/xfs_log_priv.h5
-rw-r--r--fs/xfs/xfs_log_recover.c222
-rw-r--r--fs/xfs/xfs_log_recover.h23
-rw-r--r--fs/xfs/xfs_mount.c181
-rw-r--r--fs/xfs/xfs_mount.h29
-rw-r--r--fs/xfs/xfs_mru_cache.c2
-rw-r--r--fs/xfs/xfs_mru_cache.h1
-rw-r--r--fs/xfs/xfs_quota.h9
-rw-r--r--fs/xfs/xfs_rw.c155
-rw-r--r--fs/xfs/xfs_rw.h4
-rw-r--r--fs/xfs/xfs_trans.c7
-rw-r--r--fs/xfs/xfs_trans.h3
-rw-r--r--fs/xfs/xfs_trans_ail.c34
-rw-r--r--fs/xfs/xfs_trans_buf.c27
-rw-r--r--fs/xfs/xfs_types.h4
-rw-r--r--fs/xfs/xfs_vnodeops.c33
-rw-r--r--fs/xfs/xfs_vnodeops.h10
311 files changed, 8030 insertions, 6259 deletions
diff --git a/fs/adfs/adfs.h b/fs/adfs/adfs.h
index 9cc18775b832..2ff622f6f547 100644
--- a/fs/adfs/adfs.h
+++ b/fs/adfs/adfs.h
@@ -121,7 +121,7 @@ struct adfs_discmap {
/* Inode stuff */
struct inode *adfs_iget(struct super_block *sb, struct object_info *obj);
-int adfs_write_inode(struct inode *inode,int unused);
+int adfs_write_inode(struct inode *inode, struct writeback_control *wbc);
int adfs_notify_change(struct dentry *dentry, struct iattr *attr);
/* map.c */
diff --git a/fs/adfs/inode.c b/fs/adfs/inode.c
index 3f57ce4bee5d..0f5e30978135 100644
--- a/fs/adfs/inode.c
+++ b/fs/adfs/inode.c
@@ -9,6 +9,7 @@
*/
#include <linux/smp_lock.h>
#include <linux/buffer_head.h>
+#include <linux/writeback.h>
#include "adfs.h"
/*
@@ -360,7 +361,7 @@ out:
* The adfs-specific inode data has already been updated by
* adfs_notify_change()
*/
-int adfs_write_inode(struct inode *inode, int wait)
+int adfs_write_inode(struct inode *inode, struct writeback_control *wbc)
{
struct super_block *sb = inode->i_sb;
struct object_info obj;
@@ -375,7 +376,7 @@ int adfs_write_inode(struct inode *inode, int wait)
obj.attr = ADFS_I(inode)->attr;
obj.size = inode->i_size;
- ret = adfs_dir_update(sb, &obj, wait);
+ ret = adfs_dir_update(sb, &obj, wbc->sync_mode == WB_SYNC_ALL);
unlock_kernel();
return ret;
}
diff --git a/fs/affs/affs.h b/fs/affs/affs.h
index 0e40caaba456..861dae68ac12 100644
--- a/fs/affs/affs.h
+++ b/fs/affs/affs.h
@@ -175,7 +175,8 @@ extern void affs_delete_inode(struct inode *inode);
extern void affs_clear_inode(struct inode *inode);
extern struct inode *affs_iget(struct super_block *sb,
unsigned long ino);
-extern int affs_write_inode(struct inode *inode, int);
+extern int affs_write_inode(struct inode *inode,
+ struct writeback_control *wbc);
extern int affs_add_entry(struct inode *dir, struct inode *inode, struct dentry *dentry, s32 type);
/* file.c */
diff --git a/fs/affs/inode.c b/fs/affs/inode.c
index 3c4ec7d864c4..c9744d771d98 100644
--- a/fs/affs/inode.c
+++ b/fs/affs/inode.c
@@ -166,7 +166,7 @@ bad_inode:
}
int
-affs_write_inode(struct inode *inode, int unused)
+affs_write_inode(struct inode *inode, struct writeback_control *wbc)
{
struct super_block *sb = inode->i_sb;
struct buffer_head *bh;
diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index 6ece2a13bf71..c54dad4e6063 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -733,7 +733,6 @@ extern int afs_write_end(struct file *file, struct address_space *mapping,
struct page *page, void *fsdata);
extern int afs_writepage(struct page *, struct writeback_control *);
extern int afs_writepages(struct address_space *, struct writeback_control *);
-extern int afs_write_inode(struct inode *, int);
extern void afs_pages_written_back(struct afs_vnode *, struct afs_call *);
extern ssize_t afs_file_write(struct kiocb *, const struct iovec *,
unsigned long, loff_t);
diff --git a/fs/afs/super.c b/fs/afs/super.c
index e1ea1c240b6a..14f6431598ad 100644
--- a/fs/afs/super.c
+++ b/fs/afs/super.c
@@ -48,7 +48,6 @@ struct file_system_type afs_fs_type = {
static const struct super_operations afs_super_ops = {
.statfs = afs_statfs,
.alloc_inode = afs_alloc_inode,
- .write_inode = afs_write_inode,
.destroy_inode = afs_destroy_inode,
.clear_inode = afs_clear_inode,
.put_super = afs_put_super,
diff --git a/fs/afs/write.c b/fs/afs/write.c
index 5e15a21dbf9f..3bed54a294d4 100644
--- a/fs/afs/write.c
+++ b/fs/afs/write.c
@@ -585,27 +585,6 @@ int afs_writepages(struct address_space *mapping,
}
/*
- * write an inode back
- */
-int afs_write_inode(struct inode *inode, int sync)
-{
- struct afs_vnode *vnode = AFS_FS_I(inode);
- int ret;
-
- _enter("{%x:%u},", vnode->fid.vid, vnode->fid.vnode);
-
- ret = 0;
- if (sync) {
- ret = filemap_fdatawait(inode->i_mapping);
- if (ret < 0)
- __mark_inode_dirty(inode, I_DIRTY_DATASYNC);
- }
-
- _leave(" = %d", ret);
- return ret;
-}
-
-/*
* completion of write to server
*/
void afs_pages_written_back(struct afs_vnode *vnode, struct afs_call *call)
diff --git a/fs/autofs4/autofs_i.h b/fs/autofs4/autofs_i.h
index 0118d67221b2..3d283abf67d7 100644
--- a/fs/autofs4/autofs_i.h
+++ b/fs/autofs4/autofs_i.h
@@ -60,11 +60,6 @@ do { \
current->pid, __func__, ##args); \
} while (0)
-struct rehash_entry {
- struct task_struct *task;
- struct list_head list;
-};
-
/* Unified info structure. This is pointed to by both the dentry and
inode structures. Each file in the filesystem has an instance of this
structure. It holds a reference to the dentry, so dentries are never
@@ -81,7 +76,6 @@ struct autofs_info {
struct list_head active;
int active_count;
- struct list_head rehash_list;
struct list_head expiring;
@@ -104,7 +98,6 @@ struct autofs_info {
#define AUTOFS_INF_EXPIRING (1<<0) /* dentry is in the process of expiring */
#define AUTOFS_INF_MOUNTPOINT (1<<1) /* mountpoint status for direct expire */
#define AUTOFS_INF_PENDING (1<<2) /* dentry pending mount */
-#define AUTOFS_INF_REHASH (1<<3) /* dentry in transit to ->lookup() */
struct autofs_wait_queue {
wait_queue_head_t queue;
diff --git a/fs/autofs4/dev-ioctl.c b/fs/autofs4/dev-ioctl.c
index 00bf8fcb245f..c8a80dffb455 100644
--- a/fs/autofs4/dev-ioctl.c
+++ b/fs/autofs4/dev-ioctl.c
@@ -544,10 +544,9 @@ static int autofs_dev_ioctl_ismountpoint(struct file *fp,
goto out;
devid = new_encode_dev(path.mnt->mnt_sb->s_dev);
err = 0;
- if (path.dentry->d_inode &&
- path.mnt->mnt_root == path.dentry) {
+ if (path.mnt->mnt_root == path.dentry) {
err = 1;
- magic = path.dentry->d_inode->i_sb->s_magic;
+ magic = path.mnt->mnt_sb->s_magic;
}
} else {
dev_t dev = sbi->sb->s_dev;
@@ -560,10 +559,8 @@ static int autofs_dev_ioctl_ismountpoint(struct file *fp,
err = have_submounts(path.dentry);
- if (path.mnt->mnt_mountpoint != path.mnt->mnt_root) {
- if (follow_down(&path))
- magic = path.mnt->mnt_sb->s_magic;
- }
+ if (follow_down(&path))
+ magic = path.mnt->mnt_sb->s_magic;
}
param->ismountpoint.out.devid = devid;
diff --git a/fs/autofs4/expire.c b/fs/autofs4/expire.c
index 74bc9aa6df31..a796c9417fb1 100644
--- a/fs/autofs4/expire.c
+++ b/fs/autofs4/expire.c
@@ -279,7 +279,6 @@ struct dentry *autofs4_expire_direct(struct super_block *sb,
root->d_mounted--;
}
ino->flags |= AUTOFS_INF_EXPIRING;
- autofs4_add_expiring(root);
init_completion(&ino->expire_complete);
spin_unlock(&sbi->fs_lock);
return root;
@@ -407,7 +406,6 @@ found:
expired, (int)expired->d_name.len, expired->d_name.name);
ino = autofs4_dentry_ino(expired);
ino->flags |= AUTOFS_INF_EXPIRING;
- autofs4_add_expiring(expired);
init_completion(&ino->expire_complete);
spin_unlock(&sbi->fs_lock);
spin_lock(&dcache_lock);
@@ -435,7 +433,7 @@ int autofs4_expire_wait(struct dentry *dentry)
DPRINTK("expire done status=%d", status);
- if (d_unhashed(dentry) && IS_DEADDIR(dentry->d_inode))
+ if (d_unhashed(dentry))
return -EAGAIN;
return status;
@@ -475,7 +473,6 @@ int autofs4_expire_run(struct super_block *sb,
spin_lock(&sbi->fs_lock);
ino = autofs4_dentry_ino(dentry);
ino->flags &= ~AUTOFS_INF_EXPIRING;
- autofs4_del_expiring(dentry);
complete_all(&ino->expire_complete);
spin_unlock(&sbi->fs_lock);
@@ -506,7 +503,6 @@ int autofs4_do_expire_multi(struct super_block *sb, struct vfsmount *mnt,
ino->flags &= ~AUTOFS_INF_MOUNTPOINT;
}
ino->flags &= ~AUTOFS_INF_EXPIRING;
- autofs4_del_expiring(dentry);
complete_all(&ino->expire_complete);
spin_unlock(&sbi->fs_lock);
dput(dentry);
diff --git a/fs/autofs4/inode.c b/fs/autofs4/inode.c
index d0a3de247458..821b2b955dac 100644
--- a/fs/autofs4/inode.c
+++ b/fs/autofs4/inode.c
@@ -49,7 +49,6 @@ struct autofs_info *autofs4_init_ino(struct autofs_info *ino,
ino->dentry = NULL;
ino->size = 0;
INIT_LIST_HEAD(&ino->active);
- INIT_LIST_HEAD(&ino->rehash_list);
ino->active_count = 0;
INIT_LIST_HEAD(&ino->expiring);
atomic_set(&ino->count, 0);
@@ -97,63 +96,6 @@ void autofs4_free_ino(struct autofs_info *ino)
kfree(ino);
}
-/*
- * Deal with the infamous "Busy inodes after umount ..." message.
- *
- * Clean up the dentry tree. This happens with autofs if the user
- * space program goes away due to a SIGKILL, SIGSEGV etc.
- */
-static void autofs4_force_release(struct autofs_sb_info *sbi)
-{
- struct dentry *this_parent = sbi->sb->s_root;
- struct list_head *next;
-
- if (!sbi->sb->s_root)
- return;
-
- spin_lock(&dcache_lock);
-repeat:
- next = this_parent->d_subdirs.next;
-resume:
- while (next != &this_parent->d_subdirs) {
- struct dentry *dentry = list_entry(next, struct dentry, d_u.d_child);
-
- /* Negative dentry - don`t care */
- if (!simple_positive(dentry)) {
- next = next->next;
- continue;
- }
-
- if (!list_empty(&dentry->d_subdirs)) {
- this_parent = dentry;
- goto repeat;
- }
-
- next = next->next;
- spin_unlock(&dcache_lock);
-
- DPRINTK("dentry %p %.*s",
- dentry, (int)dentry->d_name.len, dentry->d_name.name);
-
- dput(dentry);
- spin_lock(&dcache_lock);
- }
-
- if (this_parent != sbi->sb->s_root) {
- struct dentry *dentry = this_parent;
-
- next = this_parent->d_u.d_child.next;
- this_parent = this_parent->d_parent;
- spin_unlock(&dcache_lock);
- DPRINTK("parent dentry %p %.*s",
- dentry, (int)dentry->d_name.len, dentry->d_name.name);
- dput(dentry);
- spin_lock(&dcache_lock);
- goto resume;
- }
- spin_unlock(&dcache_lock);
-}
-
void autofs4_kill_sb(struct super_block *sb)
{
struct autofs_sb_info *sbi = autofs4_sbi(sb);
@@ -170,15 +112,12 @@ void autofs4_kill_sb(struct super_block *sb)
/* Free wait queues, close pipe */
autofs4_catatonic_mode(sbi);
- /* Clean up and release dangling references */
- autofs4_force_release(sbi);
-
sb->s_fs_info = NULL;
kfree(sbi);
out_kill_sb:
DPRINTK("shutting down");
- kill_anon_super(sb);
+ kill_litter_super(sb);
}
static int autofs4_show_options(struct seq_file *m, struct vfsmount *mnt)
diff --git a/fs/autofs4/root.c b/fs/autofs4/root.c
index 30cc9ddf4b70..a015b49891df 100644
--- a/fs/autofs4/root.c
+++ b/fs/autofs4/root.c
@@ -104,99 +104,6 @@ static void autofs4_del_active(struct dentry *dentry)
return;
}
-static void autofs4_add_rehash_entry(struct autofs_info *ino,
- struct rehash_entry *entry)
-{
- entry->task = current;
- INIT_LIST_HEAD(&entry->list);
- list_add(&entry->list, &ino->rehash_list);
- return;
-}
-
-static void autofs4_remove_rehash_entry(struct autofs_info *ino)
-{
- struct list_head *head = &ino->rehash_list;
- struct rehash_entry *entry;
- list_for_each_entry(entry, head, list) {
- if (entry->task == current) {
- list_del(&entry->list);
- kfree(entry);
- break;
- }
- }
- return;
-}
-
-static void autofs4_remove_rehash_entrys(struct autofs_info *ino)
-{
- struct autofs_sb_info *sbi = ino->sbi;
- struct rehash_entry *entry, *next;
- struct list_head *head;
-
- spin_lock(&sbi->fs_lock);
- spin_lock(&sbi->lookup_lock);
- if (!(ino->flags & AUTOFS_INF_REHASH)) {
- spin_unlock(&sbi->lookup_lock);
- spin_unlock(&sbi->fs_lock);
- return;
- }
- ino->flags &= ~AUTOFS_INF_REHASH;
- head = &ino->rehash_list;
- list_for_each_entry_safe(entry, next, head, list) {
- list_del(&entry->list);
- kfree(entry);
- }
- spin_unlock(&sbi->lookup_lock);
- spin_unlock(&sbi->fs_lock);
- dput(ino->dentry);
-
- return;
-}
-
-static void autofs4_revalidate_drop(struct dentry *dentry,
- struct rehash_entry *entry)
-{
- struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
- struct autofs_info *ino = autofs4_dentry_ino(dentry);
- /*
- * Add to the active list so we can pick this up in
- * ->lookup(). Also add an entry to a rehash list so
- * we know when there are no dentrys in flight so we
- * know when we can rehash the dentry.
- */
- spin_lock(&sbi->lookup_lock);
- if (list_empty(&ino->active))
- list_add(&ino->active, &sbi->active_list);
- autofs4_add_rehash_entry(ino, entry);
- spin_unlock(&sbi->lookup_lock);
- if (!(ino->flags & AUTOFS_INF_REHASH)) {
- ino->flags |= AUTOFS_INF_REHASH;
- dget(dentry);
- spin_lock(&dentry->d_lock);
- __d_drop(dentry);
- spin_unlock(&dentry->d_lock);
- }
- return;
-}
-
-static void autofs4_revalidate_rehash(struct dentry *dentry)
-{
- struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
- struct autofs_info *ino = autofs4_dentry_ino(dentry);
- if (ino->flags & AUTOFS_INF_REHASH) {
- spin_lock(&sbi->lookup_lock);
- autofs4_remove_rehash_entry(ino);
- if (list_empty(&ino->rehash_list)) {
- spin_unlock(&sbi->lookup_lock);
- ino->flags &= ~AUTOFS_INF_REHASH;
- d_rehash(dentry);
- dput(ino->dentry);
- } else
- spin_unlock(&sbi->lookup_lock);
- }
- return;
-}
-
static unsigned int autofs4_need_mount(unsigned int flags)
{
unsigned int res = 0;
@@ -236,7 +143,7 @@ out:
return dcache_dir_open(inode, file);
}
-static int try_to_fill_dentry(struct dentry *dentry)
+static int try_to_fill_dentry(struct dentry *dentry, int flags)
{
struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
struct autofs_info *ino = autofs4_dentry_ino(dentry);
@@ -249,17 +156,55 @@ static int try_to_fill_dentry(struct dentry *dentry)
* Wait for a pending mount, triggering one if there
* isn't one already
*/
- DPRINTK("waiting for mount name=%.*s",
- dentry->d_name.len, dentry->d_name.name);
+ if (dentry->d_inode == NULL) {
+ DPRINTK("waiting for mount name=%.*s",
+ dentry->d_name.len, dentry->d_name.name);
- status = autofs4_wait(sbi, dentry, NFY_MOUNT);
+ status = autofs4_wait(sbi, dentry, NFY_MOUNT);
- DPRINTK("mount done status=%d", status);
+ DPRINTK("mount done status=%d", status);
- /* Update expiry counter */
- ino->last_used = jiffies;
+ /* Turn this into a real negative dentry? */
+ if (status == -ENOENT) {
+ spin_lock(&sbi->fs_lock);
+ ino->flags &= ~AUTOFS_INF_PENDING;
+ spin_unlock(&sbi->fs_lock);
+ return status;
+ } else if (status) {
+ /* Return a negative dentry, but leave it "pending" */
+ return status;
+ }
+ /* Trigger mount for path component or follow link */
+ } else if (ino->flags & AUTOFS_INF_PENDING ||
+ autofs4_need_mount(flags) ||
+ current->link_count) {
+ DPRINTK("waiting for mount name=%.*s",
+ dentry->d_name.len, dentry->d_name.name);
- return status;
+ spin_lock(&sbi->fs_lock);
+ ino->flags |= AUTOFS_INF_PENDING;
+ spin_unlock(&sbi->fs_lock);
+ status = autofs4_wait(sbi, dentry, NFY_MOUNT);
+
+ DPRINTK("mount done status=%d", status);
+
+ if (status) {
+ spin_lock(&sbi->fs_lock);
+ ino->flags &= ~AUTOFS_INF_PENDING;
+ spin_unlock(&sbi->fs_lock);
+ return status;
+ }
+ }
+
+ /* Initialize expiry counter after successful mount */
+ if (ino)
+ ino->last_used = jiffies;
+
+ spin_lock(&sbi->fs_lock);
+ ino->flags &= ~AUTOFS_INF_PENDING;
+ spin_unlock(&sbi->fs_lock);
+
+ return 0;
}
/* For autofs direct mounts the follow link triggers the mount */
@@ -313,16 +258,10 @@ static void *autofs4_follow_link(struct dentry *dentry, struct nameidata *nd)
*/
if (ino->flags & AUTOFS_INF_PENDING ||
(!d_mountpoint(dentry) && list_empty(&dentry->d_subdirs))) {
- ino->flags |= AUTOFS_INF_PENDING;
spin_unlock(&dcache_lock);
spin_unlock(&sbi->fs_lock);
- status = try_to_fill_dentry(dentry);
-
- spin_lock(&sbi->fs_lock);
- ino->flags &= ~AUTOFS_INF_PENDING;
- spin_unlock(&sbi->fs_lock);
-
+ status = try_to_fill_dentry(dentry, 0);
if (status)
goto out_error;
@@ -361,47 +300,18 @@ static int autofs4_revalidate(struct dentry *dentry, struct nameidata *nd)
{
struct inode *dir = dentry->d_parent->d_inode;
struct autofs_sb_info *sbi = autofs4_sbi(dir->i_sb);
- struct autofs_info *ino = autofs4_dentry_ino(dentry);
- struct rehash_entry *entry;
+ int oz_mode = autofs4_oz_mode(sbi);
int flags = nd ? nd->flags : 0;
- unsigned int mutex_aquired;
+ int status = 1;
- DPRINTK("name = %.*s oz_mode = %d",
- dentry->d_name.len, dentry->d_name.name, oz_mode);
-
- /* Daemon never causes a mount to trigger */
- if (autofs4_oz_mode(sbi))
- return 1;
-
- entry = kmalloc(sizeof(struct rehash_entry), GFP_KERNEL);
- if (!entry)
- return -ENOMEM;
-
- mutex_aquired = mutex_trylock(&dir->i_mutex);
-
- spin_lock(&sbi->fs_lock);
- spin_lock(&dcache_lock);
/* Pending dentry */
+ spin_lock(&sbi->fs_lock);
if (autofs4_ispending(dentry)) {
- int status;
-
- /*
- * We can only unhash and send this to ->lookup() if
- * the directory mutex is held over d_revalidate() and
- * ->lookup(). This prevents the VFS from incorrectly
- * seeing the dentry as non-existent.
- */
- ino->flags |= AUTOFS_INF_PENDING;
- if (!mutex_aquired) {
- autofs4_revalidate_drop(dentry, entry);
- spin_unlock(&dcache_lock);
- spin_unlock(&sbi->fs_lock);
- return 0;
- }
- spin_unlock(&dcache_lock);
+ /* The daemon never causes a mount to trigger */
spin_unlock(&sbi->fs_lock);
- mutex_unlock(&dir->i_mutex);
- kfree(entry);
+
+ if (oz_mode)
+ return 1;
/*
* If the directory has gone away due to an expire
@@ -415,82 +325,45 @@ static int autofs4_revalidate(struct dentry *dentry, struct nameidata *nd)
* A zero status is success otherwise we have a
* negative error code.
*/
- status = try_to_fill_dentry(dentry);
-
- spin_lock(&sbi->fs_lock);
- ino->flags &= ~AUTOFS_INF_PENDING;
- spin_unlock(&sbi->fs_lock);
-
+ status = try_to_fill_dentry(dentry, flags);
if (status == 0)
return 1;
return status;
}
+ spin_unlock(&sbi->fs_lock);
+
+ /* Negative dentry.. invalidate if "old" */
+ if (dentry->d_inode == NULL)
+ return 0;
/* Check for a non-mountpoint directory with no contents */
+ spin_lock(&dcache_lock);
if (S_ISDIR(dentry->d_inode->i_mode) &&
!d_mountpoint(dentry) && list_empty(&dentry->d_subdirs)) {
DPRINTK("dentry=%p %.*s, emptydir",
dentry, dentry->d_name.len, dentry->d_name.name);
+ spin_unlock(&dcache_lock);
- if (autofs4_need_mount(flags) || current->link_count) {
- int status;
-
- /*
- * We can only unhash and send this to ->lookup() if
- * the directory mutex is held over d_revalidate() and
- * ->lookup(). This prevents the VFS from incorrectly
- * seeing the dentry as non-existent.
- */
- ino->flags |= AUTOFS_INF_PENDING;
- if (!mutex_aquired) {
- autofs4_revalidate_drop(dentry, entry);
- spin_unlock(&dcache_lock);
- spin_unlock(&sbi->fs_lock);
- return 0;
- }
- spin_unlock(&dcache_lock);
- spin_unlock(&sbi->fs_lock);
- mutex_unlock(&dir->i_mutex);
- kfree(entry);
-
- /*
- * A zero status is success otherwise we have a
- * negative error code.
- */
- status = try_to_fill_dentry(dentry);
-
- spin_lock(&sbi->fs_lock);
- ino->flags &= ~AUTOFS_INF_PENDING;
- spin_unlock(&sbi->fs_lock);
+ /* The daemon never causes a mount to trigger */
+ if (oz_mode)
+ return 1;
- if (status == 0)
- return 1;
+ /*
+ * A zero status is success otherwise we have a
+ * negative error code.
+ */
+ status = try_to_fill_dentry(dentry, flags);
+ if (status == 0)
+ return 1;
- return status;
- }
+ return status;
}
spin_unlock(&dcache_lock);
- spin_unlock(&sbi->fs_lock);
-
- if (mutex_aquired)
- mutex_unlock(&dir->i_mutex);
-
- kfree(entry);
return 1;
}
-static void autofs4_free_rehash_entrys(struct autofs_info *inf)
-{
- struct list_head *head = &inf->rehash_list;
- struct rehash_entry *entry, *next;
- list_for_each_entry_safe(entry, next, head, list) {
- list_del(&entry->list);
- kfree(entry);
- }
-}
-
void autofs4_dentry_release(struct dentry *de)
{
struct autofs_info *inf;
@@ -509,8 +382,6 @@ void autofs4_dentry_release(struct dentry *de)
list_del(&inf->active);
if (!list_empty(&inf->expiring))
list_del(&inf->expiring);
- if (!list_empty(&inf->rehash_list))
- autofs4_free_rehash_entrys(inf);
spin_unlock(&sbi->lookup_lock);
}
@@ -543,7 +414,6 @@ static struct dentry *autofs4_lookup_active(struct dentry *dentry)
const unsigned char *str = name->name;
struct list_head *p, *head;
-restart:
spin_lock(&dcache_lock);
spin_lock(&sbi->lookup_lock);
head = &sbi->active_list;
@@ -561,19 +431,6 @@ restart:
if (atomic_read(&active->d_count) == 0)
goto next;
- if (active->d_inode && IS_DEADDIR(active->d_inode)) {
- if (!list_empty(&ino->rehash_list)) {
- dget(active);
- spin_unlock(&active->d_lock);
- spin_unlock(&sbi->lookup_lock);
- spin_unlock(&dcache_lock);
- autofs4_remove_rehash_entrys(ino);
- dput(active);
- goto restart;
- }
- goto next;
- }
-
qstr = &active->d_name;
if (active->d_name.hash != hash)
@@ -586,11 +443,13 @@ restart:
if (memcmp(qstr->name, str, len))
goto next;
- dget(active);
- spin_unlock(&active->d_lock);
- spin_unlock(&sbi->lookup_lock);
- spin_unlock(&dcache_lock);
- return active;
+ if (d_unhashed(active)) {
+ dget(active);
+ spin_unlock(&active->d_lock);
+ spin_unlock(&sbi->lookup_lock);
+ spin_unlock(&dcache_lock);
+ return active;
+ }
next:
spin_unlock(&active->d_lock);
}
@@ -639,11 +498,13 @@ static struct dentry *autofs4_lookup_expiring(struct dentry *dentry)
if (memcmp(qstr->name, str, len))
goto next;
- dget(expiring);
- spin_unlock(&expiring->d_lock);
- spin_unlock(&sbi->lookup_lock);
- spin_unlock(&dcache_lock);
- return expiring;
+ if (d_unhashed(expiring)) {
+ dget(expiring);
+ spin_unlock(&expiring->d_lock);
+ spin_unlock(&sbi->lookup_lock);
+ spin_unlock(&dcache_lock);
+ return expiring;
+ }
next:
spin_unlock(&expiring->d_lock);
}
@@ -653,48 +514,6 @@ next:
return NULL;
}
-static struct autofs_info *init_new_dentry(struct autofs_sb_info *sbi,
- struct dentry *dentry, int oz_mode)
-{
- struct autofs_info *ino;
-
- /*
- * Mark the dentry incomplete but don't hash it. We do this
- * to serialize our inode creation operations (symlink and
- * mkdir) which prevents deadlock during the callback to
- * the daemon. Subsequent user space lookups for the same
- * dentry are placed on the wait queue while the daemon
- * itself is allowed passage unresticted so the create
- * operation itself can then hash the dentry. Finally,
- * we check for the hashed dentry and return the newly
- * hashed dentry.
- */
- dentry->d_op = &autofs4_root_dentry_operations;
-
- /*
- * And we need to ensure that the same dentry is used for
- * all following lookup calls until it is hashed so that
- * the dentry flags are persistent throughout the request.
- */
- ino = autofs4_init_ino(NULL, sbi, 0555);
- if (!ino)
- return ERR_PTR(-ENOMEM);
-
- dentry->d_fsdata = ino;
- ino->dentry = dentry;
-
- /*
- * Only set the mount pending flag for new dentrys not created
- * by the daemon.
- */
- if (!oz_mode)
- ino->flags |= AUTOFS_INF_PENDING;
-
- d_instantiate(dentry, NULL);
-
- return ino;
-}
-
/* Lookups in the root directory */
static struct dentry *autofs4_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
{
@@ -702,7 +521,6 @@ static struct dentry *autofs4_lookup(struct inode *dir, struct dentry *dentry, s
struct autofs_info *ino;
struct dentry *expiring, *active;
int oz_mode;
- int status = 0;
DPRINTK("name = %.*s",
dentry->d_name.len, dentry->d_name.name);
@@ -717,26 +535,44 @@ static struct dentry *autofs4_lookup(struct inode *dir, struct dentry *dentry, s
DPRINTK("pid = %u, pgrp = %u, catatonic = %d, oz_mode = %d",
current->pid, task_pgrp_nr(current), sbi->catatonic, oz_mode);
- spin_lock(&sbi->fs_lock);
active = autofs4_lookup_active(dentry);
if (active) {
dentry = active;
ino = autofs4_dentry_ino(dentry);
- /* If this came from revalidate, rehash it */
- autofs4_revalidate_rehash(dentry);
- spin_unlock(&sbi->fs_lock);
} else {
- spin_unlock(&sbi->fs_lock);
- ino = init_new_dentry(sbi, dentry, oz_mode);
- if (IS_ERR(ino))
- return (struct dentry *) ino;
- }
+ /*
+ * Mark the dentry incomplete but don't hash it. We do this
+ * to serialize our inode creation operations (symlink and
+ * mkdir) which prevents deadlock during the callback to
+ * the daemon. Subsequent user space lookups for the same
+ * dentry are placed on the wait queue while the daemon
+ * itself is allowed passage unresticted so the create
+ * operation itself can then hash the dentry. Finally,
+ * we check for the hashed dentry and return the newly
+ * hashed dentry.
+ */
+ dentry->d_op = &autofs4_root_dentry_operations;
+
+ /*
+ * And we need to ensure that the same dentry is used for
+ * all following lookup calls until it is hashed so that
+ * the dentry flags are persistent throughout the request.
+ */
+ ino = autofs4_init_ino(NULL, sbi, 0555);
+ if (!ino)
+ return ERR_PTR(-ENOMEM);
- autofs4_add_active(dentry);
+ dentry->d_fsdata = ino;
+ ino->dentry = dentry;
+
+ autofs4_add_active(dentry);
+
+ d_instantiate(dentry, NULL);
+ }
if (!oz_mode) {
- expiring = autofs4_lookup_expiring(dentry);
mutex_unlock(&dir->i_mutex);
+ expiring = autofs4_lookup_expiring(dentry);
if (expiring) {
/*
* If we are racing with expire the request might not
@@ -744,22 +580,23 @@ static struct dentry *autofs4_lookup(struct inode *dir, struct dentry *dentry, s
* so it must have been successful, so just wait for it.
*/
autofs4_expire_wait(expiring);
+ autofs4_del_expiring(expiring);
dput(expiring);
}
- status = try_to_fill_dentry(dentry);
- mutex_lock(&dir->i_mutex);
+
spin_lock(&sbi->fs_lock);
- ino->flags &= ~AUTOFS_INF_PENDING;
+ ino->flags |= AUTOFS_INF_PENDING;
spin_unlock(&sbi->fs_lock);
+ if (dentry->d_op && dentry->d_op->d_revalidate)
+ (dentry->d_op->d_revalidate)(dentry, nd);
+ mutex_lock(&dir->i_mutex);
}
- autofs4_del_active(dentry);
-
/*
- * If we had a mount fail, check if we had to handle
+ * If we are still pending, check if we had to handle
* a signal. If so we can force a restart..
*/
- if (status) {
+ if (ino->flags & AUTOFS_INF_PENDING) {
/* See if we were interrupted */
if (signal_pending(current)) {
sigset_t *sigset = &current->pending.signal;
@@ -771,46 +608,43 @@ static struct dentry *autofs4_lookup(struct inode *dir, struct dentry *dentry, s
return ERR_PTR(-ERESTARTNOINTR);
}
}
- }
-
- /*
- * User space can (and has done in the past) remove and re-create
- * this directory during the callback. This can leave us with an
- * unhashed dentry, but a successful mount! So we need to
- * perform another cached lookup in case the dentry now exists.
- */
- if (!oz_mode && !have_submounts(dentry)) {
- struct dentry *new;
- new = d_lookup(dentry->d_parent, &dentry->d_name);
- if (new) {
- if (active)
- dput(active);
- return new;
- } else {
- if (!status)
- status = -ENOENT;
+ if (!oz_mode) {
+ spin_lock(&sbi->fs_lock);
+ ino->flags &= ~AUTOFS_INF_PENDING;
+ spin_unlock(&sbi->fs_lock);
}
}
/*
- * If we had a mount failure, return status to user space.
- * If the mount succeeded and we used a dentry from the active queue
- * return it.
+ * If this dentry is unhashed, then we shouldn't honour this
+ * lookup. Returning ENOENT here doesn't do the right thing
+ * for all system calls, but it should be OK for the operations
+ * we permit from an autofs.
*/
- if (status) {
- dentry = ERR_PTR(status);
- if (active)
- dput(active);
- return dentry;
- } else {
+ if (!oz_mode && d_unhashed(dentry)) {
/*
- * Valid successful mount, return active dentry or NULL
- * for a new dentry.
+ * A user space application can (and has done in the past)
+ * remove and re-create this directory during the callback.
+ * This can leave us with an unhashed dentry, but a
+ * successful mount! So we need to perform another
+ * cached lookup in case the dentry now exists.
*/
+ struct dentry *parent = dentry->d_parent;
+ struct dentry *new = d_lookup(parent, &dentry->d_name);
+ if (new != NULL)
+ dentry = new;
+ else
+ dentry = ERR_PTR(-ENOENT);
+
if (active)
- return active;
+ dput(active);
+
+ return dentry;
}
+ if (active)
+ return active;
+
return NULL;
}
@@ -834,6 +668,8 @@ static int autofs4_dir_symlink(struct inode *dir,
if (!ino)
return -ENOMEM;
+ autofs4_del_active(dentry);
+
ino->size = strlen(symname);
cp = kmalloc(ino->size + 1, GFP_KERNEL);
if (!cp) {
@@ -910,6 +746,7 @@ static int autofs4_dir_unlink(struct inode *dir, struct dentry *dentry)
dir->i_mtime = CURRENT_TIME;
spin_lock(&dcache_lock);
+ autofs4_add_expiring(dentry);
spin_lock(&dentry->d_lock);
__d_drop(dentry);
spin_unlock(&dentry->d_lock);
@@ -935,6 +772,7 @@ static int autofs4_dir_rmdir(struct inode *dir, struct dentry *dentry)
spin_unlock(&dcache_lock);
return -ENOTEMPTY;
}
+ autofs4_add_expiring(dentry);
spin_lock(&dentry->d_lock);
__d_drop(dentry);
spin_unlock(&dentry->d_lock);
@@ -972,6 +810,8 @@ static int autofs4_dir_mkdir(struct inode *dir, struct dentry *dentry, int mode)
if (!ino)
return -ENOMEM;
+ autofs4_del_active(dentry);
+
inode = autofs4_get_inode(dir->i_sb, ino);
if (!inode) {
if (!dentry->d_fsdata)
diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c
index 8f3d9fd89604..f22a7d3dc362 100644
--- a/fs/bfs/inode.c
+++ b/fs/bfs/inode.c
@@ -15,6 +15,7 @@
#include <linux/smp_lock.h>
#include <linux/buffer_head.h>
#include <linux/vfs.h>
+#include <linux/writeback.h>
#include <asm/uaccess.h>
#include "bfs.h"
@@ -98,7 +99,7 @@ error:
return ERR_PTR(-EIO);
}
-static int bfs_write_inode(struct inode *inode, int wait)
+static int bfs_write_inode(struct inode *inode, struct writeback_control *wbc)
{
struct bfs_sb_info *info = BFS_SB(inode->i_sb);
unsigned int ino = (u16)inode->i_ino;
@@ -147,7 +148,7 @@ static int bfs_write_inode(struct inode *inode, int wait)
di->i_eoffset = cpu_to_le32(i_sblock * BFS_BSIZE + inode->i_size - 1);
mark_buffer_dirty(bh);
- if (wait) {
+ if (wbc->sync_mode == WB_SYNC_ALL) {
sync_dirty_buffer(bh);
if (buffer_req(bh) && !buffer_uptodate(bh))
err = -EIO;
diff --git a/fs/bio.c b/fs/bio.c
index 88094afc29ea..dc17afd672e3 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -507,10 +507,8 @@ int bio_get_nr_vecs(struct block_device *bdev)
int nr_pages;
nr_pages = ((queue_max_sectors(q) << 9) + PAGE_SIZE - 1) >> PAGE_SHIFT;
- if (nr_pages > queue_max_phys_segments(q))
- nr_pages = queue_max_phys_segments(q);
- if (nr_pages > queue_max_hw_segments(q))
- nr_pages = queue_max_hw_segments(q);
+ if (nr_pages > queue_max_segments(q))
+ nr_pages = queue_max_segments(q);
return nr_pages;
}
@@ -575,8 +573,7 @@ static int __bio_add_page(struct request_queue *q, struct bio *bio, struct page
* make this too complex.
*/
- while (bio->bi_phys_segments >= queue_max_phys_segments(q)
- || bio->bi_phys_segments >= queue_max_hw_segments(q)) {
+ while (bio->bi_phys_segments >= queue_max_segments(q)) {
if (retried_segments)
return 0;
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 2aa8ec6a0981..8b5cfdd4bfc1 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -2326,7 +2326,7 @@ int btrfs_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf);
int btrfs_readpage(struct file *file, struct page *page);
void btrfs_delete_inode(struct inode *inode);
void btrfs_put_inode(struct inode *inode);
-int btrfs_write_inode(struct inode *inode, int wait);
+int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc);
void btrfs_dirty_inode(struct inode *inode);
struct inode *btrfs_alloc_inode(struct super_block *sb);
void btrfs_destroy_inode(struct inode *inode);
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 9d0809629967..6ed434ac037f 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -720,13 +720,15 @@ again:
inode->i_ino, orig_offset);
BUG_ON(ret);
}
- fi = btrfs_item_ptr(leaf, path->slots[0],
- struct btrfs_file_extent_item);
if (del_nr == 0) {
+ fi = btrfs_item_ptr(leaf, path->slots[0],
+ struct btrfs_file_extent_item);
btrfs_set_file_extent_type(leaf, fi,
BTRFS_FILE_EXTENT_REG);
btrfs_mark_buffer_dirty(leaf);
} else {
+ fi = btrfs_item_ptr(leaf, del_slot - 1,
+ struct btrfs_file_extent_item);
btrfs_set_file_extent_type(leaf, fi,
BTRFS_FILE_EXTENT_REG);
btrfs_set_file_extent_num_bytes(leaf, fi,
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 4deb280f8969..c41db6d45ab6 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -3968,7 +3968,7 @@ err:
return ret;
}
-int btrfs_write_inode(struct inode *inode, int wait)
+int btrfs_write_inode(struct inode *inode, struct writeback_control *wbc)
{
struct btrfs_root *root = BTRFS_I(inode)->root;
struct btrfs_trans_handle *trans;
@@ -3977,7 +3977,7 @@ int btrfs_write_inode(struct inode *inode, int wait)
if (root->fs_info->btree_inode == inode)
return 0;
- if (wait) {
+ if (wbc->sync_mode == WB_SYNC_ALL) {
trans = btrfs_join_transaction(root, 1);
btrfs_set_trans_block_group(trans, inode);
ret = btrfs_commit_transaction(trans, root);
diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c
index 14ac4806e291..eeb4986ea7db 100644
--- a/fs/cachefiles/namei.c
+++ b/fs/cachefiles/namei.c
@@ -348,7 +348,17 @@ int cachefiles_delete_object(struct cachefiles_cache *cache,
dir = dget_parent(object->dentry);
mutex_lock_nested(&dir->d_inode->i_mutex, I_MUTEX_PARENT);
- ret = cachefiles_bury_object(cache, dir, object->dentry);
+
+ /* we need to check that our parent is _still_ our parent - it may have
+ * been renamed */
+ if (dir == object->dentry->d_parent) {
+ ret = cachefiles_bury_object(cache, dir, object->dentry);
+ } else {
+ /* it got moved, presumably by cachefilesd culling it, so it's
+ * no longer in the key path and we can ignore it */
+ mutex_unlock(&dir->d_inode->i_mutex);
+ ret = 0;
+ }
dput(dir);
_leave(" = %d", ret);
diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES
index 7b2600b380d7..bc0025cdd1c9 100644
--- a/fs/cifs/CHANGES
+++ b/fs/cifs/CHANGES
@@ -1,3 +1,8 @@
+Version 1.62
+------------
+Add sockopt=TCP_NODELAY mount option. EA (xattr) routines hardened
+to more strictly handle corrupt frames.
+
Version 1.61
------------
Fix append problem to Samba servers (files opened with O_APPEND could
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index ac2b24c192f8..78c1b86d55f6 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -113,5 +113,5 @@ extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
extern const struct export_operations cifs_export_ops;
#endif /* EXPERIMENTAL */
-#define CIFS_VERSION "1.61"
+#define CIFS_VERSION "1.62"
#endif /* _CIFSFS_H */
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 4b35f7ec0583..a1c817eb291a 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -149,6 +149,7 @@ struct TCP_Server_Info {
bool svlocal:1; /* local server or remote */
bool noblocksnd; /* use blocking sendmsg */
bool noautotune; /* do not autotune send buf sizes */
+ bool tcp_nodelay;
atomic_t inFlight; /* number of requests on the wire to server */
#ifdef CONFIG_CIFS_STATS2
atomic_t inSend; /* requests trying to send */
@@ -204,7 +205,7 @@ struct cifsUidInfo {
struct cifsSesInfo {
struct list_head smb_ses_list;
struct list_head tcon_list;
- struct semaphore sesSem;
+ struct mutex session_mutex;
#if 0
struct cifsUidInfo *uidInfo; /* pointer to user info */
#endif
diff --git a/fs/cifs/cifspdu.h b/fs/cifs/cifspdu.h
index 3877737f96a6..14d036d8db11 100644
--- a/fs/cifs/cifspdu.h
+++ b/fs/cifs/cifspdu.h
@@ -415,10 +415,10 @@ struct smb_hdr {
__u8 WordCount;
} __attribute__((packed));
/* given a pointer to an smb_hdr retrieve the value of byte count */
-#define BCC(smb_var) (*(__u16 *)((char *)smb_var + sizeof(struct smb_hdr) + (2 * smb_var->WordCount)))
-#define BCC_LE(smb_var) (*(__le16 *)((char *)smb_var + sizeof(struct smb_hdr) + (2 * smb_var->WordCount)))
+#define BCC(smb_var) (*(__u16 *)((char *)(smb_var) + sizeof(struct smb_hdr) + (2 * (smb_var)->WordCount)))
+#define BCC_LE(smb_var) (*(__le16 *)((char *)(smb_var) + sizeof(struct smb_hdr) + (2 * (smb_var)->WordCount)))
/* given a pointer to an smb_hdr retrieve the pointer to the byte area */
-#define pByteArea(smb_var) ((unsigned char *)smb_var + sizeof(struct smb_hdr) + (2 * smb_var->WordCount) + 2)
+#define pByteArea(smb_var) ((unsigned char *)(smb_var) + sizeof(struct smb_hdr) + (2 * (smb_var)->WordCount) + 2)
/*
* Computer Name Length (since Netbios name was length 16 with last byte 0x20)
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 5646727e33f5..88e2bc44ac58 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -363,13 +363,10 @@ extern int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon,
__u32 filter, struct file *file, int multishot,
const struct nls_table *nls_codepage);
extern ssize_t CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon,
- const unsigned char *searchName, char *EAData,
+ const unsigned char *searchName,
+ const unsigned char *ea_name, char *EAData,
size_t bufsize, const struct nls_table *nls_codepage,
int remap_special_chars);
-extern ssize_t CIFSSMBQueryEA(const int xid, struct cifsTconInfo *tcon,
- const unsigned char *searchName, const unsigned char *ea_name,
- unsigned char *ea_value, size_t buf_size,
- const struct nls_table *nls_codepage, int remap_special_chars);
extern int CIFSSMBSetEA(const int xid, struct cifsTconInfo *tcon,
const char *fileName, const char *ea_name,
const void *ea_value, const __u16 ea_value_len,
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 941441d3e386..9d17df3e0768 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -170,19 +170,19 @@ cifs_reconnect_tcon(struct cifsTconInfo *tcon, int smb_command)
* need to prevent multiple threads trying to simultaneously
* reconnect the same SMB session
*/
- down(&ses->sesSem);
+ mutex_lock(&ses->session_mutex);
if (ses->need_reconnect)
rc = cifs_setup_session(0, ses, nls_codepage);
/* do we need to reconnect tcon? */
if (rc || !tcon->need_reconnect) {
- up(&ses->sesSem);
+ mutex_unlock(&ses->session_mutex);
goto out;
}
mark_open_files_invalid(tcon);
rc = CIFSTCon(0, ses, tcon->treeName, tcon, nls_codepage);
- up(&ses->sesSem);
+ mutex_unlock(&ses->session_mutex);
cFYI(1, ("reconnect tcon rc = %d", rc));
if (rc)
@@ -700,13 +700,13 @@ CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses)
if (!ses || !ses->server)
return -EIO;
- down(&ses->sesSem);
+ mutex_lock(&ses->session_mutex);
if (ses->need_reconnect)
goto session_already_dead; /* no need to send SMBlogoff if uid
already closed due to reconnect */
rc = small_smb_init(SMB_COM_LOGOFF_ANDX, 2, NULL, (void **)&pSMB);
if (rc) {
- up(&ses->sesSem);
+ mutex_unlock(&ses->session_mutex);
return rc;
}
@@ -721,7 +721,7 @@ CIFSSMBLogoff(const int xid, struct cifsSesInfo *ses)
pSMB->AndXCommand = 0xFF;
rc = SendReceiveNoRsp(xid, ses, (struct smb_hdr *) pSMB, 0);
session_already_dead:
- up(&ses->sesSem);
+ mutex_unlock(&ses->session_mutex);
/* if session dead then we do not need to do ulogoff,
since server closed smb session, no sense reporting
@@ -5269,22 +5269,34 @@ int CIFSSMBNotify(const int xid, struct cifsTconInfo *tcon,
cifs_buf_release(pSMB);
return rc;
}
+
#ifdef CONFIG_CIFS_XATTR
+/*
+ * Do a path-based QUERY_ALL_EAS call and parse the result. This is a common
+ * function used by listxattr and getxattr type calls. When ea_name is set,
+ * it looks for that attribute name and stuffs that value into the EAData
+ * buffer. When ea_name is NULL, it stuffs a list of attribute names into the
+ * buffer. In both cases, the return value is either the length of the
+ * resulting data or a negative error code. If EAData is a NULL pointer then
+ * the data isn't copied to it, but the length is returned.
+ */
ssize_t
CIFSSMBQAllEAs(const int xid, struct cifsTconInfo *tcon,
- const unsigned char *searchName,
- char *EAData, size_t buf_size,
- const struct nls_table *nls_codepage, int remap)
+ const unsigned char *searchName, const unsigned char *ea_name,
+ char *EAData, size_t buf_size,
+ const struct nls_table *nls_codepage, int remap)
{
/* BB assumes one setup word */
TRANSACTION2_QPI_REQ *pSMB = NULL;
TRANSACTION2_QPI_RSP *pSMBr = NULL;
int rc = 0;
int bytes_returned;
- int name_len;
+ int list_len;
+ struct fealist *ea_response_data;
struct fea *temp_fea;
char *temp_ptr;
- __u16 params, byte_count;
+ char *end_of_smb;
+ __u16 params, byte_count, data_offset;
cFYI(1, ("In Query All EAs path %s", searchName));
QAllEAsRetry:
@@ -5294,22 +5306,22 @@ QAllEAsRetry:
return rc;
if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len =
+ list_len =
cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
PATH_MAX, nls_codepage, remap);
- name_len++; /* trailing null */
- name_len *= 2;
+ list_len++; /* trailing null */
+ list_len *= 2;
} else { /* BB improve the check for buffer overruns BB */
- name_len = strnlen(searchName, PATH_MAX);
- name_len++; /* trailing null */
- strncpy(pSMB->FileName, searchName, name_len);
+ list_len = strnlen(searchName, PATH_MAX);
+ list_len++; /* trailing null */
+ strncpy(pSMB->FileName, searchName, list_len);
}
- params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */;
+ params = 2 /* level */ + 4 /* reserved */ + list_len /* includes NUL */;
pSMB->TotalDataCount = 0;
pSMB->MaxParameterCount = cpu_to_le16(2);
/* BB find exact max SMB PDU from sess structure BB */
- pSMB->MaxDataCount = cpu_to_le16(4000);
+ pSMB->MaxDataCount = cpu_to_le16(CIFSMaxBufSize);
pSMB->MaxSetupCount = 0;
pSMB->Reserved = 0;
pSMB->Flags = 0;
@@ -5334,237 +5346,117 @@ QAllEAsRetry:
(struct smb_hdr *) pSMBr, &bytes_returned, 0);
if (rc) {
cFYI(1, ("Send error in QueryAllEAs = %d", rc));
- } else { /* decode response */
- rc = validate_t2((struct smb_t2_rsp *)pSMBr);
+ goto QAllEAsOut;
+ }
- /* BB also check enough total bytes returned */
- /* BB we need to improve the validity checking
- of these trans2 responses */
- if (rc || (pSMBr->ByteCount < 4))
- rc = -EIO; /* bad smb */
- /* else if (pFindData){
- memcpy((char *) pFindData,
- (char *) &pSMBr->hdr.Protocol +
- data_offset, kl);
- }*/ else {
- /* check that length of list is not more than bcc */
- /* check that each entry does not go beyond length
- of list */
- /* check that each element of each entry does not
- go beyond end of list */
- __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
- struct fealist *ea_response_data;
- rc = 0;
- /* validate_trans2_offsets() */
- /* BB check if start of smb + data_offset > &bcc+ bcc */
- ea_response_data = (struct fealist *)
- (((char *) &pSMBr->hdr.Protocol) +
- data_offset);
- name_len = le32_to_cpu(ea_response_data->list_len);
- cFYI(1, ("ea length %d", name_len));
- if (name_len <= 8) {
- /* returned EA size zeroed at top of function */
- cFYI(1, ("empty EA list returned from server"));
- } else {
- /* account for ea list len */
- name_len -= 4;
- temp_fea = ea_response_data->list;
- temp_ptr = (char *)temp_fea;
- while (name_len > 0) {
- __u16 value_len;
- name_len -= 4;
- temp_ptr += 4;
- rc += temp_fea->name_len;
- /* account for prefix user. and trailing null */
- rc = rc + 5 + 1;
- if (rc < (int)buf_size) {
- memcpy(EAData, "user.", 5);
- EAData += 5;
- memcpy(EAData, temp_ptr,
- temp_fea->name_len);
- EAData += temp_fea->name_len;
- /* null terminate name */
- *EAData = 0;
- EAData = EAData + 1;
- } else if (buf_size == 0) {
- /* skip copy - calc size only */
- } else {
- /* stop before overrun buffer */
- rc = -ERANGE;
- break;
- }
- name_len -= temp_fea->name_len;
- temp_ptr += temp_fea->name_len;
- /* account for trailing null */
- name_len--;
- temp_ptr++;
- value_len =
- le16_to_cpu(temp_fea->value_len);
- name_len -= value_len;
- temp_ptr += value_len;
- /* BB check that temp_ptr is still
- within the SMB BB*/
-
- /* no trailing null to account for
- in value len */
- /* go on to next EA */
- temp_fea = (struct fea *)temp_ptr;
- }
- }
- }
+
+ /* BB also check enough total bytes returned */
+ /* BB we need to improve the validity checking
+ of these trans2 responses */
+
+ rc = validate_t2((struct smb_t2_rsp *)pSMBr);
+ if (rc || (pSMBr->ByteCount < 4)) {
+ rc = -EIO; /* bad smb */
+ goto QAllEAsOut;
}
- cifs_buf_release(pSMB);
- if (rc == -EAGAIN)
- goto QAllEAsRetry;
- return (ssize_t)rc;
-}
+ /* check that length of list is not more than bcc */
+ /* check that each entry does not go beyond length
+ of list */
+ /* check that each element of each entry does not
+ go beyond end of list */
+ /* validate_trans2_offsets() */
+ /* BB check if start of smb + data_offset > &bcc+ bcc */
-ssize_t CIFSSMBQueryEA(const int xid, struct cifsTconInfo *tcon,
- const unsigned char *searchName, const unsigned char *ea_name,
- unsigned char *ea_value, size_t buf_size,
- const struct nls_table *nls_codepage, int remap)
-{
- TRANSACTION2_QPI_REQ *pSMB = NULL;
- TRANSACTION2_QPI_RSP *pSMBr = NULL;
- int rc = 0;
- int bytes_returned;
- int name_len;
- struct fea *temp_fea;
- char *temp_ptr;
- __u16 params, byte_count;
+ data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
+ ea_response_data = (struct fealist *)
+ (((char *) &pSMBr->hdr.Protocol) + data_offset);
- cFYI(1, ("In Query EA path %s", searchName));
-QEARetry:
- rc = smb_init(SMB_COM_TRANSACTION2, 15, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
+ list_len = le32_to_cpu(ea_response_data->list_len);
+ cFYI(1, ("ea length %d", list_len));
+ if (list_len <= 8) {
+ cFYI(1, ("empty EA list returned from server"));
+ goto QAllEAsOut;
+ }
- if (pSMB->hdr.Flags2 & SMBFLG2_UNICODE) {
- name_len =
- cifsConvertToUCS((__le16 *) pSMB->FileName, searchName,
- PATH_MAX, nls_codepage, remap);
- name_len++; /* trailing null */
- name_len *= 2;
- } else { /* BB improve the check for buffer overruns BB */
- name_len = strnlen(searchName, PATH_MAX);
- name_len++; /* trailing null */
- strncpy(pSMB->FileName, searchName, name_len);
+ /* make sure list_len doesn't go past end of SMB */
+ end_of_smb = (char *)pByteArea(&pSMBr->hdr) + BCC(&pSMBr->hdr);
+ if ((char *)ea_response_data + list_len > end_of_smb) {
+ cFYI(1, ("EA list appears to go beyond SMB"));
+ rc = -EIO;
+ goto QAllEAsOut;
}
- params = 2 /* level */ + 4 /* reserved */ + name_len /* includes NUL */;
- pSMB->TotalDataCount = 0;
- pSMB->MaxParameterCount = cpu_to_le16(2);
- /* BB find exact max SMB PDU from sess structure BB */
- pSMB->MaxDataCount = cpu_to_le16(4000);
- pSMB->MaxSetupCount = 0;
- pSMB->Reserved = 0;
- pSMB->Flags = 0;
- pSMB->Timeout = 0;
- pSMB->Reserved2 = 0;
- pSMB->ParameterOffset = cpu_to_le16(offsetof(
- struct smb_com_transaction2_qpi_req, InformationLevel) - 4);
- pSMB->DataCount = 0;
- pSMB->DataOffset = 0;
- pSMB->SetupCount = 1;
- pSMB->Reserved3 = 0;
- pSMB->SubCommand = cpu_to_le16(TRANS2_QUERY_PATH_INFORMATION);
- byte_count = params + 1 /* pad */ ;
- pSMB->TotalParameterCount = cpu_to_le16(params);
- pSMB->ParameterCount = pSMB->TotalParameterCount;
- pSMB->InformationLevel = cpu_to_le16(SMB_INFO_QUERY_ALL_EAS);
- pSMB->Reserved4 = 0;
- pSMB->hdr.smb_buf_length += byte_count;
- pSMB->ByteCount = cpu_to_le16(byte_count);
+ /* account for ea list len */
+ list_len -= 4;
+ temp_fea = ea_response_data->list;
+ temp_ptr = (char *)temp_fea;
+ while (list_len > 0) {
+ unsigned int name_len;
+ __u16 value_len;
+
+ list_len -= 4;
+ temp_ptr += 4;
+ /* make sure we can read name_len and value_len */
+ if (list_len < 0) {
+ cFYI(1, ("EA entry goes beyond length of list"));
+ rc = -EIO;
+ goto QAllEAsOut;
+ }
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *) pSMBr, &bytes_returned, 0);
- if (rc) {
- cFYI(1, ("Send error in Query EA = %d", rc));
- } else { /* decode response */
- rc = validate_t2((struct smb_t2_rsp *)pSMBr);
+ name_len = temp_fea->name_len;
+ value_len = le16_to_cpu(temp_fea->value_len);
+ list_len -= name_len + 1 + value_len;
+ if (list_len < 0) {
+ cFYI(1, ("EA entry goes beyond length of list"));
+ rc = -EIO;
+ goto QAllEAsOut;
+ }
- /* BB also check enough total bytes returned */
- /* BB we need to improve the validity checking
- of these trans2 responses */
- if (rc || (pSMBr->ByteCount < 4))
- rc = -EIO; /* bad smb */
- /* else if (pFindData){
- memcpy((char *) pFindData,
- (char *) &pSMBr->hdr.Protocol +
- data_offset, kl);
- }*/ else {
- /* check that length of list is not more than bcc */
- /* check that each entry does not go beyond length
- of list */
- /* check that each element of each entry does not
- go beyond end of list */
- __u16 data_offset = le16_to_cpu(pSMBr->t2.DataOffset);
- struct fealist *ea_response_data;
- rc = -ENODATA;
- /* validate_trans2_offsets() */
- /* BB check if start of smb + data_offset > &bcc+ bcc*/
- ea_response_data = (struct fealist *)
- (((char *) &pSMBr->hdr.Protocol) +
- data_offset);
- name_len = le32_to_cpu(ea_response_data->list_len);
- cFYI(1, ("ea length %d", name_len));
- if (name_len <= 8) {
- /* returned EA size zeroed at top of function */
- cFYI(1, ("empty EA list returned from server"));
- } else {
- /* account for ea list len */
- name_len -= 4;
- temp_fea = ea_response_data->list;
- temp_ptr = (char *)temp_fea;
- /* loop through checking if we have a matching
- name and then return the associated value */
- while (name_len > 0) {
- __u16 value_len;
- name_len -= 4;
- temp_ptr += 4;
- value_len =
- le16_to_cpu(temp_fea->value_len);
- /* BB validate that value_len falls within SMB,
- even though maximum for name_len is 255 */
- if (memcmp(temp_fea->name, ea_name,
- temp_fea->name_len) == 0) {
- /* found a match */
- rc = value_len;
- /* account for prefix user. and trailing null */
- if (rc <= (int)buf_size) {
- memcpy(ea_value,
- temp_fea->name+temp_fea->name_len+1,
- rc);
- /* ea values, unlike ea
- names, are not null
- terminated */
- } else if (buf_size == 0) {
- /* skip copy - calc size only */
- } else {
- /* stop before overrun buffer */
- rc = -ERANGE;
- }
- break;
- }
- name_len -= temp_fea->name_len;
- temp_ptr += temp_fea->name_len;
- /* account for trailing null */
- name_len--;
- temp_ptr++;
- name_len -= value_len;
- temp_ptr += value_len;
- /* No trailing null to account for in
- value_len. Go on to next EA */
- temp_fea = (struct fea *)temp_ptr;
+ if (ea_name) {
+ if (strncmp(ea_name, temp_ptr, name_len) == 0) {
+ temp_ptr += name_len + 1;
+ rc = value_len;
+ if (buf_size == 0)
+ goto QAllEAsOut;
+ if ((size_t)value_len > buf_size) {
+ rc = -ERANGE;
+ goto QAllEAsOut;
}
+ memcpy(EAData, temp_ptr, value_len);
+ goto QAllEAsOut;
+ }
+ } else {
+ /* account for prefix user. and trailing null */
+ rc += (5 + 1 + name_len);
+ if (rc < (int) buf_size) {
+ memcpy(EAData, "user.", 5);
+ EAData += 5;
+ memcpy(EAData, temp_ptr, name_len);
+ EAData += name_len;
+ /* null terminate name */
+ *EAData = 0;
+ ++EAData;
+ } else if (buf_size == 0) {
+ /* skip copy - calc size only */
+ } else {
+ /* stop before overrun buffer */
+ rc = -ERANGE;
+ break;
}
}
+ temp_ptr += name_len + 1 + value_len;
+ temp_fea = (struct fea *)temp_ptr;
}
+
+ /* didn't find the named attribute */
+ if (ea_name)
+ rc = -ENODATA;
+
+QAllEAsOut:
cifs_buf_release(pSMB);
if (rc == -EAGAIN)
- goto QEARetry;
+ goto QAllEAsRetry;
return (ssize_t)rc;
}
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 3bbcaa716b3c..45eb6cba793f 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -98,7 +98,7 @@ struct smb_vol {
bool nostrictsync:1; /* do not force expensive SMBflush on every sync */
unsigned int rsize;
unsigned int wsize;
- unsigned int sockopt;
+ bool sockopt_tcp_nodelay:1;
unsigned short int port;
char *prepath;
};
@@ -1142,9 +1142,11 @@ cifs_parse_mount_options(char *options, const char *devname,
simple_strtoul(value, &value, 0);
}
} else if (strnicmp(data, "sockopt", 5) == 0) {
- if (value && *value) {
- vol->sockopt =
- simple_strtoul(value, &value, 0);
+ if (!value || !*value) {
+ cERROR(1, ("no socket option specified"));
+ continue;
+ } else if (strnicmp(value, "TCP_NODELAY", 11) == 0) {
+ vol->sockopt_tcp_nodelay = 1;
}
} else if (strnicmp(data, "netbiosname", 4) == 0) {
if (!value || !*value || (*value == ' ')) {
@@ -1514,6 +1516,7 @@ cifs_get_tcp_session(struct smb_vol *volume_info)
tcp_ses->noblocksnd = volume_info->noblocksnd;
tcp_ses->noautotune = volume_info->noautotune;
+ tcp_ses->tcp_nodelay = volume_info->sockopt_tcp_nodelay;
atomic_set(&tcp_ses->inFlight, 0);
init_waitqueue_head(&tcp_ses->response_q);
init_waitqueue_head(&tcp_ses->request_q);
@@ -1764,6 +1767,7 @@ static int
ipv4_connect(struct TCP_Server_Info *server)
{
int rc = 0;
+ int val;
bool connected = false;
__be16 orig_port = 0;
struct socket *socket = server->ssocket;
@@ -1845,6 +1849,14 @@ ipv4_connect(struct TCP_Server_Info *server)
socket->sk->sk_rcvbuf = 140 * 1024;
}
+ if (server->tcp_nodelay) {
+ val = 1;
+ rc = kernel_setsockopt(socket, SOL_TCP, TCP_NODELAY,
+ (char *)&val, sizeof(val));
+ if (rc)
+ cFYI(1, ("set TCP_NODELAY socket option error %d", rc));
+ }
+
cFYI(1, ("sndbuf %d rcvbuf %d rcvtimeo 0x%lx",
socket->sk->sk_sndbuf,
socket->sk->sk_rcvbuf, socket->sk->sk_rcvtimeo));
@@ -1916,6 +1928,7 @@ static int
ipv6_connect(struct TCP_Server_Info *server)
{
int rc = 0;
+ int val;
bool connected = false;
__be16 orig_port = 0;
struct socket *socket = server->ssocket;
@@ -1987,6 +2000,15 @@ ipv6_connect(struct TCP_Server_Info *server)
*/
socket->sk->sk_rcvtimeo = 7 * HZ;
socket->sk->sk_sndtimeo = 5 * HZ;
+
+ if (server->tcp_nodelay) {
+ val = 1;
+ rc = kernel_setsockopt(socket, SOL_TCP, TCP_NODELAY,
+ (char *)&val, sizeof(val));
+ if (rc)
+ cFYI(1, ("set TCP_NODELAY socket option error %d", rc));
+ }
+
server->ssocket = socket;
return rc;
@@ -2366,13 +2388,13 @@ try_mount_again:
*/
cifs_put_tcp_session(srvTcp);
- down(&pSesInfo->sesSem);
+ mutex_lock(&pSesInfo->session_mutex);
if (pSesInfo->need_reconnect) {
cFYI(1, ("Session needs reconnect"));
rc = cifs_setup_session(xid, pSesInfo,
cifs_sb->local_nls);
}
- up(&pSesInfo->sesSem);
+ mutex_unlock(&pSesInfo->session_mutex);
} else if (!rc) {
cFYI(1, ("Existing smb sess not found"));
pSesInfo = sesInfoAlloc();
@@ -2415,12 +2437,12 @@ try_mount_again:
}
pSesInfo->linux_uid = volume_info->linux_uid;
pSesInfo->overrideSecFlg = volume_info->secFlg;
- down(&pSesInfo->sesSem);
+ mutex_lock(&pSesInfo->session_mutex);
/* BB FIXME need to pass vol->secFlgs BB */
rc = cifs_setup_session(xid, pSesInfo,
cifs_sb->local_nls);
- up(&pSesInfo->sesSem);
+ mutex_unlock(&pSesInfo->session_mutex);
}
/* search for existing tcon to this server share */
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 057e1dae12ab..3d8f8a96f5a3 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -2289,9 +2289,9 @@ cifs_oplock_break(struct slow_work *work)
if (inode && S_ISREG(inode->i_mode)) {
#ifdef CONFIG_CIFS_EXPERIMENTAL
if (cinode->clientCanCacheAll == 0)
- break_lease(inode, FMODE_READ);
+ break_lease(inode, O_RDONLY);
else if (cinode->clientCanCacheRead == 0)
- break_lease(inode, FMODE_WRITE);
+ break_lease(inode, O_WRONLY);
#endif
rc = filemap_fdatawrite(inode->i_mapping);
if (cinode->clientCanCacheRead == 0) {
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index cf18ee765590..8bdbc818164c 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -111,6 +111,7 @@ cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr)
cifs_i->delete_pending = fattr->cf_flags & CIFS_FATTR_DELETE_PENDING;
+ cifs_i->server_eof = fattr->cf_eof;
/*
* Can't safely change the file size here if the client is writing to
* it due to potential races.
@@ -366,7 +367,7 @@ static int cifs_sfu_mode(struct cifs_fattr *fattr, const unsigned char *path,
char ea_value[4];
__u32 mode;
- rc = CIFSSMBQueryEA(xid, cifs_sb->tcon, path, "SETFILEBITS",
+ rc = CIFSSMBQAllEAs(xid, cifs_sb->tcon, path, "SETFILEBITS",
ea_value, 4 /* size of buf */, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
@@ -1762,8 +1763,18 @@ cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs)
CIFS_MOUNT_MAP_SPECIAL_CHR);
}
- if (!rc)
+ if (!rc) {
rc = inode_setattr(inode, attrs);
+
+ /* force revalidate when any of these times are set since some
+ of the fs types (eg ext3, fat) do not have fine enough
+ time granularity to match protocol, and we do not have a
+ a way (yet) to query the server fs's time granularity (and
+ whether it rounds times down).
+ */
+ if (!rc && (attrs->ia_valid & (ATTR_MTIME | ATTR_CTIME)))
+ cifsInode->time = 0;
+ }
out:
kfree(args);
kfree(full_path);
diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c
index d27d4ec6579b..d1474996a812 100644
--- a/fs/cifs/misc.c
+++ b/fs/cifs/misc.c
@@ -79,7 +79,7 @@ sesInfoAlloc(void)
++ret_buf->ses_count;
INIT_LIST_HEAD(&ret_buf->smb_ses_list);
INIT_LIST_HEAD(&ret_buf->tcon_list);
- init_MUTEX(&ret_buf->sesSem);
+ mutex_init(&ret_buf->session_mutex);
}
return ret_buf;
}
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index f84062f9a985..c343b14ba2d3 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -77,6 +77,11 @@ cifs_readdir_lookup(struct dentry *parent, struct qstr *name,
cFYI(1, ("For %s", name->name));
+ if (parent->d_op && parent->d_op->d_hash)
+ parent->d_op->d_hash(parent, name);
+ else
+ name->hash = full_name_hash(name->name, name->len);
+
dentry = d_lookup(parent, name);
if (dentry) {
/* FIXME: check for inode number changes? */
@@ -666,12 +671,11 @@ static int cifs_get_name_from_search_buf(struct qstr *pqst,
min(len, max_len), nlt,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
+ pqst->len -= nls_nullsize(nlt);
} else {
pqst->name = filename;
pqst->len = len;
}
- pqst->hash = full_name_hash(pqst->name, pqst->len);
-/* cFYI(1, ("filldir on %s",pqst->name)); */
return rc;
}
diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c
index 7085a6275c4c..aaa9c1c5a5bd 100644
--- a/fs/cifs/sess.c
+++ b/fs/cifs/sess.c
@@ -223,9 +223,9 @@ static void unicode_ssetup_strings(char **pbcc_area, struct cifsSesInfo *ses,
/* null user mount */
*bcc_ptr = 0;
*(bcc_ptr+1) = 0;
- } else { /* 300 should be long enough for any conceivable user name */
+ } else {
bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, ses->userName,
- 300, nls_cp);
+ MAX_USERNAME_SIZE, nls_cp);
}
bcc_ptr += 2 * bytes_ret;
bcc_ptr += 2; /* account for null termination */
@@ -246,11 +246,10 @@ static void ascii_ssetup_strings(char **pbcc_area, struct cifsSesInfo *ses,
/* copy user */
if (ses->userName == NULL) {
/* BB what about null user mounts - check that we do this BB */
- } else { /* 300 should be long enough for any conceivable user name */
- strncpy(bcc_ptr, ses->userName, 300);
+ } else {
+ strncpy(bcc_ptr, ses->userName, MAX_USERNAME_SIZE);
}
- /* BB improve check for overflow */
- bcc_ptr += strnlen(ses->userName, 300);
+ bcc_ptr += strnlen(ses->userName, MAX_USERNAME_SIZE);
*bcc_ptr = 0;
bcc_ptr++; /* account for null termination */
diff --git a/fs/cifs/xattr.c b/fs/cifs/xattr.c
index a75afa3dd9e1..3e2ef0de1209 100644
--- a/fs/cifs/xattr.c
+++ b/fs/cifs/xattr.c
@@ -244,7 +244,7 @@ ssize_t cifs_getxattr(struct dentry *direntry, const char *ea_name,
/* revalidate/getattr then populate from inode */
} /* BB add else when above is implemented */
ea_name += 5; /* skip past user. prefix */
- rc = CIFSSMBQueryEA(xid, pTcon, full_path, ea_name, ea_value,
+ rc = CIFSSMBQAllEAs(xid, pTcon, full_path, ea_name, ea_value,
buf_size, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
} else if (strncmp(ea_name, CIFS_XATTR_OS2_PREFIX, 4) == 0) {
@@ -252,7 +252,7 @@ ssize_t cifs_getxattr(struct dentry *direntry, const char *ea_name,
goto get_ea_exit;
ea_name += 4; /* skip past os2. prefix */
- rc = CIFSSMBQueryEA(xid, pTcon, full_path, ea_name, ea_value,
+ rc = CIFSSMBQAllEAs(xid, pTcon, full_path, ea_name, ea_value,
buf_size, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MAP_SPECIAL_CHR);
} else if (strncmp(ea_name, POSIX_ACL_XATTR_ACCESS,
@@ -364,8 +364,8 @@ ssize_t cifs_listxattr(struct dentry *direntry, char *data, size_t buf_size)
/* if proc/fs/cifs/streamstoxattr is set then
search server for EAs or streams to
returns as xattrs */
- rc = CIFSSMBQAllEAs(xid, pTcon, full_path, data, buf_size,
- cifs_sb->local_nls,
+ rc = CIFSSMBQAllEAs(xid, pTcon, full_path, NULL, data,
+ buf_size, cifs_sb->local_nls,
cifs_sb->mnt_cifs_flags &
CIFS_MOUNT_MAP_SPECIAL_CHR);
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index c5c45de1a2ee..0ca9ec4a79c3 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -301,6 +301,12 @@ static int sg_ioctl_trans(unsigned int fd, unsigned int cmd,
u32 data;
void __user *dxferp;
int err;
+ int interface_id;
+
+ if (get_user(interface_id, &sgio32->interface_id))
+ return -EFAULT;
+ if (interface_id != 'S')
+ return sys_ioctl(fd, cmd, (unsigned long)sgio32);
if (get_user(iovec_count, &sgio32->iovec_count))
return -EFAULT;
@@ -936,6 +942,7 @@ COMPATIBLE_IOCTL(TCSETSF)
COMPATIBLE_IOCTL(TIOCLINUX)
COMPATIBLE_IOCTL(TIOCSBRK)
COMPATIBLE_IOCTL(TIOCCBRK)
+COMPATIBLE_IOCTL(TIOCGSID)
COMPATIBLE_IOCTL(TIOCGICOUNT)
/* Little t */
COMPATIBLE_IOCTL(TIOCGETD)
@@ -1038,6 +1045,8 @@ COMPATIBLE_IOCTL(FIOQSIZE)
#ifdef CONFIG_BLOCK
/* loop */
IGNORE_IOCTL(LOOP_CLR_FD)
+/* md calls this on random blockdevs */
+IGNORE_IOCTL(RAID_VERSION)
/* SG stuff */
COMPATIBLE_IOCTL(SG_SET_TIMEOUT)
COMPATIBLE_IOCTL(SG_GET_TIMEOUT)
diff --git a/fs/dcache.c b/fs/dcache.c
index 953173a293a9..f1358e5c3a59 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -257,6 +257,7 @@ kill_it:
if (dentry)
goto repeat;
}
+EXPORT_SYMBOL(dput);
/**
* d_invalidate - invalidate a dentry
@@ -314,6 +315,7 @@ int d_invalidate(struct dentry * dentry)
spin_unlock(&dcache_lock);
return 0;
}
+EXPORT_SYMBOL(d_invalidate);
/* This should be called _only_ with dcache_lock held */
@@ -328,6 +330,7 @@ struct dentry * dget_locked(struct dentry *dentry)
{
return __dget_locked(dentry);
}
+EXPORT_SYMBOL(dget_locked);
/**
* d_find_alias - grab a hashed alias of inode
@@ -384,6 +387,7 @@ struct dentry * d_find_alias(struct inode *inode)
}
return de;
}
+EXPORT_SYMBOL(d_find_alias);
/*
* Try to kill dentries associated with this inode.
@@ -408,6 +412,7 @@ restart:
}
spin_unlock(&dcache_lock);
}
+EXPORT_SYMBOL(d_prune_aliases);
/*
* Throw away a dentry - free the inode, dput the parent. This requires that
@@ -610,6 +615,7 @@ void shrink_dcache_sb(struct super_block * sb)
{
__shrink_dcache_sb(sb, NULL, 0);
}
+EXPORT_SYMBOL(shrink_dcache_sb);
/*
* destroy a single subtree of dentries for unmount
@@ -792,6 +798,7 @@ positive:
spin_unlock(&dcache_lock);
return 1;
}
+EXPORT_SYMBOL(have_submounts);
/*
* Search the dentry child list for the specified parent,
@@ -876,6 +883,7 @@ void shrink_dcache_parent(struct dentry * parent)
while ((found = select_parent(parent)) != 0)
__shrink_dcache_sb(sb, &found, 0);
}
+EXPORT_SYMBOL(shrink_dcache_parent);
/*
* Scan `nr' dentries and return the number which remain.
@@ -968,6 +976,7 @@ struct dentry *d_alloc(struct dentry * parent, const struct qstr *name)
return dentry;
}
+EXPORT_SYMBOL(d_alloc);
struct dentry *d_alloc_name(struct dentry *parent, const char *name)
{
@@ -1012,6 +1021,7 @@ void d_instantiate(struct dentry *entry, struct inode * inode)
spin_unlock(&dcache_lock);
security_d_instantiate(entry, inode);
}
+EXPORT_SYMBOL(d_instantiate);
/**
* d_instantiate_unique - instantiate a non-aliased dentry
@@ -1108,6 +1118,7 @@ struct dentry * d_alloc_root(struct inode * root_inode)
}
return res;
}
+EXPORT_SYMBOL(d_alloc_root);
static inline struct hlist_head *d_hash(struct dentry *parent,
unsigned long hash)
@@ -1211,7 +1222,6 @@ struct dentry *d_splice_alias(struct inode *inode, struct dentry *dentry)
BUG_ON(!(new->d_flags & DCACHE_DISCONNECTED));
spin_unlock(&dcache_lock);
security_d_instantiate(new, inode);
- d_rehash(dentry);
d_move(new, dentry);
iput(inode);
} else {
@@ -1225,6 +1235,7 @@ struct dentry *d_splice_alias(struct inode *inode, struct dentry *dentry)
d_add(dentry, inode);
return new;
}
+EXPORT_SYMBOL(d_splice_alias);
/**
* d_add_ci - lookup or allocate new dentry with case-exact name
@@ -1314,6 +1325,7 @@ err_out:
iput(inode);
return ERR_PTR(error);
}
+EXPORT_SYMBOL(d_add_ci);
/**
* d_lookup - search for a dentry
@@ -1357,6 +1369,7 @@ struct dentry * d_lookup(struct dentry * parent, struct qstr * name)
} while (read_seqretry(&rename_lock, seq));
return dentry;
}
+EXPORT_SYMBOL(d_lookup);
struct dentry * __d_lookup(struct dentry * parent, struct qstr * name)
{
@@ -1483,6 +1496,7 @@ int d_validate(struct dentry *dentry, struct dentry *dparent)
out:
return 0;
}
+EXPORT_SYMBOL(d_validate);
/*
* When a file is deleted, we have two options:
@@ -1528,6 +1542,7 @@ void d_delete(struct dentry * dentry)
fsnotify_nameremove(dentry, isdir);
}
+EXPORT_SYMBOL(d_delete);
static void __d_rehash(struct dentry * entry, struct hlist_head *list)
{
@@ -1556,6 +1571,7 @@ void d_rehash(struct dentry * entry)
spin_unlock(&entry->d_lock);
spin_unlock(&dcache_lock);
}
+EXPORT_SYMBOL(d_rehash);
/*
* When switching names, the actual string doesn't strictly have to
@@ -1702,6 +1718,7 @@ void d_move(struct dentry * dentry, struct dentry * target)
d_move_locked(dentry, target);
spin_unlock(&dcache_lock);
}
+EXPORT_SYMBOL(d_move);
/**
* d_ancestor - search for an ancestor
@@ -1868,6 +1885,7 @@ shouldnt_be_hashed:
spin_unlock(&dcache_lock);
BUG();
}
+EXPORT_SYMBOL_GPL(d_materialise_unique);
static int prepend(char **buffer, int *buflen, const char *str, int namelen)
{
@@ -2005,6 +2023,7 @@ char *d_path(const struct path *path, char *buf, int buflen)
path_put(&root);
return res;
}
+EXPORT_SYMBOL(d_path);
/*
* Helper function for dentry_operations.d_dname() members
@@ -2171,6 +2190,30 @@ int is_subdir(struct dentry *new_dentry, struct dentry *old_dentry)
return result;
}
+int path_is_under(struct path *path1, struct path *path2)
+{
+ struct vfsmount *mnt = path1->mnt;
+ struct dentry *dentry = path1->dentry;
+ int res;
+ spin_lock(&vfsmount_lock);
+ if (mnt != path2->mnt) {
+ for (;;) {
+ if (mnt->mnt_parent == mnt) {
+ spin_unlock(&vfsmount_lock);
+ return 0;
+ }
+ if (mnt->mnt_parent == path2->mnt)
+ break;
+ mnt = mnt->mnt_parent;
+ }
+ dentry = mnt->mnt_mountpoint;
+ }
+ res = is_subdir(dentry, path2->dentry);
+ spin_unlock(&vfsmount_lock);
+ return res;
+}
+EXPORT_SYMBOL(path_is_under);
+
void d_genocide(struct dentry *root)
{
struct dentry *this_parent = root;
@@ -2228,6 +2271,7 @@ ino_t find_inode_number(struct dentry *dir, struct qstr *name)
}
return ino;
}
+EXPORT_SYMBOL(find_inode_number);
static __initdata unsigned long dhash_entries;
static int __init set_dhash_entries(char *str)
@@ -2297,6 +2341,7 @@ static void __init dcache_init(void)
/* SLAB cache for __getname() consumers */
struct kmem_cache *names_cachep __read_mostly;
+EXPORT_SYMBOL(names_cachep);
EXPORT_SYMBOL(d_genocide);
@@ -2326,26 +2371,3 @@ void __init vfs_caches_init(unsigned long mempages)
bdev_cache_init();
chrdev_init();
}
-
-EXPORT_SYMBOL(d_alloc);
-EXPORT_SYMBOL(d_alloc_root);
-EXPORT_SYMBOL(d_delete);
-EXPORT_SYMBOL(d_find_alias);
-EXPORT_SYMBOL(d_instantiate);
-EXPORT_SYMBOL(d_invalidate);
-EXPORT_SYMBOL(d_lookup);
-EXPORT_SYMBOL(d_move);
-EXPORT_SYMBOL_GPL(d_materialise_unique);
-EXPORT_SYMBOL(d_path);
-EXPORT_SYMBOL(d_prune_aliases);
-EXPORT_SYMBOL(d_rehash);
-EXPORT_SYMBOL(d_splice_alias);
-EXPORT_SYMBOL(d_add_ci);
-EXPORT_SYMBOL(d_validate);
-EXPORT_SYMBOL(dget_locked);
-EXPORT_SYMBOL(dput);
-EXPORT_SYMBOL(find_inode_number);
-EXPORT_SYMBOL(have_submounts);
-EXPORT_SYMBOL(names_cachep);
-EXPORT_SYMBOL(shrink_dcache_parent);
-EXPORT_SYMBOL(shrink_dcache_sb);
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index 274ac865bae8..049d6c36da09 100644
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -496,7 +496,7 @@ struct dentry *debugfs_rename(struct dentry *old_dir, struct dentry *old_dentry,
}
d_move(old_dentry, dentry);
fsnotify_move(old_dir->d_inode, new_dir->d_inode, old_name,
- old_dentry->d_name.name, S_ISDIR(old_dentry->d_inode->i_mode),
+ S_ISDIR(old_dentry->d_inode->i_mode),
NULL, old_dentry);
fsnotify_oldname_free(old_name);
unlock_rename(new_dir, old_dir);
diff --git a/fs/dlm/ast.c b/fs/dlm/ast.c
index dc2ad6008b2d..4314f0d48d85 100644
--- a/fs/dlm/ast.c
+++ b/fs/dlm/ast.c
@@ -2,7 +2,7 @@
*******************************************************************************
**
** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
-** Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
+** Copyright (C) 2004-2010 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -33,10 +33,10 @@ void dlm_del_ast(struct dlm_lkb *lkb)
spin_unlock(&ast_queue_lock);
}
-void dlm_add_ast(struct dlm_lkb *lkb, int type, int bastmode)
+void dlm_add_ast(struct dlm_lkb *lkb, int type, int mode)
{
if (lkb->lkb_flags & DLM_IFL_USER) {
- dlm_user_add_ast(lkb, type, bastmode);
+ dlm_user_add_ast(lkb, type, mode);
return;
}
@@ -44,10 +44,21 @@ void dlm_add_ast(struct dlm_lkb *lkb, int type, int bastmode)
if (!(lkb->lkb_ast_type & (AST_COMP | AST_BAST))) {
kref_get(&lkb->lkb_ref);
list_add_tail(&lkb->lkb_astqueue, &ast_queue);
+ lkb->lkb_ast_first = type;
}
+
+ /* sanity check, this should not happen */
+
+ if ((type == AST_COMP) && (lkb->lkb_ast_type & AST_COMP))
+ log_print("repeat cast %d castmode %d lock %x %s",
+ mode, lkb->lkb_castmode,
+ lkb->lkb_id, lkb->lkb_resource->res_name);
+
lkb->lkb_ast_type |= type;
- if (bastmode)
- lkb->lkb_bastmode = bastmode;
+ if (type == AST_BAST)
+ lkb->lkb_bastmode = mode;
+ else
+ lkb->lkb_castmode = mode;
spin_unlock(&ast_queue_lock);
set_bit(WAKE_ASTS, &astd_wakeflags);
@@ -59,9 +70,9 @@ static void process_asts(void)
struct dlm_ls *ls = NULL;
struct dlm_rsb *r = NULL;
struct dlm_lkb *lkb;
- void (*cast) (void *astparam);
- void (*bast) (void *astparam, int mode);
- int type = 0, bastmode;
+ void (*castfn) (void *astparam);
+ void (*bastfn) (void *astparam, int mode);
+ int type, first, bastmode, castmode, do_bast, do_cast, last_castmode;
repeat:
spin_lock(&ast_queue_lock);
@@ -75,17 +86,48 @@ repeat:
list_del(&lkb->lkb_astqueue);
type = lkb->lkb_ast_type;
lkb->lkb_ast_type = 0;
+ first = lkb->lkb_ast_first;
+ lkb->lkb_ast_first = 0;
bastmode = lkb->lkb_bastmode;
-
+ castmode = lkb->lkb_castmode;
+ castfn = lkb->lkb_astfn;
+ bastfn = lkb->lkb_bastfn;
spin_unlock(&ast_queue_lock);
- cast = lkb->lkb_astfn;
- bast = lkb->lkb_bastfn;
-
- if ((type & AST_COMP) && cast)
- cast(lkb->lkb_astparam);
- if ((type & AST_BAST) && bast)
- bast(lkb->lkb_astparam, bastmode);
+ do_cast = (type & AST_COMP) && castfn;
+ do_bast = (type & AST_BAST) && bastfn;
+
+ /* Skip a bast if its blocking mode is compatible with the
+ granted mode of the preceding cast. */
+
+ if (do_bast) {
+ if (first == AST_COMP)
+ last_castmode = castmode;
+ else
+ last_castmode = lkb->lkb_castmode_done;
+ if (dlm_modes_compat(bastmode, last_castmode))
+ do_bast = 0;
+ }
+
+ if (first == AST_COMP) {
+ if (do_cast)
+ castfn(lkb->lkb_astparam);
+ if (do_bast)
+ bastfn(lkb->lkb_astparam, bastmode);
+ } else if (first == AST_BAST) {
+ if (do_bast)
+ bastfn(lkb->lkb_astparam, bastmode);
+ if (do_cast)
+ castfn(lkb->lkb_astparam);
+ } else {
+ log_error(ls, "bad ast_first %d ast_type %d",
+ first, type);
+ }
+
+ if (do_cast)
+ lkb->lkb_castmode_done = castmode;
+ if (do_bast)
+ lkb->lkb_bastmode_done = bastmode;
/* this removes the reference added by dlm_add_ast
and may result in the lkb being freed */
diff --git a/fs/dlm/ast.h b/fs/dlm/ast.h
index 1b5fc5f428fd..bcb1aaba519d 100644
--- a/fs/dlm/ast.h
+++ b/fs/dlm/ast.h
@@ -1,7 +1,7 @@
/******************************************************************************
*******************************************************************************
**
-** Copyright (C) 2005-2008 Red Hat, Inc. All rights reserved.
+** Copyright (C) 2005-2010 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -13,7 +13,7 @@
#ifndef __ASTD_DOT_H__
#define __ASTD_DOT_H__
-void dlm_add_ast(struct dlm_lkb *lkb, int type, int bastmode);
+void dlm_add_ast(struct dlm_lkb *lkb, int type, int mode);
void dlm_del_ast(struct dlm_lkb *lkb);
void dlm_astd_wake(void);
diff --git a/fs/dlm/debug_fs.c b/fs/dlm/debug_fs.c
index 375a2359b3bf..29d6139c35fc 100644
--- a/fs/dlm/debug_fs.c
+++ b/fs/dlm/debug_fs.c
@@ -256,7 +256,7 @@ static int print_format3_lock(struct seq_file *s, struct dlm_lkb *lkb,
lkb->lkb_status,
lkb->lkb_grmode,
lkb->lkb_rqmode,
- lkb->lkb_highbast,
+ lkb->lkb_bastmode,
rsb_lookup,
lkb->lkb_wait_type,
lkb->lkb_lvbseq,
diff --git a/fs/dlm/dlm_internal.h b/fs/dlm/dlm_internal.h
index 826d3dc6e0ab..f632b58cd222 100644
--- a/fs/dlm/dlm_internal.h
+++ b/fs/dlm/dlm_internal.h
@@ -2,7 +2,7 @@
*******************************************************************************
**
** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
-** Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
+** Copyright (C) 2004-2010 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -232,11 +232,17 @@ struct dlm_lkb {
int8_t lkb_status; /* granted, waiting, convert */
int8_t lkb_rqmode; /* requested lock mode */
int8_t lkb_grmode; /* granted lock mode */
- int8_t lkb_bastmode; /* requested mode */
int8_t lkb_highbast; /* highest mode bast sent for */
+
int8_t lkb_wait_type; /* type of reply waiting for */
int8_t lkb_wait_count;
int8_t lkb_ast_type; /* type of ast queued for */
+ int8_t lkb_ast_first; /* type of first ast queued */
+
+ int8_t lkb_bastmode; /* req mode of queued bast */
+ int8_t lkb_castmode; /* gr mode of queued cast */
+ int8_t lkb_bastmode_done; /* last delivered bastmode */
+ int8_t lkb_castmode_done; /* last delivered castmode */
struct list_head lkb_idtbl_list; /* lockspace lkbtbl */
struct list_head lkb_statequeue; /* rsb g/c/w list */
diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index 9c0c1db1e105..46ffd3eeaaf7 100644
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -1,7 +1,7 @@
/******************************************************************************
*******************************************************************************
**
-** Copyright (C) 2005-2008 Red Hat, Inc. All rights reserved.
+** Copyright (C) 2005-2010 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
@@ -307,7 +307,7 @@ static void queue_cast(struct dlm_rsb *r, struct dlm_lkb *lkb, int rv)
lkb->lkb_lksb->sb_status = rv;
lkb->lkb_lksb->sb_flags = lkb->lkb_sbflags;
- dlm_add_ast(lkb, AST_COMP, 0);
+ dlm_add_ast(lkb, AST_COMP, lkb->lkb_grmode);
}
static inline void queue_cast_overlap(struct dlm_rsb *r, struct dlm_lkb *lkb)
@@ -320,10 +320,12 @@ static void queue_bast(struct dlm_rsb *r, struct dlm_lkb *lkb, int rqmode)
{
lkb->lkb_time_bast = ktime_get();
- if (is_master_copy(lkb))
+ if (is_master_copy(lkb)) {
+ lkb->lkb_bastmode = rqmode; /* printed by debugfs */
send_bast(r, lkb, rqmode);
- else
+ } else {
dlm_add_ast(lkb, AST_BAST, rqmode);
+ }
}
/*
@@ -2280,20 +2282,30 @@ static int do_request(struct dlm_rsb *r, struct dlm_lkb *lkb)
if (can_be_queued(lkb)) {
error = -EINPROGRESS;
add_lkb(r, lkb, DLM_LKSTS_WAITING);
- send_blocking_asts(r, lkb);
add_timeout(lkb);
goto out;
}
error = -EAGAIN;
- if (force_blocking_asts(lkb))
- send_blocking_asts_all(r, lkb);
queue_cast(r, lkb, -EAGAIN);
-
out:
return error;
}
+static void do_request_effects(struct dlm_rsb *r, struct dlm_lkb *lkb,
+ int error)
+{
+ switch (error) {
+ case -EAGAIN:
+ if (force_blocking_asts(lkb))
+ send_blocking_asts_all(r, lkb);
+ break;
+ case -EINPROGRESS:
+ send_blocking_asts(r, lkb);
+ break;
+ }
+}
+
static int do_convert(struct dlm_rsb *r, struct dlm_lkb *lkb)
{
int error = 0;
@@ -2304,7 +2316,6 @@ static int do_convert(struct dlm_rsb *r, struct dlm_lkb *lkb)
if (can_be_granted(r, lkb, 1, &deadlk)) {
grant_lock(r, lkb);
queue_cast(r, lkb, 0);
- grant_pending_locks(r);
goto out;
}
@@ -2334,7 +2345,6 @@ static int do_convert(struct dlm_rsb *r, struct dlm_lkb *lkb)
if (_can_be_granted(r, lkb, 1)) {
grant_lock(r, lkb);
queue_cast(r, lkb, 0);
- grant_pending_locks(r);
goto out;
}
/* else fall through and move to convert queue */
@@ -2344,28 +2354,47 @@ static int do_convert(struct dlm_rsb *r, struct dlm_lkb *lkb)
error = -EINPROGRESS;
del_lkb(r, lkb);
add_lkb(r, lkb, DLM_LKSTS_CONVERT);
- send_blocking_asts(r, lkb);
add_timeout(lkb);
goto out;
}
error = -EAGAIN;
- if (force_blocking_asts(lkb))
- send_blocking_asts_all(r, lkb);
queue_cast(r, lkb, -EAGAIN);
-
out:
return error;
}
+static void do_convert_effects(struct dlm_rsb *r, struct dlm_lkb *lkb,
+ int error)
+{
+ switch (error) {
+ case 0:
+ grant_pending_locks(r);
+ /* grant_pending_locks also sends basts */
+ break;
+ case -EAGAIN:
+ if (force_blocking_asts(lkb))
+ send_blocking_asts_all(r, lkb);
+ break;
+ case -EINPROGRESS:
+ send_blocking_asts(r, lkb);
+ break;
+ }
+}
+
static int do_unlock(struct dlm_rsb *r, struct dlm_lkb *lkb)
{
remove_lock(r, lkb);
queue_cast(r, lkb, -DLM_EUNLOCK);
- grant_pending_locks(r);
return -DLM_EUNLOCK;
}
+static void do_unlock_effects(struct dlm_rsb *r, struct dlm_lkb *lkb,
+ int error)
+{
+ grant_pending_locks(r);
+}
+
/* returns: 0 did nothing, -DLM_ECANCEL canceled lock */
static int do_cancel(struct dlm_rsb *r, struct dlm_lkb *lkb)
@@ -2375,12 +2404,18 @@ static int do_cancel(struct dlm_rsb *r, struct dlm_lkb *lkb)
error = revert_lock(r, lkb);
if (error) {
queue_cast(r, lkb, -DLM_ECANCEL);
- grant_pending_locks(r);
return -DLM_ECANCEL;
}
return 0;
}
+static void do_cancel_effects(struct dlm_rsb *r, struct dlm_lkb *lkb,
+ int error)
+{
+ if (error)
+ grant_pending_locks(r);
+}
+
/*
* Four stage 3 varieties:
* _request_lock(), _convert_lock(), _unlock_lock(), _cancel_lock()
@@ -2402,11 +2437,15 @@ static int _request_lock(struct dlm_rsb *r, struct dlm_lkb *lkb)
goto out;
}
- if (is_remote(r))
+ if (is_remote(r)) {
/* receive_request() calls do_request() on remote node */
error = send_request(r, lkb);
- else
+ } else {
error = do_request(r, lkb);
+ /* for remote locks the request_reply is sent
+ between do_request and do_request_effects */
+ do_request_effects(r, lkb, error);
+ }
out:
return error;
}
@@ -2417,11 +2456,15 @@ static int _convert_lock(struct dlm_rsb *r, struct dlm_lkb *lkb)
{
int error;
- if (is_remote(r))
+ if (is_remote(r)) {
/* receive_convert() calls do_convert() on remote node */
error = send_convert(r, lkb);
- else
+ } else {
error = do_convert(r, lkb);
+ /* for remote locks the convert_reply is sent
+ between do_convert and do_convert_effects */
+ do_convert_effects(r, lkb, error);
+ }
return error;
}
@@ -2432,11 +2475,15 @@ static int _unlock_lock(struct dlm_rsb *r, struct dlm_lkb *lkb)
{
int error;
- if (is_remote(r))
+ if (is_remote(r)) {
/* receive_unlock() calls do_unlock() on remote node */
error = send_unlock(r, lkb);
- else
+ } else {
error = do_unlock(r, lkb);
+ /* for remote locks the unlock_reply is sent
+ between do_unlock and do_unlock_effects */
+ do_unlock_effects(r, lkb, error);
+ }
return error;
}
@@ -2447,11 +2494,15 @@ static int _cancel_lock(struct dlm_rsb *r, struct dlm_lkb *lkb)
{
int error;
- if (is_remote(r))
+ if (is_remote(r)) {
/* receive_cancel() calls do_cancel() on remote node */
error = send_cancel(r, lkb);
- else
+ } else {
error = do_cancel(r, lkb);
+ /* for remote locks the cancel_reply is sent
+ between do_cancel and do_cancel_effects */
+ do_cancel_effects(r, lkb, error);
+ }
return error;
}
@@ -3191,6 +3242,7 @@ static void receive_request(struct dlm_ls *ls, struct dlm_message *ms)
attach_lkb(r, lkb);
error = do_request(r, lkb);
send_request_reply(r, lkb, error);
+ do_request_effects(r, lkb, error);
unlock_rsb(r);
put_rsb(r);
@@ -3226,15 +3278,19 @@ static void receive_convert(struct dlm_ls *ls, struct dlm_message *ms)
goto out;
receive_flags(lkb, ms);
+
error = receive_convert_args(ls, lkb, ms);
- if (error)
- goto out_reply;
+ if (error) {
+ send_convert_reply(r, lkb, error);
+ goto out;
+ }
+
reply = !down_conversion(lkb);
error = do_convert(r, lkb);
- out_reply:
if (reply)
send_convert_reply(r, lkb, error);
+ do_convert_effects(r, lkb, error);
out:
unlock_rsb(r);
put_rsb(r);
@@ -3266,13 +3322,16 @@ static void receive_unlock(struct dlm_ls *ls, struct dlm_message *ms)
goto out;
receive_flags(lkb, ms);
+
error = receive_unlock_args(ls, lkb, ms);
- if (error)
- goto out_reply;
+ if (error) {
+ send_unlock_reply(r, lkb, error);
+ goto out;
+ }
error = do_unlock(r, lkb);
- out_reply:
send_unlock_reply(r, lkb, error);
+ do_unlock_effects(r, lkb, error);
out:
unlock_rsb(r);
put_rsb(r);
@@ -3307,6 +3366,7 @@ static void receive_cancel(struct dlm_ls *ls, struct dlm_message *ms)
error = do_cancel(r, lkb);
send_cancel_reply(r, lkb, error);
+ do_cancel_effects(r, lkb, error);
out:
unlock_rsb(r);
put_rsb(r);
diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c
index c010ecfc0d29..26a8bd40400a 100644
--- a/fs/dlm/lockspace.c
+++ b/fs/dlm/lockspace.c
@@ -191,6 +191,18 @@ static int do_uevent(struct dlm_ls *ls, int in)
return error;
}
+static int dlm_uevent(struct kset *kset, struct kobject *kobj,
+ struct kobj_uevent_env *env)
+{
+ struct dlm_ls *ls = container_of(kobj, struct dlm_ls, ls_kobj);
+
+ add_uevent_var(env, "LOCKSPACE=%s", ls->ls_name);
+ return 0;
+}
+
+static struct kset_uevent_ops dlm_uevent_ops = {
+ .uevent = dlm_uevent,
+};
int __init dlm_lockspace_init(void)
{
@@ -199,7 +211,7 @@ int __init dlm_lockspace_init(void)
INIT_LIST_HEAD(&lslist);
spin_lock_init(&lslist_lock);
- dlm_kset = kset_create_and_add("dlm", NULL, kernel_kobj);
+ dlm_kset = kset_create_and_add("dlm", &dlm_uevent_ops, kernel_kobj);
if (!dlm_kset) {
printk(KERN_WARNING "%s: can not create kset\n", __func__);
return -ENOMEM;
diff --git a/fs/dlm/user.c b/fs/dlm/user.c
index e73a4bb572aa..a4bfd31ac45b 100644
--- a/fs/dlm/user.c
+++ b/fs/dlm/user.c
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2006-2009 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2006-2010 Red Hat, Inc. All rights reserved.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
@@ -173,7 +173,7 @@ static int lkb_is_endoflife(struct dlm_lkb *lkb, int sb_status, int type)
/* we could possibly check if the cancel of an orphan has resulted in the lkb
being removed and then remove that lkb from the orphans list and free it */
-void dlm_user_add_ast(struct dlm_lkb *lkb, int type, int bastmode)
+void dlm_user_add_ast(struct dlm_lkb *lkb, int type, int mode)
{
struct dlm_ls *ls;
struct dlm_user_args *ua;
@@ -206,8 +206,10 @@ void dlm_user_add_ast(struct dlm_lkb *lkb, int type, int bastmode)
ast_type = lkb->lkb_ast_type;
lkb->lkb_ast_type |= type;
- if (bastmode)
- lkb->lkb_bastmode = bastmode;
+ if (type == AST_BAST)
+ lkb->lkb_bastmode = mode;
+ else
+ lkb->lkb_castmode = mode;
if (!ast_type) {
kref_get(&lkb->lkb_ref);
diff --git a/fs/dlm/user.h b/fs/dlm/user.h
index 1c9686492286..f196091dd7ff 100644
--- a/fs/dlm/user.h
+++ b/fs/dlm/user.h
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2006-2008 Red Hat, Inc. All rights reserved.
+ * Copyright (C) 2006-2010 Red Hat, Inc. All rights reserved.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
@@ -9,7 +9,7 @@
#ifndef __USER_DOT_H__
#define __USER_DOT_H__
-void dlm_user_add_ast(struct dlm_lkb *lkb, int type, int bastmode);
+void dlm_user_add_ast(struct dlm_lkb *lkb, int type, int mode);
int dlm_user_init(void);
void dlm_user_exit(void);
int dlm_device_deregister(struct dlm_ls *ls);
diff --git a/fs/exec.c b/fs/exec.c
index 0790a107ff7e..cce6bbdbdbb1 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -571,6 +571,9 @@ int setup_arg_pages(struct linux_binprm *bprm,
struct vm_area_struct *prev = NULL;
unsigned long vm_flags;
unsigned long stack_base;
+ unsigned long stack_size;
+ unsigned long stack_expand;
+ unsigned long rlim_stack;
#ifdef CONFIG_STACK_GROWSUP
/* Limit stack size to 1GB */
@@ -627,10 +630,23 @@ int setup_arg_pages(struct linux_binprm *bprm,
goto out_unlock;
}
+ stack_expand = EXTRA_STACK_VM_PAGES * PAGE_SIZE;
+ stack_size = vma->vm_end - vma->vm_start;
+ /*
+ * Align this down to a page boundary as expand_stack
+ * will align it up.
+ */
+ rlim_stack = rlimit(RLIMIT_STACK) & PAGE_MASK;
#ifdef CONFIG_STACK_GROWSUP
- stack_base = vma->vm_end + EXTRA_STACK_VM_PAGES * PAGE_SIZE;
+ if (stack_size + stack_expand > rlim_stack)
+ stack_base = vma->vm_start + rlim_stack;
+ else
+ stack_base = vma->vm_end + stack_expand;
#else
- stack_base = vma->vm_start - EXTRA_STACK_VM_PAGES * PAGE_SIZE;
+ if (stack_size + stack_expand > rlim_stack)
+ stack_base = vma->vm_end - rlim_stack;
+ else
+ stack_base = vma->vm_start - stack_expand;
#endif
ret = expand_stack(vma, stack_base);
if (ret)
diff --git a/fs/exofs/common.h b/fs/exofs/common.h
index b1b178e61718..f0d520312d8b 100644
--- a/fs/exofs/common.h
+++ b/fs/exofs/common.h
@@ -55,6 +55,8 @@
/* exofs Application specific page/attribute */
# define EXOFS_APAGE_FS_DATA (OSD_APAGE_APP_DEFINED_FIRST + 3)
# define EXOFS_ATTR_INODE_DATA 1
+# define EXOFS_ATTR_INODE_FILE_LAYOUT 2
+# define EXOFS_ATTR_INODE_DIR_LAYOUT 3
/*
* The maximum number of files we can have is limited by the size of the
@@ -206,4 +208,41 @@ enum {
(((name_len) + offsetof(struct exofs_dir_entry, name) + \
EXOFS_DIR_ROUND) & ~EXOFS_DIR_ROUND)
+/*
+ * The on-disk (optional) layout structure.
+ * sits in an EXOFS_ATTR_INODE_FILE_LAYOUT or EXOFS_ATTR_INODE_DIR_LAYOUT
+ * attribute, attached to any inode, usually to a directory.
+ */
+
+enum exofs_inode_layout_gen_functions {
+ LAYOUT_MOVING_WINDOW = 0,
+ LAYOUT_IMPLICT = 1,
+};
+
+struct exofs_on_disk_inode_layout {
+ __le16 gen_func; /* One of enum exofs_inode_layout_gen_functions */
+ __le16 pad;
+ union {
+ /* gen_func == LAYOUT_MOVING_WINDOW (default) */
+ struct exofs_layout_sliding_window {
+ __le32 num_devices; /* first n devices in global-table*/
+ } sliding_window __packed;
+
+ /* gen_func == LAYOUT_IMPLICT */
+ struct exofs_layout_implict_list {
+ struct exofs_dt_data_map data_map;
+ /* Variable array of size data_map.cb_num_comps. These
+ * are device indexes of the devices in the global table
+ */
+ __le32 dev_indexes[];
+ } implict __packed;
+ };
+} __packed;
+
+static inline size_t exofs_on_disk_inode_layout_size(unsigned max_devs)
+{
+ return sizeof(struct exofs_on_disk_inode_layout) +
+ max_devs * sizeof(__le32);
+}
+
#endif /*ifndef __EXOFS_COM_H__*/
diff --git a/fs/exofs/exofs.h b/fs/exofs/exofs.h
index c35fd4623986..8442e353309f 100644
--- a/fs/exofs/exofs.h
+++ b/fs/exofs/exofs.h
@@ -55,12 +55,28 @@
/* u64 has problems with printk this will cast it to unsigned long long */
#define _LLU(x) (unsigned long long)(x)
+struct exofs_layout {
+ osd_id s_pid; /* partition ID of file system*/
+
+ /* Our way of looking at the data_map */
+ unsigned stripe_unit;
+ unsigned mirrors_p1;
+
+ unsigned group_width;
+ u64 group_depth;
+ unsigned group_count;
+
+ enum exofs_inode_layout_gen_functions lay_func;
+
+ unsigned s_numdevs; /* Num of devices in array */
+ struct osd_dev *s_ods[0]; /* Variable length */
+};
+
/*
* our extension to the in-memory superblock
*/
struct exofs_sb_info {
struct exofs_fscb s_fscb; /* Written often, pre-allocate*/
- osd_id s_pid; /* partition ID of file system*/
int s_timeout; /* timeout for OSD operations */
uint64_t s_nextid; /* highest object ID used */
uint32_t s_numfiles; /* number of files on fs */
@@ -69,22 +85,27 @@ struct exofs_sb_info {
atomic_t s_curr_pending; /* number of pending commands */
uint8_t s_cred[OSD_CAP_LEN]; /* credential for the fscb */
- struct pnfs_osd_data_map data_map; /* Default raid to use */
- unsigned s_numdevs; /* Num of devices in array */
- struct osd_dev *s_ods[1]; /* Variable length, minimum 1 */
+ struct pnfs_osd_data_map data_map; /* Default raid to use
+ * FIXME: Needed ?
+ */
+/* struct exofs_layout dir_layout;*/ /* Default dir layout */
+ struct exofs_layout layout; /* Default files layout,
+ * contains the variable osd_dev
+ * array. Keep last */
+ struct osd_dev *_min_one_dev[1]; /* Place holder for one dev */
};
/*
* our extension to the in-memory inode
*/
struct exofs_i_info {
+ struct inode vfs_inode; /* normal in-memory inode */
+ wait_queue_head_t i_wq; /* wait queue for inode */
unsigned long i_flags; /* various atomic flags */
uint32_t i_data[EXOFS_IDATA];/*short symlink names and device #s*/
uint32_t i_dir_start_lookup; /* which page to start lookup */
- wait_queue_head_t i_wq; /* wait queue for inode */
uint64_t i_commit_size; /* the object's written length */
uint8_t i_cred[OSD_CAP_LEN];/* all-powerful credential */
- struct inode vfs_inode; /* normal in-memory inode */
};
static inline osd_id exofs_oi_objno(struct exofs_i_info *oi)
@@ -101,7 +122,7 @@ struct exofs_io_state {
void *private;
exofs_io_done_fn done;
- struct exofs_sb_info *sbi;
+ struct exofs_layout *layout;
struct osd_obj_id obj;
u8 *cred;
@@ -109,7 +130,11 @@ struct exofs_io_state {
loff_t offset;
unsigned long length;
void *kern_buff;
- struct bio *bio;
+
+ struct page **pages;
+ unsigned nr_pages;
+ unsigned pgbase;
+ unsigned pages_consumed;
/* Attributes */
unsigned in_attr_len;
@@ -122,6 +147,9 @@ struct exofs_io_state {
struct exofs_per_dev_state {
struct osd_request *or;
struct bio *bio;
+ loff_t offset;
+ unsigned length;
+ unsigned dev;
} per_dev[];
};
@@ -175,6 +203,12 @@ static inline struct exofs_i_info *exofs_i(struct inode *inode)
}
/*
+ * Given a layout, object_number and stripe_index return the associated global
+ * dev_index
+ */
+unsigned exofs_layout_od_id(struct exofs_layout *layout,
+ osd_id obj_no, unsigned layout_index);
+/*
* Maximum count of links to a file
*/
#define EXOFS_LINK_MAX 32000
@@ -189,7 +223,8 @@ void exofs_make_credential(u8 cred_a[OSD_CAP_LEN],
int exofs_read_kern(struct osd_dev *od, u8 *cred, struct osd_obj_id *obj,
u64 offset, void *p, unsigned length);
-int exofs_get_io_state(struct exofs_sb_info *sbi, struct exofs_io_state** ios);
+int exofs_get_io_state(struct exofs_layout *layout,
+ struct exofs_io_state **ios);
void exofs_put_io_state(struct exofs_io_state *ios);
int exofs_check_io(struct exofs_io_state *ios, u64 *resid);
@@ -226,7 +261,7 @@ int exofs_write_begin(struct file *file, struct address_space *mapping,
struct page **pagep, void **fsdata);
extern struct inode *exofs_iget(struct super_block *, unsigned long);
struct inode *exofs_new_inode(struct inode *, int);
-extern int exofs_write_inode(struct inode *, int);
+extern int exofs_write_inode(struct inode *, struct writeback_control *wbc);
extern void exofs_delete_inode(struct inode *);
/* dir.c: */
diff --git a/fs/exofs/inode.c b/fs/exofs/inode.c
index 2afbcebeda71..a17e4b733e35 100644
--- a/fs/exofs/inode.c
+++ b/fs/exofs/inode.c
@@ -41,16 +41,18 @@
enum { BIO_MAX_PAGES_KMALLOC =
(PAGE_SIZE - sizeof(struct bio)) / sizeof(struct bio_vec),
+ MAX_PAGES_KMALLOC =
+ PAGE_SIZE / sizeof(struct page *),
};
struct page_collect {
struct exofs_sb_info *sbi;
- struct request_queue *req_q;
struct inode *inode;
unsigned expected_pages;
struct exofs_io_state *ios;
- struct bio *bio;
+ struct page **pages;
+ unsigned alloc_pages;
unsigned nr_pages;
unsigned long length;
loff_t pg_first; /* keep 64bit also in 32-arches */
@@ -62,15 +64,12 @@ static void _pcol_init(struct page_collect *pcol, unsigned expected_pages,
struct exofs_sb_info *sbi = inode->i_sb->s_fs_info;
pcol->sbi = sbi;
- /* Create master bios on first Q, later on cloning, each clone will be
- * allocated on it's destination Q
- */
- pcol->req_q = osd_request_queue(sbi->s_ods[0]);
pcol->inode = inode;
pcol->expected_pages = expected_pages;
pcol->ios = NULL;
- pcol->bio = NULL;
+ pcol->pages = NULL;
+ pcol->alloc_pages = 0;
pcol->nr_pages = 0;
pcol->length = 0;
pcol->pg_first = -1;
@@ -80,7 +79,8 @@ static void _pcol_reset(struct page_collect *pcol)
{
pcol->expected_pages -= min(pcol->nr_pages, pcol->expected_pages);
- pcol->bio = NULL;
+ pcol->pages = NULL;
+ pcol->alloc_pages = 0;
pcol->nr_pages = 0;
pcol->length = 0;
pcol->pg_first = -1;
@@ -90,38 +90,43 @@ static void _pcol_reset(struct page_collect *pcol)
* it might not end here. don't be left with nothing
*/
if (!pcol->expected_pages)
- pcol->expected_pages = BIO_MAX_PAGES_KMALLOC;
+ pcol->expected_pages = MAX_PAGES_KMALLOC;
}
static int pcol_try_alloc(struct page_collect *pcol)
{
- int pages = min_t(unsigned, pcol->expected_pages,
- BIO_MAX_PAGES_KMALLOC);
+ unsigned pages = min_t(unsigned, pcol->expected_pages,
+ MAX_PAGES_KMALLOC);
if (!pcol->ios) { /* First time allocate io_state */
- int ret = exofs_get_io_state(pcol->sbi, &pcol->ios);
+ int ret = exofs_get_io_state(&pcol->sbi->layout, &pcol->ios);
if (ret)
return ret;
}
+ /* TODO: easily support bio chaining */
+ pages = min_t(unsigned, pages,
+ pcol->sbi->layout.group_width * BIO_MAX_PAGES_KMALLOC);
+
for (; pages; pages >>= 1) {
- pcol->bio = bio_kmalloc(GFP_KERNEL, pages);
- if (likely(pcol->bio))
+ pcol->pages = kmalloc(pages * sizeof(struct page *),
+ GFP_KERNEL);
+ if (likely(pcol->pages)) {
+ pcol->alloc_pages = pages;
return 0;
+ }
}
- EXOFS_ERR("Failed to bio_kmalloc expected_pages=%u\n",
+ EXOFS_ERR("Failed to kmalloc expected_pages=%u\n",
pcol->expected_pages);
return -ENOMEM;
}
static void pcol_free(struct page_collect *pcol)
{
- if (pcol->bio) {
- bio_put(pcol->bio);
- pcol->bio = NULL;
- }
+ kfree(pcol->pages);
+ pcol->pages = NULL;
if (pcol->ios) {
exofs_put_io_state(pcol->ios);
@@ -132,11 +137,10 @@ static void pcol_free(struct page_collect *pcol)
static int pcol_add_page(struct page_collect *pcol, struct page *page,
unsigned len)
{
- int added_len = bio_add_pc_page(pcol->req_q, pcol->bio, page, len, 0);
- if (unlikely(len != added_len))
+ if (unlikely(pcol->nr_pages >= pcol->alloc_pages))
return -ENOMEM;
- ++pcol->nr_pages;
+ pcol->pages[pcol->nr_pages++] = page;
pcol->length += len;
return 0;
}
@@ -181,7 +185,6 @@ static void update_write_page(struct page *page, int ret)
*/
static int __readpages_done(struct page_collect *pcol, bool do_unlock)
{
- struct bio_vec *bvec;
int i;
u64 resid;
u64 good_bytes;
@@ -193,13 +196,13 @@ static int __readpages_done(struct page_collect *pcol, bool do_unlock)
else
good_bytes = pcol->length - resid;
- EXOFS_DBGMSG("readpages_done(0x%lx) good_bytes=0x%llx"
+ EXOFS_DBGMSG2("readpages_done(0x%lx) good_bytes=0x%llx"
" length=0x%lx nr_pages=%u\n",
pcol->inode->i_ino, _LLU(good_bytes), pcol->length,
pcol->nr_pages);
- __bio_for_each_segment(bvec, pcol->bio, i, 0) {
- struct page *page = bvec->bv_page;
+ for (i = 0; i < pcol->nr_pages; i++) {
+ struct page *page = pcol->pages[i];
struct inode *inode = page->mapping->host;
int page_stat;
@@ -218,11 +221,11 @@ static int __readpages_done(struct page_collect *pcol, bool do_unlock)
ret = update_read_page(page, page_stat);
if (do_unlock)
unlock_page(page);
- length += bvec->bv_len;
+ length += PAGE_SIZE;
}
pcol_free(pcol);
- EXOFS_DBGMSG("readpages_done END\n");
+ EXOFS_DBGMSG2("readpages_done END\n");
return ret;
}
@@ -238,11 +241,10 @@ static void readpages_done(struct exofs_io_state *ios, void *p)
static void _unlock_pcol_pages(struct page_collect *pcol, int ret, int rw)
{
- struct bio_vec *bvec;
int i;
- __bio_for_each_segment(bvec, pcol->bio, i, 0) {
- struct page *page = bvec->bv_page;
+ for (i = 0; i < pcol->nr_pages; i++) {
+ struct page *page = pcol->pages[i];
if (rw == READ)
update_read_page(page, ret);
@@ -260,13 +262,14 @@ static int read_exec(struct page_collect *pcol, bool is_sync)
struct page_collect *pcol_copy = NULL;
int ret;
- if (!pcol->bio)
+ if (!pcol->pages)
return 0;
/* see comment in _readpage() about sync reads */
WARN_ON(is_sync && (pcol->nr_pages != 1));
- ios->bio = pcol->bio;
+ ios->pages = pcol->pages;
+ ios->nr_pages = pcol->nr_pages;
ios->length = pcol->length;
ios->offset = pcol->pg_first << PAGE_CACHE_SHIFT;
@@ -290,7 +293,7 @@ static int read_exec(struct page_collect *pcol, bool is_sync)
atomic_inc(&pcol->sbi->s_curr_pending);
- EXOFS_DBGMSG("read_exec obj=0x%llx start=0x%llx length=0x%lx\n",
+ EXOFS_DBGMSG2("read_exec obj=0x%llx start=0x%llx length=0x%lx\n",
ios->obj.id, _LLU(ios->offset), pcol->length);
/* pages ownership was passed to pcol_copy */
@@ -366,7 +369,7 @@ try_again:
goto try_again;
}
- if (!pcol->bio) {
+ if (!pcol->pages) {
ret = pcol_try_alloc(pcol);
if (unlikely(ret))
goto fail;
@@ -448,7 +451,6 @@ static int exofs_readpage(struct file *file, struct page *page)
static void writepages_done(struct exofs_io_state *ios, void *p)
{
struct page_collect *pcol = p;
- struct bio_vec *bvec;
int i;
u64 resid;
u64 good_bytes;
@@ -462,13 +464,13 @@ static void writepages_done(struct exofs_io_state *ios, void *p)
else
good_bytes = pcol->length - resid;
- EXOFS_DBGMSG("writepages_done(0x%lx) good_bytes=0x%llx"
+ EXOFS_DBGMSG2("writepages_done(0x%lx) good_bytes=0x%llx"
" length=0x%lx nr_pages=%u\n",
pcol->inode->i_ino, _LLU(good_bytes), pcol->length,
pcol->nr_pages);
- __bio_for_each_segment(bvec, pcol->bio, i, 0) {
- struct page *page = bvec->bv_page;
+ for (i = 0; i < pcol->nr_pages; i++) {
+ struct page *page = pcol->pages[i];
struct inode *inode = page->mapping->host;
int page_stat;
@@ -485,12 +487,12 @@ static void writepages_done(struct exofs_io_state *ios, void *p)
EXOFS_DBGMSG2(" writepages_done(0x%lx, 0x%lx) status=%d\n",
inode->i_ino, page->index, page_stat);
- length += bvec->bv_len;
+ length += PAGE_SIZE;
}
pcol_free(pcol);
kfree(pcol);
- EXOFS_DBGMSG("writepages_done END\n");
+ EXOFS_DBGMSG2("writepages_done END\n");
}
static int write_exec(struct page_collect *pcol)
@@ -500,7 +502,7 @@ static int write_exec(struct page_collect *pcol)
struct page_collect *pcol_copy = NULL;
int ret;
- if (!pcol->bio)
+ if (!pcol->pages)
return 0;
pcol_copy = kmalloc(sizeof(*pcol_copy), GFP_KERNEL);
@@ -512,9 +514,8 @@ static int write_exec(struct page_collect *pcol)
*pcol_copy = *pcol;
- pcol_copy->bio->bi_rw |= (1 << BIO_RW); /* FIXME: bio_set_dir() */
-
- ios->bio = pcol_copy->bio;
+ ios->pages = pcol_copy->pages;
+ ios->nr_pages = pcol_copy->nr_pages;
ios->offset = pcol_copy->pg_first << PAGE_CACHE_SHIFT;
ios->length = pcol_copy->length;
ios->done = writepages_done;
@@ -527,7 +528,7 @@ static int write_exec(struct page_collect *pcol)
}
atomic_inc(&pcol->sbi->s_curr_pending);
- EXOFS_DBGMSG("write_exec(0x%lx, 0x%llx) start=0x%llx length=0x%lx\n",
+ EXOFS_DBGMSG2("write_exec(0x%lx, 0x%llx) start=0x%llx length=0x%lx\n",
pcol->inode->i_ino, pcol->pg_first, _LLU(ios->offset),
pcol->length);
/* pages ownership was passed to pcol_copy */
@@ -605,7 +606,7 @@ try_again:
goto try_again;
}
- if (!pcol->bio) {
+ if (!pcol->pages) {
ret = pcol_try_alloc(pcol);
if (unlikely(ret))
goto fail;
@@ -616,7 +617,7 @@ try_again:
ret = pcol_add_page(pcol, page, len);
if (unlikely(ret)) {
- EXOFS_DBGMSG("Failed pcol_add_page "
+ EXOFS_DBGMSG2("Failed pcol_add_page "
"nr_pages=%u total_length=0x%lx\n",
pcol->nr_pages, pcol->length);
@@ -663,7 +664,7 @@ static int exofs_writepages(struct address_space *mapping,
if (expected_pages < 32L)
expected_pages = 32L;
- EXOFS_DBGMSG("inode(0x%lx) wbc->start=0x%llx wbc->end=0x%llx "
+ EXOFS_DBGMSG2("inode(0x%lx) wbc->start=0x%llx wbc->end=0x%llx "
"nrpages=%lu start=0x%lx end=0x%lx expected_pages=%ld\n",
mapping->host->i_ino, wbc->range_start, wbc->range_end,
mapping->nrpages, start, end, expected_pages);
@@ -859,20 +860,33 @@ int exofs_setattr(struct dentry *dentry, struct iattr *iattr)
return error;
}
+static const struct osd_attr g_attr_inode_file_layout = ATTR_DEF(
+ EXOFS_APAGE_FS_DATA,
+ EXOFS_ATTR_INODE_FILE_LAYOUT,
+ 0);
+static const struct osd_attr g_attr_inode_dir_layout = ATTR_DEF(
+ EXOFS_APAGE_FS_DATA,
+ EXOFS_ATTR_INODE_DIR_LAYOUT,
+ 0);
+
/*
- * Read an inode from the OSD, and return it as is. We also return the size
- * attribute in the 'obj_size' argument.
+ * Read the Linux inode info from the OSD, and return it as is. In exofs the
+ * inode info is in an application specific page/attribute of the osd-object.
*/
static int exofs_get_inode(struct super_block *sb, struct exofs_i_info *oi,
- struct exofs_fcb *inode, uint64_t *obj_size)
+ struct exofs_fcb *inode)
{
struct exofs_sb_info *sbi = sb->s_fs_info;
- struct osd_attr attrs[2];
+ struct osd_attr attrs[] = {
+ [0] = g_attr_inode_data,
+ [1] = g_attr_inode_file_layout,
+ [2] = g_attr_inode_dir_layout,
+ };
struct exofs_io_state *ios;
+ struct exofs_on_disk_inode_layout *layout;
int ret;
- *obj_size = ~0;
- ret = exofs_get_io_state(sbi, &ios);
+ ret = exofs_get_io_state(&sbi->layout, &ios);
if (unlikely(ret)) {
EXOFS_ERR("%s: exofs_get_io_state failed.\n", __func__);
return ret;
@@ -882,14 +896,25 @@ static int exofs_get_inode(struct super_block *sb, struct exofs_i_info *oi,
exofs_make_credential(oi->i_cred, &ios->obj);
ios->cred = oi->i_cred;
- attrs[0] = g_attr_inode_data;
- attrs[1] = g_attr_logical_length;
+ attrs[1].len = exofs_on_disk_inode_layout_size(sbi->layout.s_numdevs);
+ attrs[2].len = exofs_on_disk_inode_layout_size(sbi->layout.s_numdevs);
+
ios->in_attr = attrs;
ios->in_attr_len = ARRAY_SIZE(attrs);
ret = exofs_sbi_read(ios);
- if (ret)
+ if (unlikely(ret)) {
+ EXOFS_ERR("object(0x%llx) corrupted, return empty file=>%d\n",
+ _LLU(ios->obj.id), ret);
+ memset(inode, 0, sizeof(*inode));
+ inode->i_mode = 0040000 | (0777 & ~022);
+ /* If object is lost on target we might as well enable it's
+ * delete.
+ */
+ if ((ret == -ENOENT) || (ret == -EINVAL))
+ ret = 0;
goto out;
+ }
ret = extract_attr_from_ios(ios, &attrs[0]);
if (ret) {
@@ -901,11 +926,33 @@ static int exofs_get_inode(struct super_block *sb, struct exofs_i_info *oi,
ret = extract_attr_from_ios(ios, &attrs[1]);
if (ret) {
- EXOFS_ERR("%s: extract_attr of logical_length failed\n",
- __func__);
+ EXOFS_ERR("%s: extract_attr of inode_data failed\n", __func__);
+ goto out;
+ }
+ if (attrs[1].len) {
+ layout = attrs[1].val_ptr;
+ if (layout->gen_func != cpu_to_le16(LAYOUT_MOVING_WINDOW)) {
+ EXOFS_ERR("%s: unsupported files layout %d\n",
+ __func__, layout->gen_func);
+ ret = -ENOTSUPP;
+ goto out;
+ }
+ }
+
+ ret = extract_attr_from_ios(ios, &attrs[2]);
+ if (ret) {
+ EXOFS_ERR("%s: extract_attr of inode_data failed\n", __func__);
goto out;
}
- *obj_size = get_unaligned_be64(attrs[1].val_ptr);
+ if (attrs[2].len) {
+ layout = attrs[2].val_ptr;
+ if (layout->gen_func != cpu_to_le16(LAYOUT_MOVING_WINDOW)) {
+ EXOFS_ERR("%s: unsupported meta-data layout %d\n",
+ __func__, layout->gen_func);
+ ret = -ENOTSUPP;
+ goto out;
+ }
+ }
out:
exofs_put_io_state(ios);
@@ -925,7 +972,6 @@ struct inode *exofs_iget(struct super_block *sb, unsigned long ino)
struct exofs_i_info *oi;
struct exofs_fcb fcb;
struct inode *inode;
- uint64_t obj_size;
int ret;
inode = iget_locked(sb, ino);
@@ -937,7 +983,7 @@ struct inode *exofs_iget(struct super_block *sb, unsigned long ino)
__oi_init(oi);
/* read the inode from the osd */
- ret = exofs_get_inode(sb, oi, &fcb, &obj_size);
+ ret = exofs_get_inode(sb, oi, &fcb);
if (ret)
goto bad_inode;
@@ -958,13 +1004,6 @@ struct inode *exofs_iget(struct super_block *sb, unsigned long ino)
inode->i_blkbits = EXOFS_BLKSHIFT;
inode->i_generation = le32_to_cpu(fcb.i_generation);
- if ((inode->i_size != obj_size) &&
- (!exofs_inode_is_fast_symlink(inode))) {
- EXOFS_ERR("WARNING: Size of inode=%llu != object=%llu\n",
- inode->i_size, _LLU(obj_size));
- /* FIXME: call exofs_inode_recovery() */
- }
-
oi->i_dir_start_lookup = 0;
if ((inode->i_nlink == 0) && (inode->i_mode == 0)) {
@@ -1043,7 +1082,7 @@ static void create_done(struct exofs_io_state *ios, void *p)
if (unlikely(ret)) {
EXOFS_ERR("object=0x%llx creation faild in pid=0x%llx",
- _LLU(exofs_oi_objno(oi)), _LLU(sbi->s_pid));
+ _LLU(exofs_oi_objno(oi)), _LLU(sbi->layout.s_pid));
/*TODO: When FS is corrupted creation can fail, object already
* exist. Get rid of this asynchronous creation, if exist
* increment the obj counter and try the next object. Until we
@@ -1104,7 +1143,7 @@ struct inode *exofs_new_inode(struct inode *dir, int mode)
mark_inode_dirty(inode);
- ret = exofs_get_io_state(sbi, &ios);
+ ret = exofs_get_io_state(&sbi->layout, &ios);
if (unlikely(ret)) {
EXOFS_ERR("exofs_new_inode: exofs_get_io_state failed\n");
return ERR_PTR(ret);
@@ -1170,8 +1209,10 @@ static int exofs_update_inode(struct inode *inode, int do_sync)
int ret;
args = kzalloc(sizeof(*args), GFP_KERNEL);
- if (!args)
+ if (!args) {
+ EXOFS_DBGMSG("Faild kzalloc of args\n");
return -ENOMEM;
+ }
fcb = &args->fcb;
@@ -1200,7 +1241,7 @@ static int exofs_update_inode(struct inode *inode, int do_sync)
} else
memcpy(fcb->i_data, oi->i_data, sizeof(fcb->i_data));
- ret = exofs_get_io_state(sbi, &ios);
+ ret = exofs_get_io_state(&sbi->layout, &ios);
if (unlikely(ret)) {
EXOFS_ERR("%s: exofs_get_io_state failed.\n", __func__);
goto free_args;
@@ -1234,13 +1275,14 @@ static int exofs_update_inode(struct inode *inode, int do_sync)
free_args:
kfree(args);
out:
- EXOFS_DBGMSG("ret=>%d\n", ret);
+ EXOFS_DBGMSG("(0x%lx) do_sync=%d ret=>%d\n",
+ inode->i_ino, do_sync, ret);
return ret;
}
-int exofs_write_inode(struct inode *inode, int wait)
+int exofs_write_inode(struct inode *inode, struct writeback_control *wbc)
{
- return exofs_update_inode(inode, wait);
+ return exofs_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
}
/*
@@ -1283,7 +1325,7 @@ void exofs_delete_inode(struct inode *inode)
clear_inode(inode);
- ret = exofs_get_io_state(sbi, &ios);
+ ret = exofs_get_io_state(&sbi->layout, &ios);
if (unlikely(ret)) {
EXOFS_ERR("%s: exofs_get_io_state failed\n", __func__);
return;
diff --git a/fs/exofs/ios.c b/fs/exofs/ios.c
index 5bad01fa1f9f..5293bc411d17 100644
--- a/fs/exofs/ios.c
+++ b/fs/exofs/ios.c
@@ -23,9 +23,13 @@
*/
#include <scsi/scsi_device.h>
+#include <asm/div64.h>
#include "exofs.h"
+#define EXOFS_DBGMSG2(M...) do {} while (0)
+/* #define EXOFS_DBGMSG2 EXOFS_DBGMSG */
+
void exofs_make_credential(u8 cred_a[OSD_CAP_LEN], const struct osd_obj_id *obj)
{
osd_sec_init_nosec_doall_caps(cred_a, obj, false, true);
@@ -64,21 +68,24 @@ out:
return ret;
}
-int exofs_get_io_state(struct exofs_sb_info *sbi, struct exofs_io_state** pios)
+int exofs_get_io_state(struct exofs_layout *layout,
+ struct exofs_io_state **pios)
{
struct exofs_io_state *ios;
/*TODO: Maybe use kmem_cach per sbi of size
- * exofs_io_state_size(sbi->s_numdevs)
+ * exofs_io_state_size(layout->s_numdevs)
*/
- ios = kzalloc(exofs_io_state_size(sbi->s_numdevs), GFP_KERNEL);
+ ios = kzalloc(exofs_io_state_size(layout->s_numdevs), GFP_KERNEL);
if (unlikely(!ios)) {
+ EXOFS_DBGMSG("Faild kzalloc bytes=%d\n",
+ exofs_io_state_size(layout->s_numdevs));
*pios = NULL;
return -ENOMEM;
}
- ios->sbi = sbi;
- ios->obj.partition = sbi->s_pid;
+ ios->layout = layout;
+ ios->obj.partition = layout->s_pid;
*pios = ios;
return 0;
}
@@ -101,6 +108,29 @@ void exofs_put_io_state(struct exofs_io_state *ios)
}
}
+unsigned exofs_layout_od_id(struct exofs_layout *layout,
+ osd_id obj_no, unsigned layout_index)
+{
+/* switch (layout->lay_func) {
+ case LAYOUT_MOVING_WINDOW:
+ {*/
+ unsigned dev_mod = obj_no;
+
+ return (layout_index + dev_mod * layout->mirrors_p1) %
+ layout->s_numdevs;
+/* }
+ case LAYOUT_FUNC_IMPLICT:
+ return layout->devs[layout_index];
+ }*/
+}
+
+static inline struct osd_dev *exofs_ios_od(struct exofs_io_state *ios,
+ unsigned layout_index)
+{
+ return ios->layout->s_ods[
+ exofs_layout_od_id(ios->layout, ios->obj.id, layout_index)];
+}
+
static void _sync_done(struct exofs_io_state *ios, void *p)
{
struct completion *waiting = p;
@@ -168,6 +198,21 @@ static int exofs_io_execute(struct exofs_io_state *ios)
return ret;
}
+static void _clear_bio(struct bio *bio)
+{
+ struct bio_vec *bv;
+ unsigned i;
+
+ __bio_for_each_segment(bv, bio, i, 0) {
+ unsigned this_count = bv->bv_len;
+
+ if (likely(PAGE_SIZE == this_count))
+ clear_highpage(bv->bv_page);
+ else
+ zero_user(bv->bv_page, bv->bv_offset, this_count);
+ }
+}
+
int exofs_check_io(struct exofs_io_state *ios, u64 *resid)
{
enum osd_err_priority acumulated_osd_err = 0;
@@ -176,16 +221,25 @@ int exofs_check_io(struct exofs_io_state *ios, u64 *resid)
for (i = 0; i < ios->numdevs; i++) {
struct osd_sense_info osi;
- int ret = osd_req_decode_sense(ios->per_dev[i].or, &osi);
+ struct osd_request *or = ios->per_dev[i].or;
+ int ret;
+
+ if (unlikely(!or))
+ continue;
+ ret = osd_req_decode_sense(or, &osi);
if (likely(!ret))
continue;
- if (unlikely(ret == -EFAULT)) {
- EXOFS_DBGMSG("%s: EFAULT Need page clear\n", __func__);
- /*FIXME: All the pages in this device range should:
- * clear_highpage(page);
- */
+ if (OSD_ERR_PRI_CLEAR_PAGES == osi.osd_err_pri) {
+ /* start read offset passed endof file */
+ _clear_bio(ios->per_dev[i].bio);
+ EXOFS_DBGMSG("start read offset passed end of file "
+ "offset=0x%llx, length=0x%llx\n",
+ _LLU(ios->per_dev[i].offset),
+ _LLU(ios->per_dev[i].length));
+
+ continue; /* we recovered */
}
if (osi.osd_err_pri >= acumulated_osd_err) {
@@ -205,14 +259,259 @@ int exofs_check_io(struct exofs_io_state *ios, u64 *resid)
return acumulated_lin_err;
}
+/*
+ * L - logical offset into the file
+ *
+ * U - The number of bytes in a stripe within a group
+ *
+ * U = stripe_unit * group_width
+ *
+ * T - The number of bytes striped within a group of component objects
+ * (before advancing to the next group)
+ *
+ * T = stripe_unit * group_width * group_depth
+ *
+ * S - The number of bytes striped across all component objects
+ * before the pattern repeats
+ *
+ * S = stripe_unit * group_width * group_depth * group_count
+ *
+ * M - The "major" (i.e., across all components) stripe number
+ *
+ * M = L / S
+ *
+ * G - Counts the groups from the beginning of the major stripe
+ *
+ * G = (L - (M * S)) / T [or (L % S) / T]
+ *
+ * H - The byte offset within the group
+ *
+ * H = (L - (M * S)) % T [or (L % S) % T]
+ *
+ * N - The "minor" (i.e., across the group) stripe number
+ *
+ * N = H / U
+ *
+ * C - The component index coresponding to L
+ *
+ * C = (H - (N * U)) / stripe_unit + G * group_width
+ * [or (L % U) / stripe_unit + G * group_width]
+ *
+ * O - The component offset coresponding to L
+ *
+ * O = L % stripe_unit + N * stripe_unit + M * group_depth * stripe_unit
+ */
+struct _striping_info {
+ u64 obj_offset;
+ u64 group_length;
+ u64 total_group_length;
+ u64 Major;
+ unsigned dev;
+ unsigned unit_off;
+};
+
+static void _calc_stripe_info(struct exofs_io_state *ios, u64 file_offset,
+ struct _striping_info *si)
+{
+ u32 stripe_unit = ios->layout->stripe_unit;
+ u32 group_width = ios->layout->group_width;
+ u64 group_depth = ios->layout->group_depth;
+
+ u32 U = stripe_unit * group_width;
+ u64 T = U * group_depth;
+ u64 S = T * ios->layout->group_count;
+ u64 M = div64_u64(file_offset, S);
+
+ /*
+ G = (L - (M * S)) / T
+ H = (L - (M * S)) % T
+ */
+ u64 LmodS = file_offset - M * S;
+ u32 G = div64_u64(LmodS, T);
+ u64 H = LmodS - G * T;
+
+ u32 N = div_u64(H, U);
+
+ /* "H - (N * U)" is just "H % U" so it's bound to u32 */
+ si->dev = (u32)(H - (N * U)) / stripe_unit + G * group_width;
+ si->dev *= ios->layout->mirrors_p1;
+
+ div_u64_rem(file_offset, stripe_unit, &si->unit_off);
+
+ si->obj_offset = si->unit_off + (N * stripe_unit) +
+ (M * group_depth * stripe_unit);
+
+ si->group_length = T - H;
+ si->total_group_length = T;
+ si->Major = M;
+}
+
+static int _add_stripe_unit(struct exofs_io_state *ios, unsigned *cur_pg,
+ unsigned pgbase, struct exofs_per_dev_state *per_dev,
+ int cur_len)
+{
+ unsigned pg = *cur_pg;
+ struct request_queue *q =
+ osd_request_queue(exofs_ios_od(ios, per_dev->dev));
+
+ per_dev->length += cur_len;
+
+ if (per_dev->bio == NULL) {
+ unsigned pages_in_stripe = ios->layout->group_width *
+ (ios->layout->stripe_unit / PAGE_SIZE);
+ unsigned bio_size = (ios->nr_pages + pages_in_stripe) /
+ ios->layout->group_width;
+
+ per_dev->bio = bio_kmalloc(GFP_KERNEL, bio_size);
+ if (unlikely(!per_dev->bio)) {
+ EXOFS_DBGMSG("Faild to allocate BIO size=%u\n",
+ bio_size);
+ return -ENOMEM;
+ }
+ }
+
+ while (cur_len > 0) {
+ unsigned pglen = min_t(unsigned, PAGE_SIZE - pgbase, cur_len);
+ unsigned added_len;
+
+ BUG_ON(ios->nr_pages <= pg);
+ cur_len -= pglen;
+
+ added_len = bio_add_pc_page(q, per_dev->bio, ios->pages[pg],
+ pglen, pgbase);
+ if (unlikely(pglen != added_len))
+ return -ENOMEM;
+ pgbase = 0;
+ ++pg;
+ }
+ BUG_ON(cur_len);
+
+ *cur_pg = pg;
+ return 0;
+}
+
+static int _prepare_one_group(struct exofs_io_state *ios, u64 length,
+ struct _striping_info *si, unsigned first_comp)
+{
+ unsigned stripe_unit = ios->layout->stripe_unit;
+ unsigned mirrors_p1 = ios->layout->mirrors_p1;
+ unsigned devs_in_group = ios->layout->group_width * mirrors_p1;
+ unsigned dev = si->dev;
+ unsigned first_dev = dev - (dev % devs_in_group);
+ unsigned comp = first_comp + (dev - first_dev);
+ unsigned max_comp = ios->numdevs ? ios->numdevs - mirrors_p1 : 0;
+ unsigned cur_pg = ios->pages_consumed;
+ int ret = 0;
+
+ while (length) {
+ struct exofs_per_dev_state *per_dev = &ios->per_dev[comp];
+ unsigned cur_len, page_off = 0;
+
+ if (!per_dev->length) {
+ per_dev->dev = dev;
+ if (dev < si->dev) {
+ per_dev->offset = si->obj_offset + stripe_unit -
+ si->unit_off;
+ cur_len = stripe_unit;
+ } else if (dev == si->dev) {
+ per_dev->offset = si->obj_offset;
+ cur_len = stripe_unit - si->unit_off;
+ page_off = si->unit_off & ~PAGE_MASK;
+ BUG_ON(page_off && (page_off != ios->pgbase));
+ } else { /* dev > si->dev */
+ per_dev->offset = si->obj_offset - si->unit_off;
+ cur_len = stripe_unit;
+ }
+
+ if (max_comp < comp)
+ max_comp = comp;
+
+ dev += mirrors_p1;
+ dev = (dev % devs_in_group) + first_dev;
+ } else {
+ cur_len = stripe_unit;
+ }
+ if (cur_len >= length)
+ cur_len = length;
+
+ ret = _add_stripe_unit(ios, &cur_pg, page_off , per_dev,
+ cur_len);
+ if (unlikely(ret))
+ goto out;
+
+ comp += mirrors_p1;
+ comp = (comp % devs_in_group) + first_comp;
+
+ length -= cur_len;
+ }
+out:
+ ios->numdevs = max_comp + mirrors_p1;
+ ios->pages_consumed = cur_pg;
+ return ret;
+}
+
+static int _prepare_for_striping(struct exofs_io_state *ios)
+{
+ u64 length = ios->length;
+ struct _striping_info si;
+ unsigned devs_in_group = ios->layout->group_width *
+ ios->layout->mirrors_p1;
+ unsigned first_comp = 0;
+ int ret = 0;
+
+ _calc_stripe_info(ios, ios->offset, &si);
+
+ if (!ios->pages) {
+ if (ios->kern_buff) {
+ struct exofs_per_dev_state *per_dev = &ios->per_dev[0];
+
+ per_dev->offset = si.obj_offset;
+ per_dev->dev = si.dev;
+
+ /* no cross device without page array */
+ BUG_ON((ios->layout->group_width > 1) &&
+ (si.unit_off + ios->length >
+ ios->layout->stripe_unit));
+ }
+ ios->numdevs = ios->layout->mirrors_p1;
+ return 0;
+ }
+
+ while (length) {
+ if (length < si.group_length)
+ si.group_length = length;
+
+ ret = _prepare_one_group(ios, si.group_length, &si, first_comp);
+ if (unlikely(ret))
+ goto out;
+
+ length -= si.group_length;
+
+ si.group_length = si.total_group_length;
+ si.unit_off = 0;
+ ++si.Major;
+ si.obj_offset = si.Major * ios->layout->stripe_unit *
+ ios->layout->group_depth;
+
+ si.dev = (si.dev - (si.dev % devs_in_group)) + devs_in_group;
+ si.dev %= ios->layout->s_numdevs;
+
+ first_comp += devs_in_group;
+ first_comp %= ios->layout->s_numdevs;
+ }
+
+out:
+ return ret;
+}
+
int exofs_sbi_create(struct exofs_io_state *ios)
{
int i, ret;
- for (i = 0; i < ios->sbi->s_numdevs; i++) {
+ for (i = 0; i < ios->layout->s_numdevs; i++) {
struct osd_request *or;
- or = osd_start_request(ios->sbi->s_ods[i], GFP_KERNEL);
+ or = osd_start_request(exofs_ios_od(ios, i), GFP_KERNEL);
if (unlikely(!or)) {
EXOFS_ERR("%s: osd_start_request failed\n", __func__);
ret = -ENOMEM;
@@ -233,10 +532,10 @@ int exofs_sbi_remove(struct exofs_io_state *ios)
{
int i, ret;
- for (i = 0; i < ios->sbi->s_numdevs; i++) {
+ for (i = 0; i < ios->layout->s_numdevs; i++) {
struct osd_request *or;
- or = osd_start_request(ios->sbi->s_ods[i], GFP_KERNEL);
+ or = osd_start_request(exofs_ios_od(ios, i), GFP_KERNEL);
if (unlikely(!or)) {
EXOFS_ERR("%s: osd_start_request failed\n", __func__);
ret = -ENOMEM;
@@ -253,51 +552,74 @@ out:
return ret;
}
-int exofs_sbi_write(struct exofs_io_state *ios)
+static int _sbi_write_mirror(struct exofs_io_state *ios, int cur_comp)
{
- int i, ret;
+ struct exofs_per_dev_state *master_dev = &ios->per_dev[cur_comp];
+ unsigned dev = ios->per_dev[cur_comp].dev;
+ unsigned last_comp = cur_comp + ios->layout->mirrors_p1;
+ int ret = 0;
- for (i = 0; i < ios->sbi->s_numdevs; i++) {
+ if (ios->pages && !master_dev->length)
+ return 0; /* Just an empty slot */
+
+ for (; cur_comp < last_comp; ++cur_comp, ++dev) {
+ struct exofs_per_dev_state *per_dev = &ios->per_dev[cur_comp];
struct osd_request *or;
- or = osd_start_request(ios->sbi->s_ods[i], GFP_KERNEL);
+ or = osd_start_request(exofs_ios_od(ios, dev), GFP_KERNEL);
if (unlikely(!or)) {
EXOFS_ERR("%s: osd_start_request failed\n", __func__);
ret = -ENOMEM;
goto out;
}
- ios->per_dev[i].or = or;
- ios->numdevs++;
+ per_dev->or = or;
+ per_dev->offset = master_dev->offset;
- if (ios->bio) {
+ if (ios->pages) {
struct bio *bio;
- if (i != 0) {
+ if (per_dev != master_dev) {
bio = bio_kmalloc(GFP_KERNEL,
- ios->bio->bi_max_vecs);
+ master_dev->bio->bi_max_vecs);
if (unlikely(!bio)) {
+ EXOFS_DBGMSG(
+ "Faild to allocate BIO size=%u\n",
+ master_dev->bio->bi_max_vecs);
ret = -ENOMEM;
goto out;
}
- __bio_clone(bio, ios->bio);
+ __bio_clone(bio, master_dev->bio);
bio->bi_bdev = NULL;
bio->bi_next = NULL;
- ios->per_dev[i].bio = bio;
+ per_dev->length = master_dev->length;
+ per_dev->bio = bio;
+ per_dev->dev = dev;
} else {
- bio = ios->bio;
+ bio = master_dev->bio;
+ /* FIXME: bio_set_dir() */
+ bio->bi_rw |= (1 << BIO_RW);
}
- osd_req_write(or, &ios->obj, ios->offset, bio,
- ios->length);
-/* EXOFS_DBGMSG("write sync=%d\n", sync);*/
+ osd_req_write(or, &ios->obj, per_dev->offset, bio,
+ per_dev->length);
+ EXOFS_DBGMSG("write(0x%llx) offset=0x%llx "
+ "length=0x%llx dev=%d\n",
+ _LLU(ios->obj.id), _LLU(per_dev->offset),
+ _LLU(per_dev->length), dev);
} else if (ios->kern_buff) {
- osd_req_write_kern(or, &ios->obj, ios->offset,
+ ret = osd_req_write_kern(or, &ios->obj, per_dev->offset,
ios->kern_buff, ios->length);
-/* EXOFS_DBGMSG("write_kern sync=%d\n", sync);*/
+ if (unlikely(ret))
+ goto out;
+ EXOFS_DBGMSG2("write_kern(0x%llx) offset=0x%llx "
+ "length=0x%llx dev=%d\n",
+ _LLU(ios->obj.id), _LLU(per_dev->offset),
+ _LLU(ios->length), dev);
} else {
osd_req_set_attributes(or, &ios->obj);
-/* EXOFS_DBGMSG("set_attributes sync=%d\n", sync);*/
+ EXOFS_DBGMSG2("obj(0x%llx) set_attributes=%d dev=%d\n",
+ _LLU(ios->obj.id), ios->out_attr_len, dev);
}
if (ios->out_attr)
@@ -308,54 +630,93 @@ int exofs_sbi_write(struct exofs_io_state *ios)
osd_req_add_get_attr_list(or, ios->in_attr,
ios->in_attr_len);
}
- ret = exofs_io_execute(ios);
out:
return ret;
}
-int exofs_sbi_read(struct exofs_io_state *ios)
+int exofs_sbi_write(struct exofs_io_state *ios)
{
- int i, ret;
+ int i;
+ int ret;
- for (i = 0; i < 1; i++) {
- struct osd_request *or;
- unsigned first_dev = (unsigned)ios->obj.id;
+ ret = _prepare_for_striping(ios);
+ if (unlikely(ret))
+ return ret;
- first_dev %= ios->sbi->s_numdevs;
- or = osd_start_request(ios->sbi->s_ods[first_dev], GFP_KERNEL);
- if (unlikely(!or)) {
- EXOFS_ERR("%s: osd_start_request failed\n", __func__);
- ret = -ENOMEM;
- goto out;
- }
- ios->per_dev[i].or = or;
- ios->numdevs++;
+ for (i = 0; i < ios->numdevs; i += ios->layout->mirrors_p1) {
+ ret = _sbi_write_mirror(ios, i);
+ if (unlikely(ret))
+ return ret;
+ }
- if (ios->bio) {
- osd_req_read(or, &ios->obj, ios->offset, ios->bio,
- ios->length);
-/* EXOFS_DBGMSG("read sync=%d\n", sync);*/
- } else if (ios->kern_buff) {
- osd_req_read_kern(or, &ios->obj, ios->offset,
- ios->kern_buff, ios->length);
-/* EXOFS_DBGMSG("read_kern sync=%d\n", sync);*/
- } else {
- osd_req_get_attributes(or, &ios->obj);
-/* EXOFS_DBGMSG("get_attributes sync=%d\n", sync);*/
- }
+ ret = exofs_io_execute(ios);
+ return ret;
+}
- if (ios->out_attr)
- osd_req_add_set_attr_list(or, ios->out_attr,
- ios->out_attr_len);
+static int _sbi_read_mirror(struct exofs_io_state *ios, unsigned cur_comp)
+{
+ struct osd_request *or;
+ struct exofs_per_dev_state *per_dev = &ios->per_dev[cur_comp];
+ unsigned first_dev = (unsigned)ios->obj.id;
- if (ios->in_attr)
- osd_req_add_get_attr_list(or, ios->in_attr,
- ios->in_attr_len);
+ if (ios->pages && !per_dev->length)
+ return 0; /* Just an empty slot */
+
+ first_dev = per_dev->dev + first_dev % ios->layout->mirrors_p1;
+ or = osd_start_request(exofs_ios_od(ios, first_dev), GFP_KERNEL);
+ if (unlikely(!or)) {
+ EXOFS_ERR("%s: osd_start_request failed\n", __func__);
+ return -ENOMEM;
}
- ret = exofs_io_execute(ios);
+ per_dev->or = or;
+
+ if (ios->pages) {
+ osd_req_read(or, &ios->obj, per_dev->offset,
+ per_dev->bio, per_dev->length);
+ EXOFS_DBGMSG("read(0x%llx) offset=0x%llx length=0x%llx"
+ " dev=%d\n", _LLU(ios->obj.id),
+ _LLU(per_dev->offset), _LLU(per_dev->length),
+ first_dev);
+ } else if (ios->kern_buff) {
+ int ret = osd_req_read_kern(or, &ios->obj, per_dev->offset,
+ ios->kern_buff, ios->length);
+ EXOFS_DBGMSG2("read_kern(0x%llx) offset=0x%llx "
+ "length=0x%llx dev=%d ret=>%d\n",
+ _LLU(ios->obj.id), _LLU(per_dev->offset),
+ _LLU(ios->length), first_dev, ret);
+ if (unlikely(ret))
+ return ret;
+ } else {
+ osd_req_get_attributes(or, &ios->obj);
+ EXOFS_DBGMSG2("obj(0x%llx) get_attributes=%d dev=%d\n",
+ _LLU(ios->obj.id), ios->in_attr_len, first_dev);
+ }
+ if (ios->out_attr)
+ osd_req_add_set_attr_list(or, ios->out_attr, ios->out_attr_len);
-out:
+ if (ios->in_attr)
+ osd_req_add_get_attr_list(or, ios->in_attr, ios->in_attr_len);
+
+ return 0;
+}
+
+int exofs_sbi_read(struct exofs_io_state *ios)
+{
+ int i;
+ int ret;
+
+ ret = _prepare_for_striping(ios);
+ if (unlikely(ret))
+ return ret;
+
+ for (i = 0; i < ios->numdevs; i += ios->layout->mirrors_p1) {
+ ret = _sbi_read_mirror(ios, i);
+ if (unlikely(ret))
+ return ret;
+ }
+
+ ret = exofs_io_execute(ios);
return ret;
}
@@ -380,42 +741,82 @@ int extract_attr_from_ios(struct exofs_io_state *ios, struct osd_attr *attr)
return -EIO;
}
+static int _truncate_mirrors(struct exofs_io_state *ios, unsigned cur_comp,
+ struct osd_attr *attr)
+{
+ int last_comp = cur_comp + ios->layout->mirrors_p1;
+
+ for (; cur_comp < last_comp; ++cur_comp) {
+ struct exofs_per_dev_state *per_dev = &ios->per_dev[cur_comp];
+ struct osd_request *or;
+
+ or = osd_start_request(exofs_ios_od(ios, cur_comp), GFP_KERNEL);
+ if (unlikely(!or)) {
+ EXOFS_ERR("%s: osd_start_request failed\n", __func__);
+ return -ENOMEM;
+ }
+ per_dev->or = or;
+
+ osd_req_set_attributes(or, &ios->obj);
+ osd_req_add_set_attr_list(or, attr, 1);
+ }
+
+ return 0;
+}
+
int exofs_oi_truncate(struct exofs_i_info *oi, u64 size)
{
struct exofs_sb_info *sbi = oi->vfs_inode.i_sb->s_fs_info;
struct exofs_io_state *ios;
- struct osd_attr attr;
- __be64 newsize;
+ struct exofs_trunc_attr {
+ struct osd_attr attr;
+ __be64 newsize;
+ } *size_attrs;
+ struct _striping_info si;
int i, ret;
- if (exofs_get_io_state(sbi, &ios))
- return -ENOMEM;
+ ret = exofs_get_io_state(&sbi->layout, &ios);
+ if (unlikely(ret))
+ return ret;
+
+ size_attrs = kcalloc(ios->layout->group_width, sizeof(*size_attrs),
+ GFP_KERNEL);
+ if (unlikely(!size_attrs)) {
+ ret = -ENOMEM;
+ goto out;
+ }
ios->obj.id = exofs_oi_objno(oi);
ios->cred = oi->i_cred;
- newsize = cpu_to_be64(size);
- attr = g_attr_logical_length;
- attr.val_ptr = &newsize;
+ ios->numdevs = ios->layout->s_numdevs;
+ _calc_stripe_info(ios, size, &si);
- for (i = 0; i < sbi->s_numdevs; i++) {
- struct osd_request *or;
+ for (i = 0; i < ios->layout->group_width; ++i) {
+ struct exofs_trunc_attr *size_attr = &size_attrs[i];
+ u64 obj_size;
- or = osd_start_request(sbi->s_ods[i], GFP_KERNEL);
- if (unlikely(!or)) {
- EXOFS_ERR("%s: osd_start_request failed\n", __func__);
- ret = -ENOMEM;
- goto out;
- }
- ios->per_dev[i].or = or;
- ios->numdevs++;
+ if (i < si.dev)
+ obj_size = si.obj_offset +
+ ios->layout->stripe_unit - si.unit_off;
+ else if (i == si.dev)
+ obj_size = si.obj_offset;
+ else /* i > si.dev */
+ obj_size = si.obj_offset - si.unit_off;
- osd_req_set_attributes(or, &ios->obj);
- osd_req_add_set_attr_list(or, &attr, 1);
+ size_attr->newsize = cpu_to_be64(obj_size);
+ size_attr->attr = g_attr_logical_length;
+ size_attr->attr.val_ptr = &size_attr->newsize;
+
+ ret = _truncate_mirrors(ios, i * ios->layout->mirrors_p1,
+ &size_attr->attr);
+ if (unlikely(ret))
+ goto out;
}
ret = exofs_io_execute(ios);
out:
+ kfree(size_attrs);
exofs_put_io_state(ios);
return ret;
}
diff --git a/fs/exofs/super.c b/fs/exofs/super.c
index a1d1e77b12eb..6cf5e4e84d61 100644
--- a/fs/exofs/super.c
+++ b/fs/exofs/super.c
@@ -210,7 +210,7 @@ int exofs_sync_fs(struct super_block *sb, int wait)
sbi = sb->s_fs_info;
fscb = &sbi->s_fscb;
- ret = exofs_get_io_state(sbi, &ios);
+ ret = exofs_get_io_state(&sbi->layout, &ios);
if (ret)
goto out;
@@ -264,12 +264,12 @@ static void _exofs_print_device(const char *msg, const char *dev_path,
void exofs_free_sbi(struct exofs_sb_info *sbi)
{
- while (sbi->s_numdevs) {
- int i = --sbi->s_numdevs;
- struct osd_dev *od = sbi->s_ods[i];
+ while (sbi->layout.s_numdevs) {
+ int i = --sbi->layout.s_numdevs;
+ struct osd_dev *od = sbi->layout.s_ods[i];
if (od) {
- sbi->s_ods[i] = NULL;
+ sbi->layout.s_ods[i] = NULL;
osduld_put_device(od);
}
}
@@ -298,7 +298,8 @@ static void exofs_put_super(struct super_block *sb)
msecs_to_jiffies(100));
}
- _exofs_print_device("Unmounting", NULL, sbi->s_ods[0], sbi->s_pid);
+ _exofs_print_device("Unmounting", NULL, sbi->layout.s_ods[0],
+ sbi->layout.s_pid);
exofs_free_sbi(sbi);
sb->s_fs_info = NULL;
@@ -307,6 +308,8 @@ static void exofs_put_super(struct super_block *sb)
static int _read_and_match_data_map(struct exofs_sb_info *sbi, unsigned numdevs,
struct exofs_device_table *dt)
{
+ u64 stripe_length;
+
sbi->data_map.odm_num_comps =
le32_to_cpu(dt->dt_data_map.cb_num_comps);
sbi->data_map.odm_stripe_unit =
@@ -320,14 +323,63 @@ static int _read_and_match_data_map(struct exofs_sb_info *sbi, unsigned numdevs,
sbi->data_map.odm_raid_algorithm =
le32_to_cpu(dt->dt_data_map.cb_raid_algorithm);
-/* FIXME: Hard coded mirror only for now. if not so do not mount */
- if ((sbi->data_map.odm_num_comps != numdevs) ||
- (sbi->data_map.odm_stripe_unit != EXOFS_BLKSIZE) ||
- (sbi->data_map.odm_raid_algorithm != PNFS_OSD_RAID_0) ||
- (sbi->data_map.odm_mirror_cnt != (numdevs - 1)))
+/* FIXME: Only raid0 for now. if not so, do not mount */
+ if (sbi->data_map.odm_num_comps != numdevs) {
+ EXOFS_ERR("odm_num_comps(%u) != numdevs(%u)\n",
+ sbi->data_map.odm_num_comps, numdevs);
return -EINVAL;
- else
- return 0;
+ }
+ if (sbi->data_map.odm_raid_algorithm != PNFS_OSD_RAID_0) {
+ EXOFS_ERR("Only RAID_0 for now\n");
+ return -EINVAL;
+ }
+ if (0 != (numdevs % (sbi->data_map.odm_mirror_cnt + 1))) {
+ EXOFS_ERR("Data Map wrong, numdevs=%d mirrors=%d\n",
+ numdevs, sbi->data_map.odm_mirror_cnt);
+ return -EINVAL;
+ }
+
+ if (0 != (sbi->data_map.odm_stripe_unit & ~PAGE_MASK)) {
+ EXOFS_ERR("Stripe Unit(0x%llx)"
+ " must be Multples of PAGE_SIZE(0x%lx)\n",
+ _LLU(sbi->data_map.odm_stripe_unit), PAGE_SIZE);
+ return -EINVAL;
+ }
+
+ sbi->layout.stripe_unit = sbi->data_map.odm_stripe_unit;
+ sbi->layout.mirrors_p1 = sbi->data_map.odm_mirror_cnt + 1;
+
+ if (sbi->data_map.odm_group_width) {
+ sbi->layout.group_width = sbi->data_map.odm_group_width;
+ sbi->layout.group_depth = sbi->data_map.odm_group_depth;
+ if (!sbi->layout.group_depth) {
+ EXOFS_ERR("group_depth == 0 && group_width != 0\n");
+ return -EINVAL;
+ }
+ sbi->layout.group_count = sbi->data_map.odm_num_comps /
+ sbi->layout.mirrors_p1 /
+ sbi->data_map.odm_group_width;
+ } else {
+ if (sbi->data_map.odm_group_depth) {
+ printk(KERN_NOTICE "Warning: group_depth ignored "
+ "group_width == 0 && group_depth == %d\n",
+ sbi->data_map.odm_group_depth);
+ sbi->data_map.odm_group_depth = 0;
+ }
+ sbi->layout.group_width = sbi->data_map.odm_num_comps /
+ sbi->layout.mirrors_p1;
+ sbi->layout.group_depth = -1;
+ sbi->layout.group_count = 1;
+ }
+
+ stripe_length = (u64)sbi->layout.group_width * sbi->layout.stripe_unit;
+ if (stripe_length >= (1ULL << 32)) {
+ EXOFS_ERR("Total Stripe length(0x%llx)"
+ " >= 32bit is not supported\n", _LLU(stripe_length));
+ return -EINVAL;
+ }
+
+ return 0;
}
/* @odi is valid only as long as @fscb_dev is valid */
@@ -361,7 +413,7 @@ static int exofs_read_lookup_dev_table(struct exofs_sb_info **psbi,
{
struct exofs_sb_info *sbi = *psbi;
struct osd_dev *fscb_od;
- struct osd_obj_id obj = {.partition = sbi->s_pid,
+ struct osd_obj_id obj = {.partition = sbi->layout.s_pid,
.id = EXOFS_DEVTABLE_ID};
struct exofs_device_table *dt;
unsigned table_bytes = table_count * sizeof(dt->dt_dev_table[0]) +
@@ -376,9 +428,9 @@ static int exofs_read_lookup_dev_table(struct exofs_sb_info **psbi,
return -ENOMEM;
}
- fscb_od = sbi->s_ods[0];
- sbi->s_ods[0] = NULL;
- sbi->s_numdevs = 0;
+ fscb_od = sbi->layout.s_ods[0];
+ sbi->layout.s_ods[0] = NULL;
+ sbi->layout.s_numdevs = 0;
ret = exofs_read_kern(fscb_od, sbi->s_cred, &obj, 0, dt, table_bytes);
if (unlikely(ret)) {
EXOFS_ERR("ERROR: reading device table\n");
@@ -397,14 +449,15 @@ static int exofs_read_lookup_dev_table(struct exofs_sb_info **psbi,
goto out;
if (likely(numdevs > 1)) {
- unsigned size = numdevs * sizeof(sbi->s_ods[0]);
+ unsigned size = numdevs * sizeof(sbi->layout.s_ods[0]);
sbi = krealloc(sbi, sizeof(*sbi) + size, GFP_KERNEL);
if (unlikely(!sbi)) {
ret = -ENOMEM;
goto out;
}
- memset(&sbi->s_ods[1], 0, size - sizeof(sbi->s_ods[0]));
+ memset(&sbi->layout.s_ods[1], 0,
+ size - sizeof(sbi->layout.s_ods[0]));
*psbi = sbi;
}
@@ -427,8 +480,8 @@ static int exofs_read_lookup_dev_table(struct exofs_sb_info **psbi,
* line. We always keep them in device-table order.
*/
if (fscb_od && osduld_device_same(fscb_od, &odi)) {
- sbi->s_ods[i] = fscb_od;
- ++sbi->s_numdevs;
+ sbi->layout.s_ods[i] = fscb_od;
+ ++sbi->layout.s_numdevs;
fscb_od = NULL;
continue;
}
@@ -441,8 +494,8 @@ static int exofs_read_lookup_dev_table(struct exofs_sb_info **psbi,
goto out;
}
- sbi->s_ods[i] = od;
- ++sbi->s_numdevs;
+ sbi->layout.s_ods[i] = od;
+ ++sbi->layout.s_numdevs;
/* Read the fscb of the other devices to make sure the FS
* partition is there.
@@ -499,9 +552,15 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent)
goto free_sbi;
}
- sbi->s_ods[0] = od;
- sbi->s_numdevs = 1;
- sbi->s_pid = opts->pid;
+ /* Default layout in case we do not have a device-table */
+ sbi->layout.stripe_unit = PAGE_SIZE;
+ sbi->layout.mirrors_p1 = 1;
+ sbi->layout.group_width = 1;
+ sbi->layout.group_depth = -1;
+ sbi->layout.group_count = 1;
+ sbi->layout.s_ods[0] = od;
+ sbi->layout.s_numdevs = 1;
+ sbi->layout.s_pid = opts->pid;
sbi->s_timeout = opts->timeout;
/* fill in some other data by hand */
@@ -514,7 +573,7 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent)
sb->s_bdev = NULL;
sb->s_dev = 0;
- obj.partition = sbi->s_pid;
+ obj.partition = sbi->layout.s_pid;
obj.id = EXOFS_SUPER_ID;
exofs_make_credential(sbi->s_cred, &obj);
@@ -578,13 +637,13 @@ static int exofs_fill_super(struct super_block *sb, void *data, int silent)
goto free_sbi;
}
- _exofs_print_device("Mounting", opts->dev_name, sbi->s_ods[0],
- sbi->s_pid);
+ _exofs_print_device("Mounting", opts->dev_name, sbi->layout.s_ods[0],
+ sbi->layout.s_pid);
return 0;
free_sbi:
EXOFS_ERR("Unable to mount exofs on %s pid=0x%llx err=%d\n",
- opts->dev_name, sbi->s_pid, ret);
+ opts->dev_name, sbi->layout.s_pid, ret);
exofs_free_sbi(sbi);
return ret;
}
@@ -627,7 +686,7 @@ static int exofs_statfs(struct dentry *dentry, struct kstatfs *buf)
uint8_t cred_a[OSD_CAP_LEN];
int ret;
- ret = exofs_get_io_state(sbi, &ios);
+ ret = exofs_get_io_state(&sbi->layout, &ios);
if (ret) {
EXOFS_DBGMSG("exofs_get_io_state failed.\n");
return ret;
diff --git a/fs/ext2/ext2.h b/fs/ext2/ext2.h
index 061914add3cf..0b038e47ad2f 100644
--- a/fs/ext2/ext2.h
+++ b/fs/ext2/ext2.h
@@ -118,7 +118,7 @@ extern unsigned long ext2_count_free (struct buffer_head *, unsigned);
/* inode.c */
extern struct inode *ext2_iget (struct super_block *, unsigned long);
-extern int ext2_write_inode (struct inode *, int);
+extern int ext2_write_inode (struct inode *, struct writeback_control *);
extern void ext2_delete_inode (struct inode *);
extern int ext2_sync_inode (struct inode *);
extern int ext2_get_block(struct inode *, sector_t, struct buffer_head *, int);
diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c
index 71b032c65a02..36ae1cac767c 100644
--- a/fs/ext2/inode.c
+++ b/fs/ext2/inode.c
@@ -41,6 +41,8 @@ MODULE_AUTHOR("Remy Card and others");
MODULE_DESCRIPTION("Second Extended Filesystem");
MODULE_LICENSE("GPL");
+static int __ext2_write_inode(struct inode *inode, int do_sync);
+
/*
* Test whether an inode is a fast symlink.
*/
@@ -64,7 +66,7 @@ void ext2_delete_inode (struct inode * inode)
goto no_delete;
EXT2_I(inode)->i_dtime = get_seconds();
mark_inode_dirty(inode);
- ext2_write_inode(inode, inode_needs_sync(inode));
+ __ext2_write_inode(inode, inode_needs_sync(inode));
inode->i_size = 0;
if (inode->i_blocks)
@@ -1335,7 +1337,7 @@ bad_inode:
return ERR_PTR(ret);
}
-int ext2_write_inode(struct inode *inode, int do_sync)
+static int __ext2_write_inode(struct inode *inode, int do_sync)
{
struct ext2_inode_info *ei = EXT2_I(inode);
struct super_block *sb = inode->i_sb;
@@ -1440,6 +1442,11 @@ int ext2_write_inode(struct inode *inode, int do_sync)
return err;
}
+int ext2_write_inode(struct inode *inode, struct writeback_control *wbc)
+{
+ return __ext2_write_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
+}
+
int ext2_sync_inode(struct inode *inode)
{
struct writeback_control wbc = {
diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index 455e6e6e5cb9..7aca55fcc976 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -3096,7 +3096,7 @@ out_brelse:
* `stuff()' is running, and the new i_size will be lost. Plus the inode
* will no longer be on the superblock's dirty inode list.
*/
-int ext3_write_inode(struct inode *inode, int wait)
+int ext3_write_inode(struct inode *inode, struct writeback_control *wbc)
{
if (current->flags & PF_MEMALLOC)
return 0;
@@ -3107,7 +3107,7 @@ int ext3_write_inode(struct inode *inode, int wait)
return -EIO;
}
- if (!wait)
+ if (wbc->sync_mode != WB_SYNC_ALL)
return 0;
return ext3_force_commit(inode->i_sb);
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index 22bc7435d913..d2f37a5516c7 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -97,8 +97,8 @@ unsigned ext4_init_block_bitmap(struct super_block *sb, struct buffer_head *bh,
/* If checksum is bad mark all blocks used to prevent allocation
* essentially implementing a per-group read-only flag. */
if (!ext4_group_desc_csum_verify(sbi, block_group, gdp)) {
- ext4_error(sb, __func__,
- "Checksum bad for group %u", block_group);
+ ext4_error(sb, "Checksum bad for group %u",
+ block_group);
ext4_free_blks_set(sb, gdp, 0);
ext4_free_inodes_set(sb, gdp, 0);
ext4_itable_unused_set(sb, gdp, 0);
@@ -130,8 +130,7 @@ unsigned ext4_init_block_bitmap(struct super_block *sb, struct buffer_head *bh,
* to make sure we calculate the right free blocks
*/
group_blocks = ext4_blocks_count(sbi->s_es) -
- le32_to_cpu(sbi->s_es->s_first_data_block) -
- (EXT4_BLOCKS_PER_GROUP(sb) * (ngroups - 1));
+ ext4_group_first_block_no(sb, ngroups - 1);
} else {
group_blocks = EXT4_BLOCKS_PER_GROUP(sb);
}
@@ -189,9 +188,6 @@ unsigned ext4_init_block_bitmap(struct super_block *sb, struct buffer_head *bh,
* when a file system is mounted (see ext4_fill_super).
*/
-
-#define in_range(b, first, len) ((b) >= (first) && (b) <= (first) + (len) - 1)
-
/**
* ext4_get_group_desc() -- load group descriptor from disk
* @sb: super block
@@ -210,10 +206,8 @@ struct ext4_group_desc * ext4_get_group_desc(struct super_block *sb,
struct ext4_sb_info *sbi = EXT4_SB(sb);
if (block_group >= ngroups) {
- ext4_error(sb, "ext4_get_group_desc",
- "block_group >= groups_count - "
- "block_group = %u, groups_count = %u",
- block_group, ngroups);
+ ext4_error(sb, "block_group >= groups_count - block_group = %u,"
+ " groups_count = %u", block_group, ngroups);
return NULL;
}
@@ -221,8 +215,7 @@ struct ext4_group_desc * ext4_get_group_desc(struct super_block *sb,
group_desc = block_group >> EXT4_DESC_PER_BLOCK_BITS(sb);
offset = block_group & (EXT4_DESC_PER_BLOCK(sb) - 1);
if (!sbi->s_group_desc[group_desc]) {
- ext4_error(sb, "ext4_get_group_desc",
- "Group descriptor not loaded - "
+ ext4_error(sb, "Group descriptor not loaded - "
"block_group = %u, group_desc = %u, desc = %u",
block_group, group_desc, offset);
return NULL;
@@ -282,9 +275,7 @@ static int ext4_valid_block_bitmap(struct super_block *sb,
return 1;
err_out:
- ext4_error(sb, __func__,
- "Invalid block bitmap - "
- "block_group = %d, block = %llu",
+ ext4_error(sb, "Invalid block bitmap - block_group = %d, block = %llu",
block_group, bitmap_blk);
return 0;
}
@@ -311,8 +302,7 @@ ext4_read_block_bitmap(struct super_block *sb, ext4_group_t block_group)
bitmap_blk = ext4_block_bitmap(sb, desc);
bh = sb_getblk(sb, bitmap_blk);
if (unlikely(!bh)) {
- ext4_error(sb, __func__,
- "Cannot read block bitmap - "
+ ext4_error(sb, "Cannot read block bitmap - "
"block_group = %u, block_bitmap = %llu",
block_group, bitmap_blk);
return NULL;
@@ -354,8 +344,7 @@ ext4_read_block_bitmap(struct super_block *sb, ext4_group_t block_group)
set_bitmap_uptodate(bh);
if (bh_submit_read(bh) < 0) {
put_bh(bh);
- ext4_error(sb, __func__,
- "Cannot read block bitmap - "
+ ext4_error(sb, "Cannot read block bitmap - "
"block_group = %u, block_bitmap = %llu",
block_group, bitmap_blk);
return NULL;
@@ -419,8 +408,7 @@ void ext4_add_groupblocks(handle_t *handle, struct super_block *sb,
in_range(block, ext4_inode_table(sb, desc), sbi->s_itb_per_group) ||
in_range(block + count - 1, ext4_inode_table(sb, desc),
sbi->s_itb_per_group)) {
- ext4_error(sb, __func__,
- "Adding blocks in system zones - "
+ ext4_error(sb, "Adding blocks in system zones - "
"Block = %llu, count = %lu",
block, count);
goto error_return;
@@ -453,8 +441,7 @@ void ext4_add_groupblocks(handle_t *handle, struct super_block *sb,
BUFFER_TRACE(bitmap_bh, "clear bit");
if (!ext4_clear_bit_atomic(ext4_group_lock_ptr(sb, block_group),
bit + i, bitmap_bh->b_data)) {
- ext4_error(sb, __func__,
- "bit already cleared for block %llu",
+ ext4_error(sb, "bit already cleared for block %llu",
(ext4_fsblk_t)(block + i));
BUFFER_TRACE(bitmap_bh, "bit already cleared");
} else {
diff --git a/fs/ext4/block_validity.c b/fs/ext4/block_validity.c
index a60ab9aad57d..983f0e127493 100644
--- a/fs/ext4/block_validity.c
+++ b/fs/ext4/block_validity.c
@@ -205,14 +205,14 @@ void ext4_release_system_zone(struct super_block *sb)
entry = rb_entry(n, struct ext4_system_zone, node);
kmem_cache_free(ext4_system_zone_cachep, entry);
if (!parent)
- EXT4_SB(sb)->system_blks.rb_node = NULL;
+ EXT4_SB(sb)->system_blks = RB_ROOT;
else if (parent->rb_left == n)
parent->rb_left = NULL;
else if (parent->rb_right == n)
parent->rb_right = NULL;
n = parent;
}
- EXT4_SB(sb)->system_blks.rb_node = NULL;
+ EXT4_SB(sb)->system_blks = RB_ROOT;
}
/*
diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c
index 9dc93168e262..86cb6d86a048 100644
--- a/fs/ext4/dir.c
+++ b/fs/ext4/dir.c
@@ -83,10 +83,12 @@ int ext4_check_dir_entry(const char *function, struct inode *dir,
error_msg = "inode out of bounds";
if (error_msg != NULL)
- ext4_error(dir->i_sb, function,
- "bad entry in directory #%lu: %s - "
- "offset=%u, inode=%u, rec_len=%d, name_len=%d",
- dir->i_ino, error_msg, offset,
+ __ext4_error(dir->i_sb, function,
+ "bad entry in directory #%lu: %s - block=%llu"
+ "offset=%u(%u), inode=%u, rec_len=%d, name_len=%d",
+ dir->i_ino, error_msg,
+ (unsigned long long) bh->b_blocknr,
+ (unsigned) (offset%bh->b_size), offset,
le32_to_cpu(de->inode),
rlen, de->name_len);
return error_msg == NULL ? 1 : 0;
@@ -150,7 +152,7 @@ static int ext4_readdir(struct file *filp,
*/
if (!bh) {
if (!dir_has_error) {
- ext4_error(sb, __func__, "directory #%lu "
+ ext4_error(sb, "directory #%lu "
"contains a hole at offset %Lu",
inode->i_ino,
(unsigned long long) filp->f_pos);
@@ -303,7 +305,7 @@ static void free_rb_tree_fname(struct rb_root *root)
kfree(old);
}
if (!parent)
- root->rb_node = NULL;
+ *root = RB_ROOT;
else if (parent->rb_left == n)
parent->rb_left = NULL;
else if (parent->rb_right == n)
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 874d169a193e..bf938cf7c5f0 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -53,6 +53,12 @@
#define ext4_debug(f, a...) do {} while (0)
#endif
+#define EXT4_ERROR_INODE(inode, fmt, a...) \
+ ext4_error_inode(__func__, (inode), (fmt), ## a);
+
+#define EXT4_ERROR_FILE(file, fmt, a...) \
+ ext4_error_file(__func__, (file), (fmt), ## a);
+
/* data type for block offset of block group */
typedef int ext4_grpblk_t;
@@ -133,14 +139,14 @@ struct mpage_da_data {
int pages_written;
int retval;
};
-#define DIO_AIO_UNWRITTEN 0x1
+#define EXT4_IO_UNWRITTEN 0x1
typedef struct ext4_io_end {
struct list_head list; /* per-file finished AIO list */
struct inode *inode; /* file being written to */
unsigned int flag; /* unwritten or not */
- int error; /* I/O error code */
- ext4_lblk_t offset; /* offset in the file */
- size_t size; /* size of the extent */
+ struct page *page; /* page struct for buffer write */
+ loff_t offset; /* offset in the file */
+ ssize_t size; /* size of the extent */
struct work_struct work; /* data work queue */
} ext4_io_end_t;
@@ -284,10 +290,12 @@ struct flex_groups {
#define EXT4_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/
#define EXT4_HUGE_FILE_FL 0x00040000 /* Set to each huge file */
#define EXT4_EXTENTS_FL 0x00080000 /* Inode uses extents */
+#define EXT4_EA_INODE_FL 0x00200000 /* Inode used for large EA */
+#define EXT4_EOFBLOCKS_FL 0x00400000 /* Blocks allocated beyond EOF */
#define EXT4_RESERVED_FL 0x80000000 /* reserved for ext4 lib */
-#define EXT4_FL_USER_VISIBLE 0x000BDFFF /* User visible flags */
-#define EXT4_FL_USER_MODIFIABLE 0x000B80FF /* User modifiable flags */
+#define EXT4_FL_USER_VISIBLE 0x004BDFFF /* User visible flags */
+#define EXT4_FL_USER_MODIFIABLE 0x004B80FF /* User modifiable flags */
/* Flags that should be inherited by new inodes from their parent. */
#define EXT4_FL_INHERITED (EXT4_SECRM_FL | EXT4_UNRM_FL | EXT4_COMPR_FL |\
@@ -313,17 +321,6 @@ static inline __u32 ext4_mask_flags(umode_t mode, __u32 flags)
return flags & EXT4_OTHER_FLMASK;
}
-/*
- * Inode dynamic state flags
- */
-#define EXT4_STATE_JDATA 0x00000001 /* journaled data exists */
-#define EXT4_STATE_NEW 0x00000002 /* inode is newly created */
-#define EXT4_STATE_XATTR 0x00000004 /* has in-inode xattrs */
-#define EXT4_STATE_NO_EXPAND 0x00000008 /* No space for expansion */
-#define EXT4_STATE_DA_ALLOC_CLOSE 0x00000010 /* Alloc DA blks on close */
-#define EXT4_STATE_EXT_MIGRATE 0x00000020 /* Inode is migrating */
-#define EXT4_STATE_DIO_UNWRITTEN 0x00000040 /* need convert on dio done*/
-
/* Used to pass group descriptor data when online resize is done */
struct ext4_new_group_input {
__u32 group; /* Group number for this data */
@@ -364,19 +361,20 @@ struct ext4_new_group_data {
/* caller is from the direct IO path, request to creation of an
unitialized extents if not allocated, split the uninitialized
extent if blocks has been preallocated already*/
-#define EXT4_GET_BLOCKS_DIO 0x0008
+#define EXT4_GET_BLOCKS_PRE_IO 0x0008
#define EXT4_GET_BLOCKS_CONVERT 0x0010
-#define EXT4_GET_BLOCKS_DIO_CREATE_EXT (EXT4_GET_BLOCKS_DIO|\
+#define EXT4_GET_BLOCKS_IO_CREATE_EXT (EXT4_GET_BLOCKS_PRE_IO|\
+ EXT4_GET_BLOCKS_CREATE_UNINIT_EXT)
+ /* Convert extent to initialized after IO complete */
+#define EXT4_GET_BLOCKS_IO_CONVERT_EXT (EXT4_GET_BLOCKS_CONVERT|\
EXT4_GET_BLOCKS_CREATE_UNINIT_EXT)
- /* Convert extent to initialized after direct IO complete */
-#define EXT4_GET_BLOCKS_DIO_CONVERT_EXT (EXT4_GET_BLOCKS_CONVERT|\
- EXT4_GET_BLOCKS_DIO_CREATE_EXT)
/*
* Flags used by ext4_free_blocks
*/
#define EXT4_FREE_BLOCKS_METADATA 0x0001
#define EXT4_FREE_BLOCKS_FORGET 0x0002
+#define EXT4_FREE_BLOCKS_VALIDATED 0x0004
/*
* ioctl commands
@@ -630,7 +628,7 @@ struct ext4_inode_info {
* near to their parent directory's inode.
*/
ext4_group_t i_block_group;
- __u32 i_state; /* Dynamic state flags for ext4 */
+ unsigned long i_state_flags; /* Dynamic state flags */
ext4_lblk_t i_dir_start_lookup;
#ifdef CONFIG_EXT4_FS_XATTR
@@ -708,8 +706,9 @@ struct ext4_inode_info {
qsize_t i_reserved_quota;
#endif
- /* completed async DIOs that might need unwritten extents handling */
- struct list_head i_aio_dio_complete_list;
+ /* completed IOs that might need unwritten extents handling */
+ struct list_head i_completed_io_list;
+ spinlock_t i_completed_io_lock;
/* current io_end structure for async DIO write*/
ext4_io_end_t *cur_aio_dio;
@@ -760,6 +759,7 @@ struct ext4_inode_info {
#define EXT4_MOUNT_QUOTA 0x80000 /* Some quota option set */
#define EXT4_MOUNT_USRQUOTA 0x100000 /* "old" user quota */
#define EXT4_MOUNT_GRPQUOTA 0x200000 /* "old" group quota */
+#define EXT4_MOUNT_DIOREAD_NOLOCK 0x400000 /* Enable support for dio read nolocking */
#define EXT4_MOUNT_JOURNAL_CHECKSUM 0x800000 /* Journal checksums */
#define EXT4_MOUNT_JOURNAL_ASYNC_COMMIT 0x1000000 /* Journal Async Commit */
#define EXT4_MOUNT_I_VERSION 0x2000000 /* i_version support */
@@ -1014,7 +1014,7 @@ struct ext4_sb_info {
atomic_t s_lock_busy;
/* locality groups */
- struct ext4_locality_group *s_locality_groups;
+ struct ext4_locality_group __percpu *s_locality_groups;
/* for write statistics */
unsigned long s_sectors_written_start;
@@ -1050,6 +1050,34 @@ static inline int ext4_valid_inum(struct super_block *sb, unsigned long ino)
(ino >= EXT4_FIRST_INO(sb) &&
ino <= le32_to_cpu(EXT4_SB(sb)->s_es->s_inodes_count));
}
+
+/*
+ * Inode dynamic state flags
+ */
+enum {
+ EXT4_STATE_JDATA, /* journaled data exists */
+ EXT4_STATE_NEW, /* inode is newly created */
+ EXT4_STATE_XATTR, /* has in-inode xattrs */
+ EXT4_STATE_NO_EXPAND, /* No space for expansion */
+ EXT4_STATE_DA_ALLOC_CLOSE, /* Alloc DA blks on close */
+ EXT4_STATE_EXT_MIGRATE, /* Inode is migrating */
+ EXT4_STATE_DIO_UNWRITTEN, /* need convert on dio done*/
+};
+
+static inline int ext4_test_inode_state(struct inode *inode, int bit)
+{
+ return test_bit(bit, &EXT4_I(inode)->i_state_flags);
+}
+
+static inline void ext4_set_inode_state(struct inode *inode, int bit)
+{
+ set_bit(bit, &EXT4_I(inode)->i_state_flags);
+}
+
+static inline void ext4_clear_inode_state(struct inode *inode, int bit)
+{
+ clear_bit(bit, &EXT4_I(inode)->i_state_flags);
+}
#else
/* Assume that user mode programs are passing in an ext4fs superblock, not
* a kernel struct super_block. This will allow us to call the feature-test
@@ -1126,6 +1154,8 @@ static inline int ext4_valid_inum(struct super_block *sb, unsigned long ino)
#define EXT4_FEATURE_INCOMPAT_64BIT 0x0080
#define EXT4_FEATURE_INCOMPAT_MMP 0x0100
#define EXT4_FEATURE_INCOMPAT_FLEX_BG 0x0200
+#define EXT4_FEATURE_INCOMPAT_EA_INODE 0x0400 /* EA in inode */
+#define EXT4_FEATURE_INCOMPAT_DIRDATA 0x1000 /* data in dirent */
#define EXT4_FEATURE_COMPAT_SUPP EXT2_FEATURE_COMPAT_EXT_ATTR
#define EXT4_FEATURE_INCOMPAT_SUPP (EXT4_FEATURE_INCOMPAT_FILETYPE| \
@@ -1416,7 +1446,7 @@ int ext4_get_block(struct inode *inode, sector_t iblock,
struct buffer_head *bh_result, int create);
extern struct inode *ext4_iget(struct super_block *, unsigned long);
-extern int ext4_write_inode(struct inode *, int);
+extern int ext4_write_inode(struct inode *, struct writeback_control *);
extern int ext4_setattr(struct dentry *, struct iattr *);
extern int ext4_getattr(struct vfsmount *mnt, struct dentry *dentry,
struct kstat *stat);
@@ -1439,7 +1469,7 @@ extern int ext4_block_truncate_page(handle_t *handle,
struct address_space *mapping, loff_t from);
extern int ext4_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf);
extern qsize_t *ext4_get_reserved_space(struct inode *inode);
-extern int flush_aio_dio_completed_IO(struct inode *inode);
+extern int flush_completed_IO(struct inode *inode);
extern void ext4_da_update_reserve_space(struct inode *inode,
int used, int quota_claim);
/* ioctl.c */
@@ -1465,13 +1495,20 @@ extern int ext4_group_extend(struct super_block *sb,
ext4_fsblk_t n_blocks_count);
/* super.c */
-extern void ext4_error(struct super_block *, const char *, const char *, ...)
+extern void __ext4_error(struct super_block *, const char *, const char *, ...)
+ __attribute__ ((format (printf, 3, 4)));
+#define ext4_error(sb, message...) __ext4_error(sb, __func__, ## message)
+extern void ext4_error_inode(const char *, struct inode *, const char *, ...)
+ __attribute__ ((format (printf, 3, 4)));
+extern void ext4_error_file(const char *, struct file *, const char *, ...)
__attribute__ ((format (printf, 3, 4)));
extern void __ext4_std_error(struct super_block *, const char *, int);
extern void ext4_abort(struct super_block *, const char *, const char *, ...)
__attribute__ ((format (printf, 3, 4)));
-extern void ext4_warning(struct super_block *, const char *, const char *, ...)
+extern void __ext4_warning(struct super_block *, const char *,
+ const char *, ...)
__attribute__ ((format (printf, 3, 4)));
+#define ext4_warning(sb, message...) __ext4_warning(sb, __func__, ## message)
extern void ext4_msg(struct super_block *, const char *, const char *, ...)
__attribute__ ((format (printf, 3, 4)));
extern void ext4_grp_locked_error(struct super_block *, ext4_group_t,
@@ -1744,7 +1781,7 @@ extern void ext4_ext_release(struct super_block *);
extern long ext4_fallocate(struct inode *inode, int mode, loff_t offset,
loff_t len);
extern int ext4_convert_unwritten_extents(struct inode *inode, loff_t offset,
- loff_t len);
+ ssize_t len);
extern int ext4_get_blocks(handle_t *handle, struct inode *inode,
sector_t block, unsigned int max_blocks,
struct buffer_head *bh, int flags);
@@ -1756,6 +1793,15 @@ extern int ext4_move_extents(struct file *o_filp, struct file *d_filp,
__u64 len, __u64 *moved_len);
+/* BH_Uninit flag: blocks are allocated but uninitialized on disk */
+enum ext4_state_bits {
+ BH_Uninit /* blocks are allocated but uninitialized on disk */
+ = BH_JBDPrivateStart,
+};
+
+BUFFER_FNS(Uninit, uninit)
+TAS_BUFFER_FNS(Uninit, uninit)
+
/*
* Add new method to test wether block and inode bitmaps are properly
* initialized. With uninit_bg reading the block from disk is not enough
@@ -1773,6 +1819,8 @@ static inline void set_bitmap_uptodate(struct buffer_head *bh)
set_bit(BH_BITMAP_UPTODATE, &(bh)->b_state);
}
+#define in_range(b, first, len) ((b) >= (first) && (b) <= (first) + (len) - 1)
+
#endif /* __KERNEL__ */
#endif /* _EXT4_H */
diff --git a/fs/ext4/ext4_jbd2.c b/fs/ext4/ext4_jbd2.c
index b57e5c711b6d..53d2764d71ca 100644
--- a/fs/ext4/ext4_jbd2.c
+++ b/fs/ext4/ext4_jbd2.c
@@ -125,14 +125,14 @@ int __ext4_handle_dirty_metadata(const char *where, handle_t *handle,
ext4_journal_abort_handle(where, __func__, bh,
handle, err);
} else {
- if (inode && bh)
+ if (inode)
mark_buffer_dirty_inode(bh, inode);
else
mark_buffer_dirty(bh);
if (inode && inode_needs_sync(inode)) {
sync_dirty_buffer(bh);
if (buffer_req(bh) && !buffer_uptodate(bh)) {
- ext4_error(inode->i_sb, __func__,
+ ext4_error(inode->i_sb,
"IO error syncing inode, "
"inode=%lu, block=%llu",
inode->i_ino,
diff --git a/fs/ext4/ext4_jbd2.h b/fs/ext4/ext4_jbd2.h
index 05eca817d704..b79ad5126468 100644
--- a/fs/ext4/ext4_jbd2.h
+++ b/fs/ext4/ext4_jbd2.h
@@ -304,4 +304,28 @@ static inline int ext4_should_writeback_data(struct inode *inode)
return 0;
}
+/*
+ * This function controls whether or not we should try to go down the
+ * dioread_nolock code paths, which makes it safe to avoid taking
+ * i_mutex for direct I/O reads. This only works for extent-based
+ * files, and it doesn't work for nobh or if data journaling is
+ * enabled, since the dioread_nolock code uses b_private to pass
+ * information back to the I/O completion handler, and this conflicts
+ * with the jbd's use of b_private.
+ */
+static inline int ext4_should_dioread_nolock(struct inode *inode)
+{
+ if (!test_opt(inode->i_sb, DIOREAD_NOLOCK))
+ return 0;
+ if (test_opt(inode->i_sb, NOBH))
+ return 0;
+ if (!S_ISREG(inode->i_mode))
+ return 0;
+ if (!(EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL))
+ return 0;
+ if (ext4_should_journal_data(inode))
+ return 0;
+ return 1;
+}
+
#endif /* _EXT4_JBD2_H */
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 765a4826b118..94c8ee81f5e1 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -195,8 +195,7 @@ static ext4_fsblk_t ext4_ext_find_goal(struct inode *inode,
if (S_ISREG(inode->i_mode))
block_group++;
}
- bg_start = (block_group * EXT4_BLOCKS_PER_GROUP(inode->i_sb)) +
- le32_to_cpu(EXT4_SB(inode->i_sb)->s_es->s_first_data_block);
+ bg_start = ext4_group_first_block_no(inode->i_sb, block_group);
last_block = ext4_blocks_count(EXT4_SB(inode->i_sb)->s_es) - 1;
/*
@@ -440,7 +439,7 @@ static int __ext4_ext_check(const char *function, struct inode *inode,
return 0;
corrupted:
- ext4_error(inode->i_sb, function,
+ __ext4_error(inode->i_sb, function,
"bad header/extent in inode #%lu: %s - magic %x, "
"entries %u, max %u(%u), depth %u(%u)",
inode->i_ino, error_msg, le16_to_cpu(eh->eh_magic),
@@ -703,7 +702,12 @@ ext4_ext_find_extent(struct inode *inode, ext4_lblk_t block,
}
eh = ext_block_hdr(bh);
ppos++;
- BUG_ON(ppos > depth);
+ if (unlikely(ppos > depth)) {
+ put_bh(bh);
+ EXT4_ERROR_INODE(inode,
+ "ppos %d > depth %d", ppos, depth);
+ goto err;
+ }
path[ppos].p_bh = bh;
path[ppos].p_hdr = eh;
i--;
@@ -749,7 +753,12 @@ int ext4_ext_insert_index(handle_t *handle, struct inode *inode,
if (err)
return err;
- BUG_ON(logical == le32_to_cpu(curp->p_idx->ei_block));
+ if (unlikely(logical == le32_to_cpu(curp->p_idx->ei_block))) {
+ EXT4_ERROR_INODE(inode,
+ "logical %d == ei_block %d!",
+ logical, le32_to_cpu(curp->p_idx->ei_block));
+ return -EIO;
+ }
len = EXT_MAX_INDEX(curp->p_hdr) - curp->p_idx;
if (logical > le32_to_cpu(curp->p_idx->ei_block)) {
/* insert after */
@@ -779,9 +788,17 @@ int ext4_ext_insert_index(handle_t *handle, struct inode *inode,
ext4_idx_store_pblock(ix, ptr);
le16_add_cpu(&curp->p_hdr->eh_entries, 1);
- BUG_ON(le16_to_cpu(curp->p_hdr->eh_entries)
- > le16_to_cpu(curp->p_hdr->eh_max));
- BUG_ON(ix > EXT_LAST_INDEX(curp->p_hdr));
+ if (unlikely(le16_to_cpu(curp->p_hdr->eh_entries)
+ > le16_to_cpu(curp->p_hdr->eh_max))) {
+ EXT4_ERROR_INODE(inode,
+ "logical %d == ei_block %d!",
+ logical, le32_to_cpu(curp->p_idx->ei_block));
+ return -EIO;
+ }
+ if (unlikely(ix > EXT_LAST_INDEX(curp->p_hdr))) {
+ EXT4_ERROR_INODE(inode, "ix > EXT_LAST_INDEX!");
+ return -EIO;
+ }
err = ext4_ext_dirty(handle, inode, curp);
ext4_std_error(inode->i_sb, err);
@@ -819,7 +836,10 @@ static int ext4_ext_split(handle_t *handle, struct inode *inode,
/* if current leaf will be split, then we should use
* border from split point */
- BUG_ON(path[depth].p_ext > EXT_MAX_EXTENT(path[depth].p_hdr));
+ if (unlikely(path[depth].p_ext > EXT_MAX_EXTENT(path[depth].p_hdr))) {
+ EXT4_ERROR_INODE(inode, "p_ext > EXT_MAX_EXTENT!");
+ return -EIO;
+ }
if (path[depth].p_ext != EXT_MAX_EXTENT(path[depth].p_hdr)) {
border = path[depth].p_ext[1].ee_block;
ext_debug("leaf will be split."
@@ -860,7 +880,11 @@ static int ext4_ext_split(handle_t *handle, struct inode *inode,
/* initialize new leaf */
newblock = ablocks[--a];
- BUG_ON(newblock == 0);
+ if (unlikely(newblock == 0)) {
+ EXT4_ERROR_INODE(inode, "newblock == 0!");
+ err = -EIO;
+ goto cleanup;
+ }
bh = sb_getblk(inode->i_sb, newblock);
if (!bh) {
err = -EIO;
@@ -880,7 +904,14 @@ static int ext4_ext_split(handle_t *handle, struct inode *inode,
ex = EXT_FIRST_EXTENT(neh);
/* move remainder of path[depth] to the new leaf */
- BUG_ON(path[depth].p_hdr->eh_entries != path[depth].p_hdr->eh_max);
+ if (unlikely(path[depth].p_hdr->eh_entries !=
+ path[depth].p_hdr->eh_max)) {
+ EXT4_ERROR_INODE(inode, "eh_entries %d != eh_max %d!",
+ path[depth].p_hdr->eh_entries,
+ path[depth].p_hdr->eh_max);
+ err = -EIO;
+ goto cleanup;
+ }
/* start copy from next extent */
/* TODO: we could do it by single memmove */
m = 0;
@@ -927,7 +958,11 @@ static int ext4_ext_split(handle_t *handle, struct inode *inode,
/* create intermediate indexes */
k = depth - at - 1;
- BUG_ON(k < 0);
+ if (unlikely(k < 0)) {
+ EXT4_ERROR_INODE(inode, "k %d < 0!", k);
+ err = -EIO;
+ goto cleanup;
+ }
if (k)
ext_debug("create %d intermediate indices\n", k);
/* insert new index into current index block */
@@ -964,8 +999,14 @@ static int ext4_ext_split(handle_t *handle, struct inode *inode,
ext_debug("cur 0x%p, last 0x%p\n", path[i].p_idx,
EXT_MAX_INDEX(path[i].p_hdr));
- BUG_ON(EXT_MAX_INDEX(path[i].p_hdr) !=
- EXT_LAST_INDEX(path[i].p_hdr));
+ if (unlikely(EXT_MAX_INDEX(path[i].p_hdr) !=
+ EXT_LAST_INDEX(path[i].p_hdr))) {
+ EXT4_ERROR_INODE(inode,
+ "EXT_MAX_INDEX != EXT_LAST_INDEX ee_block %d!",
+ le32_to_cpu(path[i].p_ext->ee_block));
+ err = -EIO;
+ goto cleanup;
+ }
while (path[i].p_idx <= EXT_MAX_INDEX(path[i].p_hdr)) {
ext_debug("%d: move %d:%llu in new index %llu\n", i,
le32_to_cpu(path[i].p_idx->ei_block),
@@ -1203,7 +1244,10 @@ ext4_ext_search_left(struct inode *inode, struct ext4_ext_path *path,
struct ext4_extent *ex;
int depth, ee_len;
- BUG_ON(path == NULL);
+ if (unlikely(path == NULL)) {
+ EXT4_ERROR_INODE(inode, "path == NULL *logical %d!", *logical);
+ return -EIO;
+ }
depth = path->p_depth;
*phys = 0;
@@ -1217,15 +1261,33 @@ ext4_ext_search_left(struct inode *inode, struct ext4_ext_path *path,
ex = path[depth].p_ext;
ee_len = ext4_ext_get_actual_len(ex);
if (*logical < le32_to_cpu(ex->ee_block)) {
- BUG_ON(EXT_FIRST_EXTENT(path[depth].p_hdr) != ex);
+ if (unlikely(EXT_FIRST_EXTENT(path[depth].p_hdr) != ex)) {
+ EXT4_ERROR_INODE(inode,
+ "EXT_FIRST_EXTENT != ex *logical %d ee_block %d!",
+ *logical, le32_to_cpu(ex->ee_block));
+ return -EIO;
+ }
while (--depth >= 0) {
ix = path[depth].p_idx;
- BUG_ON(ix != EXT_FIRST_INDEX(path[depth].p_hdr));
+ if (unlikely(ix != EXT_FIRST_INDEX(path[depth].p_hdr))) {
+ EXT4_ERROR_INODE(inode,
+ "ix (%d) != EXT_FIRST_INDEX (%d) (depth %d)!",
+ ix != NULL ? ix->ei_block : 0,
+ EXT_FIRST_INDEX(path[depth].p_hdr) != NULL ?
+ EXT_FIRST_INDEX(path[depth].p_hdr)->ei_block : 0,
+ depth);
+ return -EIO;
+ }
}
return 0;
}
- BUG_ON(*logical < (le32_to_cpu(ex->ee_block) + ee_len));
+ if (unlikely(*logical < (le32_to_cpu(ex->ee_block) + ee_len))) {
+ EXT4_ERROR_INODE(inode,
+ "logical %d < ee_block %d + ee_len %d!",
+ *logical, le32_to_cpu(ex->ee_block), ee_len);
+ return -EIO;
+ }
*logical = le32_to_cpu(ex->ee_block) + ee_len - 1;
*phys = ext_pblock(ex) + ee_len - 1;
@@ -1251,7 +1313,10 @@ ext4_ext_search_right(struct inode *inode, struct ext4_ext_path *path,
int depth; /* Note, NOT eh_depth; depth from top of tree */
int ee_len;
- BUG_ON(path == NULL);
+ if (unlikely(path == NULL)) {
+ EXT4_ERROR_INODE(inode, "path == NULL *logical %d!", *logical);
+ return -EIO;
+ }
depth = path->p_depth;
*phys = 0;
@@ -1265,17 +1330,32 @@ ext4_ext_search_right(struct inode *inode, struct ext4_ext_path *path,
ex = path[depth].p_ext;
ee_len = ext4_ext_get_actual_len(ex);
if (*logical < le32_to_cpu(ex->ee_block)) {
- BUG_ON(EXT_FIRST_EXTENT(path[depth].p_hdr) != ex);
+ if (unlikely(EXT_FIRST_EXTENT(path[depth].p_hdr) != ex)) {
+ EXT4_ERROR_INODE(inode,
+ "first_extent(path[%d].p_hdr) != ex",
+ depth);
+ return -EIO;
+ }
while (--depth >= 0) {
ix = path[depth].p_idx;
- BUG_ON(ix != EXT_FIRST_INDEX(path[depth].p_hdr));
+ if (unlikely(ix != EXT_FIRST_INDEX(path[depth].p_hdr))) {
+ EXT4_ERROR_INODE(inode,
+ "ix != EXT_FIRST_INDEX *logical %d!",
+ *logical);
+ return -EIO;
+ }
}
*logical = le32_to_cpu(ex->ee_block);
*phys = ext_pblock(ex);
return 0;
}
- BUG_ON(*logical < (le32_to_cpu(ex->ee_block) + ee_len));
+ if (unlikely(*logical < (le32_to_cpu(ex->ee_block) + ee_len))) {
+ EXT4_ERROR_INODE(inode,
+ "logical %d < ee_block %d + ee_len %d!",
+ *logical, le32_to_cpu(ex->ee_block), ee_len);
+ return -EIO;
+ }
if (ex != EXT_LAST_EXTENT(path[depth].p_hdr)) {
/* next allocated block in this leaf */
@@ -1414,8 +1494,12 @@ static int ext4_ext_correct_indexes(handle_t *handle, struct inode *inode,
eh = path[depth].p_hdr;
ex = path[depth].p_ext;
- BUG_ON(ex == NULL);
- BUG_ON(eh == NULL);
+
+ if (unlikely(ex == NULL || eh == NULL)) {
+ EXT4_ERROR_INODE(inode,
+ "ex %p == NULL or eh %p == NULL", ex, eh);
+ return -EIO;
+ }
if (depth == 0) {
/* there is no tree at all */
@@ -1538,8 +1622,9 @@ int ext4_ext_try_to_merge(struct inode *inode,
merge_done = 1;
WARN_ON(eh->eh_entries == 0);
if (!eh->eh_entries)
- ext4_error(inode->i_sb, "ext4_ext_try_to_merge",
- "inode#%lu, eh->eh_entries = 0!", inode->i_ino);
+ ext4_error(inode->i_sb,
+ "inode#%lu, eh->eh_entries = 0!",
+ inode->i_ino);
}
return merge_done;
@@ -1612,13 +1697,19 @@ int ext4_ext_insert_extent(handle_t *handle, struct inode *inode,
ext4_lblk_t next;
unsigned uninitialized = 0;
- BUG_ON(ext4_ext_get_actual_len(newext) == 0);
+ if (unlikely(ext4_ext_get_actual_len(newext) == 0)) {
+ EXT4_ERROR_INODE(inode, "ext4_ext_get_actual_len(newext) == 0");
+ return -EIO;
+ }
depth = ext_depth(inode);
ex = path[depth].p_ext;
- BUG_ON(path[depth].p_hdr == NULL);
+ if (unlikely(path[depth].p_hdr == NULL)) {
+ EXT4_ERROR_INODE(inode, "path[%d].p_hdr == NULL", depth);
+ return -EIO;
+ }
/* try to insert block into found extent and return */
- if (ex && (flag != EXT4_GET_BLOCKS_DIO_CREATE_EXT)
+ if (ex && !(flag & EXT4_GET_BLOCKS_PRE_IO)
&& ext4_can_extents_be_merged(inode, ex, newext)) {
ext_debug("append [%d]%d block to %d:[%d]%d (from %llu)\n",
ext4_ext_is_uninitialized(newext),
@@ -1739,7 +1830,7 @@ has_space:
merge:
/* try to merge extents to the right */
- if (flag != EXT4_GET_BLOCKS_DIO_CREATE_EXT)
+ if (!(flag & EXT4_GET_BLOCKS_PRE_IO))
ext4_ext_try_to_merge(inode, path, nearex);
/* try to merge extents to the left */
@@ -1787,7 +1878,11 @@ int ext4_ext_walk_space(struct inode *inode, ext4_lblk_t block,
}
depth = ext_depth(inode);
- BUG_ON(path[depth].p_hdr == NULL);
+ if (unlikely(path[depth].p_hdr == NULL)) {
+ EXT4_ERROR_INODE(inode, "path[%d].p_hdr == NULL", depth);
+ err = -EIO;
+ break;
+ }
ex = path[depth].p_ext;
next = ext4_ext_next_allocated_block(path);
@@ -1838,7 +1933,11 @@ int ext4_ext_walk_space(struct inode *inode, ext4_lblk_t block,
cbex.ec_type = EXT4_EXT_CACHE_EXTENT;
}
- BUG_ON(cbex.ec_len == 0);
+ if (unlikely(cbex.ec_len == 0)) {
+ EXT4_ERROR_INODE(inode, "cbex.ec_len == 0");
+ err = -EIO;
+ break;
+ }
err = func(inode, path, &cbex, ex, cbdata);
ext4_ext_drop_refs(path);
@@ -1952,7 +2051,7 @@ ext4_ext_in_cache(struct inode *inode, ext4_lblk_t block,
BUG_ON(cex->ec_type != EXT4_EXT_CACHE_GAP &&
cex->ec_type != EXT4_EXT_CACHE_EXTENT);
- if (block >= cex->ec_block && block < cex->ec_block + cex->ec_len) {
+ if (in_range(block, cex->ec_block, cex->ec_len)) {
ex->ee_block = cpu_to_le32(cex->ec_block);
ext4_ext_store_pblock(ex, cex->ec_start);
ex->ee_len = cpu_to_le16(cex->ec_len);
@@ -1981,7 +2080,10 @@ static int ext4_ext_rm_idx(handle_t *handle, struct inode *inode,
/* free index block */
path--;
leaf = idx_pblock(path->p_idx);
- BUG_ON(path->p_hdr->eh_entries == 0);
+ if (unlikely(path->p_hdr->eh_entries == 0)) {
+ EXT4_ERROR_INODE(inode, "path->p_hdr->eh_entries == 0");
+ return -EIO;
+ }
err = ext4_ext_get_access(handle, inode, path);
if (err)
return err;
@@ -2119,8 +2221,10 @@ ext4_ext_rm_leaf(handle_t *handle, struct inode *inode,
if (!path[depth].p_hdr)
path[depth].p_hdr = ext_block_hdr(path[depth].p_bh);
eh = path[depth].p_hdr;
- BUG_ON(eh == NULL);
-
+ if (unlikely(path[depth].p_hdr == NULL)) {
+ EXT4_ERROR_INODE(inode, "path[%d].p_hdr == NULL", depth);
+ return -EIO;
+ }
/* find where to start removing */
ex = EXT_LAST_EXTENT(eh);
@@ -2983,7 +3087,7 @@ fix_extent_len:
ext4_ext_dirty(handle, inode, path + depth);
return err;
}
-static int ext4_convert_unwritten_extents_dio(handle_t *handle,
+static int ext4_convert_unwritten_extents_endio(handle_t *handle,
struct inode *inode,
struct ext4_ext_path *path)
{
@@ -3063,8 +3167,8 @@ ext4_ext_handle_uninitialized_extents(handle_t *handle, struct inode *inode,
flags, allocated);
ext4_ext_show_leaf(inode, path);
- /* DIO get_block() before submit the IO, split the extent */
- if (flags == EXT4_GET_BLOCKS_DIO_CREATE_EXT) {
+ /* get_block() before submit the IO, split the extent */
+ if ((flags & EXT4_GET_BLOCKS_PRE_IO)) {
ret = ext4_split_unwritten_extents(handle,
inode, path, iblock,
max_blocks, flags);
@@ -3074,14 +3178,16 @@ ext4_ext_handle_uninitialized_extents(handle_t *handle, struct inode *inode,
* completed
*/
if (io)
- io->flag = DIO_AIO_UNWRITTEN;
+ io->flag = EXT4_IO_UNWRITTEN;
else
- EXT4_I(inode)->i_state |= EXT4_STATE_DIO_UNWRITTEN;
+ ext4_set_inode_state(inode, EXT4_STATE_DIO_UNWRITTEN);
+ if (ext4_should_dioread_nolock(inode))
+ set_buffer_uninit(bh_result);
goto out;
}
- /* async DIO end_io complete, convert the filled extent to written */
- if (flags == EXT4_GET_BLOCKS_DIO_CONVERT_EXT) {
- ret = ext4_convert_unwritten_extents_dio(handle, inode,
+ /* IO end_io complete, convert the filled extent to written */
+ if ((flags & EXT4_GET_BLOCKS_CONVERT)) {
+ ret = ext4_convert_unwritten_extents_endio(handle, inode,
path);
if (ret >= 0)
ext4_update_inode_fsync_trans(handle, inode, 1);
@@ -3185,7 +3291,7 @@ int ext4_ext_get_blocks(handle_t *handle, struct inode *inode,
{
struct ext4_ext_path *path = NULL;
struct ext4_extent_header *eh;
- struct ext4_extent newex, *ex;
+ struct ext4_extent newex, *ex, *last_ex;
ext4_fsblk_t newblock;
int err = 0, depth, ret, cache_type;
unsigned int allocated = 0;
@@ -3237,10 +3343,10 @@ int ext4_ext_get_blocks(handle_t *handle, struct inode *inode,
* this situation is possible, though, _during_ tree modification;
* this is why assert can't be put in ext4_ext_find_extent()
*/
- if (path[depth].p_ext == NULL && depth != 0) {
- ext4_error(inode->i_sb, __func__, "bad extent address "
- "inode: %lu, iblock: %d, depth: %d",
- inode->i_ino, iblock, depth);
+ if (unlikely(path[depth].p_ext == NULL && depth != 0)) {
+ EXT4_ERROR_INODE(inode, "bad extent address "
+ "iblock: %d, depth: %d pblock %lld",
+ iblock, depth, path[depth].p_block);
err = -EIO;
goto out2;
}
@@ -3258,7 +3364,7 @@ int ext4_ext_get_blocks(handle_t *handle, struct inode *inode,
*/
ee_len = ext4_ext_get_actual_len(ex);
/* if found extent covers block, simply return it */
- if (iblock >= ee_block && iblock < ee_block + ee_len) {
+ if (in_range(iblock, ee_block, ee_len)) {
newblock = iblock - ee_block + ee_start;
/* number of remaining blocks in the extent */
allocated = ee_len - (iblock - ee_block);
@@ -3350,21 +3456,35 @@ int ext4_ext_get_blocks(handle_t *handle, struct inode *inode,
if (flags & EXT4_GET_BLOCKS_UNINIT_EXT){
ext4_ext_mark_uninitialized(&newex);
/*
- * io_end structure was created for every async
- * direct IO write to the middle of the file.
- * To avoid unecessary convertion for every aio dio rewrite
- * to the mid of file, here we flag the IO that is really
- * need the convertion.
+ * io_end structure was created for every IO write to an
+ * uninitialized extent. To avoid unecessary conversion,
+ * here we flag the IO that really needs the conversion.
* For non asycn direct IO case, flag the inode state
* that we need to perform convertion when IO is done.
*/
- if (flags == EXT4_GET_BLOCKS_DIO_CREATE_EXT) {
+ if ((flags & EXT4_GET_BLOCKS_PRE_IO)) {
if (io)
- io->flag = DIO_AIO_UNWRITTEN;
+ io->flag = EXT4_IO_UNWRITTEN;
else
- EXT4_I(inode)->i_state |=
- EXT4_STATE_DIO_UNWRITTEN;;
+ ext4_set_inode_state(inode,
+ EXT4_STATE_DIO_UNWRITTEN);
+ }
+ if (ext4_should_dioread_nolock(inode))
+ set_buffer_uninit(bh_result);
+ }
+
+ if (unlikely(EXT4_I(inode)->i_flags & EXT4_EOFBLOCKS_FL)) {
+ if (unlikely(!eh->eh_entries)) {
+ EXT4_ERROR_INODE(inode,
+ "eh->eh_entries == 0 ee_block %d",
+ ex->ee_block);
+ err = -EIO;
+ goto out2;
}
+ last_ex = EXT_LAST_EXTENT(eh);
+ if (iblock + ar.len > le32_to_cpu(last_ex->ee_block)
+ + ext4_ext_get_actual_len(last_ex))
+ EXT4_I(inode)->i_flags &= ~EXT4_EOFBLOCKS_FL;
}
err = ext4_ext_insert_extent(handle, inode, path, &newex, flags);
if (err) {
@@ -3499,6 +3619,13 @@ static void ext4_falloc_update_inode(struct inode *inode,
i_size_write(inode, new_size);
if (new_size > EXT4_I(inode)->i_disksize)
ext4_update_i_disksize(inode, new_size);
+ } else {
+ /*
+ * Mark that we allocate beyond EOF so the subsequent truncate
+ * can proceed even if the new size is the same as i_size.
+ */
+ if (new_size > i_size_read(inode))
+ EXT4_I(inode)->i_flags |= EXT4_EOFBLOCKS_FL;
}
}
@@ -3603,7 +3730,7 @@ retry:
* Returns 0 on success.
*/
int ext4_convert_unwritten_extents(struct inode *inode, loff_t offset,
- loff_t len)
+ ssize_t len)
{
handle_t *handle;
ext4_lblk_t block;
@@ -3635,7 +3762,7 @@ int ext4_convert_unwritten_extents(struct inode *inode, loff_t offset,
map_bh.b_state = 0;
ret = ext4_get_blocks(handle, inode, block,
max_blocks, &map_bh,
- EXT4_GET_BLOCKS_DIO_CONVERT_EXT);
+ EXT4_GET_BLOCKS_IO_CONVERT_EXT);
if (ret <= 0) {
WARN_ON(ret <= 0);
printk(KERN_ERR "%s: ext4_ext_get_blocks "
@@ -3739,7 +3866,7 @@ static int ext4_xattr_fiemap(struct inode *inode,
int error = 0;
/* in-inode? */
- if (EXT4_I(inode)->i_state & EXT4_STATE_XATTR) {
+ if (ext4_test_inode_state(inode, EXT4_STATE_XATTR)) {
struct ext4_iloc iloc;
int offset; /* offset of xattr in inode */
@@ -3767,7 +3894,6 @@ int ext4_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
__u64 start, __u64 len)
{
ext4_lblk_t start_blk;
- ext4_lblk_t len_blks;
int error = 0;
/* fallback to generic here if not in extents fmt */
@@ -3781,8 +3907,14 @@ int ext4_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
if (fieinfo->fi_flags & FIEMAP_FLAG_XATTR) {
error = ext4_xattr_fiemap(inode, fieinfo);
} else {
+ ext4_lblk_t len_blks;
+ __u64 last_blk;
+
start_blk = start >> inode->i_sb->s_blocksize_bits;
- len_blks = len >> inode->i_sb->s_blocksize_bits;
+ last_blk = (start + len - 1) >> inode->i_sb->s_blocksize_bits;
+ if (last_blk >= EXT_MAX_BLOCK)
+ last_blk = EXT_MAX_BLOCK-1;
+ len_blks = ((ext4_lblk_t) last_blk) - start_blk + 1;
/*
* Walk the extent tree gathering extent information.
diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index 9630583cef28..503a48927402 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -35,9 +35,9 @@
*/
static int ext4_release_file(struct inode *inode, struct file *filp)
{
- if (EXT4_I(inode)->i_state & EXT4_STATE_DA_ALLOC_CLOSE) {
+ if (ext4_test_inode_state(inode, EXT4_STATE_DA_ALLOC_CLOSE)) {
ext4_alloc_da_blocks(inode);
- EXT4_I(inode)->i_state &= ~EXT4_STATE_DA_ALLOC_CLOSE;
+ ext4_clear_inode_state(inode, EXT4_STATE_DA_ALLOC_CLOSE);
}
/* if we are the last writer on the inode, drop the block reservation */
if ((filp->f_mode & FMODE_WRITE) &&
@@ -116,11 +116,9 @@ static int ext4_file_open(struct inode * inode, struct file * filp)
* devices or filesystem images.
*/
memset(buf, 0, sizeof(buf));
- path.mnt = mnt->mnt_parent;
- path.dentry = mnt->mnt_mountpoint;
- path_get(&path);
+ path.mnt = mnt;
+ path.dentry = mnt->mnt_root;
cp = d_path(&path, buf, sizeof(buf));
- path_put(&path);
if (!IS_ERR(cp)) {
memcpy(sbi->s_es->s_last_mounted, cp,
sizeof(sbi->s_es->s_last_mounted));
diff --git a/fs/ext4/fsync.c b/fs/ext4/fsync.c
index 98bd140aad01..0d0c3239c1cd 100644
--- a/fs/ext4/fsync.c
+++ b/fs/ext4/fsync.c
@@ -63,7 +63,7 @@ int ext4_sync_file(struct file *file, struct dentry *dentry, int datasync)
if (inode->i_sb->s_flags & MS_RDONLY)
return 0;
- ret = flush_aio_dio_completed_IO(inode);
+ ret = flush_completed_IO(inode);
if (ret < 0)
return ret;
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index f3624ead4f6c..004c9da9e5c6 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -76,8 +76,7 @@ unsigned ext4_init_inode_bitmap(struct super_block *sb, struct buffer_head *bh,
/* If checksum is bad mark all blocks and inodes use to prevent
* allocation, essentially implementing a per-group read-only flag. */
if (!ext4_group_desc_csum_verify(sbi, block_group, gdp)) {
- ext4_error(sb, __func__, "Checksum bad for group %u",
- block_group);
+ ext4_error(sb, "Checksum bad for group %u", block_group);
ext4_free_blks_set(sb, gdp, 0);
ext4_free_inodes_set(sb, gdp, 0);
ext4_itable_unused_set(sb, gdp, 0);
@@ -111,8 +110,7 @@ ext4_read_inode_bitmap(struct super_block *sb, ext4_group_t block_group)
bitmap_blk = ext4_inode_bitmap(sb, desc);
bh = sb_getblk(sb, bitmap_blk);
if (unlikely(!bh)) {
- ext4_error(sb, __func__,
- "Cannot read inode bitmap - "
+ ext4_error(sb, "Cannot read inode bitmap - "
"block_group = %u, inode_bitmap = %llu",
block_group, bitmap_blk);
return NULL;
@@ -153,8 +151,7 @@ ext4_read_inode_bitmap(struct super_block *sb, ext4_group_t block_group)
set_bitmap_uptodate(bh);
if (bh_submit_read(bh) < 0) {
put_bh(bh);
- ext4_error(sb, __func__,
- "Cannot read inode bitmap - "
+ ext4_error(sb, "Cannot read inode bitmap - "
"block_group = %u, inode_bitmap = %llu",
block_group, bitmap_blk);
return NULL;
@@ -229,8 +226,7 @@ void ext4_free_inode(handle_t *handle, struct inode *inode)
es = EXT4_SB(sb)->s_es;
if (ino < EXT4_FIRST_INO(sb) || ino > le32_to_cpu(es->s_inodes_count)) {
- ext4_error(sb, "ext4_free_inode",
- "reserved or nonexistent inode %lu", ino);
+ ext4_error(sb, "reserved or nonexistent inode %lu", ino);
goto error_return;
}
block_group = (ino - 1) / EXT4_INODES_PER_GROUP(sb);
@@ -248,8 +244,7 @@ void ext4_free_inode(handle_t *handle, struct inode *inode)
cleared = ext4_clear_bit_atomic(ext4_group_lock_ptr(sb, block_group),
bit, bitmap_bh->b_data);
if (!cleared)
- ext4_error(sb, "ext4_free_inode",
- "bit already cleared for inode %lu", ino);
+ ext4_error(sb, "bit already cleared for inode %lu", ino);
else {
gdp = ext4_get_group_desc(sb, block_group, &bh2);
@@ -736,8 +731,7 @@ static int ext4_claim_inode(struct super_block *sb,
if ((group == 0 && ino < EXT4_FIRST_INO(sb)) ||
ino > EXT4_INODES_PER_GROUP(sb)) {
ext4_unlock_group(sb, group);
- ext4_error(sb, __func__,
- "reserved inode or inode > inodes count - "
+ ext4_error(sb, "reserved inode or inode > inodes count - "
"block_group = %u, inode=%lu", group,
ino + group * EXT4_INODES_PER_GROUP(sb));
return 1;
@@ -904,7 +898,7 @@ repeat_in_this_group:
BUFFER_TRACE(inode_bitmap_bh,
"call ext4_handle_dirty_metadata");
err = ext4_handle_dirty_metadata(handle,
- inode,
+ NULL,
inode_bitmap_bh);
if (err)
goto fail;
@@ -1029,7 +1023,8 @@ got:
inode->i_generation = sbi->s_next_generation++;
spin_unlock(&sbi->s_next_gen_lock);
- ei->i_state = EXT4_STATE_NEW;
+ ei->i_state_flags = 0;
+ ext4_set_inode_state(inode, EXT4_STATE_NEW);
ei->i_extra_isize = EXT4_SB(sb)->s_want_extra_isize;
@@ -1098,8 +1093,7 @@ struct inode *ext4_orphan_get(struct super_block *sb, unsigned long ino)
/* Error cases - e2fsck has already cleaned up for us */
if (ino > max_ino) {
- ext4_warning(sb, __func__,
- "bad orphan ino %lu! e2fsck was run?", ino);
+ ext4_warning(sb, "bad orphan ino %lu! e2fsck was run?", ino);
goto error;
}
@@ -1107,8 +1101,7 @@ struct inode *ext4_orphan_get(struct super_block *sb, unsigned long ino)
bit = (ino - 1) % EXT4_INODES_PER_GROUP(sb);
bitmap_bh = ext4_read_inode_bitmap(sb, block_group);
if (!bitmap_bh) {
- ext4_warning(sb, __func__,
- "inode bitmap error for orphan %lu", ino);
+ ext4_warning(sb, "inode bitmap error for orphan %lu", ino);
goto error;
}
@@ -1140,8 +1133,7 @@ iget_failed:
err = PTR_ERR(inode);
inode = NULL;
bad_orphan:
- ext4_warning(sb, __func__,
- "bad orphan inode %lu! e2fsck was run?", ino);
+ ext4_warning(sb, "bad orphan inode %lu! e2fsck was run?", ino);
printk(KERN_NOTICE "ext4_test_bit(bit=%d, block=%llu) = %d\n",
bit, (unsigned long long)bitmap_bh->b_blocknr,
ext4_test_bit(bit, bitmap_bh->b_data));
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index e11952404e02..f977aade0d1b 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -38,6 +38,7 @@
#include <linux/uio.h>
#include <linux/bio.h>
#include <linux/workqueue.h>
+#include <linux/kernel.h>
#include "ext4_jbd2.h"
#include "xattr.h"
@@ -194,7 +195,7 @@ void ext4_delete_inode(struct inode *inode)
inode->i_size = 0;
err = ext4_mark_inode_dirty(handle, inode);
if (err) {
- ext4_warning(inode->i_sb, __func__,
+ ext4_warning(inode->i_sb,
"couldn't mark inode dirty (err %d)", err);
goto stop_handle;
}
@@ -212,7 +213,7 @@ void ext4_delete_inode(struct inode *inode)
if (err > 0)
err = ext4_journal_restart(handle, 3);
if (err != 0) {
- ext4_warning(inode->i_sb, __func__,
+ ext4_warning(inode->i_sb,
"couldn't extend journal (err %d)", err);
stop_handle:
ext4_journal_stop(handle);
@@ -323,8 +324,7 @@ static int ext4_block_to_path(struct inode *inode,
offsets[n++] = i_block & (ptrs - 1);
final = ptrs;
} else {
- ext4_warning(inode->i_sb, "ext4_block_to_path",
- "block %lu > max in inode %lu",
+ ext4_warning(inode->i_sb, "block %lu > max in inode %lu",
i_block + direct_blocks +
indirect_blocks + double_blocks, inode->i_ino);
}
@@ -344,7 +344,7 @@ static int __ext4_check_blockref(const char *function, struct inode *inode,
if (blk &&
unlikely(!ext4_data_block_valid(EXT4_SB(inode->i_sb),
blk, 1))) {
- ext4_error(inode->i_sb, function,
+ __ext4_error(inode->i_sb, function,
"invalid block reference %u "
"in inode #%lu", blk, inode->i_ino);
return -EIO;
@@ -607,7 +607,14 @@ static int ext4_alloc_blocks(handle_t *handle, struct inode *inode,
if (*err)
goto failed_out;
- BUG_ON(current_block + count > EXT4_MAX_BLOCK_FILE_PHYS);
+ if (unlikely(current_block + count > EXT4_MAX_BLOCK_FILE_PHYS)) {
+ EXT4_ERROR_INODE(inode,
+ "current_block %llu + count %lu > %d!",
+ current_block, count,
+ EXT4_MAX_BLOCK_FILE_PHYS);
+ *err = -EIO;
+ goto failed_out;
+ }
target -= count;
/* allocate blocks for indirect blocks */
@@ -643,7 +650,14 @@ static int ext4_alloc_blocks(handle_t *handle, struct inode *inode,
ar.flags = EXT4_MB_HINT_DATA;
current_block = ext4_mb_new_blocks(handle, &ar, err);
- BUG_ON(current_block + ar.len > EXT4_MAX_BLOCK_FILE_PHYS);
+ if (unlikely(current_block + ar.len > EXT4_MAX_BLOCK_FILE_PHYS)) {
+ EXT4_ERROR_INODE(inode,
+ "current_block %llu + ar.len %d > %d!",
+ current_block, ar.len,
+ EXT4_MAX_BLOCK_FILE_PHYS);
+ *err = -EIO;
+ goto failed_out;
+ }
if (*err && (target == blks)) {
/*
@@ -1061,6 +1075,7 @@ void ext4_da_update_reserve_space(struct inode *inode,
int mdb_free = 0, allocated_meta_blocks = 0;
spin_lock(&ei->i_block_reservation_lock);
+ trace_ext4_da_update_reserve_space(inode, used);
if (unlikely(used > ei->i_reserved_data_blocks)) {
ext4_msg(inode->i_sb, KERN_NOTICE, "%s: ino %lu, used %d "
"with only %d reserved data blocks\n",
@@ -1124,7 +1139,7 @@ static int check_block_validity(struct inode *inode, const char *msg,
sector_t logical, sector_t phys, int len)
{
if (!ext4_data_block_valid(EXT4_SB(inode->i_sb), phys, len)) {
- ext4_error(inode->i_sb, msg,
+ __ext4_error(inode->i_sb, msg,
"inode #%lu logical block %llu mapped to %llu "
"(size %d)", inode->i_ino,
(unsigned long long) logical,
@@ -1306,7 +1321,7 @@ int ext4_get_blocks(handle_t *handle, struct inode *inode, sector_t block,
* i_data's format changing. Force the migrate
* to fail by clearing migrate flags
*/
- EXT4_I(inode)->i_state &= ~EXT4_STATE_EXT_MIGRATE;
+ ext4_clear_inode_state(inode, EXT4_STATE_EXT_MIGRATE);
}
/*
@@ -1534,6 +1549,8 @@ static void ext4_truncate_failed_write(struct inode *inode)
ext4_truncate(inode);
}
+static int ext4_get_block_write(struct inode *inode, sector_t iblock,
+ struct buffer_head *bh_result, int create);
static int ext4_write_begin(struct file *file, struct address_space *mapping,
loff_t pos, unsigned len, unsigned flags,
struct page **pagep, void **fsdata)
@@ -1575,8 +1592,12 @@ retry:
}
*pagep = page;
- ret = block_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
- ext4_get_block);
+ if (ext4_should_dioread_nolock(inode))
+ ret = block_write_begin(file, mapping, pos, len, flags, pagep,
+ fsdata, ext4_get_block_write);
+ else
+ ret = block_write_begin(file, mapping, pos, len, flags, pagep,
+ fsdata, ext4_get_block);
if (!ret && ext4_should_journal_data(inode)) {
ret = walk_page_buffers(handle, page_buffers(page),
@@ -1793,7 +1814,7 @@ static int ext4_journalled_write_end(struct file *file,
new_i_size = pos + copied;
if (new_i_size > inode->i_size)
i_size_write(inode, pos+copied);
- EXT4_I(inode)->i_state |= EXT4_STATE_JDATA;
+ ext4_set_inode_state(inode, EXT4_STATE_JDATA);
if (new_i_size > EXT4_I(inode)->i_disksize) {
ext4_update_i_disksize(inode, new_i_size);
ret2 = ext4_mark_inode_dirty(handle, inode);
@@ -1846,6 +1867,7 @@ repeat:
spin_lock(&ei->i_block_reservation_lock);
md_reserved = ei->i_reserved_meta_blocks;
md_needed = ext4_calc_metadata_amount(inode, lblock);
+ trace_ext4_da_reserve_space(inode, md_needed);
spin_unlock(&ei->i_block_reservation_lock);
/*
@@ -2091,6 +2113,8 @@ static void mpage_put_bnr_to_bhs(struct mpage_da_data *mpd, sector_t logical,
} else if (buffer_mapped(bh))
BUG_ON(bh->b_blocknr != pblock);
+ if (buffer_uninit(exbh))
+ set_buffer_uninit(bh);
cur_logical++;
pblock++;
} while ((bh = bh->b_this_page) != head);
@@ -2133,17 +2157,16 @@ static void ext4_da_block_invalidatepages(struct mpage_da_data *mpd,
break;
for (i = 0; i < nr_pages; i++) {
struct page *page = pvec.pages[i];
- index = page->index;
- if (index > end)
+ if (page->index > end)
break;
- index++;
-
BUG_ON(!PageLocked(page));
BUG_ON(PageWriteback(page));
block_invalidatepage(page, 0);
ClearPageUptodate(page);
unlock_page(page);
}
+ index = pvec.pages[nr_pages - 1]->index + 1;
+ pagevec_release(&pvec);
}
return;
}
@@ -2220,6 +2243,8 @@ static int mpage_da_map_blocks(struct mpage_da_data *mpd)
*/
new.b_state = 0;
get_blocks_flags = EXT4_GET_BLOCKS_CREATE;
+ if (ext4_should_dioread_nolock(mpd->inode))
+ get_blocks_flags |= EXT4_GET_BLOCKS_IO_CREATE_EXT;
if (mpd->b_state & (1 << BH_Delay))
get_blocks_flags |= EXT4_GET_BLOCKS_DELALLOC_RESERVE;
@@ -2630,11 +2655,14 @@ static int __ext4_journalled_writepage(struct page *page,
ret = err;
walk_page_buffers(handle, page_bufs, 0, len, NULL, bput_one);
- EXT4_I(inode)->i_state |= EXT4_STATE_JDATA;
+ ext4_set_inode_state(inode, EXT4_STATE_JDATA);
out:
return ret;
}
+static int ext4_set_bh_endio(struct buffer_head *bh, struct inode *inode);
+static void ext4_end_io_buffer_write(struct buffer_head *bh, int uptodate);
+
/*
* Note that we don't need to start a transaction unless we're journaling data
* because we should have holes filled from ext4_page_mkwrite(). We even don't
@@ -2682,7 +2710,7 @@ static int ext4_writepage(struct page *page,
int ret = 0;
loff_t size;
unsigned int len;
- struct buffer_head *page_bufs;
+ struct buffer_head *page_bufs = NULL;
struct inode *inode = page->mapping->host;
trace_ext4_writepage(inode, page);
@@ -2758,7 +2786,11 @@ static int ext4_writepage(struct page *page,
if (test_opt(inode->i_sb, NOBH) && ext4_should_writeback_data(inode))
ret = nobh_writepage(page, noalloc_get_block_write, wbc);
- else
+ else if (page_bufs && buffer_uninit(page_bufs)) {
+ ext4_set_bh_endio(page_bufs, inode);
+ ret = block_write_full_page_endio(page, noalloc_get_block_write,
+ wbc, ext4_end_io_buffer_write);
+ } else
ret = block_write_full_page(page, noalloc_get_block_write,
wbc);
@@ -3301,7 +3333,8 @@ static sector_t ext4_bmap(struct address_space *mapping, sector_t block)
filemap_write_and_wait(mapping);
}
- if (EXT4_JOURNAL(inode) && EXT4_I(inode)->i_state & EXT4_STATE_JDATA) {
+ if (EXT4_JOURNAL(inode) &&
+ ext4_test_inode_state(inode, EXT4_STATE_JDATA)) {
/*
* This is a REALLY heavyweight approach, but the use of
* bmap on dirty files is expected to be extremely rare:
@@ -3320,7 +3353,7 @@ static sector_t ext4_bmap(struct address_space *mapping, sector_t block)
* everything they get.
*/
- EXT4_I(inode)->i_state &= ~EXT4_STATE_JDATA;
+ ext4_clear_inode_state(inode, EXT4_STATE_JDATA);
journal = EXT4_JOURNAL(inode);
jbd2_journal_lock_updates(journal);
err = jbd2_journal_flush(journal);
@@ -3345,11 +3378,45 @@ ext4_readpages(struct file *file, struct address_space *mapping,
return mpage_readpages(mapping, pages, nr_pages, ext4_get_block);
}
+static void ext4_free_io_end(ext4_io_end_t *io)
+{
+ BUG_ON(!io);
+ if (io->page)
+ put_page(io->page);
+ iput(io->inode);
+ kfree(io);
+}
+
+static void ext4_invalidatepage_free_endio(struct page *page, unsigned long offset)
+{
+ struct buffer_head *head, *bh;
+ unsigned int curr_off = 0;
+
+ if (!page_has_buffers(page))
+ return;
+ head = bh = page_buffers(page);
+ do {
+ if (offset <= curr_off && test_clear_buffer_uninit(bh)
+ && bh->b_private) {
+ ext4_free_io_end(bh->b_private);
+ bh->b_private = NULL;
+ bh->b_end_io = NULL;
+ }
+ curr_off = curr_off + bh->b_size;
+ bh = bh->b_this_page;
+ } while (bh != head);
+}
+
static void ext4_invalidatepage(struct page *page, unsigned long offset)
{
journal_t *journal = EXT4_JOURNAL(page->mapping->host);
/*
+ * free any io_end structure allocated for buffers to be discarded
+ */
+ if (ext4_should_dioread_nolock(page->mapping->host))
+ ext4_invalidatepage_free_endio(page, offset);
+ /*
* If it's a full truncate we just forget about the pending dirtying
*/
if (offset == 0)
@@ -3420,7 +3487,14 @@ static ssize_t ext4_ind_direct_IO(int rw, struct kiocb *iocb,
}
retry:
- ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov,
+ if (rw == READ && ext4_should_dioread_nolock(inode))
+ ret = blockdev_direct_IO_no_locking(rw, iocb, inode,
+ inode->i_sb->s_bdev, iov,
+ offset, nr_segs,
+ ext4_get_block, NULL);
+ else
+ ret = blockdev_direct_IO(rw, iocb, inode,
+ inode->i_sb->s_bdev, iov,
offset, nr_segs,
ext4_get_block, NULL);
if (ret == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries))
@@ -3436,6 +3510,9 @@ retry:
* but cannot extend i_size. Bail out and pretend
* the write failed... */
ret = PTR_ERR(handle);
+ if (inode->i_nlink)
+ ext4_orphan_del(NULL, inode);
+
goto out;
}
if (inode->i_nlink)
@@ -3463,75 +3540,63 @@ out:
return ret;
}
-static int ext4_get_block_dio_write(struct inode *inode, sector_t iblock,
+static int ext4_get_block_write(struct inode *inode, sector_t iblock,
struct buffer_head *bh_result, int create)
{
- handle_t *handle = NULL;
+ handle_t *handle = ext4_journal_current_handle();
int ret = 0;
unsigned max_blocks = bh_result->b_size >> inode->i_blkbits;
int dio_credits;
+ int started = 0;
- ext4_debug("ext4_get_block_dio_write: inode %lu, create flag %d\n",
+ ext4_debug("ext4_get_block_write: inode %lu, create flag %d\n",
inode->i_ino, create);
/*
- * DIO VFS code passes create = 0 flag for write to
- * the middle of file. It does this to avoid block
- * allocation for holes, to prevent expose stale data
- * out when there is parallel buffered read (which does
- * not hold the i_mutex lock) while direct IO write has
- * not completed. DIO request on holes finally falls back
- * to buffered IO for this reason.
- *
- * For ext4 extent based file, since we support fallocate,
- * new allocated extent as uninitialized, for holes, we
- * could fallocate blocks for holes, thus parallel
- * buffered IO read will zero out the page when read on
- * a hole while parallel DIO write to the hole has not completed.
- *
- * when we come here, we know it's a direct IO write to
- * to the middle of file (<i_size)
- * so it's safe to override the create flag from VFS.
+ * ext4_get_block in prepare for a DIO write or buffer write.
+ * We allocate an uinitialized extent if blocks haven't been allocated.
+ * The extent will be converted to initialized after IO complete.
*/
- create = EXT4_GET_BLOCKS_DIO_CREATE_EXT;
+ create = EXT4_GET_BLOCKS_IO_CREATE_EXT;
- if (max_blocks > DIO_MAX_BLOCKS)
- max_blocks = DIO_MAX_BLOCKS;
- dio_credits = ext4_chunk_trans_blocks(inode, max_blocks);
- handle = ext4_journal_start(inode, dio_credits);
- if (IS_ERR(handle)) {
- ret = PTR_ERR(handle);
- goto out;
+ if (!handle) {
+ if (max_blocks > DIO_MAX_BLOCKS)
+ max_blocks = DIO_MAX_BLOCKS;
+ dio_credits = ext4_chunk_trans_blocks(inode, max_blocks);
+ handle = ext4_journal_start(inode, dio_credits);
+ if (IS_ERR(handle)) {
+ ret = PTR_ERR(handle);
+ goto out;
+ }
+ started = 1;
}
+
ret = ext4_get_blocks(handle, inode, iblock, max_blocks, bh_result,
create);
if (ret > 0) {
bh_result->b_size = (ret << inode->i_blkbits);
ret = 0;
}
- ext4_journal_stop(handle);
+ if (started)
+ ext4_journal_stop(handle);
out:
return ret;
}
-static void ext4_free_io_end(ext4_io_end_t *io)
-{
- BUG_ON(!io);
- iput(io->inode);
- kfree(io);
-}
-static void dump_aio_dio_list(struct inode * inode)
+static void dump_completed_IO(struct inode * inode)
{
#ifdef EXT4_DEBUG
struct list_head *cur, *before, *after;
ext4_io_end_t *io, *io0, *io1;
+ unsigned long flags;
- if (list_empty(&EXT4_I(inode)->i_aio_dio_complete_list)){
- ext4_debug("inode %lu aio dio list is empty\n", inode->i_ino);
+ if (list_empty(&EXT4_I(inode)->i_completed_io_list)){
+ ext4_debug("inode %lu completed_io list is empty\n", inode->i_ino);
return;
}
- ext4_debug("Dump inode %lu aio_dio_completed_IO list \n", inode->i_ino);
- list_for_each_entry(io, &EXT4_I(inode)->i_aio_dio_complete_list, list){
+ ext4_debug("Dump inode %lu completed_io list \n", inode->i_ino);
+ spin_lock_irqsave(&EXT4_I(inode)->i_completed_io_lock, flags);
+ list_for_each_entry(io, &EXT4_I(inode)->i_completed_io_list, list){
cur = &io->list;
before = cur->prev;
io0 = container_of(before, ext4_io_end_t, list);
@@ -3541,32 +3606,31 @@ static void dump_aio_dio_list(struct inode * inode)
ext4_debug("io 0x%p from inode %lu,prev 0x%p,next 0x%p\n",
io, inode->i_ino, io0, io1);
}
+ spin_unlock_irqrestore(&EXT4_I(inode)->i_completed_io_lock, flags);
#endif
}
/*
* check a range of space and convert unwritten extents to written.
*/
-static int ext4_end_aio_dio_nolock(ext4_io_end_t *io)
+static int ext4_end_io_nolock(ext4_io_end_t *io)
{
struct inode *inode = io->inode;
loff_t offset = io->offset;
- size_t size = io->size;
+ ssize_t size = io->size;
int ret = 0;
- ext4_debug("end_aio_dio_onlock: io 0x%p from inode %lu,list->next 0x%p,"
+ ext4_debug("ext4_end_io_nolock: io 0x%p from inode %lu,list->next 0x%p,"
"list->prev 0x%p\n",
io, inode->i_ino, io->list.next, io->list.prev);
if (list_empty(&io->list))
return ret;
- if (io->flag != DIO_AIO_UNWRITTEN)
+ if (io->flag != EXT4_IO_UNWRITTEN)
return ret;
- if (offset + size <= i_size_read(inode))
- ret = ext4_convert_unwritten_extents(inode, offset, size);
-
+ ret = ext4_convert_unwritten_extents(inode, offset, size);
if (ret < 0) {
printk(KERN_EMERG "%s: failed to convert unwritten"
"extents to written extents, error is %d"
@@ -3579,50 +3643,64 @@ static int ext4_end_aio_dio_nolock(ext4_io_end_t *io)
io->flag = 0;
return ret;
}
+
/*
* work on completed aio dio IO, to convert unwritten extents to extents
*/
-static void ext4_end_aio_dio_work(struct work_struct *work)
+static void ext4_end_io_work(struct work_struct *work)
{
- ext4_io_end_t *io = container_of(work, ext4_io_end_t, work);
- struct inode *inode = io->inode;
- int ret = 0;
+ ext4_io_end_t *io = container_of(work, ext4_io_end_t, work);
+ struct inode *inode = io->inode;
+ struct ext4_inode_info *ei = EXT4_I(inode);
+ unsigned long flags;
+ int ret;
mutex_lock(&inode->i_mutex);
- ret = ext4_end_aio_dio_nolock(io);
- if (ret >= 0) {
- if (!list_empty(&io->list))
- list_del_init(&io->list);
- ext4_free_io_end(io);
+ ret = ext4_end_io_nolock(io);
+ if (ret < 0) {
+ mutex_unlock(&inode->i_mutex);
+ return;
}
+
+ spin_lock_irqsave(&ei->i_completed_io_lock, flags);
+ if (!list_empty(&io->list))
+ list_del_init(&io->list);
+ spin_unlock_irqrestore(&ei->i_completed_io_lock, flags);
mutex_unlock(&inode->i_mutex);
+ ext4_free_io_end(io);
}
+
/*
* This function is called from ext4_sync_file().
*
- * When AIO DIO IO is completed, the work to convert unwritten
- * extents to written is queued on workqueue but may not get immediately
+ * When IO is completed, the work to convert unwritten extents to
+ * written is queued on workqueue but may not get immediately
* scheduled. When fsync is called, we need to ensure the
* conversion is complete before fsync returns.
- * The inode keeps track of a list of completed AIO from DIO path
- * that might needs to do the conversion. This function walks through
- * the list and convert the related unwritten extents to written.
+ * The inode keeps track of a list of pending/completed IO that
+ * might needs to do the conversion. This function walks through
+ * the list and convert the related unwritten extents for completed IO
+ * to written.
+ * The function return the number of pending IOs on success.
*/
-int flush_aio_dio_completed_IO(struct inode *inode)
+int flush_completed_IO(struct inode *inode)
{
ext4_io_end_t *io;
+ struct ext4_inode_info *ei = EXT4_I(inode);
+ unsigned long flags;
int ret = 0;
int ret2 = 0;
- if (list_empty(&EXT4_I(inode)->i_aio_dio_complete_list))
+ if (list_empty(&ei->i_completed_io_list))
return ret;
- dump_aio_dio_list(inode);
- while (!list_empty(&EXT4_I(inode)->i_aio_dio_complete_list)){
- io = list_entry(EXT4_I(inode)->i_aio_dio_complete_list.next,
+ dump_completed_IO(inode);
+ spin_lock_irqsave(&ei->i_completed_io_lock, flags);
+ while (!list_empty(&ei->i_completed_io_list)){
+ io = list_entry(ei->i_completed_io_list.next,
ext4_io_end_t, list);
/*
- * Calling ext4_end_aio_dio_nolock() to convert completed
+ * Calling ext4_end_io_nolock() to convert completed
* IO to written.
*
* When ext4_sync_file() is called, run_queue() may already
@@ -3635,20 +3713,23 @@ int flush_aio_dio_completed_IO(struct inode *inode)
* avoid double converting from both fsync and background work
* queue work.
*/
- ret = ext4_end_aio_dio_nolock(io);
+ spin_unlock_irqrestore(&ei->i_completed_io_lock, flags);
+ ret = ext4_end_io_nolock(io);
+ spin_lock_irqsave(&ei->i_completed_io_lock, flags);
if (ret < 0)
ret2 = ret;
else
list_del_init(&io->list);
}
+ spin_unlock_irqrestore(&ei->i_completed_io_lock, flags);
return (ret2 < 0) ? ret2 : 0;
}
-static ext4_io_end_t *ext4_init_io_end (struct inode *inode)
+static ext4_io_end_t *ext4_init_io_end (struct inode *inode, gfp_t flags)
{
ext4_io_end_t *io = NULL;
- io = kmalloc(sizeof(*io), GFP_NOFS);
+ io = kmalloc(sizeof(*io), flags);
if (io) {
igrab(inode);
@@ -3656,8 +3737,8 @@ static ext4_io_end_t *ext4_init_io_end (struct inode *inode)
io->flag = 0;
io->offset = 0;
io->size = 0;
- io->error = 0;
- INIT_WORK(&io->work, ext4_end_aio_dio_work);
+ io->page = NULL;
+ INIT_WORK(&io->work, ext4_end_io_work);
INIT_LIST_HEAD(&io->list);
}
@@ -3669,6 +3750,8 @@ static void ext4_end_io_dio(struct kiocb *iocb, loff_t offset,
{
ext4_io_end_t *io_end = iocb->private;
struct workqueue_struct *wq;
+ unsigned long flags;
+ struct ext4_inode_info *ei;
/* if not async direct IO or dio with 0 bytes write, just return */
if (!io_end || !size)
@@ -3680,7 +3763,7 @@ static void ext4_end_io_dio(struct kiocb *iocb, loff_t offset,
size);
/* if not aio dio with unwritten extents, just free io and return */
- if (io_end->flag != DIO_AIO_UNWRITTEN){
+ if (io_end->flag != EXT4_IO_UNWRITTEN){
ext4_free_io_end(io_end);
iocb->private = NULL;
return;
@@ -3688,16 +3771,85 @@ static void ext4_end_io_dio(struct kiocb *iocb, loff_t offset,
io_end->offset = offset;
io_end->size = size;
+ io_end->flag = EXT4_IO_UNWRITTEN;
wq = EXT4_SB(io_end->inode->i_sb)->dio_unwritten_wq;
/* queue the work to convert unwritten extents to written */
queue_work(wq, &io_end->work);
/* Add the io_end to per-inode completed aio dio list*/
- list_add_tail(&io_end->list,
- &EXT4_I(io_end->inode)->i_aio_dio_complete_list);
+ ei = EXT4_I(io_end->inode);
+ spin_lock_irqsave(&ei->i_completed_io_lock, flags);
+ list_add_tail(&io_end->list, &ei->i_completed_io_list);
+ spin_unlock_irqrestore(&ei->i_completed_io_lock, flags);
iocb->private = NULL;
}
+
+static void ext4_end_io_buffer_write(struct buffer_head *bh, int uptodate)
+{
+ ext4_io_end_t *io_end = bh->b_private;
+ struct workqueue_struct *wq;
+ struct inode *inode;
+ unsigned long flags;
+
+ if (!test_clear_buffer_uninit(bh) || !io_end)
+ goto out;
+
+ if (!(io_end->inode->i_sb->s_flags & MS_ACTIVE)) {
+ printk("sb umounted, discard end_io request for inode %lu\n",
+ io_end->inode->i_ino);
+ ext4_free_io_end(io_end);
+ goto out;
+ }
+
+ io_end->flag = EXT4_IO_UNWRITTEN;
+ inode = io_end->inode;
+
+ /* Add the io_end to per-inode completed io list*/
+ spin_lock_irqsave(&EXT4_I(inode)->i_completed_io_lock, flags);
+ list_add_tail(&io_end->list, &EXT4_I(inode)->i_completed_io_list);
+ spin_unlock_irqrestore(&EXT4_I(inode)->i_completed_io_lock, flags);
+
+ wq = EXT4_SB(inode->i_sb)->dio_unwritten_wq;
+ /* queue the work to convert unwritten extents to written */
+ queue_work(wq, &io_end->work);
+out:
+ bh->b_private = NULL;
+ bh->b_end_io = NULL;
+ clear_buffer_uninit(bh);
+ end_buffer_async_write(bh, uptodate);
+}
+
+static int ext4_set_bh_endio(struct buffer_head *bh, struct inode *inode)
+{
+ ext4_io_end_t *io_end;
+ struct page *page = bh->b_page;
+ loff_t offset = (sector_t)page->index << PAGE_CACHE_SHIFT;
+ size_t size = bh->b_size;
+
+retry:
+ io_end = ext4_init_io_end(inode, GFP_ATOMIC);
+ if (!io_end) {
+ if (printk_ratelimit())
+ printk(KERN_WARNING "%s: allocation fail\n", __func__);
+ schedule();
+ goto retry;
+ }
+ io_end->offset = offset;
+ io_end->size = size;
+ /*
+ * We need to hold a reference to the page to make sure it
+ * doesn't get evicted before ext4_end_io_work() has a chance
+ * to convert the extent from written to unwritten.
+ */
+ io_end->page = page;
+ get_page(io_end->page);
+
+ bh->b_private = io_end;
+ bh->b_end_io = ext4_end_io_buffer_write;
+ return 0;
+}
+
/*
* For ext4 extent files, ext4 will do direct-io write to holes,
* preallocated extents, and those write extend the file, no need to
@@ -3751,7 +3903,7 @@ static ssize_t ext4_ext_direct_IO(int rw, struct kiocb *iocb,
iocb->private = NULL;
EXT4_I(inode)->cur_aio_dio = NULL;
if (!is_sync_kiocb(iocb)) {
- iocb->private = ext4_init_io_end(inode);
+ iocb->private = ext4_init_io_end(inode, GFP_NOFS);
if (!iocb->private)
return -ENOMEM;
/*
@@ -3767,7 +3919,7 @@ static ssize_t ext4_ext_direct_IO(int rw, struct kiocb *iocb,
ret = blockdev_direct_IO(rw, iocb, inode,
inode->i_sb->s_bdev, iov,
offset, nr_segs,
- ext4_get_block_dio_write,
+ ext4_get_block_write,
ext4_end_io_dio);
if (iocb->private)
EXT4_I(inode)->cur_aio_dio = NULL;
@@ -3788,8 +3940,8 @@ static ssize_t ext4_ext_direct_IO(int rw, struct kiocb *iocb,
if (ret != -EIOCBQUEUED && ret <= 0 && iocb->private) {
ext4_free_io_end(iocb->private);
iocb->private = NULL;
- } else if (ret > 0 && (EXT4_I(inode)->i_state &
- EXT4_STATE_DIO_UNWRITTEN)) {
+ } else if (ret > 0 && ext4_test_inode_state(inode,
+ EXT4_STATE_DIO_UNWRITTEN)) {
int err;
/*
* for non AIO case, since the IO is already
@@ -3799,7 +3951,7 @@ static ssize_t ext4_ext_direct_IO(int rw, struct kiocb *iocb,
offset, ret);
if (err < 0)
ret = err;
- EXT4_I(inode)->i_state &= ~EXT4_STATE_DIO_UNWRITTEN;
+ ext4_clear_inode_state(inode, EXT4_STATE_DIO_UNWRITTEN);
}
return ret;
}
@@ -4130,18 +4282,27 @@ no_top:
* We release `count' blocks on disk, but (last - first) may be greater
* than `count' because there can be holes in there.
*/
-static void ext4_clear_blocks(handle_t *handle, struct inode *inode,
- struct buffer_head *bh,
- ext4_fsblk_t block_to_free,
- unsigned long count, __le32 *first,
- __le32 *last)
+static int ext4_clear_blocks(handle_t *handle, struct inode *inode,
+ struct buffer_head *bh,
+ ext4_fsblk_t block_to_free,
+ unsigned long count, __le32 *first,
+ __le32 *last)
{
__le32 *p;
- int flags = EXT4_FREE_BLOCKS_FORGET;
+ int flags = EXT4_FREE_BLOCKS_FORGET | EXT4_FREE_BLOCKS_VALIDATED;
if (S_ISDIR(inode->i_mode) || S_ISLNK(inode->i_mode))
flags |= EXT4_FREE_BLOCKS_METADATA;
+ if (!ext4_data_block_valid(EXT4_SB(inode->i_sb), block_to_free,
+ count)) {
+ ext4_error(inode->i_sb, "inode #%lu: "
+ "attempt to clear blocks %llu len %lu, invalid",
+ inode->i_ino, (unsigned long long) block_to_free,
+ count);
+ return 1;
+ }
+
if (try_to_extend_transaction(handle, inode)) {
if (bh) {
BUFFER_TRACE(bh, "call ext4_handle_dirty_metadata");
@@ -4160,6 +4321,7 @@ static void ext4_clear_blocks(handle_t *handle, struct inode *inode,
*p = 0;
ext4_free_blocks(handle, inode, 0, block_to_free, count, flags);
+ return 0;
}
/**
@@ -4215,9 +4377,10 @@ static void ext4_free_data(handle_t *handle, struct inode *inode,
} else if (nr == block_to_free + count) {
count++;
} else {
- ext4_clear_blocks(handle, inode, this_bh,
- block_to_free,
- count, block_to_free_p, p);
+ if (ext4_clear_blocks(handle, inode, this_bh,
+ block_to_free, count,
+ block_to_free_p, p))
+ break;
block_to_free = nr;
block_to_free_p = p;
count = 1;
@@ -4241,7 +4404,7 @@ static void ext4_free_data(handle_t *handle, struct inode *inode,
if ((EXT4_JOURNAL(inode) == NULL) || bh2jh(this_bh))
ext4_handle_dirty_metadata(handle, inode, this_bh);
else
- ext4_error(inode->i_sb, __func__,
+ ext4_error(inode->i_sb,
"circular indirect block detected, "
"inode=%lu, block=%llu",
inode->i_ino,
@@ -4281,6 +4444,16 @@ static void ext4_free_branches(handle_t *handle, struct inode *inode,
if (!nr)
continue; /* A hole */
+ if (!ext4_data_block_valid(EXT4_SB(inode->i_sb),
+ nr, 1)) {
+ ext4_error(inode->i_sb,
+ "indirect mapped block in inode "
+ "#%lu invalid (level %d, blk #%lu)",
+ inode->i_ino, depth,
+ (unsigned long) nr);
+ break;
+ }
+
/* Go read the buffer for the next level down */
bh = sb_bread(inode->i_sb, nr);
@@ -4289,7 +4462,7 @@ static void ext4_free_branches(handle_t *handle, struct inode *inode,
* (should be rare).
*/
if (!bh) {
- ext4_error(inode->i_sb, "ext4_free_branches",
+ ext4_error(inode->i_sb,
"Read failure, inode=%lu, block=%llu",
inode->i_ino, nr);
continue;
@@ -4433,8 +4606,10 @@ void ext4_truncate(struct inode *inode)
if (!ext4_can_truncate(inode))
return;
+ EXT4_I(inode)->i_flags &= ~EXT4_EOFBLOCKS_FL;
+
if (inode->i_size == 0 && !test_opt(inode->i_sb, NO_AUTO_DA_ALLOC))
- ei->i_state |= EXT4_STATE_DA_ALLOC_CLOSE;
+ ext4_set_inode_state(inode, EXT4_STATE_DA_ALLOC_CLOSE);
if (EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL) {
ext4_ext_truncate(inode);
@@ -4604,9 +4779,8 @@ static int __ext4_get_inode_loc(struct inode *inode,
bh = sb_getblk(sb, block);
if (!bh) {
- ext4_error(sb, "ext4_get_inode_loc", "unable to read "
- "inode block - inode=%lu, block=%llu",
- inode->i_ino, block);
+ ext4_error(sb, "unable to read inode block - "
+ "inode=%lu, block=%llu", inode->i_ino, block);
return -EIO;
}
if (!buffer_uptodate(bh)) {
@@ -4704,9 +4878,8 @@ make_io:
submit_bh(READ_META, bh);
wait_on_buffer(bh);
if (!buffer_uptodate(bh)) {
- ext4_error(sb, __func__,
- "unable to read inode block - inode=%lu, "
- "block=%llu", inode->i_ino, block);
+ ext4_error(sb, "unable to read inode block - inode=%lu,"
+ " block=%llu", inode->i_ino, block);
brelse(bh);
return -EIO;
}
@@ -4720,7 +4893,7 @@ int ext4_get_inode_loc(struct inode *inode, struct ext4_iloc *iloc)
{
/* We have all inode data except xattrs in memory here. */
return __ext4_get_inode_loc(inode, iloc,
- !(EXT4_I(inode)->i_state & EXT4_STATE_XATTR));
+ !ext4_test_inode_state(inode, EXT4_STATE_XATTR));
}
void ext4_set_inode_flags(struct inode *inode)
@@ -4814,7 +4987,7 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
}
inode->i_nlink = le16_to_cpu(raw_inode->i_links_count);
- ei->i_state = 0;
+ ei->i_state_flags = 0;
ei->i_dir_start_lookup = 0;
ei->i_dtime = le32_to_cpu(raw_inode->i_dtime);
/* We now have enough fields to check if the inode was active or not.
@@ -4897,7 +5070,7 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
EXT4_GOOD_OLD_INODE_SIZE +
ei->i_extra_isize;
if (*magic == cpu_to_le32(EXT4_XATTR_MAGIC))
- ei->i_state |= EXT4_STATE_XATTR;
+ ext4_set_inode_state(inode, EXT4_STATE_XATTR);
}
} else
ei->i_extra_isize = 0;
@@ -4917,8 +5090,7 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
ret = 0;
if (ei->i_file_acl &&
!ext4_data_block_valid(EXT4_SB(sb), ei->i_file_acl, 1)) {
- ext4_error(sb, __func__,
- "bad extended attribute block %llu in inode #%lu",
+ ext4_error(sb, "bad extended attribute block %llu inode #%lu",
ei->i_file_acl, inode->i_ino);
ret = -EIO;
goto bad_inode;
@@ -4964,8 +5136,7 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
new_decode_dev(le32_to_cpu(raw_inode->i_block[1])));
} else {
ret = -EIO;
- ext4_error(inode->i_sb, __func__,
- "bogus i_mode (%o) for inode=%lu",
+ ext4_error(inode->i_sb, "bogus i_mode (%o) for inode=%lu",
inode->i_mode, inode->i_ino);
goto bad_inode;
}
@@ -5037,7 +5208,7 @@ static int ext4_do_update_inode(handle_t *handle,
/* For fields not not tracking in the in-memory inode,
* initialise them to zero for new inodes. */
- if (ei->i_state & EXT4_STATE_NEW)
+ if (ext4_test_inode_state(inode, EXT4_STATE_NEW))
memset(raw_inode, 0, EXT4_SB(inode->i_sb)->s_inode_size);
ext4_get_inode_flags(ei);
@@ -5101,7 +5272,7 @@ static int ext4_do_update_inode(handle_t *handle,
EXT4_FEATURE_RO_COMPAT_LARGE_FILE);
sb->s_dirt = 1;
ext4_handle_sync(handle);
- err = ext4_handle_dirty_metadata(handle, inode,
+ err = ext4_handle_dirty_metadata(handle, NULL,
EXT4_SB(sb)->s_sbh);
}
}
@@ -5130,10 +5301,10 @@ static int ext4_do_update_inode(handle_t *handle,
}
BUFFER_TRACE(bh, "call ext4_handle_dirty_metadata");
- rc = ext4_handle_dirty_metadata(handle, inode, bh);
+ rc = ext4_handle_dirty_metadata(handle, NULL, bh);
if (!err)
err = rc;
- ei->i_state &= ~EXT4_STATE_NEW;
+ ext4_clear_inode_state(inode, EXT4_STATE_NEW);
ext4_update_inode_fsync_trans(handle, inode, 0);
out_brelse:
@@ -5177,7 +5348,7 @@ out_brelse:
* `stuff()' is running, and the new i_size will be lost. Plus the inode
* will no longer be on the superblock's dirty inode list.
*/
-int ext4_write_inode(struct inode *inode, int wait)
+int ext4_write_inode(struct inode *inode, struct writeback_control *wbc)
{
int err;
@@ -5191,7 +5362,7 @@ int ext4_write_inode(struct inode *inode, int wait)
return -EIO;
}
- if (!wait)
+ if (wbc->sync_mode != WB_SYNC_ALL)
return 0;
err = ext4_force_commit(inode->i_sb);
@@ -5201,13 +5372,11 @@ int ext4_write_inode(struct inode *inode, int wait)
err = ext4_get_inode_loc(inode, &iloc);
if (err)
return err;
- if (wait)
+ if (wbc->sync_mode == WB_SYNC_ALL)
sync_dirty_buffer(iloc.bh);
if (buffer_req(iloc.bh) && !buffer_uptodate(iloc.bh)) {
- ext4_error(inode->i_sb, __func__,
- "IO error syncing inode, "
- "inode=%lu, block=%llu",
- inode->i_ino,
+ ext4_error(inode->i_sb, "IO error syncing inode, "
+ "inode=%lu, block=%llu", inode->i_ino,
(unsigned long long)iloc.bh->b_blocknr);
err = -EIO;
}
@@ -5288,7 +5457,9 @@ int ext4_setattr(struct dentry *dentry, struct iattr *attr)
}
if (S_ISREG(inode->i_mode) &&
- attr->ia_valid & ATTR_SIZE && attr->ia_size < inode->i_size) {
+ attr->ia_valid & ATTR_SIZE &&
+ (attr->ia_size < inode->i_size ||
+ (EXT4_I(inode)->i_flags & EXT4_EOFBLOCKS_FL))) {
handle_t *handle;
handle = ext4_journal_start(inode, 3);
@@ -5319,6 +5490,9 @@ int ext4_setattr(struct dentry *dentry, struct iattr *attr)
goto err_out;
}
}
+ /* ext4_truncate will clear the flag */
+ if ((EXT4_I(inode)->i_flags & EXT4_EOFBLOCKS_FL))
+ ext4_truncate(inode);
}
rc = inode_setattr(inode, attr);
@@ -5557,8 +5731,8 @@ static int ext4_expand_extra_isize(struct inode *inode,
entry = IFIRST(header);
/* No extended attributes present */
- if (!(EXT4_I(inode)->i_state & EXT4_STATE_XATTR) ||
- header->h_magic != cpu_to_le32(EXT4_XATTR_MAGIC)) {
+ if (!ext4_test_inode_state(inode, EXT4_STATE_XATTR) ||
+ header->h_magic != cpu_to_le32(EXT4_XATTR_MAGIC)) {
memset((void *)raw_inode + EXT4_GOOD_OLD_INODE_SIZE, 0,
new_extra_isize);
EXT4_I(inode)->i_extra_isize = new_extra_isize;
@@ -5602,7 +5776,7 @@ int ext4_mark_inode_dirty(handle_t *handle, struct inode *inode)
err = ext4_reserve_inode_write(handle, inode, &iloc);
if (ext4_handle_valid(handle) &&
EXT4_I(inode)->i_extra_isize < sbi->s_want_extra_isize &&
- !(EXT4_I(inode)->i_state & EXT4_STATE_NO_EXPAND)) {
+ !ext4_test_inode_state(inode, EXT4_STATE_NO_EXPAND)) {
/*
* We need extra buffer credits since we may write into EA block
* with this same handle. If journal_extend fails, then it will
@@ -5616,10 +5790,11 @@ int ext4_mark_inode_dirty(handle_t *handle, struct inode *inode)
sbi->s_want_extra_isize,
iloc, handle);
if (ret) {
- EXT4_I(inode)->i_state |= EXT4_STATE_NO_EXPAND;
+ ext4_set_inode_state(inode,
+ EXT4_STATE_NO_EXPAND);
if (mnt_count !=
le16_to_cpu(sbi->s_es->s_mnt_count)) {
- ext4_warning(inode->i_sb, __func__,
+ ext4_warning(inode->i_sb,
"Unable to expand inode %lu. Delete"
" some EAs or run e2fsck.",
inode->i_ino);
@@ -5683,7 +5858,7 @@ static int ext4_pin_inode(handle_t *handle, struct inode *inode)
err = jbd2_journal_get_write_access(handle, iloc.bh);
if (!err)
err = ext4_handle_dirty_metadata(handle,
- inode,
+ NULL,
iloc.bh);
brelse(iloc.bh);
}
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index b63d193126db..016d0249294f 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -92,6 +92,15 @@ long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
flags &= ~EXT4_EXTENTS_FL;
}
+ if (flags & EXT4_EOFBLOCKS_FL) {
+ /* we don't support adding EOFBLOCKS flag */
+ if (!(oldflags & EXT4_EOFBLOCKS_FL)) {
+ err = -EOPNOTSUPP;
+ goto flags_out;
+ }
+ } else if (oldflags & EXT4_EOFBLOCKS_FL)
+ ext4_truncate(inode);
+
handle = ext4_journal_start(inode, 1);
if (IS_ERR(handle)) {
err = PTR_ERR(handle);
@@ -249,7 +258,8 @@ setversion_out:
if (me.moved_len > 0)
file_remove_suid(donor_filp);
- if (copy_to_user((struct move_extent *)arg, &me, sizeof(me)))
+ if (copy_to_user((struct move_extent __user *)arg,
+ &me, sizeof(me)))
err = -EFAULT;
mext_out:
fput(donor_filp);
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index d34afad3e137..abb11e328b65 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -441,10 +441,9 @@ static void mb_free_blocks_double(struct inode *inode, struct ext4_buddy *e4b,
for (i = 0; i < count; i++) {
if (!mb_test_bit(first + i, e4b->bd_info->bb_bitmap)) {
ext4_fsblk_t blocknr;
- blocknr = e4b->bd_group * EXT4_BLOCKS_PER_GROUP(sb);
+
+ blocknr = ext4_group_first_block_no(sb, e4b->bd_group);
blocknr += first + i;
- blocknr +=
- le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block);
ext4_grp_locked_error(sb, e4b->bd_group,
__func__, "double-free of inode"
" %lu's block %llu(bit %u in group %u)",
@@ -1255,10 +1254,9 @@ static void mb_free_blocks(struct inode *inode, struct ext4_buddy *e4b,
if (!mb_test_bit(block, EXT4_MB_BITMAP(e4b))) {
ext4_fsblk_t blocknr;
- blocknr = e4b->bd_group * EXT4_BLOCKS_PER_GROUP(sb);
+
+ blocknr = ext4_group_first_block_no(sb, e4b->bd_group);
blocknr += block;
- blocknr +=
- le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block);
ext4_grp_locked_error(sb, e4b->bd_group,
__func__, "double-free of inode"
" %lu's block %llu(bit %u in group %u)",
@@ -1631,7 +1629,6 @@ int ext4_mb_find_by_goal(struct ext4_allocation_context *ac,
int max;
int err;
struct ext4_sb_info *sbi = EXT4_SB(ac->ac_sb);
- struct ext4_super_block *es = sbi->s_es;
struct ext4_free_extent ex;
if (!(ac->ac_flags & EXT4_MB_HINT_TRY_GOAL))
@@ -1648,8 +1645,8 @@ int ext4_mb_find_by_goal(struct ext4_allocation_context *ac,
if (max >= ac->ac_g_ex.fe_len && ac->ac_g_ex.fe_len == sbi->s_stripe) {
ext4_fsblk_t start;
- start = (e4b->bd_group * EXT4_BLOCKS_PER_GROUP(ac->ac_sb)) +
- ex.fe_start + le32_to_cpu(es->s_first_data_block);
+ start = ext4_group_first_block_no(ac->ac_sb, e4b->bd_group) +
+ ex.fe_start;
/* use do_div to get remainder (would be 64-bit modulo) */
if (do_div(start, sbi->s_stripe) == 0) {
ac->ac_found++;
@@ -1803,8 +1800,8 @@ void ext4_mb_scan_aligned(struct ext4_allocation_context *ac,
BUG_ON(sbi->s_stripe == 0);
/* find first stripe-aligned block in group */
- first_group_block = e4b->bd_group * EXT4_BLOCKS_PER_GROUP(sb)
- + le32_to_cpu(sbi->s_es->s_first_data_block);
+ first_group_block = ext4_group_first_block_no(sb, e4b->bd_group);
+
a = first_group_block + sbi->s_stripe - 1;
do_div(a, sbi->s_stripe);
i = (a * sbi->s_stripe) - first_group_block;
@@ -2256,7 +2253,7 @@ int ext4_mb_add_groupinfo(struct super_block *sb, ext4_group_t group,
INIT_LIST_HEAD(&meta_group_info[i]->bb_prealloc_list);
init_rwsem(&meta_group_info[i]->alloc_sem);
- meta_group_info[i]->bb_free_root.rb_node = NULL;
+ meta_group_info[i]->bb_free_root = RB_ROOT;
#ifdef DOUBLE_CHECK
{
@@ -2560,12 +2557,9 @@ static void release_blocks_on_commit(journal_t *journal, transaction_t *txn)
ext4_unlock_group(sb, entry->group);
if (test_opt(sb, DISCARD)) {
ext4_fsblk_t discard_block;
- struct ext4_super_block *es = EXT4_SB(sb)->s_es;
- discard_block = (ext4_fsblk_t)entry->group *
- EXT4_BLOCKS_PER_GROUP(sb)
- + entry->start_blk
- + le32_to_cpu(es->s_first_data_block);
+ discard_block = entry->start_blk +
+ ext4_group_first_block_no(sb, entry->group);
trace_ext4_discard_blocks(sb,
(unsigned long long)discard_block,
entry->count);
@@ -2703,14 +2697,11 @@ ext4_mb_mark_diskspace_used(struct ext4_allocation_context *ac,
if (err)
goto out_err;
- block = ac->ac_b_ex.fe_group * EXT4_BLOCKS_PER_GROUP(sb)
- + ac->ac_b_ex.fe_start
- + le32_to_cpu(es->s_first_data_block);
+ block = ext4_grp_offs_to_block(sb, &ac->ac_b_ex);
len = ac->ac_b_ex.fe_len;
if (!ext4_data_block_valid(sbi, block, len)) {
- ext4_error(sb, __func__,
- "Allocating blocks %llu-%llu which overlap "
+ ext4_error(sb, "Allocating blocks %llu-%llu which overlap "
"fs metadata\n", block, block+len);
/* File system mounted not to panic on error
* Fix the bitmap and repeat the block allocation
@@ -3161,9 +3152,7 @@ ext4_mb_use_preallocated(struct ext4_allocation_context *ac)
/* The max size of hash table is PREALLOC_TB_SIZE */
order = PREALLOC_TB_SIZE - 1;
- goal_block = ac->ac_g_ex.fe_group * EXT4_BLOCKS_PER_GROUP(ac->ac_sb) +
- ac->ac_g_ex.fe_start +
- le32_to_cpu(EXT4_SB(ac->ac_sb)->s_es->s_first_data_block);
+ goal_block = ext4_grp_offs_to_block(ac->ac_sb, &ac->ac_g_ex);
/*
* search for the prealloc space that is having
* minimal distance from the goal block.
@@ -3526,8 +3515,7 @@ ext4_mb_release_inode_pa(struct ext4_buddy *e4b, struct buffer_head *bitmap_bh,
if (bit >= end)
break;
next = mb_find_next_bit(bitmap_bh->b_data, end, bit);
- start = group * EXT4_BLOCKS_PER_GROUP(sb) + bit +
- le32_to_cpu(sbi->s_es->s_first_data_block);
+ start = ext4_group_first_block_no(sb, group) + bit;
mb_debug(1, " free preallocated %u/%u in group %u\n",
(unsigned) start, (unsigned) next - bit,
(unsigned) group);
@@ -3623,15 +3611,13 @@ ext4_mb_discard_group_preallocations(struct super_block *sb,
bitmap_bh = ext4_read_block_bitmap(sb, group);
if (bitmap_bh == NULL) {
- ext4_error(sb, __func__, "Error in reading block "
- "bitmap for %u", group);
+ ext4_error(sb, "Error reading block bitmap for %u", group);
return 0;
}
err = ext4_mb_load_buddy(sb, group, &e4b);
if (err) {
- ext4_error(sb, __func__, "Error in loading buddy "
- "information for %u", group);
+ ext4_error(sb, "Error loading buddy information for %u", group);
put_bh(bitmap_bh);
return 0;
}
@@ -3804,15 +3790,15 @@ repeat:
err = ext4_mb_load_buddy(sb, group, &e4b);
if (err) {
- ext4_error(sb, __func__, "Error in loading buddy "
- "information for %u", group);
+ ext4_error(sb, "Error loading buddy information for %u",
+ group);
continue;
}
bitmap_bh = ext4_read_block_bitmap(sb, group);
if (bitmap_bh == NULL) {
- ext4_error(sb, __func__, "Error in reading block "
- "bitmap for %u", group);
+ ext4_error(sb, "Error reading block bitmap for %u",
+ group);
ext4_mb_release_desc(&e4b);
continue;
}
@@ -3938,7 +3924,7 @@ static void ext4_mb_group_or_file(struct ext4_allocation_context *ac)
/* don't use group allocation for large files */
size = max(size, isize);
- if (size >= sbi->s_mb_stream_request) {
+ if (size > sbi->s_mb_stream_request) {
ac->ac_flags |= EXT4_MB_STREAM_ALLOC;
return;
}
@@ -4077,8 +4063,8 @@ ext4_mb_discard_lg_preallocations(struct super_block *sb,
ext4_get_group_no_and_offset(sb, pa->pa_pstart, &group, NULL);
if (ext4_mb_load_buddy(sb, group, &e4b)) {
- ext4_error(sb, __func__, "Error in loading buddy "
- "information for %u", group);
+ ext4_error(sb, "Error loading buddy information for %u",
+ group);
continue;
}
ext4_lock_group(sb, group);
@@ -4476,10 +4462,10 @@ void ext4_free_blocks(handle_t *handle, struct inode *inode,
sbi = EXT4_SB(sb);
es = EXT4_SB(sb)->s_es;
- if (!ext4_data_block_valid(sbi, block, count)) {
- ext4_error(sb, __func__,
- "Freeing blocks not in datazone - "
- "block = %llu, count = %lu", block, count);
+ if (!(flags & EXT4_FREE_BLOCKS_VALIDATED) &&
+ !ext4_data_block_valid(sbi, block, count)) {
+ ext4_error(sb, "Freeing blocks not in datazone - "
+ "block = %llu, count = %lu", block, count);
goto error_return;
}
@@ -4547,8 +4533,7 @@ do_more:
in_range(block + count - 1, ext4_inode_table(sb, gdp),
EXT4_SB(sb)->s_itb_per_group)) {
- ext4_error(sb, __func__,
- "Freeing blocks in system zone - "
+ ext4_error(sb, "Freeing blocks in system zone - "
"Block = %llu, count = %lu", block, count);
/* err = 0. ext4_std_error should be a no op */
goto error_return;
diff --git a/fs/ext4/mballoc.h b/fs/ext4/mballoc.h
index 436521cae456..b619322c76f0 100644
--- a/fs/ext4/mballoc.h
+++ b/fs/ext4/mballoc.h
@@ -220,16 +220,9 @@ struct ext4_buddy {
#define EXT4_MB_BITMAP(e4b) ((e4b)->bd_bitmap)
#define EXT4_MB_BUDDY(e4b) ((e4b)->bd_buddy)
-#define in_range(b, first, len) ((b) >= (first) && (b) <= (first) + (len) - 1)
-
static inline ext4_fsblk_t ext4_grp_offs_to_block(struct super_block *sb,
struct ext4_free_extent *fex)
{
- ext4_fsblk_t block;
-
- block = (ext4_fsblk_t) fex->fe_group * EXT4_BLOCKS_PER_GROUP(sb)
- + fex->fe_start
- + le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block);
- return block;
+ return ext4_group_first_block_no(sb, fex->fe_group) + fex->fe_start;
}
#endif
diff --git a/fs/ext4/migrate.c b/fs/ext4/migrate.c
index 81415814b00b..8b87bd0eac95 100644
--- a/fs/ext4/migrate.c
+++ b/fs/ext4/migrate.c
@@ -365,12 +365,12 @@ static int ext4_ext_swap_inode_data(handle_t *handle, struct inode *inode,
* happened after we started the migrate. We need to
* fail the migrate
*/
- if (!(EXT4_I(inode)->i_state & EXT4_STATE_EXT_MIGRATE)) {
+ if (!ext4_test_inode_state(inode, EXT4_STATE_EXT_MIGRATE)) {
retval = -EAGAIN;
up_write(&EXT4_I(inode)->i_data_sem);
goto err_out;
} else
- EXT4_I(inode)->i_state &= ~EXT4_STATE_EXT_MIGRATE;
+ ext4_clear_inode_state(inode, EXT4_STATE_EXT_MIGRATE);
/*
* We have the extent map build with the tmp inode.
* Now copy the i_data across
@@ -503,14 +503,10 @@ int ext4_ext_migrate(struct inode *inode)
}
i_size_write(tmp_inode, i_size_read(inode));
/*
- * We don't want the inode to be reclaimed
- * if we got interrupted in between. We have
- * this tmp inode carrying reference to the
- * data blocks of the original file. We set
- * the i_nlink to zero at the last stage after
- * switching the original file to extent format
+ * Set the i_nlink to zero so it will be deleted later
+ * when we drop inode reference.
*/
- tmp_inode->i_nlink = 1;
+ tmp_inode->i_nlink = 0;
ext4_ext_tree_init(handle, tmp_inode);
ext4_orphan_add(handle, tmp_inode);
@@ -533,10 +529,20 @@ int ext4_ext_migrate(struct inode *inode)
* allocation.
*/
down_read((&EXT4_I(inode)->i_data_sem));
- EXT4_I(inode)->i_state |= EXT4_STATE_EXT_MIGRATE;
+ ext4_set_inode_state(inode, EXT4_STATE_EXT_MIGRATE);
up_read((&EXT4_I(inode)->i_data_sem));
handle = ext4_journal_start(inode, 1);
+ if (IS_ERR(handle)) {
+ /*
+ * It is impossible to update on-disk structures without
+ * a handle, so just rollback in-core changes and live other
+ * work to orphan_list_cleanup()
+ */
+ ext4_orphan_del(NULL, tmp_inode);
+ retval = PTR_ERR(handle);
+ goto out;
+ }
ei = EXT4_I(inode);
i_data = ei->i_data;
@@ -618,15 +624,8 @@ err_out:
/* Reset the extent details */
ext4_ext_tree_init(handle, tmp_inode);
-
- /*
- * Set the i_nlink to zero so that
- * generic_drop_inode really deletes the
- * inode
- */
- tmp_inode->i_nlink = 0;
-
ext4_journal_stop(handle);
+out:
unlock_new_inode(tmp_inode);
iput(tmp_inode);
diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c
index 82c415be87a4..aa5fe28d180f 100644
--- a/fs/ext4/move_extent.c
+++ b/fs/ext4/move_extent.c
@@ -152,12 +152,12 @@ mext_check_null_inode(struct inode *inode1, struct inode *inode2,
int ret = 0;
if (inode1 == NULL) {
- ext4_error(inode2->i_sb, function,
+ __ext4_error(inode2->i_sb, function,
"Both inodes should not be NULL: "
"inode1 NULL inode2 %lu", inode2->i_ino);
ret = -EIO;
} else if (inode2 == NULL) {
- ext4_error(inode1->i_sb, function,
+ __ext4_error(inode1->i_sb, function,
"Both inodes should not be NULL: "
"inode1 %lu inode2 NULL", inode1->i_ino);
ret = -EIO;
@@ -252,6 +252,7 @@ mext_insert_across_blocks(handle_t *handle, struct inode *orig_inode,
}
o_start->ee_len = start_ext->ee_len;
+ eblock = le32_to_cpu(start_ext->ee_block);
new_flag = 1;
} else if (start_ext->ee_len && new_ext->ee_len &&
@@ -262,6 +263,7 @@ mext_insert_across_blocks(handle_t *handle, struct inode *orig_inode,
* orig |------------------------------|
*/
o_start->ee_len = start_ext->ee_len;
+ eblock = le32_to_cpu(start_ext->ee_block);
new_flag = 1;
} else if (!start_ext->ee_len && new_ext->ee_len &&
@@ -475,7 +477,6 @@ mext_leaf_block(handle_t *handle, struct inode *orig_inode,
struct ext4_extent *oext, *o_start, *o_end, *prev_ext;
struct ext4_extent new_ext, start_ext, end_ext;
ext4_lblk_t new_ext_end;
- ext4_fsblk_t new_phys_end;
int oext_alen, new_ext_alen, end_ext_alen;
int depth = ext_depth(orig_inode);
int ret;
@@ -489,7 +490,6 @@ mext_leaf_block(handle_t *handle, struct inode *orig_inode,
new_ext.ee_len = dext->ee_len;
new_ext_alen = ext4_ext_get_actual_len(&new_ext);
new_ext_end = le32_to_cpu(new_ext.ee_block) + new_ext_alen - 1;
- new_phys_end = ext_pblock(&new_ext) + new_ext_alen - 1;
/*
* Case: original extent is first
@@ -502,6 +502,7 @@ mext_leaf_block(handle_t *handle, struct inode *orig_inode,
le32_to_cpu(oext->ee_block) + oext_alen) {
start_ext.ee_len = cpu_to_le16(le32_to_cpu(new_ext.ee_block) -
le32_to_cpu(oext->ee_block));
+ start_ext.ee_block = oext->ee_block;
copy_extent_status(oext, &start_ext);
} else if (oext > EXT_FIRST_EXTENT(orig_path[depth].p_hdr)) {
prev_ext = oext - 1;
@@ -515,6 +516,7 @@ mext_leaf_block(handle_t *handle, struct inode *orig_inode,
start_ext.ee_len = cpu_to_le16(
ext4_ext_get_actual_len(prev_ext) +
new_ext_alen);
+ start_ext.ee_block = oext->ee_block;
copy_extent_status(prev_ext, &start_ext);
new_ext.ee_len = 0;
}
@@ -526,7 +528,7 @@ mext_leaf_block(handle_t *handle, struct inode *orig_inode,
* new_ext |-------|
*/
if (le32_to_cpu(oext->ee_block) + oext_alen - 1 < new_ext_end) {
- ext4_error(orig_inode->i_sb, __func__,
+ ext4_error(orig_inode->i_sb,
"new_ext_end(%u) should be less than or equal to "
"oext->ee_block(%u) + oext_alen(%d) - 1",
new_ext_end, le32_to_cpu(oext->ee_block),
@@ -689,12 +691,12 @@ mext_replace_branches(handle_t *handle, struct inode *orig_inode,
while (1) {
/* The extent for donor must be found. */
if (!dext) {
- ext4_error(donor_inode->i_sb, __func__,
+ ext4_error(donor_inode->i_sb,
"The extent for donor must be found");
*err = -EIO;
goto out;
} else if (donor_off != le32_to_cpu(tmp_dext.ee_block)) {
- ext4_error(donor_inode->i_sb, __func__,
+ ext4_error(donor_inode->i_sb,
"Donor offset(%u) and the first block of donor "
"extent(%u) should be equal",
donor_off,
@@ -928,7 +930,7 @@ out2:
}
/**
- * mext_check_argumants - Check whether move extent can be done
+ * mext_check_arguments - Check whether move extent can be done
*
* @orig_inode: original inode
* @donor_inode: donor inode
@@ -949,14 +951,6 @@ mext_check_arguments(struct inode *orig_inode,
unsigned int blkbits = orig_inode->i_blkbits;
unsigned int blocksize = 1 << blkbits;
- /* Regular file check */
- if (!S_ISREG(orig_inode->i_mode) || !S_ISREG(donor_inode->i_mode)) {
- ext4_debug("ext4 move extent: The argument files should be "
- "regular file [ino:orig %lu, donor %lu]\n",
- orig_inode->i_ino, donor_inode->i_ino);
- return -EINVAL;
- }
-
if (donor_inode->i_mode & (S_ISUID|S_ISGID)) {
ext4_debug("ext4 move extent: suid or sgid is set"
" to donor file [ino:orig %lu, donor %lu]\n",
@@ -1204,6 +1198,14 @@ ext4_move_extents(struct file *o_filp, struct file *d_filp,
return -EINVAL;
}
+ /* Regular file check */
+ if (!S_ISREG(orig_inode->i_mode) || !S_ISREG(donor_inode->i_mode)) {
+ ext4_debug("ext4 move extent: The argument files should be "
+ "regular file [ino:orig %lu, donor %lu]\n",
+ orig_inode->i_ino, donor_inode->i_ino);
+ return -EINVAL;
+ }
+
/* Protect orig and donor inodes against a truncate */
ret1 = mext_inode_double_lock(orig_inode, donor_inode);
if (ret1 < 0)
@@ -1351,7 +1353,7 @@ ext4_move_extents(struct file *o_filp, struct file *d_filp,
if (ret1 < 0)
break;
if (*moved_len > len) {
- ext4_error(orig_inode->i_sb, __func__,
+ ext4_error(orig_inode->i_sb,
"We replaced blocks too much! "
"sum of replaced: %llu requested: %llu",
*moved_len, len);
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 17a17e10dd60..608d21f873ec 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -383,8 +383,7 @@ dx_probe(const struct qstr *d_name, struct inode *dir,
if (root->info.hash_version != DX_HASH_TEA &&
root->info.hash_version != DX_HASH_HALF_MD4 &&
root->info.hash_version != DX_HASH_LEGACY) {
- ext4_warning(dir->i_sb, __func__,
- "Unrecognised inode hash code %d",
+ ext4_warning(dir->i_sb, "Unrecognised inode hash code %d",
root->info.hash_version);
brelse(bh);
*err = ERR_BAD_DX_DIR;
@@ -399,8 +398,7 @@ dx_probe(const struct qstr *d_name, struct inode *dir,
hash = hinfo->hash;
if (root->info.unused_flags & 1) {
- ext4_warning(dir->i_sb, __func__,
- "Unimplemented inode hash flags: %#06x",
+ ext4_warning(dir->i_sb, "Unimplemented inode hash flags: %#06x",
root->info.unused_flags);
brelse(bh);
*err = ERR_BAD_DX_DIR;
@@ -408,8 +406,7 @@ dx_probe(const struct qstr *d_name, struct inode *dir,
}
if ((indirect = root->info.indirect_levels) > 1) {
- ext4_warning(dir->i_sb, __func__,
- "Unimplemented inode hash depth: %#06x",
+ ext4_warning(dir->i_sb, "Unimplemented inode hash depth: %#06x",
root->info.indirect_levels);
brelse(bh);
*err = ERR_BAD_DX_DIR;
@@ -421,8 +418,7 @@ dx_probe(const struct qstr *d_name, struct inode *dir,
if (dx_get_limit(entries) != dx_root_limit(dir,
root->info.info_length)) {
- ext4_warning(dir->i_sb, __func__,
- "dx entry: limit != root limit");
+ ext4_warning(dir->i_sb, "dx entry: limit != root limit");
brelse(bh);
*err = ERR_BAD_DX_DIR;
goto fail;
@@ -433,7 +429,7 @@ dx_probe(const struct qstr *d_name, struct inode *dir,
{
count = dx_get_count(entries);
if (!count || count > dx_get_limit(entries)) {
- ext4_warning(dir->i_sb, __func__,
+ ext4_warning(dir->i_sb,
"dx entry: no count or count > limit");
brelse(bh);
*err = ERR_BAD_DX_DIR;
@@ -478,7 +474,7 @@ dx_probe(const struct qstr *d_name, struct inode *dir,
goto fail2;
at = entries = ((struct dx_node *) bh->b_data)->entries;
if (dx_get_limit(entries) != dx_node_limit (dir)) {
- ext4_warning(dir->i_sb, __func__,
+ ext4_warning(dir->i_sb,
"dx entry: limit != node limit");
brelse(bh);
*err = ERR_BAD_DX_DIR;
@@ -494,7 +490,7 @@ fail2:
}
fail:
if (*err == ERR_BAD_DX_DIR)
- ext4_warning(dir->i_sb, __func__,
+ ext4_warning(dir->i_sb,
"Corrupt dir inode %ld, running e2fsck is "
"recommended.", dir->i_ino);
return NULL;
@@ -947,9 +943,8 @@ restart:
wait_on_buffer(bh);
if (!buffer_uptodate(bh)) {
/* read error, skip block & hope for the best */
- ext4_error(sb, __func__, "reading directory #%lu "
- "offset %lu", dir->i_ino,
- (unsigned long)block);
+ ext4_error(sb, "reading directory #%lu offset %lu",
+ dir->i_ino, (unsigned long)block);
brelse(bh);
goto next;
}
@@ -1041,7 +1036,7 @@ static struct buffer_head * ext4_dx_find_entry(struct inode *dir, const struct q
retval = ext4_htree_next_block(dir, hash, frame,
frames, NULL);
if (retval < 0) {
- ext4_warning(sb, __func__,
+ ext4_warning(sb,
"error reading index page in directory #%lu",
dir->i_ino);
*err = retval;
@@ -1071,14 +1066,13 @@ static struct dentry *ext4_lookup(struct inode *dir, struct dentry *dentry, stru
__u32 ino = le32_to_cpu(de->inode);
brelse(bh);
if (!ext4_valid_inum(dir->i_sb, ino)) {
- ext4_error(dir->i_sb, "ext4_lookup",
- "bad inode number: %u", ino);
+ ext4_error(dir->i_sb, "bad inode number: %u", ino);
return ERR_PTR(-EIO);
}
inode = ext4_iget(dir->i_sb, ino);
if (unlikely(IS_ERR(inode))) {
if (PTR_ERR(inode) == -ESTALE) {
- ext4_error(dir->i_sb, __func__,
+ ext4_error(dir->i_sb,
"deleted inode referenced: %u",
ino);
return ERR_PTR(-EIO);
@@ -1110,7 +1104,7 @@ struct dentry *ext4_get_parent(struct dentry *child)
brelse(bh);
if (!ext4_valid_inum(child->d_inode->i_sb, ino)) {
- ext4_error(child->d_inode->i_sb, "ext4_get_parent",
+ ext4_error(child->d_inode->i_sb,
"bad inode number: %u", ino);
return ERR_PTR(-EIO);
}
@@ -1410,7 +1404,7 @@ static int make_indexed_dir(handle_t *handle, struct dentry *dentry,
de = (struct ext4_dir_entry_2 *)((char *)fde +
ext4_rec_len_from_disk(fde->rec_len, blocksize));
if ((char *) de >= (((char *) root) + blocksize)) {
- ext4_error(dir->i_sb, __func__,
+ ext4_error(dir->i_sb,
"invalid rec_len for '..' in inode %lu",
dir->i_ino);
brelse(bh);
@@ -1575,8 +1569,7 @@ static int ext4_dx_add_entry(handle_t *handle, struct dentry *dentry,
if (levels && (dx_get_count(frames->entries) ==
dx_get_limit(frames->entries))) {
- ext4_warning(sb, __func__,
- "Directory index full!");
+ ext4_warning(sb, "Directory index full!");
err = -ENOSPC;
goto cleanup;
}
@@ -1916,11 +1909,11 @@ static int empty_dir(struct inode *inode)
if (inode->i_size < EXT4_DIR_REC_LEN(1) + EXT4_DIR_REC_LEN(2) ||
!(bh = ext4_bread(NULL, inode, 0, 0, &err))) {
if (err)
- ext4_error(inode->i_sb, __func__,
+ ext4_error(inode->i_sb,
"error %d reading directory #%lu offset 0",
err, inode->i_ino);
else
- ext4_warning(inode->i_sb, __func__,
+ ext4_warning(inode->i_sb,
"bad directory (dir #%lu) - no data block",
inode->i_ino);
return 1;
@@ -1931,7 +1924,7 @@ static int empty_dir(struct inode *inode)
!le32_to_cpu(de1->inode) ||
strcmp(".", de->name) ||
strcmp("..", de1->name)) {
- ext4_warning(inode->i_sb, "empty_dir",
+ ext4_warning(inode->i_sb,
"bad directory (dir #%lu) - no `.' or `..'",
inode->i_ino);
brelse(bh);
@@ -1949,7 +1942,7 @@ static int empty_dir(struct inode *inode)
offset >> EXT4_BLOCK_SIZE_BITS(sb), 0, &err);
if (!bh) {
if (err)
- ext4_error(sb, __func__,
+ ext4_error(sb,
"error %d reading directory"
" #%lu offset %u",
err, inode->i_ino, offset);
@@ -2020,11 +2013,18 @@ int ext4_orphan_add(handle_t *handle, struct inode *inode)
err = ext4_reserve_inode_write(handle, inode, &iloc);
if (err)
goto out_unlock;
+ /*
+ * Due to previous errors inode may be already a part of on-disk
+ * orphan list. If so skip on-disk list modification.
+ */
+ if (NEXT_ORPHAN(inode) && NEXT_ORPHAN(inode) <=
+ (le32_to_cpu(EXT4_SB(sb)->s_es->s_inodes_count)))
+ goto mem_insert;
/* Insert this inode at the head of the on-disk orphan list... */
NEXT_ORPHAN(inode) = le32_to_cpu(EXT4_SB(sb)->s_es->s_last_orphan);
EXT4_SB(sb)->s_es->s_last_orphan = cpu_to_le32(inode->i_ino);
- err = ext4_handle_dirty_metadata(handle, inode, EXT4_SB(sb)->s_sbh);
+ err = ext4_handle_dirty_metadata(handle, NULL, EXT4_SB(sb)->s_sbh);
rc = ext4_mark_iloc_dirty(handle, inode, &iloc);
if (!err)
err = rc;
@@ -2037,6 +2037,7 @@ int ext4_orphan_add(handle_t *handle, struct inode *inode)
*
* This is safe: on error we're going to ignore the orphan list
* anyway on the next recovery. */
+mem_insert:
if (!err)
list_add(&EXT4_I(inode)->i_orphan, &EXT4_SB(sb)->s_orphan);
@@ -2096,7 +2097,7 @@ int ext4_orphan_del(handle_t *handle, struct inode *inode)
if (err)
goto out_brelse;
sbi->s_es->s_last_orphan = cpu_to_le32(ino_next);
- err = ext4_handle_dirty_metadata(handle, inode, sbi->s_sbh);
+ err = ext4_handle_dirty_metadata(handle, NULL, sbi->s_sbh);
} else {
struct ext4_iloc iloc2;
struct inode *i_prev =
@@ -2163,7 +2164,7 @@ static int ext4_rmdir(struct inode *dir, struct dentry *dentry)
if (retval)
goto end_rmdir;
if (!EXT4_DIR_LINK_EMPTY(inode))
- ext4_warning(inode->i_sb, "ext4_rmdir",
+ ext4_warning(inode->i_sb,
"empty directory has too many links (%d)",
inode->i_nlink);
inode->i_version++;
@@ -2215,7 +2216,7 @@ static int ext4_unlink(struct inode *dir, struct dentry *dentry)
goto end_unlink;
if (!inode->i_nlink) {
- ext4_warning(inode->i_sb, "ext4_unlink",
+ ext4_warning(inode->i_sb,
"Deleting nonexistent file (%lu), %d",
inode->i_ino, inode->i_nlink);
inode->i_nlink = 1;
@@ -2462,7 +2463,7 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry,
}
}
if (retval) {
- ext4_warning(old_dir->i_sb, "ext4_rename",
+ ext4_warning(old_dir->i_sb,
"Deleting old file (%lu), %d, error=%d",
old_dir->i_ino, old_dir->i_nlink, retval);
}
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index 3b2c5541d8a6..5692c48754a0 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -48,65 +48,54 @@ static int verify_group_input(struct super_block *sb,
ext4_get_group_no_and_offset(sb, start, NULL, &offset);
if (group != sbi->s_groups_count)
- ext4_warning(sb, __func__,
- "Cannot add at group %u (only %u groups)",
+ ext4_warning(sb, "Cannot add at group %u (only %u groups)",
input->group, sbi->s_groups_count);
else if (offset != 0)
- ext4_warning(sb, __func__, "Last group not full");
+ ext4_warning(sb, "Last group not full");
else if (input->reserved_blocks > input->blocks_count / 5)
- ext4_warning(sb, __func__, "Reserved blocks too high (%u)",
+ ext4_warning(sb, "Reserved blocks too high (%u)",
input->reserved_blocks);
else if (free_blocks_count < 0)
- ext4_warning(sb, __func__, "Bad blocks count %u",
+ ext4_warning(sb, "Bad blocks count %u",
input->blocks_count);
else if (!(bh = sb_bread(sb, end - 1)))
- ext4_warning(sb, __func__,
- "Cannot read last block (%llu)",
+ ext4_warning(sb, "Cannot read last block (%llu)",
end - 1);
else if (outside(input->block_bitmap, start, end))
- ext4_warning(sb, __func__,
- "Block bitmap not in group (block %llu)",
+ ext4_warning(sb, "Block bitmap not in group (block %llu)",
(unsigned long long)input->block_bitmap);
else if (outside(input->inode_bitmap, start, end))
- ext4_warning(sb, __func__,
- "Inode bitmap not in group (block %llu)",
+ ext4_warning(sb, "Inode bitmap not in group (block %llu)",
(unsigned long long)input->inode_bitmap);
else if (outside(input->inode_table, start, end) ||
outside(itend - 1, start, end))
- ext4_warning(sb, __func__,
- "Inode table not in group (blocks %llu-%llu)",
+ ext4_warning(sb, "Inode table not in group (blocks %llu-%llu)",
(unsigned long long)input->inode_table, itend - 1);
else if (input->inode_bitmap == input->block_bitmap)
- ext4_warning(sb, __func__,
- "Block bitmap same as inode bitmap (%llu)",
+ ext4_warning(sb, "Block bitmap same as inode bitmap (%llu)",
(unsigned long long)input->block_bitmap);
else if (inside(input->block_bitmap, input->inode_table, itend))
- ext4_warning(sb, __func__,
- "Block bitmap (%llu) in inode table (%llu-%llu)",
+ ext4_warning(sb, "Block bitmap (%llu) in inode table "
+ "(%llu-%llu)",
(unsigned long long)input->block_bitmap,
(unsigned long long)input->inode_table, itend - 1);
else if (inside(input->inode_bitmap, input->inode_table, itend))
- ext4_warning(sb, __func__,
- "Inode bitmap (%llu) in inode table (%llu-%llu)",
+ ext4_warning(sb, "Inode bitmap (%llu) in inode table "
+ "(%llu-%llu)",
(unsigned long long)input->inode_bitmap,
(unsigned long long)input->inode_table, itend - 1);
else if (inside(input->block_bitmap, start, metaend))
- ext4_warning(sb, __func__,
- "Block bitmap (%llu) in GDT table"
- " (%llu-%llu)",
+ ext4_warning(sb, "Block bitmap (%llu) in GDT table (%llu-%llu)",
(unsigned long long)input->block_bitmap,
start, metaend - 1);
else if (inside(input->inode_bitmap, start, metaend))
- ext4_warning(sb, __func__,
- "Inode bitmap (%llu) in GDT table"
- " (%llu-%llu)",
+ ext4_warning(sb, "Inode bitmap (%llu) in GDT table (%llu-%llu)",
(unsigned long long)input->inode_bitmap,
start, metaend - 1);
else if (inside(input->inode_table, start, metaend) ||
inside(itend - 1, start, metaend))
- ext4_warning(sb, __func__,
- "Inode table (%llu-%llu) overlaps"
- "GDT table (%llu-%llu)",
+ ext4_warning(sb, "Inode table (%llu-%llu) overlaps GDT table "
+ "(%llu-%llu)",
(unsigned long long)input->inode_table,
itend - 1, start, metaend - 1);
else
@@ -364,8 +353,7 @@ static int verify_reserved_gdb(struct super_block *sb,
while ((grp = ext4_list_backups(sb, &three, &five, &seven)) < end) {
if (le32_to_cpu(*p++) !=
grp * EXT4_BLOCKS_PER_GROUP(sb) + blk){
- ext4_warning(sb, __func__,
- "reserved GDT %llu"
+ ext4_warning(sb, "reserved GDT %llu"
" missing grp %d (%llu)",
blk, grp,
grp *
@@ -420,8 +408,7 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
*/
if (EXT4_SB(sb)->s_sbh->b_blocknr !=
le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block)) {
- ext4_warning(sb, __func__,
- "won't resize using backup superblock at %llu",
+ ext4_warning(sb, "won't resize using backup superblock at %llu",
(unsigned long long)EXT4_SB(sb)->s_sbh->b_blocknr);
return -EPERM;
}
@@ -444,8 +431,7 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
data = (__le32 *)dind->b_data;
if (le32_to_cpu(data[gdb_num % EXT4_ADDR_PER_BLOCK(sb)]) != gdblock) {
- ext4_warning(sb, __func__,
- "new group %u GDT block %llu not reserved",
+ ext4_warning(sb, "new group %u GDT block %llu not reserved",
input->group, gdblock);
err = -EINVAL;
goto exit_dind;
@@ -468,7 +454,7 @@ static int add_new_gdb(handle_t *handle, struct inode *inode,
GFP_NOFS);
if (!n_group_desc) {
err = -ENOMEM;
- ext4_warning(sb, __func__,
+ ext4_warning(sb,
"not enough memory for %lu groups", gdb_num + 1);
goto exit_inode;
}
@@ -567,8 +553,7 @@ static int reserve_backup_gdb(handle_t *handle, struct inode *inode,
/* Get each reserved primary GDT block and verify it holds backups */
for (res = 0; res < reserved_gdb; res++, blk++) {
if (le32_to_cpu(*data) != blk) {
- ext4_warning(sb, __func__,
- "reserved block %llu"
+ ext4_warning(sb, "reserved block %llu"
" not at offset %ld",
blk,
(long)(data - (__le32 *)dind->b_data));
@@ -713,8 +698,7 @@ static void update_backups(struct super_block *sb,
*/
exit_err:
if (err) {
- ext4_warning(sb, __func__,
- "can't update backup for group %u (err %d), "
+ ext4_warning(sb, "can't update backup for group %u (err %d), "
"forcing fsck on next reboot", group, err);
sbi->s_mount_state &= ~EXT4_VALID_FS;
sbi->s_es->s_state &= cpu_to_le16(~EXT4_VALID_FS);
@@ -753,20 +737,19 @@ int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input)
if (gdb_off == 0 && !EXT4_HAS_RO_COMPAT_FEATURE(sb,
EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER)) {
- ext4_warning(sb, __func__,
- "Can't resize non-sparse filesystem further");
+ ext4_warning(sb, "Can't resize non-sparse filesystem further");
return -EPERM;
}
if (ext4_blocks_count(es) + input->blocks_count <
ext4_blocks_count(es)) {
- ext4_warning(sb, __func__, "blocks_count overflow");
+ ext4_warning(sb, "blocks_count overflow");
return -EINVAL;
}
if (le32_to_cpu(es->s_inodes_count) + EXT4_INODES_PER_GROUP(sb) <
le32_to_cpu(es->s_inodes_count)) {
- ext4_warning(sb, __func__, "inodes_count overflow");
+ ext4_warning(sb, "inodes_count overflow");
return -EINVAL;
}
@@ -774,14 +757,13 @@ int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input)
if (!EXT4_HAS_COMPAT_FEATURE(sb,
EXT4_FEATURE_COMPAT_RESIZE_INODE)
|| !le16_to_cpu(es->s_reserved_gdt_blocks)) {
- ext4_warning(sb, __func__,
+ ext4_warning(sb,
"No reserved GDT blocks, can't resize");
return -EPERM;
}
inode = ext4_iget(sb, EXT4_RESIZE_INO);
if (IS_ERR(inode)) {
- ext4_warning(sb, __func__,
- "Error opening resize inode");
+ ext4_warning(sb, "Error opening resize inode");
return PTR_ERR(inode);
}
}
@@ -810,8 +792,7 @@ int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input)
mutex_lock(&sbi->s_resize_lock);
if (input->group != sbi->s_groups_count) {
- ext4_warning(sb, __func__,
- "multiple resizers run on filesystem!");
+ ext4_warning(sb, "multiple resizers run on filesystem!");
err = -EBUSY;
goto exit_journal;
}
@@ -997,13 +978,12 @@ int ext4_group_extend(struct super_block *sb, struct ext4_super_block *es,
" too large to resize to %llu blocks safely\n",
sb->s_id, n_blocks_count);
if (sizeof(sector_t) < 8)
- ext4_warning(sb, __func__, "CONFIG_LBDAF not enabled");
+ ext4_warning(sb, "CONFIG_LBDAF not enabled");
return -EINVAL;
}
if (n_blocks_count < o_blocks_count) {
- ext4_warning(sb, __func__,
- "can't shrink FS - resize aborted");
+ ext4_warning(sb, "can't shrink FS - resize aborted");
return -EBUSY;
}
@@ -1011,15 +991,14 @@ int ext4_group_extend(struct super_block *sb, struct ext4_super_block *es,
ext4_get_group_no_and_offset(sb, o_blocks_count, &group, &last);
if (last == 0) {
- ext4_warning(sb, __func__,
- "need to use ext2online to resize further");
+ ext4_warning(sb, "need to use ext2online to resize further");
return -EPERM;
}
add = EXT4_BLOCKS_PER_GROUP(sb) - last;
if (o_blocks_count + add < o_blocks_count) {
- ext4_warning(sb, __func__, "blocks_count overflow");
+ ext4_warning(sb, "blocks_count overflow");
return -EINVAL;
}
@@ -1027,16 +1006,13 @@ int ext4_group_extend(struct super_block *sb, struct ext4_super_block *es,
add = n_blocks_count - o_blocks_count;
if (o_blocks_count + add < n_blocks_count)
- ext4_warning(sb, __func__,
- "will only finish group (%llu"
- " blocks, %u new)",
+ ext4_warning(sb, "will only finish group (%llu blocks, %u new)",
o_blocks_count + add, add);
/* See if the device is actually as big as what was requested */
bh = sb_bread(sb, o_blocks_count + add - 1);
if (!bh) {
- ext4_warning(sb, __func__,
- "can't read last block, resize aborted");
+ ext4_warning(sb, "can't read last block, resize aborted");
return -ENOSPC;
}
brelse(bh);
@@ -1047,14 +1023,13 @@ int ext4_group_extend(struct super_block *sb, struct ext4_super_block *es,
handle = ext4_journal_start_sb(sb, 3);
if (IS_ERR(handle)) {
err = PTR_ERR(handle);
- ext4_warning(sb, __func__, "error %d on journal start", err);
+ ext4_warning(sb, "error %d on journal start", err);
goto exit_put;
}
mutex_lock(&EXT4_SB(sb)->s_resize_lock);
if (o_blocks_count != ext4_blocks_count(es)) {
- ext4_warning(sb, __func__,
- "multiple resizers run on filesystem!");
+ ext4_warning(sb, "multiple resizers run on filesystem!");
mutex_unlock(&EXT4_SB(sb)->s_resize_lock);
ext4_journal_stop(handle);
err = -EBUSY;
@@ -1063,8 +1038,7 @@ int ext4_group_extend(struct super_block *sb, struct ext4_super_block *es,
if ((err = ext4_journal_get_write_access(handle,
EXT4_SB(sb)->s_sbh))) {
- ext4_warning(sb, __func__,
- "error %d on journal write access", err);
+ ext4_warning(sb, "error %d on journal write access", err);
mutex_unlock(&EXT4_SB(sb)->s_resize_lock);
ext4_journal_stop(handle);
goto exit_put;
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 735c20d5fd56..ad1ee5f21bab 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -333,7 +333,7 @@ static void ext4_handle_error(struct super_block *sb)
sb->s_id);
}
-void ext4_error(struct super_block *sb, const char *function,
+void __ext4_error(struct super_block *sb, const char *function,
const char *fmt, ...)
{
va_list args;
@@ -347,6 +347,42 @@ void ext4_error(struct super_block *sb, const char *function,
ext4_handle_error(sb);
}
+void ext4_error_inode(const char *function, struct inode *inode,
+ const char *fmt, ...)
+{
+ va_list args;
+
+ va_start(args, fmt);
+ printk(KERN_CRIT "EXT4-fs error (device %s): %s: inode #%lu: (comm %s) ",
+ inode->i_sb->s_id, function, inode->i_ino, current->comm);
+ vprintk(fmt, args);
+ printk("\n");
+ va_end(args);
+
+ ext4_handle_error(inode->i_sb);
+}
+
+void ext4_error_file(const char *function, struct file *file,
+ const char *fmt, ...)
+{
+ va_list args;
+ struct inode *inode = file->f_dentry->d_inode;
+ char pathname[80], *path;
+
+ va_start(args, fmt);
+ path = d_path(&(file->f_path), pathname, sizeof(pathname));
+ if (!path)
+ path = "(unknown)";
+ printk(KERN_CRIT
+ "EXT4-fs error (device %s): %s: inode #%lu (comm %s path %s): ",
+ inode->i_sb->s_id, function, inode->i_ino, current->comm, path);
+ vprintk(fmt, args);
+ printk("\n");
+ va_end(args);
+
+ ext4_handle_error(inode->i_sb);
+}
+
static const char *ext4_decode_error(struct super_block *sb, int errno,
char nbuf[16])
{
@@ -450,7 +486,7 @@ void ext4_msg (struct super_block * sb, const char *prefix,
va_end(args);
}
-void ext4_warning(struct super_block *sb, const char *function,
+void __ext4_warning(struct super_block *sb, const char *function,
const char *fmt, ...)
{
va_list args;
@@ -507,7 +543,7 @@ void ext4_update_dynamic_rev(struct super_block *sb)
if (le32_to_cpu(es->s_rev_level) > EXT4_GOOD_OLD_REV)
return;
- ext4_warning(sb, __func__,
+ ext4_warning(sb,
"updating to rev %d because of new feature flag, "
"running e2fsck is recommended",
EXT4_DYNAMIC_REV);
@@ -708,7 +744,8 @@ static struct inode *ext4_alloc_inode(struct super_block *sb)
#ifdef CONFIG_QUOTA
ei->i_reserved_quota = 0;
#endif
- INIT_LIST_HEAD(&ei->i_aio_dio_complete_list);
+ INIT_LIST_HEAD(&ei->i_completed_io_list);
+ spin_lock_init(&ei->i_completed_io_lock);
ei->cur_aio_dio = NULL;
ei->i_sync_tid = 0;
ei->i_datasync_tid = 0;
@@ -796,10 +833,10 @@ static inline void ext4_show_quota_options(struct seq_file *seq,
if (sbi->s_qf_names[GRPQUOTA])
seq_printf(seq, ",grpjquota=%s", sbi->s_qf_names[GRPQUOTA]);
- if (sbi->s_mount_opt & EXT4_MOUNT_USRQUOTA)
+ if (test_opt(sb, USRQUOTA))
seq_puts(seq, ",usrquota");
- if (sbi->s_mount_opt & EXT4_MOUNT_GRPQUOTA)
+ if (test_opt(sb, GRPQUOTA))
seq_puts(seq, ",grpquota");
#endif
}
@@ -926,6 +963,9 @@ static int ext4_show_options(struct seq_file *seq, struct vfsmount *vfs)
if (test_opt(sb, NOLOAD))
seq_puts(seq, ",norecovery");
+ if (test_opt(sb, DIOREAD_NOLOCK))
+ seq_puts(seq, ",dioread_nolock");
+
ext4_show_quota_options(seq, sb);
return 0;
@@ -1109,6 +1149,7 @@ enum {
Opt_stripe, Opt_delalloc, Opt_nodelalloc,
Opt_block_validity, Opt_noblock_validity,
Opt_inode_readahead_blks, Opt_journal_ioprio,
+ Opt_dioread_nolock, Opt_dioread_lock,
Opt_discard, Opt_nodiscard,
};
@@ -1176,6 +1217,8 @@ static const match_table_t tokens = {
{Opt_auto_da_alloc, "auto_da_alloc=%u"},
{Opt_auto_da_alloc, "auto_da_alloc"},
{Opt_noauto_da_alloc, "noauto_da_alloc"},
+ {Opt_dioread_nolock, "dioread_nolock"},
+ {Opt_dioread_lock, "dioread_lock"},
{Opt_discard, "discard"},
{Opt_nodiscard, "nodiscard"},
{Opt_err, NULL},
@@ -1205,6 +1248,66 @@ static ext4_fsblk_t get_sb_block(void **data)
}
#define DEFAULT_JOURNAL_IOPRIO (IOPRIO_PRIO_VALUE(IOPRIO_CLASS_BE, 3))
+static char deprecated_msg[] = "Mount option \"%s\" will be removed by %s\n"
+ "Contact linux-ext4@vger.kernel.org if you think we should keep it.\n";
+
+#ifdef CONFIG_QUOTA
+static int set_qf_name(struct super_block *sb, int qtype, substring_t *args)
+{
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+ char *qname;
+
+ if (sb_any_quota_loaded(sb) &&
+ !sbi->s_qf_names[qtype]) {
+ ext4_msg(sb, KERN_ERR,
+ "Cannot change journaled "
+ "quota options when quota turned on");
+ return 0;
+ }
+ qname = match_strdup(args);
+ if (!qname) {
+ ext4_msg(sb, KERN_ERR,
+ "Not enough memory for storing quotafile name");
+ return 0;
+ }
+ if (sbi->s_qf_names[qtype] &&
+ strcmp(sbi->s_qf_names[qtype], qname)) {
+ ext4_msg(sb, KERN_ERR,
+ "%s quota file already specified", QTYPE2NAME(qtype));
+ kfree(qname);
+ return 0;
+ }
+ sbi->s_qf_names[qtype] = qname;
+ if (strchr(sbi->s_qf_names[qtype], '/')) {
+ ext4_msg(sb, KERN_ERR,
+ "quotafile must be on filesystem root");
+ kfree(sbi->s_qf_names[qtype]);
+ sbi->s_qf_names[qtype] = NULL;
+ return 0;
+ }
+ set_opt(sbi->s_mount_opt, QUOTA);
+ return 1;
+}
+
+static int clear_qf_name(struct super_block *sb, int qtype)
+{
+
+ struct ext4_sb_info *sbi = EXT4_SB(sb);
+
+ if (sb_any_quota_loaded(sb) &&
+ sbi->s_qf_names[qtype]) {
+ ext4_msg(sb, KERN_ERR, "Cannot change journaled quota options"
+ " when quota turned on");
+ return 0;
+ }
+ /*
+ * The space will be released later when all options are confirmed
+ * to be correct
+ */
+ sbi->s_qf_names[qtype] = NULL;
+ return 1;
+}
+#endif
static int parse_options(char *options, struct super_block *sb,
unsigned long *journal_devnum,
@@ -1217,8 +1320,7 @@ static int parse_options(char *options, struct super_block *sb,
int data_opt = 0;
int option;
#ifdef CONFIG_QUOTA
- int qtype, qfmt;
- char *qname;
+ int qfmt;
#endif
if (!options)
@@ -1229,19 +1331,31 @@ static int parse_options(char *options, struct super_block *sb,
if (!*p)
continue;
+ /*
+ * Initialize args struct so we know whether arg was
+ * found; some options take optional arguments.
+ */
+ args[0].to = args[0].from = 0;
token = match_token(p, tokens, args);
switch (token) {
case Opt_bsd_df:
+ ext4_msg(sb, KERN_WARNING, deprecated_msg, p, "2.6.38");
clear_opt(sbi->s_mount_opt, MINIX_DF);
break;
case Opt_minix_df:
+ ext4_msg(sb, KERN_WARNING, deprecated_msg, p, "2.6.38");
set_opt(sbi->s_mount_opt, MINIX_DF);
+
break;
case Opt_grpid:
+ ext4_msg(sb, KERN_WARNING, deprecated_msg, p, "2.6.38");
set_opt(sbi->s_mount_opt, GRPID);
+
break;
case Opt_nogrpid:
+ ext4_msg(sb, KERN_WARNING, deprecated_msg, p, "2.6.38");
clear_opt(sbi->s_mount_opt, GRPID);
+
break;
case Opt_resuid:
if (match_int(&args[0], &option))
@@ -1378,14 +1492,13 @@ static int parse_options(char *options, struct super_block *sb,
data_opt = EXT4_MOUNT_WRITEBACK_DATA;
datacheck:
if (is_remount) {
- if ((sbi->s_mount_opt & EXT4_MOUNT_DATA_FLAGS)
- != data_opt) {
+ if (test_opt(sb, DATA_FLAGS) != data_opt) {
ext4_msg(sb, KERN_ERR,
"Cannot change data mode on remount");
return 0;
}
} else {
- sbi->s_mount_opt &= ~EXT4_MOUNT_DATA_FLAGS;
+ clear_opt(sbi->s_mount_opt, DATA_FLAGS);
sbi->s_mount_opt |= data_opt;
}
break;
@@ -1397,63 +1510,22 @@ static int parse_options(char *options, struct super_block *sb,
break;
#ifdef CONFIG_QUOTA
case Opt_usrjquota:
- qtype = USRQUOTA;
- goto set_qf_name;
- case Opt_grpjquota:
- qtype = GRPQUOTA;
-set_qf_name:
- if (sb_any_quota_loaded(sb) &&
- !sbi->s_qf_names[qtype]) {
- ext4_msg(sb, KERN_ERR,
- "Cannot change journaled "
- "quota options when quota turned on");
+ if (!set_qf_name(sb, USRQUOTA, &args[0]))
return 0;
- }
- qname = match_strdup(&args[0]);
- if (!qname) {
- ext4_msg(sb, KERN_ERR,
- "Not enough memory for "
- "storing quotafile name");
- return 0;
- }
- if (sbi->s_qf_names[qtype] &&
- strcmp(sbi->s_qf_names[qtype], qname)) {
- ext4_msg(sb, KERN_ERR,
- "%s quota file already "
- "specified", QTYPE2NAME(qtype));
- kfree(qname);
- return 0;
- }
- sbi->s_qf_names[qtype] = qname;
- if (strchr(sbi->s_qf_names[qtype], '/')) {
- ext4_msg(sb, KERN_ERR,
- "quotafile must be on "
- "filesystem root");
- kfree(sbi->s_qf_names[qtype]);
- sbi->s_qf_names[qtype] = NULL;
+ break;
+ case Opt_grpjquota:
+ if (!set_qf_name(sb, GRPQUOTA, &args[0]))
return 0;
- }
- set_opt(sbi->s_mount_opt, QUOTA);
break;
case Opt_offusrjquota:
- qtype = USRQUOTA;
- goto clear_qf_name;
+ if (!clear_qf_name(sb, USRQUOTA))
+ return 0;
+ break;
case Opt_offgrpjquota:
- qtype = GRPQUOTA;
-clear_qf_name:
- if (sb_any_quota_loaded(sb) &&
- sbi->s_qf_names[qtype]) {
- ext4_msg(sb, KERN_ERR, "Cannot change "
- "journaled quota options when "
- "quota turned on");
+ if (!clear_qf_name(sb, GRPQUOTA))
return 0;
- }
- /*
- * The space will be released later when all options
- * are confirmed to be correct
- */
- sbi->s_qf_names[qtype] = NULL;
break;
+
case Opt_jqfmt_vfsold:
qfmt = QFMT_VFS_OLD;
goto set_qf_format;
@@ -1518,10 +1590,11 @@ set_qf_format:
clear_opt(sbi->s_mount_opt, BARRIER);
break;
case Opt_barrier:
- if (match_int(&args[0], &option)) {
- set_opt(sbi->s_mount_opt, BARRIER);
- break;
- }
+ if (args[0].from) {
+ if (match_int(&args[0], &option))
+ return 0;
+ } else
+ option = 1; /* No argument, default to 1 */
if (option)
set_opt(sbi->s_mount_opt, BARRIER);
else
@@ -1594,10 +1667,11 @@ set_qf_format:
set_opt(sbi->s_mount_opt,NO_AUTO_DA_ALLOC);
break;
case Opt_auto_da_alloc:
- if (match_int(&args[0], &option)) {
- clear_opt(sbi->s_mount_opt, NO_AUTO_DA_ALLOC);
- break;
- }
+ if (args[0].from) {
+ if (match_int(&args[0], &option))
+ return 0;
+ } else
+ option = 1; /* No argument, default to 1 */
if (option)
clear_opt(sbi->s_mount_opt, NO_AUTO_DA_ALLOC);
else
@@ -1609,6 +1683,12 @@ set_qf_format:
case Opt_nodiscard:
clear_opt(sbi->s_mount_opt, DISCARD);
break;
+ case Opt_dioread_nolock:
+ set_opt(sbi->s_mount_opt, DIOREAD_NOLOCK);
+ break;
+ case Opt_dioread_lock:
+ clear_opt(sbi->s_mount_opt, DIOREAD_NOLOCK);
+ break;
default:
ext4_msg(sb, KERN_ERR,
"Unrecognized mount option \"%s\" "
@@ -1618,18 +1698,13 @@ set_qf_format:
}
#ifdef CONFIG_QUOTA
if (sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) {
- if ((sbi->s_mount_opt & EXT4_MOUNT_USRQUOTA) &&
- sbi->s_qf_names[USRQUOTA])
+ if (test_opt(sb, USRQUOTA) && sbi->s_qf_names[USRQUOTA])
clear_opt(sbi->s_mount_opt, USRQUOTA);
- if ((sbi->s_mount_opt & EXT4_MOUNT_GRPQUOTA) &&
- sbi->s_qf_names[GRPQUOTA])
+ if (test_opt(sb, GRPQUOTA) && sbi->s_qf_names[GRPQUOTA])
clear_opt(sbi->s_mount_opt, GRPQUOTA);
- if ((sbi->s_qf_names[USRQUOTA] &&
- (sbi->s_mount_opt & EXT4_MOUNT_GRPQUOTA)) ||
- (sbi->s_qf_names[GRPQUOTA] &&
- (sbi->s_mount_opt & EXT4_MOUNT_USRQUOTA))) {
+ if (test_opt(sb, GRPQUOTA) || test_opt(sb, USRQUOTA)) {
ext4_msg(sb, KERN_ERR, "old and new quota "
"format mixing");
return 0;
@@ -2432,8 +2507,11 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
def_mount_opts = le32_to_cpu(es->s_default_mount_opts);
if (def_mount_opts & EXT4_DEFM_DEBUG)
set_opt(sbi->s_mount_opt, DEBUG);
- if (def_mount_opts & EXT4_DEFM_BSDGROUPS)
+ if (def_mount_opts & EXT4_DEFM_BSDGROUPS) {
+ ext4_msg(sb, KERN_WARNING, deprecated_msg, "bsdgroups",
+ "2.6.38");
set_opt(sbi->s_mount_opt, GRPID);
+ }
if (def_mount_opts & EXT4_DEFM_UID16)
set_opt(sbi->s_mount_opt, NO_UID32);
#ifdef CONFIG_EXT4_FS_XATTR
@@ -2445,11 +2523,11 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
set_opt(sbi->s_mount_opt, POSIX_ACL);
#endif
if ((def_mount_opts & EXT4_DEFM_JMODE) == EXT4_DEFM_JMODE_DATA)
- sbi->s_mount_opt |= EXT4_MOUNT_JOURNAL_DATA;
+ set_opt(sbi->s_mount_opt, JOURNAL_DATA);
else if ((def_mount_opts & EXT4_DEFM_JMODE) == EXT4_DEFM_JMODE_ORDERED)
- sbi->s_mount_opt |= EXT4_MOUNT_ORDERED_DATA;
+ set_opt(sbi->s_mount_opt, ORDERED_DATA);
else if ((def_mount_opts & EXT4_DEFM_JMODE) == EXT4_DEFM_JMODE_WBACK)
- sbi->s_mount_opt |= EXT4_MOUNT_WRITEBACK_DATA;
+ set_opt(sbi->s_mount_opt, WRITEBACK_DATA);
if (le16_to_cpu(sbi->s_es->s_errors) == EXT4_ERRORS_PANIC)
set_opt(sbi->s_mount_opt, ERRORS_PANIC);
@@ -2477,7 +2555,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
goto failed_mount;
sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
- ((sbi->s_mount_opt & EXT4_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);
+ (test_opt(sb, POSIX_ACL) ? MS_POSIXACL : 0);
if (le32_to_cpu(es->s_rev_level) == EXT4_GOOD_OLD_REV &&
(EXT4_HAS_COMPAT_FEATURE(sb, ~0U) ||
@@ -2766,7 +2844,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_RECOVER)) {
ext4_msg(sb, KERN_ERR, "required journal recovery "
"suppressed and not mounted read-only");
- goto failed_mount4;
+ goto failed_mount_wq;
} else {
clear_opt(sbi->s_mount_opt, DATA_FLAGS);
set_opt(sbi->s_mount_opt, WRITEBACK_DATA);
@@ -2779,7 +2857,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
!jbd2_journal_set_features(EXT4_SB(sb)->s_journal, 0, 0,
JBD2_FEATURE_INCOMPAT_64BIT)) {
ext4_msg(sb, KERN_ERR, "Failed to set 64-bit journal feature");
- goto failed_mount4;
+ goto failed_mount_wq;
}
if (test_opt(sb, JOURNAL_ASYNC_COMMIT)) {
@@ -2818,7 +2896,7 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
(sbi->s_journal, 0, 0, JBD2_FEATURE_INCOMPAT_REVOKE)) {
ext4_msg(sb, KERN_ERR, "Journal does not support "
"requested data journaling mode");
- goto failed_mount4;
+ goto failed_mount_wq;
}
default:
break;
@@ -2826,13 +2904,17 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
set_task_ioprio(sbi->s_journal->j_task, journal_ioprio);
no_journal:
-
if (test_opt(sb, NOBH)) {
if (!(test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_WRITEBACK_DATA)) {
ext4_msg(sb, KERN_WARNING, "Ignoring nobh option - "
"its supported only with writeback mode");
clear_opt(sbi->s_mount_opt, NOBH);
}
+ if (test_opt(sb, DIOREAD_NOLOCK)) {
+ ext4_msg(sb, KERN_WARNING, "dioread_nolock option is "
+ "not supported with nobh mode");
+ goto failed_mount_wq;
+ }
}
EXT4_SB(sb)->dio_unwritten_wq = create_workqueue("ext4-dio-unwritten");
if (!EXT4_SB(sb)->dio_unwritten_wq) {
@@ -2897,6 +2979,18 @@ no_journal:
"requested data journaling mode");
clear_opt(sbi->s_mount_opt, DELALLOC);
}
+ if (test_opt(sb, DIOREAD_NOLOCK)) {
+ if (test_opt(sb, DATA_FLAGS) == EXT4_MOUNT_JOURNAL_DATA) {
+ ext4_msg(sb, KERN_WARNING, "Ignoring dioread_nolock "
+ "option - requested data journaling mode");
+ clear_opt(sbi->s_mount_opt, DIOREAD_NOLOCK);
+ }
+ if (sb->s_blocksize < PAGE_SIZE) {
+ ext4_msg(sb, KERN_WARNING, "Ignoring dioread_nolock "
+ "option - block size is too small");
+ clear_opt(sbi->s_mount_opt, DIOREAD_NOLOCK);
+ }
+ }
err = ext4_setup_system_zone(sb);
if (err) {
@@ -3360,10 +3454,9 @@ static void ext4_clear_journal_err(struct super_block *sb,
char nbuf[16];
errstr = ext4_decode_error(sb, j_errno, nbuf);
- ext4_warning(sb, __func__, "Filesystem error recorded "
+ ext4_warning(sb, "Filesystem error recorded "
"from previous mount: %s", errstr);
- ext4_warning(sb, __func__, "Marking fs in need of "
- "filesystem check.");
+ ext4_warning(sb, "Marking fs in need of filesystem check.");
EXT4_SB(sb)->s_mount_state |= EXT4_ERROR_FS;
es->s_state |= cpu_to_le16(EXT4_ERROR_FS);
@@ -3514,7 +3607,7 @@ static int ext4_remount(struct super_block *sb, int *flags, char *data)
ext4_abort(sb, __func__, "Abort forced by user");
sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
- ((sbi->s_mount_opt & EXT4_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);
+ (test_opt(sb, POSIX_ACL) ? MS_POSIXACL : 0);
es = sbi->s_es;
@@ -3917,9 +4010,7 @@ static ssize_t ext4_quota_write(struct super_block *sb, int type,
ext4_lblk_t blk = off >> EXT4_BLOCK_SIZE_BITS(sb);
int err = 0;
int offset = off & (sb->s_blocksize - 1);
- int tocopy;
int journal_quota = EXT4_SB(sb)->s_qf_names[type] != NULL;
- size_t towrite = len;
struct buffer_head *bh;
handle_t *handle = journal_current_handle();
@@ -3929,52 +4020,53 @@ static ssize_t ext4_quota_write(struct super_block *sb, int type,
(unsigned long long)off, (unsigned long long)len);
return -EIO;
}
+ /*
+ * Since we account only one data block in transaction credits,
+ * then it is impossible to cross a block boundary.
+ */
+ if (sb->s_blocksize - offset < len) {
+ ext4_msg(sb, KERN_WARNING, "Quota write (off=%llu, len=%llu)"
+ " cancelled because not block aligned",
+ (unsigned long long)off, (unsigned long long)len);
+ return -EIO;
+ }
+
mutex_lock_nested(&inode->i_mutex, I_MUTEX_QUOTA);
- while (towrite > 0) {
- tocopy = sb->s_blocksize - offset < towrite ?
- sb->s_blocksize - offset : towrite;
- bh = ext4_bread(handle, inode, blk, 1, &err);
- if (!bh)
+ bh = ext4_bread(handle, inode, blk, 1, &err);
+ if (!bh)
+ goto out;
+ if (journal_quota) {
+ err = ext4_journal_get_write_access(handle, bh);
+ if (err) {
+ brelse(bh);
goto out;
- if (journal_quota) {
- err = ext4_journal_get_write_access(handle, bh);
- if (err) {
- brelse(bh);
- goto out;
- }
}
- lock_buffer(bh);
- memcpy(bh->b_data+offset, data, tocopy);
- flush_dcache_page(bh->b_page);
- unlock_buffer(bh);
- if (journal_quota)
- err = ext4_handle_dirty_metadata(handle, NULL, bh);
- else {
- /* Always do at least ordered writes for quotas */
- err = ext4_jbd2_file_inode(handle, inode);
- mark_buffer_dirty(bh);
- }
- brelse(bh);
- if (err)
- goto out;
- offset = 0;
- towrite -= tocopy;
- data += tocopy;
- blk++;
}
+ lock_buffer(bh);
+ memcpy(bh->b_data+offset, data, len);
+ flush_dcache_page(bh->b_page);
+ unlock_buffer(bh);
+ if (journal_quota)
+ err = ext4_handle_dirty_metadata(handle, NULL, bh);
+ else {
+ /* Always do at least ordered writes for quotas */
+ err = ext4_jbd2_file_inode(handle, inode);
+ mark_buffer_dirty(bh);
+ }
+ brelse(bh);
out:
- if (len == towrite) {
+ if (err) {
mutex_unlock(&inode->i_mutex);
return err;
}
- if (inode->i_size < off+len-towrite) {
- i_size_write(inode, off+len-towrite);
+ if (inode->i_size < off + len) {
+ i_size_write(inode, off + len);
EXT4_I(inode)->i_disksize = inode->i_size;
}
inode->i_mtime = inode->i_ctime = CURRENT_TIME;
ext4_mark_inode_dirty(handle, inode);
mutex_unlock(&inode->i_mutex);
- return len - towrite;
+ return len;
}
#endif
diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c
index f3a2f7ed45aa..efc16a4b7ceb 100644
--- a/fs/ext4/xattr.c
+++ b/fs/ext4/xattr.c
@@ -227,7 +227,8 @@ ext4_xattr_block_get(struct inode *inode, int name_index, const char *name,
ea_bdebug(bh, "b_count=%d, refcount=%d",
atomic_read(&(bh->b_count)), le32_to_cpu(BHDR(bh)->h_refcount));
if (ext4_xattr_check_block(bh)) {
-bad_block: ext4_error(inode->i_sb, __func__,
+bad_block:
+ ext4_error(inode->i_sb,
"inode %lu: bad block %llu", inode->i_ino,
EXT4_I(inode)->i_file_acl);
error = -EIO;
@@ -267,7 +268,7 @@ ext4_xattr_ibody_get(struct inode *inode, int name_index, const char *name,
void *end;
int error;
- if (!(EXT4_I(inode)->i_state & EXT4_STATE_XATTR))
+ if (!ext4_test_inode_state(inode, EXT4_STATE_XATTR))
return -ENODATA;
error = ext4_get_inode_loc(inode, &iloc);
if (error)
@@ -371,7 +372,7 @@ ext4_xattr_block_list(struct dentry *dentry, char *buffer, size_t buffer_size)
ea_bdebug(bh, "b_count=%d, refcount=%d",
atomic_read(&(bh->b_count)), le32_to_cpu(BHDR(bh)->h_refcount));
if (ext4_xattr_check_block(bh)) {
- ext4_error(inode->i_sb, __func__,
+ ext4_error(inode->i_sb,
"inode %lu: bad block %llu", inode->i_ino,
EXT4_I(inode)->i_file_acl);
error = -EIO;
@@ -396,7 +397,7 @@ ext4_xattr_ibody_list(struct dentry *dentry, char *buffer, size_t buffer_size)
void *end;
int error;
- if (!(EXT4_I(inode)->i_state & EXT4_STATE_XATTR))
+ if (!ext4_test_inode_state(inode, EXT4_STATE_XATTR))
return 0;
error = ext4_get_inode_loc(inode, &iloc);
if (error)
@@ -665,9 +666,8 @@ ext4_xattr_block_find(struct inode *inode, struct ext4_xattr_info *i,
atomic_read(&(bs->bh->b_count)),
le32_to_cpu(BHDR(bs->bh)->h_refcount));
if (ext4_xattr_check_block(bs->bh)) {
- ext4_error(sb, __func__,
- "inode %lu: bad block %llu", inode->i_ino,
- EXT4_I(inode)->i_file_acl);
+ ext4_error(sb, "inode %lu: bad block %llu",
+ inode->i_ino, EXT4_I(inode)->i_file_acl);
error = -EIO;
goto cleanup;
}
@@ -880,9 +880,8 @@ cleanup_dquot:
goto cleanup;
bad_block:
- ext4_error(inode->i_sb, __func__,
- "inode %lu: bad block %llu", inode->i_ino,
- EXT4_I(inode)->i_file_acl);
+ ext4_error(inode->i_sb, "inode %lu: bad block %llu",
+ inode->i_ino, EXT4_I(inode)->i_file_acl);
goto cleanup;
#undef header
@@ -908,7 +907,7 @@ ext4_xattr_ibody_find(struct inode *inode, struct ext4_xattr_info *i,
is->s.base = is->s.first = IFIRST(header);
is->s.here = is->s.first;
is->s.end = (void *)raw_inode + EXT4_SB(inode->i_sb)->s_inode_size;
- if (EXT4_I(inode)->i_state & EXT4_STATE_XATTR) {
+ if (ext4_test_inode_state(inode, EXT4_STATE_XATTR)) {
error = ext4_xattr_check_names(IFIRST(header), is->s.end);
if (error)
return error;
@@ -940,10 +939,10 @@ ext4_xattr_ibody_set(handle_t *handle, struct inode *inode,
header = IHDR(inode, ext4_raw_inode(&is->iloc));
if (!IS_LAST_ENTRY(s->first)) {
header->h_magic = cpu_to_le32(EXT4_XATTR_MAGIC);
- EXT4_I(inode)->i_state |= EXT4_STATE_XATTR;
+ ext4_set_inode_state(inode, EXT4_STATE_XATTR);
} else {
header->h_magic = cpu_to_le32(0);
- EXT4_I(inode)->i_state &= ~EXT4_STATE_XATTR;
+ ext4_clear_inode_state(inode, EXT4_STATE_XATTR);
}
return 0;
}
@@ -986,8 +985,8 @@ ext4_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index,
if (strlen(name) > 255)
return -ERANGE;
down_write(&EXT4_I(inode)->xattr_sem);
- no_expand = EXT4_I(inode)->i_state & EXT4_STATE_NO_EXPAND;
- EXT4_I(inode)->i_state |= EXT4_STATE_NO_EXPAND;
+ no_expand = ext4_test_inode_state(inode, EXT4_STATE_NO_EXPAND);
+ ext4_set_inode_state(inode, EXT4_STATE_NO_EXPAND);
error = ext4_get_inode_loc(inode, &is.iloc);
if (error)
@@ -997,10 +996,10 @@ ext4_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index,
if (error)
goto cleanup;
- if (EXT4_I(inode)->i_state & EXT4_STATE_NEW) {
+ if (ext4_test_inode_state(inode, EXT4_STATE_NEW)) {
struct ext4_inode *raw_inode = ext4_raw_inode(&is.iloc);
memset(raw_inode, 0, EXT4_SB(inode->i_sb)->s_inode_size);
- EXT4_I(inode)->i_state &= ~EXT4_STATE_NEW;
+ ext4_clear_inode_state(inode, EXT4_STATE_NEW);
}
error = ext4_xattr_ibody_find(inode, &i, &is);
@@ -1052,7 +1051,7 @@ ext4_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index,
ext4_xattr_update_super_block(handle, inode->i_sb);
inode->i_ctime = ext4_current_time(inode);
if (!value)
- EXT4_I(inode)->i_state &= ~EXT4_STATE_NO_EXPAND;
+ ext4_clear_inode_state(inode, EXT4_STATE_NO_EXPAND);
error = ext4_mark_iloc_dirty(handle, inode, &is.iloc);
/*
* The bh is consumed by ext4_mark_iloc_dirty, even with
@@ -1067,7 +1066,7 @@ cleanup:
brelse(is.iloc.bh);
brelse(bs.bh);
if (no_expand == 0)
- EXT4_I(inode)->i_state &= ~EXT4_STATE_NO_EXPAND;
+ ext4_clear_inode_state(inode, EXT4_STATE_NO_EXPAND);
up_write(&EXT4_I(inode)->xattr_sem);
return error;
}
@@ -1195,9 +1194,8 @@ retry:
if (!bh)
goto cleanup;
if (ext4_xattr_check_block(bh)) {
- ext4_error(inode->i_sb, __func__,
- "inode %lu: bad block %llu", inode->i_ino,
- EXT4_I(inode)->i_file_acl);
+ ext4_error(inode->i_sb, "inode %lu: bad block %llu",
+ inode->i_ino, EXT4_I(inode)->i_file_acl);
error = -EIO;
goto cleanup;
}
@@ -1302,6 +1300,8 @@ retry:
/* Remove the chosen entry from the inode */
error = ext4_xattr_ibody_set(handle, inode, &i, is);
+ if (error)
+ goto cleanup;
entry = IFIRST(header);
if (entry_size + EXT4_XATTR_SIZE(size) >= new_extra_isize)
@@ -1372,16 +1372,14 @@ ext4_xattr_delete_inode(handle_t *handle, struct inode *inode)
goto cleanup;
bh = sb_bread(inode->i_sb, EXT4_I(inode)->i_file_acl);
if (!bh) {
- ext4_error(inode->i_sb, __func__,
- "inode %lu: block %llu read error", inode->i_ino,
- EXT4_I(inode)->i_file_acl);
+ ext4_error(inode->i_sb, "inode %lu: block %llu read error",
+ inode->i_ino, EXT4_I(inode)->i_file_acl);
goto cleanup;
}
if (BHDR(bh)->h_magic != cpu_to_le32(EXT4_XATTR_MAGIC) ||
BHDR(bh)->h_blocks != cpu_to_le32(1)) {
- ext4_error(inode->i_sb, __func__,
- "inode %lu: bad block %llu", inode->i_ino,
- EXT4_I(inode)->i_file_acl);
+ ext4_error(inode->i_sb, "inode %lu: bad block %llu",
+ inode->i_ino, EXT4_I(inode)->i_file_acl);
goto cleanup;
}
ext4_xattr_release_block(handle, inode, bh);
@@ -1506,7 +1504,7 @@ again:
}
bh = sb_bread(inode->i_sb, ce->e_block);
if (!bh) {
- ext4_error(inode->i_sb, __func__,
+ ext4_error(inode->i_sb,
"inode %lu: block %lu read error",
inode->i_ino, (unsigned long) ce->e_block);
} else if (le32_to_cpu(BHDR(bh)->h_refcount) >=
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 14da530b05ca..fbeecdc194dc 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -577,7 +577,7 @@ static inline loff_t fat_i_pos_read(struct msdos_sb_info *sbi,
return i_pos;
}
-static int fat_write_inode(struct inode *inode, int wait)
+static int __fat_write_inode(struct inode *inode, int wait)
{
struct super_block *sb = inode->i_sb;
struct msdos_sb_info *sbi = MSDOS_SB(sb);
@@ -634,9 +634,14 @@ retry:
return err;
}
+static int fat_write_inode(struct inode *inode, struct writeback_control *wbc)
+{
+ return __fat_write_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
+}
+
int fat_sync_inode(struct inode *inode)
{
- return fat_write_inode(inode, 1);
+ return __fat_write_inode(inode, 1);
}
EXPORT_SYMBOL_GPL(fat_sync_inode);
diff --git a/fs/file.c b/fs/file.c
index 87e129030ab1..38039af67663 100644
--- a/fs/file.c
+++ b/fs/file.c
@@ -478,7 +478,7 @@ repeat:
error = fd;
#if 1
/* Sanity check */
- if (rcu_dereference(fdt->fd[fd]) != NULL) {
+ if (rcu_dereference_raw(fdt->fd[fd]) != NULL) {
printk(KERN_WARNING "alloc_fd: slot %d not NULL!\n", fd);
rcu_assign_pointer(fdt->fd[fd], NULL);
}
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 1a7c42c64ff4..76fc4d594acb 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -381,10 +381,10 @@ static void queue_io(struct bdi_writeback *wb, unsigned long *older_than_this)
move_expired_inodes(&wb->b_dirty, &wb->b_io, older_than_this);
}
-static int write_inode(struct inode *inode, int sync)
+static int write_inode(struct inode *inode, struct writeback_control *wbc)
{
if (inode->i_sb->s_op->write_inode && !is_bad_inode(inode))
- return inode->i_sb->s_op->write_inode(inode, sync);
+ return inode->i_sb->s_op->write_inode(inode, wbc);
return 0;
}
@@ -421,7 +421,6 @@ static int
writeback_single_inode(struct inode *inode, struct writeback_control *wbc)
{
struct address_space *mapping = inode->i_mapping;
- int wait = wbc->sync_mode == WB_SYNC_ALL;
unsigned dirty;
int ret;
@@ -439,7 +438,7 @@ writeback_single_inode(struct inode *inode, struct writeback_control *wbc)
* We'll have another go at writing back this inode when we
* completed a full scan of b_io.
*/
- if (!wait) {
+ if (wbc->sync_mode != WB_SYNC_ALL) {
requeue_io(inode);
return 0;
}
@@ -461,15 +460,20 @@ writeback_single_inode(struct inode *inode, struct writeback_control *wbc)
ret = do_writepages(mapping, wbc);
- /* Don't write the inode if only I_DIRTY_PAGES was set */
- if (dirty & (I_DIRTY_SYNC | I_DIRTY_DATASYNC)) {
- int err = write_inode(inode, wait);
+ /*
+ * Make sure to wait on the data before writing out the metadata.
+ * This is important for filesystems that modify metadata on data
+ * I/O completion.
+ */
+ if (wbc->sync_mode == WB_SYNC_ALL) {
+ int err = filemap_fdatawait(mapping);
if (ret == 0)
ret = err;
}
- if (wait) {
- int err = filemap_fdatawait(mapping);
+ /* Don't write the inode if only I_DIRTY_PAGES was set */
+ if (dirty & (I_DIRTY_SYNC | I_DIRTY_DATASYNC)) {
+ int err = write_inode(inode, wbc);
if (ret == 0)
ret = err;
}
diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c
index 51d9e33d634f..eb7e9423691f 100644
--- a/fs/fuse/dev.c
+++ b/fs/fuse/dev.c
@@ -865,13 +865,10 @@ static int fuse_notify_inval_inode(struct fuse_conn *fc, unsigned int size,
down_read(&fc->killsb);
err = -ENOENT;
- if (!fc->sb)
- goto err_unlock;
-
- err = fuse_reverse_inval_inode(fc->sb, outarg.ino,
- outarg.off, outarg.len);
-
-err_unlock:
+ if (fc->sb) {
+ err = fuse_reverse_inval_inode(fc->sb, outarg.ino,
+ outarg.off, outarg.len);
+ }
up_read(&fc->killsb);
return err;
@@ -884,10 +881,15 @@ static int fuse_notify_inval_entry(struct fuse_conn *fc, unsigned int size,
struct fuse_copy_state *cs)
{
struct fuse_notify_inval_entry_out outarg;
- int err = -EINVAL;
- char buf[FUSE_NAME_MAX+1];
+ int err = -ENOMEM;
+ char *buf;
struct qstr name;
+ buf = kzalloc(FUSE_NAME_MAX + 1, GFP_KERNEL);
+ if (!buf)
+ goto err;
+
+ err = -EINVAL;
if (size < sizeof(outarg))
goto err;
@@ -910,16 +912,14 @@ static int fuse_notify_inval_entry(struct fuse_conn *fc, unsigned int size,
down_read(&fc->killsb);
err = -ENOENT;
- if (!fc->sb)
- goto err_unlock;
-
- err = fuse_reverse_inval_entry(fc->sb, outarg.parent, &name);
-
-err_unlock:
+ if (fc->sb)
+ err = fuse_reverse_inval_entry(fc->sb, outarg.parent, &name);
up_read(&fc->killsb);
+ kfree(buf);
return err;
err:
+ kfree(buf);
fuse_copy_finish(cs);
return err;
}
diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c
index 7b8da9415267..0c1d0b82dcf1 100644
--- a/fs/gfs2/aops.c
+++ b/fs/gfs2/aops.c
@@ -1061,8 +1061,8 @@ out:
int gfs2_releasepage(struct page *page, gfp_t gfp_mask)
{
- struct inode *aspace = page->mapping->host;
- struct gfs2_sbd *sdp = aspace->i_sb->s_fs_info;
+ struct address_space *mapping = page->mapping;
+ struct gfs2_sbd *sdp = gfs2_mapping2sbd(mapping);
struct buffer_head *bh, *head;
struct gfs2_bufdata *bd;
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index 6d47379e794b..583e823307ae 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -541,7 +541,7 @@ static int gfs2_bmap_alloc(struct inode *inode, const sector_t lblock,
*ptr++ = cpu_to_be64(bn++);
break;
}
- } while (state != ALLOC_DATA);
+ } while ((state != ALLOC_DATA) || !dblock);
ip->i_height = height;
gfs2_add_inode_blocks(&ip->i_inode, alloced);
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index f42663325931..454d4b4eb36b 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -19,7 +19,6 @@
#include <linux/list.h>
#include <linux/wait.h>
#include <linux/module.h>
-#include <linux/rwsem.h>
#include <asm/uaccess.h>
#include <linux/seq_file.h>
#include <linux/debugfs.h>
@@ -60,7 +59,6 @@ static int __dump_glock(struct seq_file *seq, const struct gfs2_glock *gl);
#define GLOCK_BUG_ON(gl,x) do { if (unlikely(x)) { __dump_glock(NULL, gl); BUG(); } } while(0)
static void do_xmote(struct gfs2_glock *gl, struct gfs2_holder *gh, unsigned int target);
-static DECLARE_RWSEM(gfs2_umount_flush_sem);
static struct dentry *gfs2_root;
static struct workqueue_struct *glock_workqueue;
struct workqueue_struct *gfs2_delete_workqueue;
@@ -154,12 +152,14 @@ static unsigned int gl_hash(const struct gfs2_sbd *sdp,
static void glock_free(struct gfs2_glock *gl)
{
struct gfs2_sbd *sdp = gl->gl_sbd;
- struct inode *aspace = gl->gl_aspace;
+ struct address_space *mapping = gfs2_glock2aspace(gl);
+ struct kmem_cache *cachep = gfs2_glock_cachep;
- if (aspace)
- gfs2_aspace_put(aspace);
+ GLOCK_BUG_ON(gl, mapping && mapping->nrpages);
trace_gfs2_glock_put(gl);
- sdp->sd_lockstruct.ls_ops->lm_put_lock(gfs2_glock_cachep, gl);
+ if (mapping)
+ cachep = gfs2_glock_aspace_cachep;
+ sdp->sd_lockstruct.ls_ops->lm_put_lock(cachep, gl);
}
/**
@@ -712,7 +712,6 @@ static void glock_work_func(struct work_struct *work)
finish_xmote(gl, gl->gl_reply);
drop_ref = 1;
}
- down_read(&gfs2_umount_flush_sem);
spin_lock(&gl->gl_spin);
if (test_and_clear_bit(GLF_PENDING_DEMOTE, &gl->gl_flags) &&
gl->gl_state != LM_ST_UNLOCKED &&
@@ -725,7 +724,6 @@ static void glock_work_func(struct work_struct *work)
}
run_queue(gl, 0);
spin_unlock(&gl->gl_spin);
- up_read(&gfs2_umount_flush_sem);
if (!delay ||
queue_delayed_work(glock_workqueue, &gl->gl_work, delay) == 0)
gfs2_glock_put(gl);
@@ -750,10 +748,11 @@ int gfs2_glock_get(struct gfs2_sbd *sdp, u64 number,
const struct gfs2_glock_operations *glops, int create,
struct gfs2_glock **glp)
{
+ struct super_block *s = sdp->sd_vfs;
struct lm_lockname name = { .ln_number = number, .ln_type = glops->go_type };
struct gfs2_glock *gl, *tmp;
unsigned int hash = gl_hash(sdp, &name);
- int error;
+ struct address_space *mapping;
read_lock(gl_lock_addr(hash));
gl = search_bucket(hash, sdp, &name);
@@ -765,7 +764,10 @@ int gfs2_glock_get(struct gfs2_sbd *sdp, u64 number,
if (!create)
return -ENOENT;
- gl = kmem_cache_alloc(gfs2_glock_cachep, GFP_KERNEL);
+ if (glops->go_flags & GLOF_ASPACE)
+ gl = kmem_cache_alloc(gfs2_glock_aspace_cachep, GFP_KERNEL);
+ else
+ gl = kmem_cache_alloc(gfs2_glock_cachep, GFP_KERNEL);
if (!gl)
return -ENOMEM;
@@ -784,18 +786,18 @@ int gfs2_glock_get(struct gfs2_sbd *sdp, u64 number,
gl->gl_tchange = jiffies;
gl->gl_object = NULL;
gl->gl_sbd = sdp;
- gl->gl_aspace = NULL;
INIT_DELAYED_WORK(&gl->gl_work, glock_work_func);
INIT_WORK(&gl->gl_delete, delete_work_func);
- /* If this glock protects actual on-disk data or metadata blocks,
- create a VFS inode to manage the pages/buffers holding them. */
- if (glops == &gfs2_inode_glops || glops == &gfs2_rgrp_glops) {
- gl->gl_aspace = gfs2_aspace_get(sdp);
- if (!gl->gl_aspace) {
- error = -ENOMEM;
- goto fail;
- }
+ mapping = gfs2_glock2aspace(gl);
+ if (mapping) {
+ mapping->a_ops = &gfs2_meta_aops;
+ mapping->host = s->s_bdev->bd_inode;
+ mapping->flags = 0;
+ mapping_set_gfp_mask(mapping, GFP_NOFS);
+ mapping->assoc_mapping = NULL;
+ mapping->backing_dev_info = s->s_bdi;
+ mapping->writeback_index = 0;
}
write_lock(gl_lock_addr(hash));
@@ -812,10 +814,6 @@ int gfs2_glock_get(struct gfs2_sbd *sdp, u64 number,
*glp = gl;
return 0;
-
-fail:
- kmem_cache_free(gfs2_glock_cachep, gl);
- return error;
}
/**
@@ -1510,35 +1508,10 @@ void gfs2_glock_thaw(struct gfs2_sbd *sdp)
void gfs2_gl_hash_clear(struct gfs2_sbd *sdp)
{
- unsigned long t;
unsigned int x;
- int cont;
- t = jiffies;
-
- for (;;) {
- cont = 0;
- for (x = 0; x < GFS2_GL_HASH_SIZE; x++) {
- if (examine_bucket(clear_glock, sdp, x))
- cont = 1;
- }
-
- if (!cont)
- break;
-
- if (time_after_eq(jiffies,
- t + gfs2_tune_get(sdp, gt_stall_secs) * HZ)) {
- fs_warn(sdp, "Unmount seems to be stalled. "
- "Dumping lock state...\n");
- gfs2_dump_lockstate(sdp);
- t = jiffies;
- }
-
- down_write(&gfs2_umount_flush_sem);
- invalidate_inodes(sdp->sd_vfs);
- up_write(&gfs2_umount_flush_sem);
- msleep(10);
- }
+ for (x = 0; x < GFS2_GL_HASH_SIZE; x++)
+ examine_bucket(clear_glock, sdp, x);
flush_workqueue(glock_workqueue);
wait_event(sdp->sd_glock_wait, atomic_read(&sdp->sd_glock_disposal) == 0);
gfs2_dump_lockstate(sdp);
@@ -1685,7 +1658,7 @@ static int __dump_glock(struct seq_file *seq, const struct gfs2_glock *gl)
dtime *= 1000000/HZ; /* demote time in uSec */
if (!test_bit(GLF_DEMOTE, &gl->gl_flags))
dtime = 0;
- gfs2_print_dbg(seq, "G: s:%s n:%u/%llu f:%s t:%s d:%s/%llu a:%d r:%d\n",
+ gfs2_print_dbg(seq, "G: s:%s n:%u/%llx f:%s t:%s d:%s/%llu a:%d r:%d\n",
state2str(gl->gl_state),
gl->gl_name.ln_type,
(unsigned long long)gl->gl_name.ln_number,
diff --git a/fs/gfs2/glock.h b/fs/gfs2/glock.h
index c0262faf4725..2bda1911b156 100644
--- a/fs/gfs2/glock.h
+++ b/fs/gfs2/glock.h
@@ -180,6 +180,13 @@ static inline int gfs2_glock_is_held_shrd(struct gfs2_glock *gl)
return gl->gl_state == LM_ST_SHARED;
}
+static inline struct address_space *gfs2_glock2aspace(struct gfs2_glock *gl)
+{
+ if (gl->gl_ops->go_flags & GLOF_ASPACE)
+ return (struct address_space *)(gl + 1);
+ return NULL;
+}
+
int gfs2_glock_get(struct gfs2_sbd *sdp,
u64 number, const struct gfs2_glock_operations *glops,
int create, struct gfs2_glock **glp);
diff --git a/fs/gfs2/glops.c b/fs/gfs2/glops.c
index 78554acc0605..38e3749d476c 100644
--- a/fs/gfs2/glops.c
+++ b/fs/gfs2/glops.c
@@ -87,7 +87,7 @@ static void gfs2_ail_empty_gl(struct gfs2_glock *gl)
static void rgrp_go_sync(struct gfs2_glock *gl)
{
- struct address_space *metamapping = gl->gl_aspace->i_mapping;
+ struct address_space *metamapping = gfs2_glock2aspace(gl);
int error;
if (!test_and_clear_bit(GLF_DIRTY, &gl->gl_flags))
@@ -113,7 +113,7 @@ static void rgrp_go_sync(struct gfs2_glock *gl)
static void rgrp_go_inval(struct gfs2_glock *gl, int flags)
{
- struct address_space *mapping = gl->gl_aspace->i_mapping;
+ struct address_space *mapping = gfs2_glock2aspace(gl);
BUG_ON(!(flags & DIO_METADATA));
gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count));
@@ -134,7 +134,7 @@ static void rgrp_go_inval(struct gfs2_glock *gl, int flags)
static void inode_go_sync(struct gfs2_glock *gl)
{
struct gfs2_inode *ip = gl->gl_object;
- struct address_space *metamapping = gl->gl_aspace->i_mapping;
+ struct address_space *metamapping = gfs2_glock2aspace(gl);
int error;
if (ip && !S_ISREG(ip->i_inode.i_mode))
@@ -183,7 +183,7 @@ static void inode_go_inval(struct gfs2_glock *gl, int flags)
gfs2_assert_withdraw(gl->gl_sbd, !atomic_read(&gl->gl_ail_count));
if (flags & DIO_METADATA) {
- struct address_space *mapping = gl->gl_aspace->i_mapping;
+ struct address_space *mapping = gfs2_glock2aspace(gl);
truncate_inode_pages(mapping, 0);
if (ip) {
set_bit(GIF_INVALID, &ip->i_flags);
@@ -282,7 +282,8 @@ static int inode_go_dump(struct seq_file *seq, const struct gfs2_glock *gl)
static int rgrp_go_demote_ok(const struct gfs2_glock *gl)
{
- return !gl->gl_aspace->i_mapping->nrpages;
+ const struct address_space *mapping = (const struct address_space *)(gl + 1);
+ return !mapping->nrpages;
}
/**
@@ -387,8 +388,7 @@ static void iopen_go_callback(struct gfs2_glock *gl)
struct gfs2_inode *ip = (struct gfs2_inode *)gl->gl_object;
if (gl->gl_demote_state == LM_ST_UNLOCKED &&
- gl->gl_state == LM_ST_SHARED &&
- ip && test_bit(GIF_USER, &ip->i_flags)) {
+ gl->gl_state == LM_ST_SHARED && ip) {
gfs2_glock_hold(gl);
if (queue_work(gfs2_delete_workqueue, &gl->gl_delete) == 0)
gfs2_glock_put_nolock(gl);
@@ -407,6 +407,7 @@ const struct gfs2_glock_operations gfs2_inode_glops = {
.go_dump = inode_go_dump,
.go_type = LM_TYPE_INODE,
.go_min_hold_time = HZ / 5,
+ .go_flags = GLOF_ASPACE,
};
const struct gfs2_glock_operations gfs2_rgrp_glops = {
@@ -418,6 +419,7 @@ const struct gfs2_glock_operations gfs2_rgrp_glops = {
.go_dump = gfs2_rgrp_dump,
.go_type = LM_TYPE_RGRP,
.go_min_hold_time = HZ / 5,
+ .go_flags = GLOF_ASPACE,
};
const struct gfs2_glock_operations gfs2_trans_glops = {
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index bc0ad158e6b4..b8025e51cabf 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -162,6 +162,8 @@ struct gfs2_glock_operations {
void (*go_callback) (struct gfs2_glock *gl);
const int go_type;
const unsigned long go_min_hold_time;
+ const unsigned long go_flags;
+#define GLOF_ASPACE 1
};
enum {
@@ -225,7 +227,6 @@ struct gfs2_glock {
struct gfs2_sbd *gl_sbd;
- struct inode *gl_aspace;
struct list_head gl_ail_list;
atomic_t gl_ail_count;
struct delayed_work gl_work;
@@ -258,7 +259,6 @@ enum {
GIF_INVALID = 0,
GIF_QD_LOCKED = 1,
GIF_SW_PAGED = 3,
- GIF_USER = 4, /* user inode, not metadata addr space */
};
@@ -451,7 +451,6 @@ struct gfs2_tune {
unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
unsigned int gt_new_files_jdata;
unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
- unsigned int gt_stall_secs; /* Detects trouble! */
unsigned int gt_complain_secs;
unsigned int gt_statfs_quantum;
unsigned int gt_statfs_slow;
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 6e220f4eee7d..b1bf2694fb2b 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -45,7 +45,7 @@ static int iget_test(struct inode *inode, void *opaque)
struct gfs2_inode *ip = GFS2_I(inode);
u64 *no_addr = opaque;
- if (ip->i_no_addr == *no_addr && test_bit(GIF_USER, &ip->i_flags))
+ if (ip->i_no_addr == *no_addr)
return 1;
return 0;
@@ -58,7 +58,6 @@ static int iget_set(struct inode *inode, void *opaque)
inode->i_ino = (unsigned long)*no_addr;
ip->i_no_addr = *no_addr;
- set_bit(GIF_USER, &ip->i_flags);
return 0;
}
@@ -84,7 +83,7 @@ static int iget_skip_test(struct inode *inode, void *opaque)
struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_skip_data *data = opaque;
- if (ip->i_no_addr == data->no_addr && test_bit(GIF_USER, &ip->i_flags)){
+ if (ip->i_no_addr == data->no_addr) {
if (inode->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE)){
data->skipped = 1;
return 0;
@@ -103,7 +102,6 @@ static int iget_skip_set(struct inode *inode, void *opaque)
return 1;
inode->i_ino = (unsigned long)(data->no_addr);
ip->i_no_addr = data->no_addr;
- set_bit(GIF_USER, &ip->i_flags);
return 0;
}
diff --git a/fs/gfs2/lock_dlm.c b/fs/gfs2/lock_dlm.c
index 0e5e0e7022e5..569b46240f61 100644
--- a/fs/gfs2/lock_dlm.c
+++ b/fs/gfs2/lock_dlm.c
@@ -30,7 +30,10 @@ static void gdlm_ast(void *arg)
switch (gl->gl_lksb.sb_status) {
case -DLM_EUNLOCK: /* Unlocked, so glock can be freed */
- kmem_cache_free(gfs2_glock_cachep, gl);
+ if (gl->gl_ops->go_flags & GLOF_ASPACE)
+ kmem_cache_free(gfs2_glock_aspace_cachep, gl);
+ else
+ kmem_cache_free(gfs2_glock_cachep, gl);
if (atomic_dec_and_test(&sdp->sd_glock_disposal))
wake_up(&sdp->sd_glock_wait);
return;
diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c
index de97632ba32f..adc260fbea90 100644
--- a/fs/gfs2/lops.c
+++ b/fs/gfs2/lops.c
@@ -528,9 +528,9 @@ static void databuf_lo_add(struct gfs2_sbd *sdp, struct gfs2_log_element *le)
gfs2_pin(sdp, bd->bd_bh);
tr->tr_num_databuf_new++;
sdp->sd_log_num_databuf++;
- list_add(&le->le_list, &sdp->sd_log_le_databuf);
+ list_add_tail(&le->le_list, &sdp->sd_log_le_databuf);
} else {
- list_add(&le->le_list, &sdp->sd_log_le_ordered);
+ list_add_tail(&le->le_list, &sdp->sd_log_le_ordered);
}
out:
gfs2_log_unlock(sdp);
diff --git a/fs/gfs2/main.c b/fs/gfs2/main.c
index 5b31f7741a8f..a88fadc704bb 100644
--- a/fs/gfs2/main.c
+++ b/fs/gfs2/main.c
@@ -52,6 +52,22 @@ static void gfs2_init_glock_once(void *foo)
atomic_set(&gl->gl_ail_count, 0);
}
+static void gfs2_init_gl_aspace_once(void *foo)
+{
+ struct gfs2_glock *gl = foo;
+ struct address_space *mapping = (struct address_space *)(gl + 1);
+
+ gfs2_init_glock_once(gl);
+ memset(mapping, 0, sizeof(*mapping));
+ INIT_RADIX_TREE(&mapping->page_tree, GFP_ATOMIC);
+ spin_lock_init(&mapping->tree_lock);
+ spin_lock_init(&mapping->i_mmap_lock);
+ INIT_LIST_HEAD(&mapping->private_list);
+ spin_lock_init(&mapping->private_lock);
+ INIT_RAW_PRIO_TREE_ROOT(&mapping->i_mmap);
+ INIT_LIST_HEAD(&mapping->i_mmap_nonlinear);
+}
+
/**
* init_gfs2_fs - Register GFS2 as a filesystem
*
@@ -78,6 +94,14 @@ static int __init init_gfs2_fs(void)
if (!gfs2_glock_cachep)
goto fail;
+ gfs2_glock_aspace_cachep = kmem_cache_create("gfs2_glock (aspace)",
+ sizeof(struct gfs2_glock) +
+ sizeof(struct address_space),
+ 0, 0, gfs2_init_gl_aspace_once);
+
+ if (!gfs2_glock_aspace_cachep)
+ goto fail;
+
gfs2_inode_cachep = kmem_cache_create("gfs2_inode",
sizeof(struct gfs2_inode),
0, SLAB_RECLAIM_ACCOUNT|
@@ -144,6 +168,9 @@ fail:
if (gfs2_inode_cachep)
kmem_cache_destroy(gfs2_inode_cachep);
+ if (gfs2_glock_aspace_cachep)
+ kmem_cache_destroy(gfs2_glock_aspace_cachep);
+
if (gfs2_glock_cachep)
kmem_cache_destroy(gfs2_glock_cachep);
@@ -169,6 +196,7 @@ static void __exit exit_gfs2_fs(void)
kmem_cache_destroy(gfs2_rgrpd_cachep);
kmem_cache_destroy(gfs2_bufdata_cachep);
kmem_cache_destroy(gfs2_inode_cachep);
+ kmem_cache_destroy(gfs2_glock_aspace_cachep);
kmem_cache_destroy(gfs2_glock_cachep);
gfs2_sys_uninit();
diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c
index 6f68a5f18eb8..0bb12c80937a 100644
--- a/fs/gfs2/meta_io.c
+++ b/fs/gfs2/meta_io.c
@@ -93,49 +93,13 @@ static int gfs2_aspace_writepage(struct page *page, struct writeback_control *wb
return err;
}
-static const struct address_space_operations aspace_aops = {
+const struct address_space_operations gfs2_meta_aops = {
.writepage = gfs2_aspace_writepage,
.releasepage = gfs2_releasepage,
.sync_page = block_sync_page,
};
/**
- * gfs2_aspace_get - Create and initialize a struct inode structure
- * @sdp: the filesystem the aspace is in
- *
- * Right now a struct inode is just a struct inode. Maybe Linux
- * will supply a more lightweight address space construct (that works)
- * in the future.
- *
- * Make sure pages/buffers in this aspace aren't in high memory.
- *
- * Returns: the aspace
- */
-
-struct inode *gfs2_aspace_get(struct gfs2_sbd *sdp)
-{
- struct inode *aspace;
- struct gfs2_inode *ip;
-
- aspace = new_inode(sdp->sd_vfs);
- if (aspace) {
- mapping_set_gfp_mask(aspace->i_mapping, GFP_NOFS);
- aspace->i_mapping->a_ops = &aspace_aops;
- aspace->i_size = MAX_LFS_FILESIZE;
- ip = GFS2_I(aspace);
- clear_bit(GIF_USER, &ip->i_flags);
- insert_inode_hash(aspace);
- }
- return aspace;
-}
-
-void gfs2_aspace_put(struct inode *aspace)
-{
- remove_inode_hash(aspace);
- iput(aspace);
-}
-
-/**
* gfs2_meta_sync - Sync all buffers associated with a glock
* @gl: The glock
*
@@ -143,7 +107,7 @@ void gfs2_aspace_put(struct inode *aspace)
void gfs2_meta_sync(struct gfs2_glock *gl)
{
- struct address_space *mapping = gl->gl_aspace->i_mapping;
+ struct address_space *mapping = gfs2_glock2aspace(gl);
int error;
filemap_fdatawrite(mapping);
@@ -164,7 +128,7 @@ void gfs2_meta_sync(struct gfs2_glock *gl)
struct buffer_head *gfs2_getbuf(struct gfs2_glock *gl, u64 blkno, int create)
{
- struct address_space *mapping = gl->gl_aspace->i_mapping;
+ struct address_space *mapping = gfs2_glock2aspace(gl);
struct gfs2_sbd *sdp = gl->gl_sbd;
struct page *page;
struct buffer_head *bh;
@@ -344,8 +308,10 @@ void gfs2_attach_bufdata(struct gfs2_glock *gl, struct buffer_head *bh,
void gfs2_remove_from_journal(struct buffer_head *bh, struct gfs2_trans *tr, int meta)
{
- struct gfs2_sbd *sdp = GFS2_SB(bh->b_page->mapping->host);
+ struct address_space *mapping = bh->b_page->mapping;
+ struct gfs2_sbd *sdp = gfs2_mapping2sbd(mapping);
struct gfs2_bufdata *bd = bh->b_private;
+
if (test_clear_buffer_pinned(bh)) {
list_del_init(&bd->bd_le.le_list);
if (meta) {
diff --git a/fs/gfs2/meta_io.h b/fs/gfs2/meta_io.h
index de270c2f9b63..6a1d9ba16411 100644
--- a/fs/gfs2/meta_io.h
+++ b/fs/gfs2/meta_io.h
@@ -37,8 +37,16 @@ static inline void gfs2_buffer_copy_tail(struct buffer_head *to_bh,
0, from_head - to_head);
}
-struct inode *gfs2_aspace_get(struct gfs2_sbd *sdp);
-void gfs2_aspace_put(struct inode *aspace);
+extern const struct address_space_operations gfs2_meta_aops;
+
+static inline struct gfs2_sbd *gfs2_mapping2sbd(struct address_space *mapping)
+{
+ struct inode *inode = mapping->host;
+ if (mapping->a_ops == &gfs2_meta_aops)
+ return (((struct gfs2_glock *)mapping) - 1)->gl_sbd;
+ else
+ return inode->i_sb->s_fs_info;
+}
void gfs2_meta_sync(struct gfs2_glock *gl);
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index 8a102f731003..a054b526dc08 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -65,7 +65,6 @@ static void gfs2_tune_init(struct gfs2_tune *gt)
gt->gt_quota_scale_den = 1;
gt->gt_new_files_jdata = 0;
gt->gt_max_readahead = 1 << 18;
- gt->gt_stall_secs = 600;
gt->gt_complain_secs = 10;
}
@@ -725,7 +724,7 @@ static int init_journal(struct gfs2_sbd *sdp, int undo)
goto fail;
}
- error = -EINVAL;
+ error = -EUSERS;
if (!gfs2_jindex_size(sdp)) {
fs_err(sdp, "no journals!\n");
goto fail_jindex;
@@ -1241,10 +1240,9 @@ fail_sb:
fail_locking:
init_locking(sdp, &mount_gh, UNDO);
fail_lm:
+ invalidate_inodes(sb);
gfs2_gl_hash_clear(sdp);
gfs2_lm_unmount(sdp);
- while (invalidate_inodes(sb))
- yield();
fail_sys:
gfs2_sys_fs_del(sdp);
fail:
diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c
index 84350e1be66d..4e64352d49de 100644
--- a/fs/gfs2/ops_inode.c
+++ b/fs/gfs2/ops_inode.c
@@ -976,122 +976,62 @@ out:
}
/**
- * gfs2_readlinki - return the contents of a symlink
- * @ip: the symlink's inode
- * @buf: a pointer to the buffer to be filled
- * @len: a pointer to the length of @buf
+ * gfs2_follow_link - Follow a symbolic link
+ * @dentry: The dentry of the link
+ * @nd: Data that we pass to vfs_follow_link()
*
- * If @buf is too small, a piece of memory is kmalloc()ed and needs
- * to be freed by the caller.
+ * This can handle symlinks of any size.
*
- * Returns: errno
+ * Returns: 0 on success or error code
*/
-static int gfs2_readlinki(struct gfs2_inode *ip, char **buf, unsigned int *len)
+static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd)
{
+ struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
struct gfs2_holder i_gh;
struct buffer_head *dibh;
unsigned int x;
+ char *buf;
int error;
gfs2_holder_init(ip->i_gl, LM_ST_SHARED, 0, &i_gh);
error = gfs2_glock_nq(&i_gh);
if (error) {
gfs2_holder_uninit(&i_gh);
- return error;
+ nd_set_link(nd, ERR_PTR(error));
+ return NULL;
}
if (!ip->i_disksize) {
gfs2_consist_inode(ip);
- error = -EIO;
+ buf = ERR_PTR(-EIO);
goto out;
}
error = gfs2_meta_inode_buffer(ip, &dibh);
- if (error)
+ if (error) {
+ buf = ERR_PTR(error);
goto out;
-
- x = ip->i_disksize + 1;
- if (x > *len) {
- *buf = kmalloc(x, GFP_NOFS);
- if (!*buf) {
- error = -ENOMEM;
- goto out_brelse;
- }
}
- memcpy(*buf, dibh->b_data + sizeof(struct gfs2_dinode), x);
- *len = x;
-
-out_brelse:
+ x = ip->i_disksize + 1;
+ buf = kmalloc(x, GFP_NOFS);
+ if (!buf)
+ buf = ERR_PTR(-ENOMEM);
+ else
+ memcpy(buf, dibh->b_data + sizeof(struct gfs2_dinode), x);
brelse(dibh);
out:
gfs2_glock_dq_uninit(&i_gh);
- return error;
-}
-
-/**
- * gfs2_readlink - Read the value of a symlink
- * @dentry: the symlink
- * @buf: the buffer to read the symlink data into
- * @size: the size of the buffer
- *
- * Returns: errno
- */
-
-static int gfs2_readlink(struct dentry *dentry, char __user *user_buf,
- int user_size)
-{
- struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
- char array[GFS2_FAST_NAME_SIZE], *buf = array;
- unsigned int len = GFS2_FAST_NAME_SIZE;
- int error;
-
- error = gfs2_readlinki(ip, &buf, &len);
- if (error)
- return error;
-
- if (user_size > len - 1)
- user_size = len - 1;
-
- if (copy_to_user(user_buf, buf, user_size))
- error = -EFAULT;
- else
- error = user_size;
-
- if (buf != array)
- kfree(buf);
-
- return error;
+ nd_set_link(nd, buf);
+ return NULL;
}
-/**
- * gfs2_follow_link - Follow a symbolic link
- * @dentry: The dentry of the link
- * @nd: Data that we pass to vfs_follow_link()
- *
- * This can handle symlinks of any size. It is optimised for symlinks
- * under GFS2_FAST_NAME_SIZE.
- *
- * Returns: 0 on success or error code
- */
-
-static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd)
+static void gfs2_put_link(struct dentry *dentry, struct nameidata *nd, void *p)
{
- struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
- char array[GFS2_FAST_NAME_SIZE], *buf = array;
- unsigned int len = GFS2_FAST_NAME_SIZE;
- int error;
-
- error = gfs2_readlinki(ip, &buf, &len);
- if (!error) {
- error = vfs_follow_link(nd, buf);
- if (buf != array)
- kfree(buf);
- } else
- path_put(&nd->path);
-
- return ERR_PTR(error);
+ char *s = nd_get_link(nd);
+ if (!IS_ERR(s))
+ kfree(s);
}
/**
@@ -1426,8 +1366,9 @@ const struct inode_operations gfs2_dir_iops = {
};
const struct inode_operations gfs2_symlink_iops = {
- .readlink = gfs2_readlink,
+ .readlink = generic_readlink,
.follow_link = gfs2_follow_link,
+ .put_link = gfs2_put_link,
.permission = gfs2_permission,
.setattr = gfs2_setattr,
.getattr = gfs2_getattr,
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index b9dd3da22c0a..ca87598ead7f 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -22,6 +22,7 @@
#include <linux/crc32.h>
#include <linux/time.h>
#include <linux/wait.h>
+#include <linux/writeback.h>
#include "gfs2.h"
#include "incore.h"
@@ -711,7 +712,7 @@ void gfs2_unfreeze_fs(struct gfs2_sbd *sdp)
* Returns: errno
*/
-static int gfs2_write_inode(struct inode *inode, int sync)
+static int gfs2_write_inode(struct inode *inode, struct writeback_control *wbc)
{
struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_sbd *sdp = GFS2_SB(inode);
@@ -722,8 +723,7 @@ static int gfs2_write_inode(struct inode *inode, int sync)
int ret = 0;
/* Check this is a "normal" inode, etc */
- if (!test_bit(GIF_USER, &ip->i_flags) ||
- (current->flags & PF_MEMALLOC))
+ if (current->flags & PF_MEMALLOC)
return 0;
ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
if (ret)
@@ -746,7 +746,7 @@ static int gfs2_write_inode(struct inode *inode, int sync)
do_unlock:
gfs2_glock_dq_uninit(&gh);
do_flush:
- if (sync != 0)
+ if (wbc->sync_mode == WB_SYNC_ALL)
gfs2_log_flush(GFS2_SB(inode), ip->i_gl);
return ret;
}
@@ -860,6 +860,7 @@ restart:
gfs2_clear_rgrpd(sdp);
gfs2_jindex_free(sdp);
/* Take apart glock structures and buffer lists */
+ invalidate_inodes(sdp->sd_vfs);
gfs2_gl_hash_clear(sdp);
/* Unmount the locking protocol */
gfs2_lm_unmount(sdp);
@@ -1194,7 +1195,7 @@ static void gfs2_drop_inode(struct inode *inode)
{
struct gfs2_inode *ip = GFS2_I(inode);
- if (test_bit(GIF_USER, &ip->i_flags) && inode->i_nlink) {
+ if (inode->i_nlink) {
struct gfs2_glock *gl = ip->i_iopen_gh.gh_gl;
if (gl && test_bit(GLF_DEMOTE, &gl->gl_flags))
clear_nlink(inode);
@@ -1212,18 +1213,12 @@ static void gfs2_clear_inode(struct inode *inode)
{
struct gfs2_inode *ip = GFS2_I(inode);
- /* This tells us its a "real" inode and not one which only
- * serves to contain an address space (see rgrp.c, meta_io.c)
- * which therefore doesn't have its own glocks.
- */
- if (test_bit(GIF_USER, &ip->i_flags)) {
- ip->i_gl->gl_object = NULL;
- gfs2_glock_put(ip->i_gl);
- ip->i_gl = NULL;
- if (ip->i_iopen_gh.gh_gl) {
- ip->i_iopen_gh.gh_gl->gl_object = NULL;
- gfs2_glock_dq_uninit(&ip->i_iopen_gh);
- }
+ ip->i_gl->gl_object = NULL;
+ gfs2_glock_put(ip->i_gl);
+ ip->i_gl = NULL;
+ if (ip->i_iopen_gh.gh_gl) {
+ ip->i_iopen_gh.gh_gl->gl_object = NULL;
+ gfs2_glock_dq_uninit(&ip->i_iopen_gh);
}
}
@@ -1358,9 +1353,6 @@ static void gfs2_delete_inode(struct inode *inode)
struct gfs2_holder gh;
int error;
- if (!test_bit(GIF_USER, &ip->i_flags))
- goto out;
-
error = gfs2_glock_nq_init(ip->i_gl, LM_ST_EXCLUSIVE, 0, &gh);
if (unlikely(error)) {
gfs2_glock_dq_uninit(&ip->i_iopen_gh);
diff --git a/fs/gfs2/sys.c b/fs/gfs2/sys.c
index 0dc34621f6a6..a0db1c94317d 100644
--- a/fs/gfs2/sys.c
+++ b/fs/gfs2/sys.c
@@ -478,7 +478,6 @@ TUNE_ATTR(complain_secs, 0);
TUNE_ATTR(statfs_slow, 0);
TUNE_ATTR(new_files_jdata, 0);
TUNE_ATTR(quota_simul_sync, 1);
-TUNE_ATTR(stall_secs, 1);
TUNE_ATTR(statfs_quantum, 1);
TUNE_ATTR_3(quota_scale, quota_scale_show, quota_scale_store);
@@ -491,7 +490,6 @@ static struct attribute *tune_attrs[] = {
&tune_attr_complain_secs.attr,
&tune_attr_statfs_slow.attr,
&tune_attr_quota_simul_sync.attr,
- &tune_attr_stall_secs.attr,
&tune_attr_statfs_quantum.attr,
&tune_attr_quota_scale.attr,
&tune_attr_new_files_jdata.attr,
diff --git a/fs/gfs2/util.c b/fs/gfs2/util.c
index f6a7efa34eb9..226f2bfbf16a 100644
--- a/fs/gfs2/util.c
+++ b/fs/gfs2/util.c
@@ -21,6 +21,7 @@
#include "util.h"
struct kmem_cache *gfs2_glock_cachep __read_mostly;
+struct kmem_cache *gfs2_glock_aspace_cachep __read_mostly;
struct kmem_cache *gfs2_inode_cachep __read_mostly;
struct kmem_cache *gfs2_bufdata_cachep __read_mostly;
struct kmem_cache *gfs2_rgrpd_cachep __read_mostly;
diff --git a/fs/gfs2/util.h b/fs/gfs2/util.h
index 33e96b0ce9ab..b432e04600de 100644
--- a/fs/gfs2/util.h
+++ b/fs/gfs2/util.h
@@ -145,6 +145,7 @@ gfs2_io_error_bh_i((sdp), (bh), __func__, __FILE__, __LINE__);
extern struct kmem_cache *gfs2_glock_cachep;
+extern struct kmem_cache *gfs2_glock_aspace_cachep;
extern struct kmem_cache *gfs2_inode_cachep;
extern struct kmem_cache *gfs2_bufdata_cachep;
extern struct kmem_cache *gfs2_rgrpd_cachep;
diff --git a/fs/hfs/hfs_fs.h b/fs/hfs/hfs_fs.h
index 052387e11671..fe35e3b626c4 100644
--- a/fs/hfs/hfs_fs.h
+++ b/fs/hfs/hfs_fs.h
@@ -188,7 +188,7 @@ extern const struct address_space_operations hfs_btree_aops;
extern struct inode *hfs_new_inode(struct inode *, struct qstr *, int);
extern void hfs_inode_write_fork(struct inode *, struct hfs_extent *, __be32 *, __be32 *);
-extern int hfs_write_inode(struct inode *, int);
+extern int hfs_write_inode(struct inode *, struct writeback_control *);
extern int hfs_inode_setattr(struct dentry *, struct iattr *);
extern void hfs_inode_read_fork(struct inode *inode, struct hfs_extent *ext,
__be32 log_size, __be32 phys_size, u32 clump_size);
diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c
index a1cbff2b4d99..14f5cb1b9fdc 100644
--- a/fs/hfs/inode.c
+++ b/fs/hfs/inode.c
@@ -381,7 +381,7 @@ void hfs_inode_write_fork(struct inode *inode, struct hfs_extent *ext,
HFS_SB(inode->i_sb)->alloc_blksz);
}
-int hfs_write_inode(struct inode *inode, int unused)
+int hfs_write_inode(struct inode *inode, struct writeback_control *wbc)
{
struct inode *main_inode = inode;
struct hfs_find_data fd;
diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
index 43022f3d5148..74b473a8ef92 100644
--- a/fs/hfsplus/super.c
+++ b/fs/hfsplus/super.c
@@ -87,7 +87,8 @@ bad_inode:
return ERR_PTR(err);
}
-static int hfsplus_write_inode(struct inode *inode, int unused)
+static int hfsplus_write_inode(struct inode *inode,
+ struct writeback_control *wbc)
{
struct hfsplus_vh *vhdr;
int ret = 0;
diff --git a/fs/hpfs/anode.c b/fs/hpfs/anode.c
index 1aa88c4e0964..6a2f04bf3df0 100644
--- a/fs/hpfs/anode.c
+++ b/fs/hpfs/anode.c
@@ -353,7 +353,7 @@ int hpfs_ea_read(struct super_block *s, secno a, int ano, unsigned pos,
}
int hpfs_ea_write(struct super_block *s, secno a, int ano, unsigned pos,
- unsigned len, char *buf)
+ unsigned len, const char *buf)
{
struct buffer_head *bh;
char *data;
diff --git a/fs/hpfs/dentry.c b/fs/hpfs/dentry.c
index 940d6d150bee..67d9d36b3d5f 100644
--- a/fs/hpfs/dentry.c
+++ b/fs/hpfs/dentry.c
@@ -20,8 +20,8 @@ static int hpfs_hash_dentry(struct dentry *dentry, struct qstr *qstr)
if (l == 1) if (qstr->name[0]=='.') goto x;
if (l == 2) if (qstr->name[0]=='.' || qstr->name[1]=='.') goto x;
- hpfs_adjust_length((char *)qstr->name, &l);
- /*if (hpfs_chk_name((char *)qstr->name,&l))*/
+ hpfs_adjust_length(qstr->name, &l);
+ /*if (hpfs_chk_name(qstr->name,&l))*/
/*return -ENAMETOOLONG;*/
/*return -ENOENT;*/
x:
@@ -38,14 +38,16 @@ static int hpfs_compare_dentry(struct dentry *dentry, struct qstr *a, struct qst
{
unsigned al=a->len;
unsigned bl=b->len;
- hpfs_adjust_length((char *)a->name, &al);
- /*hpfs_adjust_length((char *)b->name, &bl);*/
+ hpfs_adjust_length(a->name, &al);
+ /*hpfs_adjust_length(b->name, &bl);*/
/* 'a' is the qstr of an already existing dentry, so the name
* must be valid. 'b' must be validated first.
*/
- if (hpfs_chk_name((char *)b->name, &bl)) return 1;
- if (hpfs_compare_names(dentry->d_sb, (char *)a->name, al, (char *)b->name, bl, 0)) return 1;
+ if (hpfs_chk_name(b->name, &bl))
+ return 1;
+ if (hpfs_compare_names(dentry->d_sb, a->name, al, b->name, bl, 0))
+ return 1;
return 0;
}
diff --git a/fs/hpfs/dir.c b/fs/hpfs/dir.c
index 8865c94f55f6..26e3964a4b8c 100644
--- a/fs/hpfs/dir.c
+++ b/fs/hpfs/dir.c
@@ -59,7 +59,7 @@ static int hpfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
struct hpfs_dirent *de;
int lc;
long old_pos;
- char *tempname;
+ unsigned char *tempname;
int c1, c2 = 0;
int ret = 0;
@@ -158,11 +158,11 @@ static int hpfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
tempname = hpfs_translate_name(inode->i_sb, de->name, de->namelen, lc, de->not_8x3);
if (filldir(dirent, tempname, de->namelen, old_pos, de->fnode, DT_UNKNOWN) < 0) {
filp->f_pos = old_pos;
- if (tempname != (char *)de->name) kfree(tempname);
+ if (tempname != de->name) kfree(tempname);
hpfs_brelse4(&qbh);
goto out;
}
- if (tempname != (char *)de->name) kfree(tempname);
+ if (tempname != de->name) kfree(tempname);
hpfs_brelse4(&qbh);
}
out:
@@ -187,7 +187,7 @@ out:
struct dentry *hpfs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
{
- const char *name = dentry->d_name.name;
+ const unsigned char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;
struct quad_buffer_head qbh;
struct hpfs_dirent *de;
@@ -197,7 +197,7 @@ struct dentry *hpfs_lookup(struct inode *dir, struct dentry *dentry, struct name
struct hpfs_inode_info *hpfs_result;
lock_kernel();
- if ((err = hpfs_chk_name((char *)name, &len))) {
+ if ((err = hpfs_chk_name(name, &len))) {
if (err == -ENAMETOOLONG) {
unlock_kernel();
return ERR_PTR(-ENAMETOOLONG);
@@ -209,7 +209,7 @@ struct dentry *hpfs_lookup(struct inode *dir, struct dentry *dentry, struct name
* '.' and '..' will never be passed here.
*/
- de = map_dirent(dir, hpfs_i(dir)->i_dno, (char *) name, len, NULL, &qbh);
+ de = map_dirent(dir, hpfs_i(dir)->i_dno, name, len, NULL, &qbh);
/*
* This is not really a bailout, just means file not found.
@@ -250,7 +250,7 @@ struct dentry *hpfs_lookup(struct inode *dir, struct dentry *dentry, struct name
hpfs_result = hpfs_i(result);
if (!de->directory) hpfs_result->i_parent_dir = dir->i_ino;
- hpfs_decide_conv(result, (char *)name, len);
+ hpfs_decide_conv(result, name, len);
if (de->has_acl || de->has_xtd_perm) if (!(dir->i_sb->s_flags & MS_RDONLY)) {
hpfs_error(result->i_sb, "ACLs or XPERM found. This is probably HPFS386. This driver doesn't support it now. Send me some info on these structures");
diff --git a/fs/hpfs/dnode.c b/fs/hpfs/dnode.c
index fe83c2b7d2d8..9b2ffadfc8c4 100644
--- a/fs/hpfs/dnode.c
+++ b/fs/hpfs/dnode.c
@@ -158,7 +158,8 @@ static void set_last_pointer(struct super_block *s, struct dnode *d, dnode_secno
/* Add an entry to dnode and don't care if it grows over 2048 bytes */
-struct hpfs_dirent *hpfs_add_de(struct super_block *s, struct dnode *d, unsigned char *name,
+struct hpfs_dirent *hpfs_add_de(struct super_block *s, struct dnode *d,
+ const unsigned char *name,
unsigned namelen, secno down_ptr)
{
struct hpfs_dirent *de;
@@ -223,7 +224,7 @@ static void fix_up_ptrs(struct super_block *s, struct dnode *d)
/* Add an entry to dnode and do dnode splitting if required */
static int hpfs_add_to_dnode(struct inode *i, dnode_secno dno,
- unsigned char *name, unsigned namelen,
+ const unsigned char *name, unsigned namelen,
struct hpfs_dirent *new_de, dnode_secno down_ptr)
{
struct quad_buffer_head qbh, qbh1, qbh2;
@@ -231,7 +232,7 @@ static int hpfs_add_to_dnode(struct inode *i, dnode_secno dno,
dnode_secno adno, rdno;
struct hpfs_dirent *de;
struct hpfs_dirent nde;
- char *nname;
+ unsigned char *nname;
int h;
int pos;
struct buffer_head *bh;
@@ -305,7 +306,9 @@ static int hpfs_add_to_dnode(struct inode *i, dnode_secno dno,
pos++;
}
copy_de(new_de = &nde, de);
- memcpy(name = nname, de->name, namelen = de->namelen);
+ memcpy(nname, de->name, de->namelen);
+ name = nname;
+ namelen = de->namelen;
for_all_poss(i, hpfs_pos_subst, ((loff_t)dno << 4) | pos, 4);
down_ptr = adno;
set_last_pointer(i->i_sb, ad, de->down ? de_down_pointer(de) : 0);
@@ -368,7 +371,8 @@ static int hpfs_add_to_dnode(struct inode *i, dnode_secno dno,
* I hope, now it's finally bug-free.
*/
-int hpfs_add_dirent(struct inode *i, unsigned char *name, unsigned namelen,
+int hpfs_add_dirent(struct inode *i,
+ const unsigned char *name, unsigned namelen,
struct hpfs_dirent *new_de, int cdepth)
{
struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
@@ -897,7 +901,8 @@ struct hpfs_dirent *map_pos_dirent(struct inode *inode, loff_t *posp,
/* Find a dirent in tree */
-struct hpfs_dirent *map_dirent(struct inode *inode, dnode_secno dno, char *name, unsigned len,
+struct hpfs_dirent *map_dirent(struct inode *inode, dnode_secno dno,
+ const unsigned char *name, unsigned len,
dnode_secno *dd, struct quad_buffer_head *qbh)
{
struct dnode *dnode;
@@ -988,8 +993,8 @@ void hpfs_remove_dtree(struct super_block *s, dnode_secno dno)
struct hpfs_dirent *map_fnode_dirent(struct super_block *s, fnode_secno fno,
struct fnode *f, struct quad_buffer_head *qbh)
{
- char *name1;
- char *name2;
+ unsigned char *name1;
+ unsigned char *name2;
int name1len, name2len;
struct dnode *d;
dnode_secno dno, downd;
diff --git a/fs/hpfs/ea.c b/fs/hpfs/ea.c
index 547a8384571f..45e53d972b42 100644
--- a/fs/hpfs/ea.c
+++ b/fs/hpfs/ea.c
@@ -62,8 +62,8 @@ static char *get_indirect_ea(struct super_block *s, int ano, secno a, int size)
return ret;
}
-static void set_indirect_ea(struct super_block *s, int ano, secno a, char *data,
- int size)
+static void set_indirect_ea(struct super_block *s, int ano, secno a,
+ const char *data, int size)
{
hpfs_ea_write(s, a, ano, 0, size, data);
}
@@ -186,7 +186,8 @@ char *hpfs_get_ea(struct super_block *s, struct fnode *fnode, char *key, int *si
* This driver can't change sizes of eas ('cause I just don't need it).
*/
-void hpfs_set_ea(struct inode *inode, struct fnode *fnode, char *key, char *data, int size)
+void hpfs_set_ea(struct inode *inode, struct fnode *fnode, const char *key,
+ const char *data, int size)
{
fnode_secno fno = inode->i_ino;
struct super_block *s = inode->i_sb;
diff --git a/fs/hpfs/hpfs_fn.h b/fs/hpfs/hpfs_fn.h
index 701ca54c0867..97bf738cd5d6 100644
--- a/fs/hpfs/hpfs_fn.h
+++ b/fs/hpfs/hpfs_fn.h
@@ -215,7 +215,7 @@ secno hpfs_bplus_lookup(struct super_block *, struct inode *, struct bplus_heade
secno hpfs_add_sector_to_btree(struct super_block *, secno, int, unsigned);
void hpfs_remove_btree(struct super_block *, struct bplus_header *);
int hpfs_ea_read(struct super_block *, secno, int, unsigned, unsigned, char *);
-int hpfs_ea_write(struct super_block *, secno, int, unsigned, unsigned, char *);
+int hpfs_ea_write(struct super_block *, secno, int, unsigned, unsigned, const char *);
void hpfs_ea_remove(struct super_block *, secno, int, unsigned);
void hpfs_truncate_btree(struct super_block *, secno, int, unsigned);
void hpfs_remove_fnode(struct super_block *, fnode_secno fno);
@@ -244,13 +244,17 @@ extern const struct file_operations hpfs_dir_ops;
void hpfs_add_pos(struct inode *, loff_t *);
void hpfs_del_pos(struct inode *, loff_t *);
-struct hpfs_dirent *hpfs_add_de(struct super_block *, struct dnode *, unsigned char *, unsigned, secno);
-int hpfs_add_dirent(struct inode *, unsigned char *, unsigned, struct hpfs_dirent *, int);
+struct hpfs_dirent *hpfs_add_de(struct super_block *, struct dnode *,
+ const unsigned char *, unsigned, secno);
+int hpfs_add_dirent(struct inode *, const unsigned char *, unsigned,
+ struct hpfs_dirent *, int);
int hpfs_remove_dirent(struct inode *, dnode_secno, struct hpfs_dirent *, struct quad_buffer_head *, int);
void hpfs_count_dnodes(struct super_block *, dnode_secno, int *, int *, int *);
dnode_secno hpfs_de_as_down_as_possible(struct super_block *, dnode_secno dno);
struct hpfs_dirent *map_pos_dirent(struct inode *, loff_t *, struct quad_buffer_head *);
-struct hpfs_dirent *map_dirent(struct inode *, dnode_secno, char *, unsigned, dnode_secno *, struct quad_buffer_head *);
+struct hpfs_dirent *map_dirent(struct inode *, dnode_secno,
+ const unsigned char *, unsigned, dnode_secno *,
+ struct quad_buffer_head *);
void hpfs_remove_dtree(struct super_block *, dnode_secno);
struct hpfs_dirent *map_fnode_dirent(struct super_block *, fnode_secno, struct fnode *, struct quad_buffer_head *);
@@ -259,7 +263,8 @@ struct hpfs_dirent *map_fnode_dirent(struct super_block *, fnode_secno, struct f
void hpfs_ea_ext_remove(struct super_block *, secno, int, unsigned);
int hpfs_read_ea(struct super_block *, struct fnode *, char *, char *, int);
char *hpfs_get_ea(struct super_block *, struct fnode *, char *, int *);
-void hpfs_set_ea(struct inode *, struct fnode *, char *, char *, int);
+void hpfs_set_ea(struct inode *, struct fnode *, const char *,
+ const char *, int);
/* file.c */
@@ -282,7 +287,7 @@ void hpfs_delete_inode(struct inode *);
unsigned *hpfs_map_dnode_bitmap(struct super_block *, struct quad_buffer_head *);
unsigned *hpfs_map_bitmap(struct super_block *, unsigned, struct quad_buffer_head *, char *);
-char *hpfs_load_code_page(struct super_block *, secno);
+unsigned char *hpfs_load_code_page(struct super_block *, secno);
secno *hpfs_load_bitmap_directory(struct super_block *, secno bmp);
struct fnode *hpfs_map_fnode(struct super_block *s, ino_t, struct buffer_head **);
struct anode *hpfs_map_anode(struct super_block *s, anode_secno, struct buffer_head **);
@@ -292,12 +297,13 @@ dnode_secno hpfs_fnode_dno(struct super_block *s, ino_t ino);
/* name.c */
unsigned char hpfs_upcase(unsigned char *, unsigned char);
-int hpfs_chk_name(unsigned char *, unsigned *);
-char *hpfs_translate_name(struct super_block *, unsigned char *, unsigned, int, int);
-int hpfs_compare_names(struct super_block *, unsigned char *, unsigned, unsigned char *, unsigned, int);
-int hpfs_is_name_long(unsigned char *, unsigned);
-void hpfs_adjust_length(unsigned char *, unsigned *);
-void hpfs_decide_conv(struct inode *, unsigned char *, unsigned);
+int hpfs_chk_name(const unsigned char *, unsigned *);
+unsigned char *hpfs_translate_name(struct super_block *, unsigned char *, unsigned, int, int);
+int hpfs_compare_names(struct super_block *, const unsigned char *, unsigned,
+ const unsigned char *, unsigned, int);
+int hpfs_is_name_long(const unsigned char *, unsigned);
+void hpfs_adjust_length(const unsigned char *, unsigned *);
+void hpfs_decide_conv(struct inode *, const unsigned char *, unsigned);
/* namei.c */
diff --git a/fs/hpfs/inode.c b/fs/hpfs/inode.c
index fe703ae46bc7..ff90affb94e1 100644
--- a/fs/hpfs/inode.c
+++ b/fs/hpfs/inode.c
@@ -46,7 +46,7 @@ void hpfs_read_inode(struct inode *i)
struct fnode *fnode;
struct super_block *sb = i->i_sb;
struct hpfs_inode_info *hpfs_inode = hpfs_i(i);
- unsigned char *ea;
+ void *ea;
int ea_size;
if (!(fnode = hpfs_map_fnode(sb, i->i_ino, &bh))) {
@@ -112,7 +112,7 @@ void hpfs_read_inode(struct inode *i)
}
}
if (fnode->dirflag) {
- unsigned n_dnodes, n_subdirs;
+ int n_dnodes, n_subdirs;
i->i_mode |= S_IFDIR;
i->i_op = &hpfs_dir_iops;
i->i_fop = &hpfs_dir_ops;
diff --git a/fs/hpfs/map.c b/fs/hpfs/map.c
index c4724589b2eb..840d033ecee8 100644
--- a/fs/hpfs/map.c
+++ b/fs/hpfs/map.c
@@ -35,7 +35,7 @@ unsigned int *hpfs_map_bitmap(struct super_block *s, unsigned bmp_block,
* lowercasing table
*/
-char *hpfs_load_code_page(struct super_block *s, secno cps)
+unsigned char *hpfs_load_code_page(struct super_block *s, secno cps)
{
struct buffer_head *bh;
secno cpds;
@@ -71,7 +71,7 @@ char *hpfs_load_code_page(struct super_block *s, secno cps)
brelse(bh);
return NULL;
}
- ptr = (char *)cpd + cpd->offs[cpi] + 6;
+ ptr = (unsigned char *)cpd + cpd->offs[cpi] + 6;
if (!(cp_table = kmalloc(256, GFP_KERNEL))) {
printk("HPFS: out of memory for code page table\n");
brelse(bh);
@@ -217,7 +217,7 @@ struct dnode *hpfs_map_dnode(struct super_block *s, unsigned secno,
if ((dnode = hpfs_map_4sectors(s, secno, qbh, DNODE_RD_AHEAD)))
if (hpfs_sb(s)->sb_chk) {
unsigned p, pp = 0;
- unsigned char *d = (char *)dnode;
+ unsigned char *d = (unsigned char *)dnode;
int b = 0;
if (dnode->magic != DNODE_MAGIC) {
hpfs_error(s, "bad magic on dnode %08x", secno);
diff --git a/fs/hpfs/name.c b/fs/hpfs/name.c
index 1f4a964384eb..f24736d7a439 100644
--- a/fs/hpfs/name.c
+++ b/fs/hpfs/name.c
@@ -8,16 +8,16 @@
#include "hpfs_fn.h"
-static char *text_postfix[]={
+static const char *text_postfix[]={
".ASM", ".BAS", ".BAT", ".C", ".CC", ".CFG", ".CMD", ".CON", ".CPP", ".DEF",
".DOC", ".DPR", ".ERX", ".H", ".HPP", ".HTM", ".HTML", ".JAVA", ".LOG", ".PAS",
".RC", ".TEX", ".TXT", ".Y", ""};
-static char *text_prefix[]={
+static const char *text_prefix[]={
"AUTOEXEC.", "CHANGES", "COPYING", "CONFIG.", "CREDITS", "FAQ", "FILE_ID.DIZ",
"MAKEFILE", "READ.ME", "README", "TERMCAP", ""};
-void hpfs_decide_conv(struct inode *inode, unsigned char *name, unsigned len)
+void hpfs_decide_conv(struct inode *inode, const unsigned char *name, unsigned len)
{
struct hpfs_inode_info *hpfs_inode = hpfs_i(inode);
int i;
@@ -71,7 +71,7 @@ static inline unsigned char locase(unsigned char *dir, unsigned char a)
return dir[a];
}
-int hpfs_chk_name(unsigned char *name, unsigned *len)
+int hpfs_chk_name(const unsigned char *name, unsigned *len)
{
int i;
if (*len > 254) return -ENAMETOOLONG;
@@ -83,10 +83,10 @@ int hpfs_chk_name(unsigned char *name, unsigned *len)
return 0;
}
-char *hpfs_translate_name(struct super_block *s, unsigned char *from,
+unsigned char *hpfs_translate_name(struct super_block *s, unsigned char *from,
unsigned len, int lc, int lng)
{
- char *to;
+ unsigned char *to;
int i;
if (hpfs_sb(s)->sb_chk >= 2) if (hpfs_is_name_long(from, len) != lng) {
printk("HPFS: Long name flag mismatch - name ");
@@ -103,8 +103,9 @@ char *hpfs_translate_name(struct super_block *s, unsigned char *from,
return to;
}
-int hpfs_compare_names(struct super_block *s, unsigned char *n1, unsigned l1,
- unsigned char *n2, unsigned l2, int last)
+int hpfs_compare_names(struct super_block *s,
+ const unsigned char *n1, unsigned l1,
+ const unsigned char *n2, unsigned l2, int last)
{
unsigned l = l1 < l2 ? l1 : l2;
unsigned i;
@@ -120,7 +121,7 @@ int hpfs_compare_names(struct super_block *s, unsigned char *n1, unsigned l1,
return 0;
}
-int hpfs_is_name_long(unsigned char *name, unsigned len)
+int hpfs_is_name_long(const unsigned char *name, unsigned len)
{
int i,j;
for (i = 0; i < len && name[i] != '.'; i++)
@@ -134,7 +135,7 @@ int hpfs_is_name_long(unsigned char *name, unsigned len)
/* OS/2 clears dots and spaces at the end of file name, so we have to */
-void hpfs_adjust_length(unsigned char *name, unsigned *len)
+void hpfs_adjust_length(const unsigned char *name, unsigned *len)
{
if (!*len) return;
if (*len == 1 && name[0] == '.') return;
diff --git a/fs/hpfs/namei.c b/fs/hpfs/namei.c
index 82b9c4ba9ed0..11c2b4080f65 100644
--- a/fs/hpfs/namei.c
+++ b/fs/hpfs/namei.c
@@ -11,7 +11,7 @@
static int hpfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
{
- const char *name = dentry->d_name.name;
+ const unsigned char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;
struct quad_buffer_head qbh0;
struct buffer_head *bh;
@@ -24,7 +24,7 @@ static int hpfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
int r;
struct hpfs_dirent dee;
int err;
- if ((err = hpfs_chk_name((char *)name, &len))) return err==-ENOENT ? -EINVAL : err;
+ if ((err = hpfs_chk_name(name, &len))) return err==-ENOENT ? -EINVAL : err;
lock_kernel();
err = -ENOSPC;
fnode = hpfs_alloc_fnode(dir->i_sb, hpfs_i(dir)->i_dno, &fno, &bh);
@@ -62,7 +62,7 @@ static int hpfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
result->i_mode &= ~0222;
mutex_lock(&hpfs_i(dir)->i_mutex);
- r = hpfs_add_dirent(dir, (char *)name, len, &dee, 0);
+ r = hpfs_add_dirent(dir, name, len, &dee, 0);
if (r == 1)
goto bail3;
if (r == -1) {
@@ -121,7 +121,7 @@ bail:
static int hpfs_create(struct inode *dir, struct dentry *dentry, int mode, struct nameidata *nd)
{
- const char *name = dentry->d_name.name;
+ const unsigned char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;
struct inode *result = NULL;
struct buffer_head *bh;
@@ -130,7 +130,7 @@ static int hpfs_create(struct inode *dir, struct dentry *dentry, int mode, struc
int r;
struct hpfs_dirent dee;
int err;
- if ((err = hpfs_chk_name((char *)name, &len)))
+ if ((err = hpfs_chk_name(name, &len)))
return err==-ENOENT ? -EINVAL : err;
lock_kernel();
err = -ENOSPC;
@@ -155,7 +155,7 @@ static int hpfs_create(struct inode *dir, struct dentry *dentry, int mode, struc
result->i_op = &hpfs_file_iops;
result->i_fop = &hpfs_file_ops;
result->i_nlink = 1;
- hpfs_decide_conv(result, (char *)name, len);
+ hpfs_decide_conv(result, name, len);
hpfs_i(result)->i_parent_dir = dir->i_ino;
result->i_ctime.tv_sec = result->i_mtime.tv_sec = result->i_atime.tv_sec = local_to_gmt(dir->i_sb, dee.creation_date);
result->i_ctime.tv_nsec = 0;
@@ -170,7 +170,7 @@ static int hpfs_create(struct inode *dir, struct dentry *dentry, int mode, struc
hpfs_i(result)->mmu_private = 0;
mutex_lock(&hpfs_i(dir)->i_mutex);
- r = hpfs_add_dirent(dir, (char *)name, len, &dee, 0);
+ r = hpfs_add_dirent(dir, name, len, &dee, 0);
if (r == 1)
goto bail2;
if (r == -1) {
@@ -211,7 +211,7 @@ bail:
static int hpfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t rdev)
{
- const char *name = dentry->d_name.name;
+ const unsigned char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;
struct buffer_head *bh;
struct fnode *fnode;
@@ -220,7 +220,7 @@ static int hpfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t
struct hpfs_dirent dee;
struct inode *result = NULL;
int err;
- if ((err = hpfs_chk_name((char *)name, &len))) return err==-ENOENT ? -EINVAL : err;
+ if ((err = hpfs_chk_name(name, &len))) return err==-ENOENT ? -EINVAL : err;
if (hpfs_sb(dir->i_sb)->sb_eas < 2) return -EPERM;
if (!new_valid_dev(rdev))
return -EINVAL;
@@ -256,7 +256,7 @@ static int hpfs_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t
init_special_inode(result, mode, rdev);
mutex_lock(&hpfs_i(dir)->i_mutex);
- r = hpfs_add_dirent(dir, (char *)name, len, &dee, 0);
+ r = hpfs_add_dirent(dir, name, len, &dee, 0);
if (r == 1)
goto bail2;
if (r == -1) {
@@ -289,7 +289,7 @@ bail:
static int hpfs_symlink(struct inode *dir, struct dentry *dentry, const char *symlink)
{
- const char *name = dentry->d_name.name;
+ const unsigned char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;
struct buffer_head *bh;
struct fnode *fnode;
@@ -298,7 +298,7 @@ static int hpfs_symlink(struct inode *dir, struct dentry *dentry, const char *sy
struct hpfs_dirent dee;
struct inode *result;
int err;
- if ((err = hpfs_chk_name((char *)name, &len))) return err==-ENOENT ? -EINVAL : err;
+ if ((err = hpfs_chk_name(name, &len))) return err==-ENOENT ? -EINVAL : err;
lock_kernel();
if (hpfs_sb(dir->i_sb)->sb_eas < 2) {
unlock_kernel();
@@ -335,7 +335,7 @@ static int hpfs_symlink(struct inode *dir, struct dentry *dentry, const char *sy
result->i_data.a_ops = &hpfs_symlink_aops;
mutex_lock(&hpfs_i(dir)->i_mutex);
- r = hpfs_add_dirent(dir, (char *)name, len, &dee, 0);
+ r = hpfs_add_dirent(dir, name, len, &dee, 0);
if (r == 1)
goto bail2;
if (r == -1) {
@@ -345,7 +345,7 @@ static int hpfs_symlink(struct inode *dir, struct dentry *dentry, const char *sy
fnode->len = len;
memcpy(fnode->name, name, len > 15 ? 15 : len);
fnode->up = dir->i_ino;
- hpfs_set_ea(result, fnode, "SYMLINK", (char *)symlink, strlen(symlink));
+ hpfs_set_ea(result, fnode, "SYMLINK", symlink, strlen(symlink));
mark_buffer_dirty(bh);
brelse(bh);
@@ -369,7 +369,7 @@ bail:
static int hpfs_unlink(struct inode *dir, struct dentry *dentry)
{
- const char *name = dentry->d_name.name;
+ const unsigned char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;
struct quad_buffer_head qbh;
struct hpfs_dirent *de;
@@ -381,12 +381,12 @@ static int hpfs_unlink(struct inode *dir, struct dentry *dentry)
int err;
lock_kernel();
- hpfs_adjust_length((char *)name, &len);
+ hpfs_adjust_length(name, &len);
again:
mutex_lock(&hpfs_i(inode)->i_parent_mutex);
mutex_lock(&hpfs_i(dir)->i_mutex);
err = -ENOENT;
- de = map_dirent(dir, hpfs_i(dir)->i_dno, (char *)name, len, &dno, &qbh);
+ de = map_dirent(dir, hpfs_i(dir)->i_dno, name, len, &dno, &qbh);
if (!de)
goto out;
@@ -413,22 +413,25 @@ again:
mutex_unlock(&hpfs_i(dir)->i_mutex);
mutex_unlock(&hpfs_i(inode)->i_parent_mutex);
- d_drop(dentry);
- spin_lock(&dentry->d_lock);
- if (atomic_read(&dentry->d_count) > 1 ||
- generic_permission(inode, MAY_WRITE, NULL) ||
+ dentry_unhash(dentry);
+ if (!d_unhashed(dentry)) {
+ dput(dentry);
+ unlock_kernel();
+ return -ENOSPC;
+ }
+ if (generic_permission(inode, MAY_WRITE, NULL) ||
!S_ISREG(inode->i_mode) ||
get_write_access(inode)) {
- spin_unlock(&dentry->d_lock);
d_rehash(dentry);
+ dput(dentry);
} else {
struct iattr newattrs;
- spin_unlock(&dentry->d_lock);
/*printk("HPFS: truncating file before delete.\n");*/
newattrs.ia_size = 0;
newattrs.ia_valid = ATTR_SIZE | ATTR_CTIME;
err = notify_change(dentry, &newattrs);
put_write_access(inode);
+ dput(dentry);
if (!err)
goto again;
}
@@ -451,7 +454,7 @@ out:
static int hpfs_rmdir(struct inode *dir, struct dentry *dentry)
{
- const char *name = dentry->d_name.name;
+ const unsigned char *name = dentry->d_name.name;
unsigned len = dentry->d_name.len;
struct quad_buffer_head qbh;
struct hpfs_dirent *de;
@@ -462,12 +465,12 @@ static int hpfs_rmdir(struct inode *dir, struct dentry *dentry)
int err;
int r;
- hpfs_adjust_length((char *)name, &len);
+ hpfs_adjust_length(name, &len);
lock_kernel();
mutex_lock(&hpfs_i(inode)->i_parent_mutex);
mutex_lock(&hpfs_i(dir)->i_mutex);
err = -ENOENT;
- de = map_dirent(dir, hpfs_i(dir)->i_dno, (char *)name, len, &dno, &qbh);
+ de = map_dirent(dir, hpfs_i(dir)->i_dno, name, len, &dno, &qbh);
if (!de)
goto out;
@@ -546,10 +549,10 @@ const struct address_space_operations hpfs_symlink_aops = {
static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry)
{
- char *old_name = (char *)old_dentry->d_name.name;
- int old_len = old_dentry->d_name.len;
- char *new_name = (char *)new_dentry->d_name.name;
- int new_len = new_dentry->d_name.len;
+ const unsigned char *old_name = old_dentry->d_name.name;
+ unsigned old_len = old_dentry->d_name.len;
+ const unsigned char *new_name = new_dentry->d_name.name;
+ unsigned new_len = new_dentry->d_name.len;
struct inode *i = old_dentry->d_inode;
struct inode *new_inode = new_dentry->d_inode;
struct quad_buffer_head qbh, qbh1;
@@ -560,9 +563,9 @@ static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry,
struct buffer_head *bh;
struct fnode *fnode;
int err;
- if ((err = hpfs_chk_name((char *)new_name, &new_len))) return err;
+ if ((err = hpfs_chk_name(new_name, &new_len))) return err;
err = 0;
- hpfs_adjust_length((char *)old_name, &old_len);
+ hpfs_adjust_length(old_name, &old_len);
lock_kernel();
/* order doesn't matter, due to VFS exclusion */
@@ -579,7 +582,7 @@ static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry,
goto end1;
}
- if (!(dep = map_dirent(old_dir, hpfs_i(old_dir)->i_dno, (char *)old_name, old_len, &dno, &qbh))) {
+ if (!(dep = map_dirent(old_dir, hpfs_i(old_dir)->i_dno, old_name, old_len, &dno, &qbh))) {
hpfs_error(i->i_sb, "lookup succeeded but map dirent failed");
err = -ENOENT;
goto end1;
@@ -590,7 +593,7 @@ static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry,
if (new_inode) {
int r;
if ((r = hpfs_remove_dirent(old_dir, dno, dep, &qbh, 1)) != 2) {
- if ((nde = map_dirent(new_dir, hpfs_i(new_dir)->i_dno, (char *)new_name, new_len, NULL, &qbh1))) {
+ if ((nde = map_dirent(new_dir, hpfs_i(new_dir)->i_dno, new_name, new_len, NULL, &qbh1))) {
clear_nlink(new_inode);
copy_de(nde, &de);
memcpy(nde->name, new_name, new_len);
@@ -618,7 +621,7 @@ static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry,
}
if (new_dir == old_dir)
- if (!(dep = map_dirent(old_dir, hpfs_i(old_dir)->i_dno, (char *)old_name, old_len, &dno, &qbh))) {
+ if (!(dep = map_dirent(old_dir, hpfs_i(old_dir)->i_dno, old_name, old_len, &dno, &qbh))) {
hpfs_unlock_creation(i->i_sb);
hpfs_error(i->i_sb, "lookup succeeded but map dirent failed at #2");
err = -ENOENT;
@@ -648,7 +651,7 @@ static int hpfs_rename(struct inode *old_dir, struct dentry *old_dentry,
brelse(bh);
}
hpfs_i(i)->i_conv = hpfs_sb(i->i_sb)->sb_conv;
- hpfs_decide_conv(i, (char *)new_name, new_len);
+ hpfs_decide_conv(i, new_name, new_len);
end1:
if (old_dir != new_dir)
mutex_unlock(&hpfs_i(new_dir)->i_mutex);
diff --git a/fs/hppfs/hppfs.c b/fs/hppfs/hppfs.c
index 7239efc690d8..2e4dfa8593da 100644
--- a/fs/hppfs/hppfs.c
+++ b/fs/hppfs/hppfs.c
@@ -718,7 +718,7 @@ static int hppfs_fill_super(struct super_block *sb, void *d, int silent)
struct vfsmount *proc_mnt;
int err = -ENOENT;
- proc_mnt = do_kern_mount("proc", 0, "proc", NULL);
+ proc_mnt = mntget(current->nsproxy->pid_ns->proc_mnt);
if (IS_ERR(proc_mnt))
goto out;
diff --git a/fs/internal.h b/fs/internal.h
index e96a1667d749..8a03a5447bdf 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -70,6 +70,8 @@ extern struct vfsmount *copy_tree(struct vfsmount *, struct dentry *, int);
extern void __init mnt_init(void);
+extern spinlock_t vfsmount_lock;
+
/*
* fs_struct.c
*/
diff --git a/fs/jbd2/checkpoint.c b/fs/jbd2/checkpoint.c
index 886849370950..30beb11ef928 100644
--- a/fs/jbd2/checkpoint.c
+++ b/fs/jbd2/checkpoint.c
@@ -507,6 +507,7 @@ int jbd2_cleanup_journal_tail(journal_t *journal)
if (blocknr < journal->j_tail)
freed = freed + journal->j_last - journal->j_first;
+ trace_jbd2_cleanup_journal_tail(journal, first_tid, blocknr, freed);
jbd_debug(1,
"Cleaning journal tail from %d to %d (offset %lu), "
"freeing %lu\n",
diff --git a/fs/jbd2/commit.c b/fs/jbd2/commit.c
index 1bc74b6f26d2..671da7fb7ffd 100644
--- a/fs/jbd2/commit.c
+++ b/fs/jbd2/commit.c
@@ -883,8 +883,7 @@ restart_loop:
spin_unlock(&journal->j_list_lock);
bh = jh2bh(jh);
jbd_lock_bh_state(bh);
- J_ASSERT_JH(jh, jh->b_transaction == commit_transaction ||
- jh->b_transaction == journal->j_running_transaction);
+ J_ASSERT_JH(jh, jh->b_transaction == commit_transaction);
/*
* If there is undo-protected committed data against
@@ -930,12 +929,12 @@ restart_loop:
/* A buffer which has been freed while still being
* journaled by a previous transaction may end up still
* being dirty here, but we want to avoid writing back
- * that buffer in the future now that the last use has
- * been committed. That's not only a performance gain,
- * it also stops aliasing problems if the buffer is left
- * behind for writeback and gets reallocated for another
+ * that buffer in the future after the "add to orphan"
+ * operation been committed, That's not only a performance
+ * gain, it also stops aliasing problems if the buffer is
+ * left behind for writeback and gets reallocated for another
* use in a different page. */
- if (buffer_freed(bh)) {
+ if (buffer_freed(bh) && !jh->b_next_transaction) {
clear_buffer_freed(bh);
clear_buffer_jbddirty(bh);
}
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c
index ac0d027595d0..c03d4dce4d76 100644
--- a/fs/jbd2/journal.c
+++ b/fs/jbd2/journal.c
@@ -39,6 +39,8 @@
#include <linux/seq_file.h>
#include <linux/math64.h>
#include <linux/hash.h>
+#include <linux/log2.h>
+#include <linux/vmalloc.h>
#define CREATE_TRACE_POINTS
#include <trace/events/jbd2.h>
@@ -93,6 +95,7 @@ EXPORT_SYMBOL(jbd2_journal_begin_ordered_truncate);
static int journal_convert_superblock_v1(journal_t *, journal_superblock_t *);
static void __journal_abort_soft (journal_t *journal, int errno);
+static int jbd2_journal_create_slab(size_t slab_size);
/*
* Helper function used to manage commit timeouts
@@ -1248,6 +1251,13 @@ int jbd2_journal_load(journal_t *journal)
}
}
+ /*
+ * Create a slab for this blocksize
+ */
+ err = jbd2_journal_create_slab(be32_to_cpu(sb->s_blocksize));
+ if (err)
+ return err;
+
/* Let the recovery code check whether it needs to recover any
* data from the journal. */
if (jbd2_journal_recover(journal))
@@ -1807,6 +1817,127 @@ size_t journal_tag_bytes(journal_t *journal)
}
/*
+ * JBD memory management
+ *
+ * These functions are used to allocate block-sized chunks of memory
+ * used for making copies of buffer_head data. Very often it will be
+ * page-sized chunks of data, but sometimes it will be in
+ * sub-page-size chunks. (For example, 16k pages on Power systems
+ * with a 4k block file system.) For blocks smaller than a page, we
+ * use a SLAB allocator. There are slab caches for each block size,
+ * which are allocated at mount time, if necessary, and we only free
+ * (all of) the slab caches when/if the jbd2 module is unloaded. For
+ * this reason we don't need to a mutex to protect access to
+ * jbd2_slab[] allocating or releasing memory; only in
+ * jbd2_journal_create_slab().
+ */
+#define JBD2_MAX_SLABS 8
+static struct kmem_cache *jbd2_slab[JBD2_MAX_SLABS];
+static DECLARE_MUTEX(jbd2_slab_create_sem);
+
+static const char *jbd2_slab_names[JBD2_MAX_SLABS] = {
+ "jbd2_1k", "jbd2_2k", "jbd2_4k", "jbd2_8k",
+ "jbd2_16k", "jbd2_32k", "jbd2_64k", "jbd2_128k"
+};
+
+
+static void jbd2_journal_destroy_slabs(void)
+{
+ int i;
+
+ for (i = 0; i < JBD2_MAX_SLABS; i++) {
+ if (jbd2_slab[i])
+ kmem_cache_destroy(jbd2_slab[i]);
+ jbd2_slab[i] = NULL;
+ }
+}
+
+static int jbd2_journal_create_slab(size_t size)
+{
+ int i = order_base_2(size) - 10;
+ size_t slab_size;
+
+ if (size == PAGE_SIZE)
+ return 0;
+
+ if (i >= JBD2_MAX_SLABS)
+ return -EINVAL;
+
+ if (unlikely(i < 0))
+ i = 0;
+ down(&jbd2_slab_create_sem);
+ if (jbd2_slab[i]) {
+ up(&jbd2_slab_create_sem);
+ return 0; /* Already created */
+ }
+
+ slab_size = 1 << (i+10);
+ jbd2_slab[i] = kmem_cache_create(jbd2_slab_names[i], slab_size,
+ slab_size, 0, NULL);
+ up(&jbd2_slab_create_sem);
+ if (!jbd2_slab[i]) {
+ printk(KERN_EMERG "JBD2: no memory for jbd2_slab cache\n");
+ return -ENOMEM;
+ }
+ return 0;
+}
+
+static struct kmem_cache *get_slab(size_t size)
+{
+ int i = order_base_2(size) - 10;
+
+ BUG_ON(i >= JBD2_MAX_SLABS);
+ if (unlikely(i < 0))
+ i = 0;
+ BUG_ON(jbd2_slab[i] == 0);
+ return jbd2_slab[i];
+}
+
+void *jbd2_alloc(size_t size, gfp_t flags)
+{
+ void *ptr;
+
+ BUG_ON(size & (size-1)); /* Must be a power of 2 */
+
+ flags |= __GFP_REPEAT;
+ if (size == PAGE_SIZE)
+ ptr = (void *)__get_free_pages(flags, 0);
+ else if (size > PAGE_SIZE) {
+ int order = get_order(size);
+
+ if (order < 3)
+ ptr = (void *)__get_free_pages(flags, order);
+ else
+ ptr = vmalloc(size);
+ } else
+ ptr = kmem_cache_alloc(get_slab(size), flags);
+
+ /* Check alignment; SLUB has gotten this wrong in the past,
+ * and this can lead to user data corruption! */
+ BUG_ON(((unsigned long) ptr) & (size-1));
+
+ return ptr;
+}
+
+void jbd2_free(void *ptr, size_t size)
+{
+ if (size == PAGE_SIZE) {
+ free_pages((unsigned long)ptr, 0);
+ return;
+ }
+ if (size > PAGE_SIZE) {
+ int order = get_order(size);
+
+ if (order < 3)
+ free_pages((unsigned long)ptr, order);
+ else
+ vfree(ptr);
+ return;
+ }
+ kmem_cache_free(get_slab(size), ptr);
+};
+
+/*
* Journal_head storage management
*/
static struct kmem_cache *jbd2_journal_head_cache;
@@ -2204,6 +2335,7 @@ static void jbd2_journal_destroy_caches(void)
jbd2_journal_destroy_revoke_caches();
jbd2_journal_destroy_jbd2_journal_head_cache();
jbd2_journal_destroy_handle_cache();
+ jbd2_journal_destroy_slabs();
}
static int __init journal_init(void)
diff --git a/fs/jbd2/transaction.c b/fs/jbd2/transaction.c
index a0512700542f..bfc70f57900f 100644
--- a/fs/jbd2/transaction.c
+++ b/fs/jbd2/transaction.c
@@ -1727,6 +1727,21 @@ static int journal_unmap_buffer(journal_t *journal, struct buffer_head *bh)
if (!jh)
goto zap_buffer_no_jh;
+ /*
+ * We cannot remove the buffer from checkpoint lists until the
+ * transaction adding inode to orphan list (let's call it T)
+ * is committed. Otherwise if the transaction changing the
+ * buffer would be cleaned from the journal before T is
+ * committed, a crash will cause that the correct contents of
+ * the buffer will be lost. On the other hand we have to
+ * clear the buffer dirty bit at latest at the moment when the
+ * transaction marking the buffer as freed in the filesystem
+ * structures is committed because from that moment on the
+ * buffer can be reallocated and used by a different page.
+ * Since the block hasn't been freed yet but the inode has
+ * already been added to orphan list, it is safe for us to add
+ * the buffer to BJ_Forget list of the newest transaction.
+ */
transaction = jh->b_transaction;
if (transaction == NULL) {
/* First case: not on any transaction. If it
@@ -1783,16 +1798,15 @@ static int journal_unmap_buffer(journal_t *journal, struct buffer_head *bh)
} else if (transaction == journal->j_committing_transaction) {
JBUFFER_TRACE(jh, "on committing transaction");
/*
- * If it is committing, we simply cannot touch it. We
- * can remove it's next_transaction pointer from the
- * running transaction if that is set, but nothing
- * else. */
+ * The buffer is committing, we simply cannot touch
+ * it. So we just set j_next_transaction to the
+ * running transaction (if there is one) and mark
+ * buffer as freed so that commit code knows it should
+ * clear dirty bits when it is done with the buffer.
+ */
set_buffer_freed(bh);
- if (jh->b_next_transaction) {
- J_ASSERT(jh->b_next_transaction ==
- journal->j_running_transaction);
- jh->b_next_transaction = NULL;
- }
+ if (journal->j_running_transaction && buffer_jbddirty(bh))
+ jh->b_next_transaction = journal->j_running_transaction;
jbd2_journal_put_journal_head(jh);
spin_unlock(&journal->j_list_lock);
jbd_unlock_bh_state(bh);
@@ -1969,7 +1983,7 @@ void jbd2_journal_file_buffer(struct journal_head *jh,
*/
void __jbd2_journal_refile_buffer(struct journal_head *jh)
{
- int was_dirty;
+ int was_dirty, jlist;
struct buffer_head *bh = jh2bh(jh);
J_ASSERT_JH(jh, jbd_is_locked_bh_state(bh));
@@ -1991,8 +2005,13 @@ void __jbd2_journal_refile_buffer(struct journal_head *jh)
__jbd2_journal_temp_unlink_buffer(jh);
jh->b_transaction = jh->b_next_transaction;
jh->b_next_transaction = NULL;
- __jbd2_journal_file_buffer(jh, jh->b_transaction,
- jh->b_modified ? BJ_Metadata : BJ_Reserved);
+ if (buffer_freed(bh))
+ jlist = BJ_Forget;
+ else if (jh->b_modified)
+ jlist = BJ_Metadata;
+ else
+ jlist = BJ_Reserved;
+ __jbd2_journal_file_buffer(jh, jh->b_transaction, jlist);
J_ASSERT_JH(jh, jh->b_transaction->t_state == T_RUNNING);
if (was_dirty)
diff --git a/fs/jfs/inode.c b/fs/jfs/inode.c
index b2ae190a77ba..182b78cc3e62 100644
--- a/fs/jfs/inode.c
+++ b/fs/jfs/inode.c
@@ -22,6 +22,7 @@
#include <linux/buffer_head.h>
#include <linux/pagemap.h>
#include <linux/quotaops.h>
+#include <linux/writeback.h>
#include "jfs_incore.h"
#include "jfs_inode.h"
#include "jfs_filsys.h"
@@ -120,8 +121,10 @@ int jfs_commit_inode(struct inode *inode, int wait)
return rc;
}
-int jfs_write_inode(struct inode *inode, int wait)
+int jfs_write_inode(struct inode *inode, struct writeback_control *wbc)
{
+ int wait = wbc->sync_mode == WB_SYNC_ALL;
+
if (test_cflag(COMMIT_Nolink, inode))
return 0;
/*
diff --git a/fs/jfs/jfs_inode.h b/fs/jfs/jfs_inode.h
index 1eff7db34d63..15902b03c2a7 100644
--- a/fs/jfs/jfs_inode.h
+++ b/fs/jfs/jfs_inode.h
@@ -26,7 +26,7 @@ extern long jfs_ioctl(struct file *, unsigned int, unsigned long);
extern long jfs_compat_ioctl(struct file *, unsigned int, unsigned long);
extern struct inode *jfs_iget(struct super_block *, unsigned long);
extern int jfs_commit_inode(struct inode *, int);
-extern int jfs_write_inode(struct inode*, int);
+extern int jfs_write_inode(struct inode *, struct writeback_control *);
extern void jfs_delete_inode(struct inode *);
extern void jfs_dirty_inode(struct inode *);
extern void jfs_truncate(struct inode *);
diff --git a/fs/libfs.c b/fs/libfs.c
index 6e8d17e1dc4c..9e50bcf55857 100644
--- a/fs/libfs.c
+++ b/fs/libfs.c
@@ -338,28 +338,14 @@ int simple_readpage(struct file *file, struct page *page)
return 0;
}
-int simple_prepare_write(struct file *file, struct page *page,
- unsigned from, unsigned to)
-{
- if (!PageUptodate(page)) {
- if (to - from != PAGE_CACHE_SIZE)
- zero_user_segments(page,
- 0, from,
- to, PAGE_CACHE_SIZE);
- }
- return 0;
-}
-
int simple_write_begin(struct file *file, struct address_space *mapping,
loff_t pos, unsigned len, unsigned flags,
struct page **pagep, void **fsdata)
{
struct page *page;
pgoff_t index;
- unsigned from;
index = pos >> PAGE_CACHE_SHIFT;
- from = pos & (PAGE_CACHE_SIZE - 1);
page = grab_cache_page_write_begin(mapping, index, flags);
if (!page)
@@ -367,43 +353,59 @@ int simple_write_begin(struct file *file, struct address_space *mapping,
*pagep = page;
- return simple_prepare_write(file, page, from, from+len);
-}
-
-static int simple_commit_write(struct file *file, struct page *page,
- unsigned from, unsigned to)
-{
- struct inode *inode = page->mapping->host;
- loff_t pos = ((loff_t)page->index << PAGE_CACHE_SHIFT) + to;
+ if (!PageUptodate(page) && (len != PAGE_CACHE_SIZE)) {
+ unsigned from = pos & (PAGE_CACHE_SIZE - 1);
- if (!PageUptodate(page))
- SetPageUptodate(page);
- /*
- * No need to use i_size_read() here, the i_size
- * cannot change under us because we hold the i_mutex.
- */
- if (pos > inode->i_size)
- i_size_write(inode, pos);
- set_page_dirty(page);
+ zero_user_segments(page, 0, from, from + len, PAGE_CACHE_SIZE);
+ }
return 0;
}
+/**
+ * simple_write_end - .write_end helper for non-block-device FSes
+ * @available: See .write_end of address_space_operations
+ * @file: "
+ * @mapping: "
+ * @pos: "
+ * @len: "
+ * @copied: "
+ * @page: "
+ * @fsdata: "
+ *
+ * simple_write_end does the minimum needed for updating a page after writing is
+ * done. It has the same API signature as the .write_end of
+ * address_space_operations vector. So it can just be set onto .write_end for
+ * FSes that don't need any other processing. i_mutex is assumed to be held.
+ * Block based filesystems should use generic_write_end().
+ * NOTE: Even though i_size might get updated by this function, mark_inode_dirty
+ * is not called, so a filesystem that actually does store data in .write_inode
+ * should extend on what's done here with a call to mark_inode_dirty() in the
+ * case that i_size has changed.
+ */
int simple_write_end(struct file *file, struct address_space *mapping,
loff_t pos, unsigned len, unsigned copied,
struct page *page, void *fsdata)
{
- unsigned from = pos & (PAGE_CACHE_SIZE - 1);
+ struct inode *inode = page->mapping->host;
+ loff_t last_pos = pos + copied;
/* zero the stale part of the page if we did a short copy */
if (copied < len) {
- void *kaddr = kmap_atomic(page, KM_USER0);
- memset(kaddr + from + copied, 0, len - copied);
- flush_dcache_page(page);
- kunmap_atomic(kaddr, KM_USER0);
+ unsigned from = pos & (PAGE_CACHE_SIZE - 1);
+
+ zero_user(page, from + copied, len - copied);
}
- simple_commit_write(file, page, from, from+copied);
+ if (!PageUptodate(page))
+ SetPageUptodate(page);
+ /*
+ * No need to use i_size_read() here, the i_size
+ * cannot change under us because we hold the i_mutex.
+ */
+ if (last_pos > inode->i_size)
+ i_size_write(inode, last_pos);
+ set_page_dirty(page);
unlock_page(page);
page_cache_release(page);
@@ -853,7 +855,6 @@ EXPORT_SYMBOL(simple_getattr);
EXPORT_SYMBOL(simple_link);
EXPORT_SYMBOL(simple_lookup);
EXPORT_SYMBOL(simple_pin_fs);
-EXPORT_UNUSED_SYMBOL(simple_prepare_write);
EXPORT_SYMBOL(simple_readpage);
EXPORT_SYMBOL(simple_release_fs);
EXPORT_SYMBOL(simple_rename);
diff --git a/fs/locks.c b/fs/locks.c
index a8794f233bc9..ae9ded026b7c 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -1182,8 +1182,9 @@ int __break_lease(struct inode *inode, unsigned int mode)
struct file_lock *fl;
unsigned long break_time;
int i_have_this_lease = 0;
+ int want_write = (mode & O_ACCMODE) != O_RDONLY;
- new_fl = lease_alloc(NULL, mode & FMODE_WRITE ? F_WRLCK : F_RDLCK);
+ new_fl = lease_alloc(NULL, want_write ? F_WRLCK : F_RDLCK);
lock_kernel();
@@ -1197,7 +1198,7 @@ int __break_lease(struct inode *inode, unsigned int mode)
if (fl->fl_owner == current->files)
i_have_this_lease = 1;
- if (mode & FMODE_WRITE) {
+ if (want_write) {
/* If we want write access, we have to revoke any lease. */
future = F_UNLCK | F_INPROGRESS;
} else if (flock->fl_type & F_INPROGRESS) {
diff --git a/fs/minix/inode.c b/fs/minix/inode.c
index 74ea82d72164..756f8c93780c 100644
--- a/fs/minix/inode.c
+++ b/fs/minix/inode.c
@@ -17,8 +17,10 @@
#include <linux/init.h>
#include <linux/highuid.h>
#include <linux/vfs.h>
+#include <linux/writeback.h>
-static int minix_write_inode(struct inode * inode, int wait);
+static int minix_write_inode(struct inode *inode,
+ struct writeback_control *wbc);
static int minix_statfs(struct dentry *dentry, struct kstatfs *buf);
static int minix_remount (struct super_block * sb, int * flags, char * data);
@@ -552,7 +554,7 @@ static struct buffer_head * V2_minix_update_inode(struct inode * inode)
return bh;
}
-static int minix_write_inode(struct inode *inode, int wait)
+static int minix_write_inode(struct inode *inode, struct writeback_control *wbc)
{
int err = 0;
struct buffer_head *bh;
@@ -563,7 +565,7 @@ static int minix_write_inode(struct inode *inode, int wait)
bh = V2_minix_update_inode(inode);
if (!bh)
return -EIO;
- if (wait && buffer_dirty(bh)) {
+ if (wbc->sync_mode == WB_SYNC_ALL && buffer_dirty(bh)) {
sync_dirty_buffer(bh);
if (buffer_req(bh) && !buffer_uptodate(bh)) {
printk("IO error syncing minix inode [%s:%08lx]\n",
diff --git a/fs/namei.c b/fs/namei.c
index d62fdc875f22..9a6456099f1e 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -498,8 +498,6 @@ static int link_path_walk(const char *, struct nameidata *);
static __always_inline int __vfs_follow_link(struct nameidata *nd, const char *link)
{
- int res = 0;
- char *name;
if (IS_ERR(link))
goto fail;
@@ -510,22 +508,7 @@ static __always_inline int __vfs_follow_link(struct nameidata *nd, const char *l
path_get(&nd->root);
}
- res = link_path_walk(link, nd);
- if (nd->depth || res || nd->last_type!=LAST_NORM)
- return res;
- /*
- * If it is an iterative symlinks resolution in open_namei() we
- * have to copy the last component. And all that crap because of
- * bloody create() on broken symlinks. Furrfu...
- */
- name = __getname();
- if (unlikely(!name)) {
- path_put(&nd->path);
- return -ENOMEM;
- }
- strcpy(name, nd->last.name);
- nd->last.name = name;
- return 0;
+ return link_path_walk(link, nd);
fail:
path_put(&nd->path);
return PTR_ERR(link);
@@ -547,10 +530,10 @@ static inline void path_to_nameidata(struct path *path, struct nameidata *nd)
nd->path.dentry = path->dentry;
}
-static __always_inline int __do_follow_link(struct path *path, struct nameidata *nd)
+static __always_inline int
+__do_follow_link(struct path *path, struct nameidata *nd, void **p)
{
int error;
- void *cookie;
struct dentry *dentry = path->dentry;
touch_atime(path->mnt, dentry);
@@ -562,9 +545,9 @@ static __always_inline int __do_follow_link(struct path *path, struct nameidata
}
mntget(path->mnt);
nd->last_type = LAST_BIND;
- cookie = dentry->d_inode->i_op->follow_link(dentry, nd);
- error = PTR_ERR(cookie);
- if (!IS_ERR(cookie)) {
+ *p = dentry->d_inode->i_op->follow_link(dentry, nd);
+ error = PTR_ERR(*p);
+ if (!IS_ERR(*p)) {
char *s = nd_get_link(nd);
error = 0;
if (s)
@@ -574,8 +557,6 @@ static __always_inline int __do_follow_link(struct path *path, struct nameidata
if (error)
path_put(&nd->path);
}
- if (dentry->d_inode->i_op->put_link)
- dentry->d_inode->i_op->put_link(dentry, nd, cookie);
}
return error;
}
@@ -589,6 +570,7 @@ static __always_inline int __do_follow_link(struct path *path, struct nameidata
*/
static inline int do_follow_link(struct path *path, struct nameidata *nd)
{
+ void *cookie;
int err = -ELOOP;
if (current->link_count >= MAX_NESTED_LINKS)
goto loop;
@@ -602,7 +584,9 @@ static inline int do_follow_link(struct path *path, struct nameidata *nd)
current->link_count++;
current->total_link_count++;
nd->depth++;
- err = __do_follow_link(path, nd);
+ err = __do_follow_link(path, nd, &cookie);
+ if (!IS_ERR(cookie) && path->dentry->d_inode->i_op->put_link)
+ path->dentry->d_inode->i_op->put_link(path->dentry, nd, cookie);
path_put(path);
current->link_count--;
nd->depth--;
@@ -689,33 +673,20 @@ static __always_inline void follow_dotdot(struct nameidata *nd)
set_root(nd);
while(1) {
- struct vfsmount *parent;
struct dentry *old = nd->path.dentry;
if (nd->path.dentry == nd->root.dentry &&
nd->path.mnt == nd->root.mnt) {
break;
}
- spin_lock(&dcache_lock);
if (nd->path.dentry != nd->path.mnt->mnt_root) {
- nd->path.dentry = dget(nd->path.dentry->d_parent);
- spin_unlock(&dcache_lock);
+ /* rare case of legitimate dget_parent()... */
+ nd->path.dentry = dget_parent(nd->path.dentry);
dput(old);
break;
}
- spin_unlock(&dcache_lock);
- spin_lock(&vfsmount_lock);
- parent = nd->path.mnt->mnt_parent;
- if (parent == nd->path.mnt) {
- spin_unlock(&vfsmount_lock);
+ if (!follow_up(&nd->path))
break;
- }
- mntget(parent);
- nd->path.dentry = dget(nd->path.mnt->mnt_mountpoint);
- spin_unlock(&vfsmount_lock);
- dput(old);
- mntput(nd->path.mnt);
- nd->path.mnt = parent;
}
follow_mount(&nd->path);
}
@@ -823,6 +794,17 @@ fail:
}
/*
+ * This is a temporary kludge to deal with "automount" symlinks; proper
+ * solution is to trigger them on follow_mount(), so that do_lookup()
+ * would DTRT. To be killed before 2.6.34-final.
+ */
+static inline int follow_on_final(struct inode *inode, unsigned lookup_flags)
+{
+ return inode && unlikely(inode->i_op->follow_link) &&
+ ((lookup_flags & LOOKUP_FOLLOW) || S_ISDIR(inode->i_mode));
+}
+
+/*
* Name resolution.
* This is the basic name resolution function, turning a pathname into
* the final dentry. We expect 'base' to be positive and a directory.
@@ -942,8 +924,7 @@ last_component:
if (err)
break;
inode = next.dentry->d_inode;
- if ((lookup_flags & LOOKUP_FOLLOW)
- && inode && inode->i_op->follow_link) {
+ if (follow_on_final(inode, lookup_flags)) {
err = do_follow_link(&next, nd);
if (err)
goto return_err;
@@ -1337,7 +1318,7 @@ static int may_delete(struct inode *dir,struct dentry *victim,int isdir)
return -ENOENT;
BUG_ON(victim->d_parent->d_inode != dir);
- audit_inode_child(victim->d_name.name, victim, dir);
+ audit_inode_child(victim, dir);
error = inode_permission(dir, MAY_WRITE | MAY_EXEC);
if (error)
@@ -1378,22 +1359,6 @@ static inline int may_create(struct inode *dir, struct dentry *child)
return inode_permission(dir, MAY_WRITE | MAY_EXEC);
}
-/*
- * O_DIRECTORY translates into forcing a directory lookup.
- */
-static inline int lookup_flags(unsigned int f)
-{
- unsigned long retval = LOOKUP_FOLLOW;
-
- if (f & O_NOFOLLOW)
- retval &= ~LOOKUP_FOLLOW;
-
- if (f & O_DIRECTORY)
- retval |= LOOKUP_DIRECTORY;
-
- return retval;
-}
-
/*
* p1 and p2 should be directories on the same fs.
*/
@@ -1493,7 +1458,7 @@ int may_open(struct path *path, int acc_mode, int flag)
* An append-only file must be opened in append mode for writing.
*/
if (IS_APPEND(inode)) {
- if ((flag & FMODE_WRITE) && !(flag & O_APPEND))
+ if ((flag & O_ACCMODE) != O_RDONLY && !(flag & O_APPEND))
return -EPERM;
if (flag & O_TRUNC)
return -EPERM;
@@ -1537,7 +1502,7 @@ static int handle_truncate(struct path *path)
* what get passed to sys_open().
*/
static int __open_namei_create(struct nameidata *nd, struct path *path,
- int flag, int mode)
+ int open_flag, int mode)
{
int error;
struct dentry *dir = nd->path.dentry;
@@ -1555,7 +1520,7 @@ out_unlock:
if (error)
return error;
/* Don't check for write permission, don't truncate */
- return may_open(&nd->path, 0, flag & ~O_TRUNC);
+ return may_open(&nd->path, 0, open_flag & ~O_TRUNC);
}
/*
@@ -1593,129 +1558,135 @@ static int open_will_truncate(int flag, struct inode *inode)
return (flag & O_TRUNC);
}
-/*
- * Note that the low bits of the passed in "open_flag"
- * are not the same as in the local variable "flag". See
- * open_to_namei_flags() for more details.
- */
-struct file *do_filp_open(int dfd, const char *pathname,
- int open_flag, int mode, int acc_mode)
+static struct file *finish_open(struct nameidata *nd,
+ int open_flag, int acc_mode)
{
struct file *filp;
- struct nameidata nd;
- int error;
- struct path path;
- struct dentry *dir;
- int count = 0;
int will_truncate;
- int flag = open_to_namei_flags(open_flag);
- int force_reval = 0;
+ int error;
+ will_truncate = open_will_truncate(open_flag, nd->path.dentry->d_inode);
+ if (will_truncate) {
+ error = mnt_want_write(nd->path.mnt);
+ if (error)
+ goto exit;
+ }
+ error = may_open(&nd->path, acc_mode, open_flag);
+ if (error) {
+ if (will_truncate)
+ mnt_drop_write(nd->path.mnt);
+ goto exit;
+ }
+ filp = nameidata_to_filp(nd);
+ if (!IS_ERR(filp)) {
+ error = ima_file_check(filp, acc_mode);
+ if (error) {
+ fput(filp);
+ filp = ERR_PTR(error);
+ }
+ }
+ if (!IS_ERR(filp)) {
+ if (acc_mode & MAY_WRITE)
+ vfs_dq_init(nd->path.dentry->d_inode);
+
+ if (will_truncate) {
+ error = handle_truncate(&nd->path);
+ if (error) {
+ fput(filp);
+ filp = ERR_PTR(error);
+ }
+ }
+ }
/*
- * O_SYNC is implemented as __O_SYNC|O_DSYNC. As many places only
- * check for O_DSYNC if the need any syncing at all we enforce it's
- * always set instead of having to deal with possibly weird behaviour
- * for malicious applications setting only __O_SYNC.
+ * It is now safe to drop the mnt write
+ * because the filp has had a write taken
+ * on its behalf.
*/
- if (open_flag & __O_SYNC)
- open_flag |= O_DSYNC;
-
- if (!acc_mode)
- acc_mode = MAY_OPEN | ACC_MODE(open_flag);
+ if (will_truncate)
+ mnt_drop_write(nd->path.mnt);
+ return filp;
- /* O_TRUNC implies we need access checks for write permissions */
- if (flag & O_TRUNC)
- acc_mode |= MAY_WRITE;
+exit:
+ if (!IS_ERR(nd->intent.open.file))
+ release_open_intent(nd);
+ path_put(&nd->path);
+ return ERR_PTR(error);
+}
- /* Allow the LSM permission hook to distinguish append
- access from general write access. */
- if (flag & O_APPEND)
- acc_mode |= MAY_APPEND;
+static struct file *do_last(struct nameidata *nd, struct path *path,
+ int open_flag, int acc_mode,
+ int mode, const char *pathname,
+ int *want_dir)
+{
+ struct dentry *dir = nd->path.dentry;
+ struct file *filp;
+ int error = -EISDIR;
- /*
- * The simplest case - just a plain lookup.
- */
- if (!(flag & O_CREAT)) {
- filp = get_empty_filp();
-
- if (filp == NULL)
- return ERR_PTR(-ENFILE);
- nd.intent.open.file = filp;
- filp->f_flags = open_flag;
- nd.intent.open.flags = flag;
- nd.intent.open.create_mode = 0;
- error = do_path_lookup(dfd, pathname,
- lookup_flags(flag)|LOOKUP_OPEN, &nd);
- if (IS_ERR(nd.intent.open.file)) {
- if (error == 0) {
- error = PTR_ERR(nd.intent.open.file);
- path_put(&nd.path);
+ switch (nd->last_type) {
+ case LAST_DOTDOT:
+ follow_dotdot(nd);
+ dir = nd->path.dentry;
+ if (nd->path.mnt->mnt_sb->s_type->fs_flags & FS_REVAL_DOT) {
+ if (!dir->d_op->d_revalidate(dir, nd)) {
+ error = -ESTALE;
+ goto exit;
}
- } else if (error)
- release_open_intent(&nd);
- if (error)
- return ERR_PTR(error);
+ }
+ /* fallthrough */
+ case LAST_DOT:
+ case LAST_ROOT:
+ if (open_flag & O_CREAT)
+ goto exit;
+ /* fallthrough */
+ case LAST_BIND:
+ audit_inode(pathname, dir);
goto ok;
}
- /*
- * Create - we need to know the parent.
- */
-reval:
- error = path_init(dfd, pathname, LOOKUP_PARENT, &nd);
- if (error)
- return ERR_PTR(error);
- if (force_reval)
- nd.flags |= LOOKUP_REVAL;
- error = path_walk(pathname, &nd);
- if (error) {
- if (nd.root.mnt)
- path_put(&nd.root);
- return ERR_PTR(error);
+ /* trailing slashes? */
+ if (nd->last.name[nd->last.len]) {
+ if (open_flag & O_CREAT)
+ goto exit;
+ *want_dir = 1;
}
- if (unlikely(!audit_dummy_context()))
- audit_inode(pathname, nd.path.dentry);
- /*
- * We have the parent and last component. First of all, check
- * that we are not asked to creat(2) an obvious directory - that
- * will not do.
- */
- error = -EISDIR;
- if (nd.last_type != LAST_NORM || nd.last.name[nd.last.len])
- goto exit_parent;
+ /* just plain open? */
+ if (!(open_flag & O_CREAT)) {
+ error = do_lookup(nd, &nd->last, path);
+ if (error)
+ goto exit;
+ error = -ENOENT;
+ if (!path->dentry->d_inode)
+ goto exit_dput;
+ if (path->dentry->d_inode->i_op->follow_link)
+ return NULL;
+ error = -ENOTDIR;
+ if (*want_dir & !path->dentry->d_inode->i_op->lookup)
+ goto exit_dput;
+ path_to_nameidata(path, nd);
+ audit_inode(pathname, nd->path.dentry);
+ goto ok;
+ }
- error = -ENFILE;
- filp = get_empty_filp();
- if (filp == NULL)
- goto exit_parent;
- nd.intent.open.file = filp;
- filp->f_flags = open_flag;
- nd.intent.open.flags = flag;
- nd.intent.open.create_mode = mode;
- dir = nd.path.dentry;
- nd.flags &= ~LOOKUP_PARENT;
- nd.flags |= LOOKUP_CREATE | LOOKUP_OPEN;
- if (flag & O_EXCL)
- nd.flags |= LOOKUP_EXCL;
+ /* OK, it's O_CREAT */
mutex_lock(&dir->d_inode->i_mutex);
- path.dentry = lookup_hash(&nd);
- path.mnt = nd.path.mnt;
-do_last:
- error = PTR_ERR(path.dentry);
- if (IS_ERR(path.dentry)) {
+ path->dentry = lookup_hash(nd);
+ path->mnt = nd->path.mnt;
+
+ error = PTR_ERR(path->dentry);
+ if (IS_ERR(path->dentry)) {
mutex_unlock(&dir->d_inode->i_mutex);
goto exit;
}
- if (IS_ERR(nd.intent.open.file)) {
- error = PTR_ERR(nd.intent.open.file);
+ if (IS_ERR(nd->intent.open.file)) {
+ error = PTR_ERR(nd->intent.open.file);
goto exit_mutex_unlock;
}
/* Negative dentry, just create the file */
- if (!path.dentry->d_inode) {
+ if (!path->dentry->d_inode) {
/*
* This write is needed to ensure that a
* ro->rw transition does not occur between
@@ -1723,18 +1694,16 @@ do_last:
* a permanent write count is taken through
* the 'struct file' in nameidata_to_filp().
*/
- error = mnt_want_write(nd.path.mnt);
+ error = mnt_want_write(nd->path.mnt);
if (error)
goto exit_mutex_unlock;
- error = __open_namei_create(&nd, &path, flag, mode);
+ error = __open_namei_create(nd, path, open_flag, mode);
if (error) {
- mnt_drop_write(nd.path.mnt);
+ mnt_drop_write(nd->path.mnt);
goto exit;
}
- filp = nameidata_to_filp(&nd);
- mnt_drop_write(nd.path.mnt);
- if (nd.root.mnt)
- path_put(&nd.root);
+ filp = nameidata_to_filp(nd);
+ mnt_drop_write(nd->path.mnt);
if (!IS_ERR(filp)) {
error = ima_file_check(filp, acc_mode);
if (error) {
@@ -1749,150 +1718,181 @@ do_last:
* It already exists.
*/
mutex_unlock(&dir->d_inode->i_mutex);
- audit_inode(pathname, path.dentry);
+ audit_inode(pathname, path->dentry);
error = -EEXIST;
- if (flag & O_EXCL)
+ if (open_flag & O_EXCL)
goto exit_dput;
- if (__follow_mount(&path)) {
+ if (__follow_mount(path)) {
error = -ELOOP;
- if (flag & O_NOFOLLOW)
+ if (open_flag & O_NOFOLLOW)
goto exit_dput;
}
error = -ENOENT;
- if (!path.dentry->d_inode)
+ if (!path->dentry->d_inode)
goto exit_dput;
- if (path.dentry->d_inode->i_op->follow_link)
- goto do_link;
- path_to_nameidata(&path, &nd);
+ if (path->dentry->d_inode->i_op->follow_link)
+ return NULL;
+
+ path_to_nameidata(path, nd);
error = -EISDIR;
- if (S_ISDIR(path.dentry->d_inode->i_mode))
+ if (S_ISDIR(path->dentry->d_inode->i_mode))
goto exit;
ok:
+ filp = finish_open(nd, open_flag, acc_mode);
+ return filp;
+
+exit_mutex_unlock:
+ mutex_unlock(&dir->d_inode->i_mutex);
+exit_dput:
+ path_put_conditional(path, nd);
+exit:
+ if (!IS_ERR(nd->intent.open.file))
+ release_open_intent(nd);
+ path_put(&nd->path);
+ return ERR_PTR(error);
+}
+
+/*
+ * Note that the low bits of the passed in "open_flag"
+ * are not the same as in the local variable "flag". See
+ * open_to_namei_flags() for more details.
+ */
+struct file *do_filp_open(int dfd, const char *pathname,
+ int open_flag, int mode, int acc_mode)
+{
+ struct file *filp;
+ struct nameidata nd;
+ int error;
+ struct path path;
+ int count = 0;
+ int flag = open_to_namei_flags(open_flag);
+ int force_reval = 0;
+ int want_dir = open_flag & O_DIRECTORY;
+
+ if (!(open_flag & O_CREAT))
+ mode = 0;
+
/*
- * Consider:
- * 1. may_open() truncates a file
- * 2. a rw->ro mount transition occurs
- * 3. nameidata_to_filp() fails due to
- * the ro mount.
- * That would be inconsistent, and should
- * be avoided. Taking this mnt write here
- * ensures that (2) can not occur.
+ * O_SYNC is implemented as __O_SYNC|O_DSYNC. As many places only
+ * check for O_DSYNC if the need any syncing at all we enforce it's
+ * always set instead of having to deal with possibly weird behaviour
+ * for malicious applications setting only __O_SYNC.
*/
- will_truncate = open_will_truncate(flag, nd.path.dentry->d_inode);
- if (will_truncate) {
- error = mnt_want_write(nd.path.mnt);
- if (error)
- goto exit;
- }
- error = may_open(&nd.path, acc_mode, flag);
+ if (open_flag & __O_SYNC)
+ open_flag |= O_DSYNC;
+
+ if (!acc_mode)
+ acc_mode = MAY_OPEN | ACC_MODE(open_flag);
+
+ /* O_TRUNC implies we need access checks for write permissions */
+ if (open_flag & O_TRUNC)
+ acc_mode |= MAY_WRITE;
+
+ /* Allow the LSM permission hook to distinguish append
+ access from general write access. */
+ if (open_flag & O_APPEND)
+ acc_mode |= MAY_APPEND;
+
+ /* find the parent */
+reval:
+ error = path_init(dfd, pathname, LOOKUP_PARENT, &nd);
+ if (error)
+ return ERR_PTR(error);
+ if (force_reval)
+ nd.flags |= LOOKUP_REVAL;
+
+ current->total_link_count = 0;
+ error = link_path_walk(pathname, &nd);
if (error) {
- if (will_truncate)
- mnt_drop_write(nd.path.mnt);
- goto exit;
- }
- filp = nameidata_to_filp(&nd);
- if (!IS_ERR(filp)) {
- error = ima_file_check(filp, acc_mode);
- if (error) {
- fput(filp);
- filp = ERR_PTR(error);
- }
+ filp = ERR_PTR(error);
+ goto out;
}
- if (!IS_ERR(filp)) {
- if (acc_mode & MAY_WRITE)
- vfs_dq_init(nd.path.dentry->d_inode);
+ if (unlikely(!audit_dummy_context()) && (open_flag & O_CREAT))
+ audit_inode(pathname, nd.path.dentry);
- if (will_truncate) {
- error = handle_truncate(&nd.path);
- if (error) {
- fput(filp);
- filp = ERR_PTR(error);
- }
- }
- }
/*
- * It is now safe to drop the mnt write
- * because the filp has had a write taken
- * on its behalf.
+ * We have the parent and last component.
*/
- if (will_truncate)
- mnt_drop_write(nd.path.mnt);
+
+ error = -ENFILE;
+ filp = get_empty_filp();
+ if (filp == NULL)
+ goto exit_parent;
+ nd.intent.open.file = filp;
+ filp->f_flags = open_flag;
+ nd.intent.open.flags = flag;
+ nd.intent.open.create_mode = mode;
+ nd.flags &= ~LOOKUP_PARENT;
+ nd.flags |= LOOKUP_OPEN;
+ if (open_flag & O_CREAT) {
+ nd.flags |= LOOKUP_CREATE;
+ if (open_flag & O_EXCL)
+ nd.flags |= LOOKUP_EXCL;
+ }
+ filp = do_last(&nd, &path, open_flag, acc_mode, mode, pathname, &want_dir);
+ while (unlikely(!filp)) { /* trailing symlink */
+ struct path holder;
+ struct inode *inode = path.dentry->d_inode;
+ void *cookie;
+ error = -ELOOP;
+ /* S_ISDIR part is a temporary automount kludge */
+ if ((open_flag & O_NOFOLLOW) && !S_ISDIR(inode->i_mode))
+ goto exit_dput;
+ if (count++ == 32)
+ goto exit_dput;
+ /*
+ * This is subtle. Instead of calling do_follow_link() we do
+ * the thing by hands. The reason is that this way we have zero
+ * link_count and path_walk() (called from ->follow_link)
+ * honoring LOOKUP_PARENT. After that we have the parent and
+ * last component, i.e. we are in the same situation as after
+ * the first path_walk(). Well, almost - if the last component
+ * is normal we get its copy stored in nd->last.name and we will
+ * have to putname() it when we are done. Procfs-like symlinks
+ * just set LAST_BIND.
+ */
+ nd.flags |= LOOKUP_PARENT;
+ error = security_inode_follow_link(path.dentry, &nd);
+ if (error)
+ goto exit_dput;
+ error = __do_follow_link(&path, &nd, &cookie);
+ if (unlikely(error)) {
+ /* nd.path had been dropped */
+ if (!IS_ERR(cookie) && inode->i_op->put_link)
+ inode->i_op->put_link(path.dentry, &nd, cookie);
+ path_put(&path);
+ release_open_intent(&nd);
+ filp = ERR_PTR(error);
+ goto out;
+ }
+ holder = path;
+ nd.flags &= ~LOOKUP_PARENT;
+ filp = do_last(&nd, &path, open_flag, acc_mode, mode, pathname, &want_dir);
+ if (inode->i_op->put_link)
+ inode->i_op->put_link(holder.dentry, &nd, cookie);
+ path_put(&holder);
+ }
+out:
if (nd.root.mnt)
path_put(&nd.root);
+ if (filp == ERR_PTR(-ESTALE) && !force_reval) {
+ force_reval = 1;
+ goto reval;
+ }
return filp;
-exit_mutex_unlock:
- mutex_unlock(&dir->d_inode->i_mutex);
exit_dput:
path_put_conditional(&path, &nd);
-exit:
if (!IS_ERR(nd.intent.open.file))
release_open_intent(&nd);
exit_parent:
- if (nd.root.mnt)
- path_put(&nd.root);
path_put(&nd.path);
- return ERR_PTR(error);
-
-do_link:
- error = -ELOOP;
- if (flag & O_NOFOLLOW)
- goto exit_dput;
- /*
- * This is subtle. Instead of calling do_follow_link() we do the
- * thing by hands. The reason is that this way we have zero link_count
- * and path_walk() (called from ->follow_link) honoring LOOKUP_PARENT.
- * After that we have the parent and last component, i.e.
- * we are in the same situation as after the first path_walk().
- * Well, almost - if the last component is normal we get its copy
- * stored in nd->last.name and we will have to putname() it when we
- * are done. Procfs-like symlinks just set LAST_BIND.
- */
- nd.flags |= LOOKUP_PARENT;
- error = security_inode_follow_link(path.dentry, &nd);
- if (error)
- goto exit_dput;
- error = __do_follow_link(&path, &nd);
- path_put(&path);
- if (error) {
- /* Does someone understand code flow here? Or it is only
- * me so stupid? Anathema to whoever designed this non-sense
- * with "intent.open".
- */
- release_open_intent(&nd);
- if (nd.root.mnt)
- path_put(&nd.root);
- if (error == -ESTALE && !force_reval) {
- force_reval = 1;
- goto reval;
- }
- return ERR_PTR(error);
- }
- nd.flags &= ~LOOKUP_PARENT;
- if (nd.last_type == LAST_BIND)
- goto ok;
- error = -EISDIR;
- if (nd.last_type != LAST_NORM)
- goto exit;
- if (nd.last.name[nd.last.len]) {
- __putname(nd.last.name);
- goto exit;
- }
- error = -ELOOP;
- if (count++==32) {
- __putname(nd.last.name);
- goto exit;
- }
- dir = nd.path.dentry;
- mutex_lock(&dir->d_inode->i_mutex);
- path.dentry = lookup_hash(&nd);
- path.mnt = nd.path.mnt;
- __putname(nd.last.name);
- goto do_last;
+ filp = ERR_PTR(error);
+ goto out;
}
/**
@@ -2265,8 +2265,11 @@ int vfs_unlink(struct inode *dir, struct dentry *dentry)
error = -EBUSY;
else {
error = security_inode_unlink(dir, dentry);
- if (!error)
+ if (!error) {
error = dir->i_op->unlink(dir, dentry);
+ if (!error)
+ dentry->d_inode->i_flags |= S_DEAD;
+ }
}
mutex_unlock(&dentry->d_inode->i_mutex);
@@ -2619,6 +2622,8 @@ static int vfs_rename_other(struct inode *old_dir, struct dentry *old_dentry,
else
error = old_dir->i_op->rename(old_dir, old_dentry, new_dir, new_dentry);
if (!error) {
+ if (target)
+ target->i_flags |= S_DEAD;
if (!(old_dir->i_sb->s_type->fs_flags & FS_RENAME_DOES_D_MOVE))
d_move(old_dentry, new_dentry);
}
@@ -2661,11 +2666,9 @@ int vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
error = vfs_rename_dir(old_dir,old_dentry,new_dir,new_dentry);
else
error = vfs_rename_other(old_dir,old_dentry,new_dir,new_dentry);
- if (!error) {
- const char *new_name = old_dentry->d_name.name;
- fsnotify_move(old_dir, new_dir, old_name, new_name, is_dir,
+ if (!error)
+ fsnotify_move(old_dir, new_dir, old_name, is_dir,
new_dentry->d_inode, old_dentry);
- }
fsnotify_oldname_free(old_name);
return error;
diff --git a/fs/namespace.c b/fs/namespace.c
index c768f733c8d6..8174c8ab5c70 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -573,7 +573,7 @@ static struct vfsmount *clone_mnt(struct vfsmount *old, struct dentry *root,
mnt->mnt_master = old;
CLEAR_MNT_SHARED(mnt);
} else if (!(flag & CL_PRIVATE)) {
- if ((flag & CL_PROPAGATION) || IS_MNT_SHARED(old))
+ if ((flag & CL_MAKE_SHARED) || IS_MNT_SHARED(old))
list_add(&mnt->mnt_share, &old->mnt_share);
if (IS_MNT_SLAVE(old))
list_add(&mnt->mnt_slave, &old->mnt_slave);
@@ -737,6 +737,21 @@ static void m_stop(struct seq_file *m, void *v)
up_read(&namespace_sem);
}
+int mnt_had_events(struct proc_mounts *p)
+{
+ struct mnt_namespace *ns = p->ns;
+ int res = 0;
+
+ spin_lock(&vfsmount_lock);
+ if (p->event != ns->event) {
+ p->event = ns->event;
+ res = 1;
+ }
+ spin_unlock(&vfsmount_lock);
+
+ return res;
+}
+
struct proc_fs_info {
int flag;
const char *str;
@@ -1121,8 +1136,15 @@ SYSCALL_DEFINE2(umount, char __user *, name, int, flags)
{
struct path path;
int retval;
+ int lookup_flags = 0;
- retval = user_path(name, &path);
+ if (flags & ~(MNT_FORCE | MNT_DETACH | MNT_EXPIRE | UMOUNT_NOFOLLOW))
+ return -EINVAL;
+
+ if (!(flags & UMOUNT_NOFOLLOW))
+ lookup_flags |= LOOKUP_FOLLOW;
+
+ retval = user_path_at(AT_FDCWD, name, lookup_flags, &path);
if (retval)
goto out;
retval = -EINVAL;
@@ -1246,6 +1268,21 @@ void drop_collected_mounts(struct vfsmount *mnt)
release_mounts(&umount_list);
}
+int iterate_mounts(int (*f)(struct vfsmount *, void *), void *arg,
+ struct vfsmount *root)
+{
+ struct vfsmount *mnt;
+ int res = f(root, arg);
+ if (res)
+ return res;
+ list_for_each_entry(mnt, &root->mnt_list, mnt_list) {
+ res = f(mnt, arg);
+ if (res)
+ return res;
+ }
+ return 0;
+}
+
static void cleanup_group_ids(struct vfsmount *mnt, struct vfsmount *end)
{
struct vfsmount *p;
@@ -1538,7 +1575,7 @@ static int do_remount(struct path *path, int flags, int mnt_flags,
err = do_remount_sb(sb, flags, data, 0);
if (!err) {
spin_lock(&vfsmount_lock);
- mnt_flags |= path->mnt->mnt_flags & MNT_PNODE_MASK;
+ mnt_flags |= path->mnt->mnt_flags & MNT_PROPAGATION_MASK;
path->mnt->mnt_flags = mnt_flags;
spin_unlock(&vfsmount_lock);
}
@@ -1671,7 +1708,7 @@ int do_add_mount(struct vfsmount *newmnt, struct path *path,
{
int err;
- mnt_flags &= ~(MNT_SHARED | MNT_WRITE_HOLD);
+ mnt_flags &= ~(MNT_SHARED | MNT_WRITE_HOLD | MNT_INTERNAL);
down_write(&namespace_sem);
/* Something was mounted here while we slept */
@@ -2314,17 +2351,13 @@ void __init mnt_init(void)
void put_mnt_ns(struct mnt_namespace *ns)
{
- struct vfsmount *root;
LIST_HEAD(umount_list);
- if (!atomic_dec_and_lock(&ns->count, &vfsmount_lock))
+ if (!atomic_dec_and_test(&ns->count))
return;
- root = ns->root;
- ns->root = NULL;
- spin_unlock(&vfsmount_lock);
down_write(&namespace_sem);
spin_lock(&vfsmount_lock);
- umount_tree(root, 0, &umount_list);
+ umount_tree(ns->root, 0, &umount_list);
spin_unlock(&vfsmount_lock);
up_write(&namespace_sem);
release_mounts(&umount_list);
diff --git a/fs/nfs/Kconfig b/fs/nfs/Kconfig
index 59e5673b4597..a43d07e7b924 100644
--- a/fs/nfs/Kconfig
+++ b/fs/nfs/Kconfig
@@ -95,8 +95,7 @@ config ROOT_NFS
Most people say N here.
config NFS_FSCACHE
- bool "Provide NFS client caching support (EXPERIMENTAL)"
- depends on EXPERIMENTAL
+ bool "Provide NFS client caching support"
depends on NFS_FS=m && FSCACHE || NFS_FS=y && FSCACHE=y
help
Say Y here if you want NFS data to be cached locally on disc through
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 3c7f03b669fb..a1f6b4438fb1 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -560,7 +560,7 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
desc->entry = &my_entry;
nfs_block_sillyrename(dentry);
- res = nfs_revalidate_mapping_nolock(inode, filp->f_mapping);
+ res = nfs_revalidate_mapping(inode, filp->f_mapping);
if (res < 0)
goto out;
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index e1d415e97849..0d289823e856 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -342,6 +342,7 @@ static ssize_t nfs_direct_read_schedule_segment(struct nfs_direct_req *dreq,
data->res.fattr = &data->fattr;
data->res.eof = 0;
data->res.count = bytes;
+ nfs_fattr_init(&data->fattr);
msg.rpc_argp = &data->args;
msg.rpc_resp = &data->res;
@@ -575,6 +576,7 @@ static void nfs_direct_commit_schedule(struct nfs_direct_req *dreq)
data->res.count = 0;
data->res.fattr = &data->fattr;
data->res.verf = &data->verf;
+ nfs_fattr_init(&data->fattr);
NFS_PROTO(data->inode)->commit_setup(data, &msg);
@@ -766,6 +768,7 @@ static ssize_t nfs_direct_write_schedule_segment(struct nfs_direct_req *dreq,
data->res.fattr = &data->fattr;
data->res.count = bytes;
data->res.verf = &data->verf;
+ nfs_fattr_init(&data->fattr);
task_setup_data.task = &data->task;
task_setup_data.callback_data = data;
diff --git a/fs/nfs/fscache.c b/fs/nfs/fscache.c
index fa588006588d..237874f1af23 100644
--- a/fs/nfs/fscache.c
+++ b/fs/nfs/fscache.c
@@ -354,12 +354,11 @@ void nfs_fscache_reset_inode_cookie(struct inode *inode)
*/
int nfs_fscache_release_page(struct page *page, gfp_t gfp)
{
- struct nfs_inode *nfsi = NFS_I(page->mapping->host);
- struct fscache_cookie *cookie = nfsi->fscache;
-
- BUG_ON(!cookie);
-
if (PageFsCache(page)) {
+ struct nfs_inode *nfsi = NFS_I(page->mapping->host);
+ struct fscache_cookie *cookie = nfsi->fscache;
+
+ BUG_ON(!cookie);
dfprintk(FSCACHE, "NFS: fscache releasepage (0x%p/0x%p/0x%p)\n",
cookie, page, nfsi);
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 87cca56846d6..657201acda84 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -97,22 +97,6 @@ u64 nfs_compat_user_ino64(u64 fileid)
return ino;
}
-int nfs_write_inode(struct inode *inode, int sync)
-{
- int ret;
-
- if (sync) {
- ret = filemap_fdatawait(inode->i_mapping);
- if (ret == 0)
- ret = nfs_commit_inode(inode, FLUSH_SYNC);
- } else
- ret = nfs_commit_inode(inode, 0);
- if (ret >= 0)
- return 0;
- __mark_inode_dirty(inode, I_DIRTY_DATASYNC);
- return ret;
-}
-
void nfs_clear_inode(struct inode *inode)
{
/*
@@ -130,16 +114,12 @@ void nfs_clear_inode(struct inode *inode)
*/
int nfs_sync_mapping(struct address_space *mapping)
{
- int ret;
+ int ret = 0;
- if (mapping->nrpages == 0)
- return 0;
- unmap_mapping_range(mapping, 0, 0, 0);
- ret = filemap_write_and_wait(mapping);
- if (ret != 0)
- goto out;
- ret = nfs_wb_all(mapping->host);
-out:
+ if (mapping->nrpages != 0) {
+ unmap_mapping_range(mapping, 0, 0, 0);
+ ret = nfs_wb_all(mapping->host);
+ }
return ret;
}
@@ -511,17 +491,11 @@ int nfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
int need_atime = NFS_I(inode)->cache_validity & NFS_INO_INVALID_ATIME;
int err;
- /*
- * Flush out writes to the server in order to update c/mtime.
- *
- * Hold the i_mutex to suspend application writes temporarily;
- * this prevents long-running writing applications from blocking
- * nfs_wb_nocommit.
- */
+ /* Flush out writes to the server in order to update c/mtime. */
if (S_ISREG(inode->i_mode)) {
- mutex_lock(&inode->i_mutex);
- nfs_wb_nocommit(inode);
- mutex_unlock(&inode->i_mutex);
+ err = filemap_write_and_wait(inode->i_mapping);
+ if (err)
+ goto out;
}
/*
@@ -545,6 +519,7 @@ int nfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
generic_fillattr(inode, stat);
stat->ino = nfs_compat_user_ino64(NFS_FILEID(inode));
}
+out:
return err;
}
@@ -574,14 +549,14 @@ void nfs_close_context(struct nfs_open_context *ctx, int is_sync)
nfs_revalidate_inode(server, inode);
}
-static struct nfs_open_context *alloc_nfs_open_context(struct vfsmount *mnt, struct dentry *dentry, struct rpc_cred *cred)
+static struct nfs_open_context *alloc_nfs_open_context(struct path *path, struct rpc_cred *cred)
{
struct nfs_open_context *ctx;
ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
if (ctx != NULL) {
- ctx->path.dentry = dget(dentry);
- ctx->path.mnt = mntget(mnt);
+ ctx->path = *path;
+ path_get(&ctx->path);
ctx->cred = get_rpccred(cred);
ctx->state = NULL;
ctx->lockowner = current->files;
@@ -681,7 +656,7 @@ int nfs_open(struct inode *inode, struct file *filp)
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- ctx = alloc_nfs_open_context(filp->f_path.mnt, filp->f_path.dentry, cred);
+ ctx = alloc_nfs_open_context(&filp->f_path, cred);
put_rpccred(cred);
if (ctx == NULL)
return -ENOMEM;
@@ -774,7 +749,7 @@ int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
return __nfs_revalidate_inode(server, inode);
}
-static int nfs_invalidate_mapping_nolock(struct inode *inode, struct address_space *mapping)
+static int nfs_invalidate_mapping(struct inode *inode, struct address_space *mapping)
{
struct nfs_inode *nfsi = NFS_I(inode);
@@ -795,49 +770,10 @@ static int nfs_invalidate_mapping_nolock(struct inode *inode, struct address_spa
return 0;
}
-static int nfs_invalidate_mapping(struct inode *inode, struct address_space *mapping)
-{
- int ret = 0;
-
- mutex_lock(&inode->i_mutex);
- if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_DATA) {
- ret = nfs_sync_mapping(mapping);
- if (ret == 0)
- ret = nfs_invalidate_mapping_nolock(inode, mapping);
- }
- mutex_unlock(&inode->i_mutex);
- return ret;
-}
-
-/**
- * nfs_revalidate_mapping_nolock - Revalidate the pagecache
- * @inode - pointer to host inode
- * @mapping - pointer to mapping
- */
-int nfs_revalidate_mapping_nolock(struct inode *inode, struct address_space *mapping)
-{
- struct nfs_inode *nfsi = NFS_I(inode);
- int ret = 0;
-
- if ((nfsi->cache_validity & NFS_INO_REVAL_PAGECACHE)
- || nfs_attribute_timeout(inode) || NFS_STALE(inode)) {
- ret = __nfs_revalidate_inode(NFS_SERVER(inode), inode);
- if (ret < 0)
- goto out;
- }
- if (nfsi->cache_validity & NFS_INO_INVALID_DATA)
- ret = nfs_invalidate_mapping_nolock(inode, mapping);
-out:
- return ret;
-}
-
/**
* nfs_revalidate_mapping - Revalidate the pagecache
* @inode - pointer to host inode
* @mapping - pointer to mapping
- *
- * This version of the function will take the inode->i_mutex and attempt to
- * flush out all dirty data if it needs to invalidate the page cache.
*/
int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping)
{
@@ -1415,6 +1351,7 @@ static void init_once(void *foo)
INIT_LIST_HEAD(&nfsi->access_cache_inode_lru);
INIT_RADIX_TREE(&nfsi->nfs_page_tree, GFP_ATOMIC);
nfsi->npages = 0;
+ nfsi->ncommit = 0;
atomic_set(&nfsi->silly_count, 1);
INIT_HLIST_HEAD(&nfsi->silly_list);
init_waitqueue_head(&nfsi->waitqueue);
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 29e464d23b32..11f82f03c5de 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -211,7 +211,7 @@ extern int nfs_access_cache_shrinker(int nr_to_scan, gfp_t gfp_mask);
extern struct workqueue_struct *nfsiod_workqueue;
extern struct inode *nfs_alloc_inode(struct super_block *sb);
extern void nfs_destroy_inode(struct inode *);
-extern int nfs_write_inode(struct inode *,int);
+extern int nfs_write_inode(struct inode *, struct writeback_control *);
extern void nfs_clear_inode(struct inode *);
#ifdef CONFIG_NFS_V4
extern void nfs4_clear_inode(struct inode *);
diff --git a/fs/nfs/iostat.h b/fs/nfs/iostat.h
index 46d779abafd3..1d8d5c813b01 100644
--- a/fs/nfs/iostat.h
+++ b/fs/nfs/iostat.h
@@ -57,12 +57,12 @@ static inline void nfs_add_fscache_stats(struct inode *inode,
}
#endif
-static inline struct nfs_iostats *nfs_alloc_iostats(void)
+static inline struct nfs_iostats __percpu *nfs_alloc_iostats(void)
{
return alloc_percpu(struct nfs_iostats);
}
-static inline void nfs_free_iostats(struct nfs_iostats *stats)
+static inline void nfs_free_iostats(struct nfs_iostats __percpu *stats)
{
if (stats != NULL)
free_percpu(stats);
diff --git a/fs/nfs/mount_clnt.c b/fs/nfs/mount_clnt.c
index 0adefc40cc89..59047f8d7d72 100644
--- a/fs/nfs/mount_clnt.c
+++ b/fs/nfs/mount_clnt.c
@@ -120,7 +120,7 @@ static struct {
{ .status = MNT3ERR_INVAL, .errno = -EINVAL, },
{ .status = MNT3ERR_NAMETOOLONG, .errno = -ENAMETOOLONG, },
{ .status = MNT3ERR_NOTSUPP, .errno = -ENOTSUPP, },
- { .status = MNT3ERR_SERVERFAULT, .errno = -ESERVERFAULT, },
+ { .status = MNT3ERR_SERVERFAULT, .errno = -EREMOTEIO, },
};
struct mountres {
diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c
index 5e078b222b4e..7bc2da8efd4a 100644
--- a/fs/nfs/nfs2xdr.c
+++ b/fs/nfs/nfs2xdr.c
@@ -699,7 +699,7 @@ static struct {
{ NFSERR_BAD_COOKIE, -EBADCOOKIE },
{ NFSERR_NOTSUPP, -ENOTSUPP },
{ NFSERR_TOOSMALL, -ETOOSMALL },
- { NFSERR_SERVERFAULT, -ESERVERFAULT },
+ { NFSERR_SERVERFAULT, -EREMOTEIO },
{ NFSERR_BADTYPE, -EBADTYPE },
{ NFSERR_JUKEBOX, -EJUKEBOX },
{ -1, -EIO }
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index adc116c57e14..eda74c42d552 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -726,8 +726,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid);
if (p->o_arg.seqid == NULL)
goto err_free;
- p->path.mnt = mntget(path->mnt);
- p->path.dentry = dget(path->dentry);
+ path_get(path);
+ p->path = *path;
p->dir = parent;
p->owner = sp;
atomic_inc(&sp->so_count);
@@ -1947,8 +1947,8 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->res.seqid = calldata->arg.seqid;
calldata->res.server = server;
calldata->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE;
- calldata->path.mnt = mntget(path->mnt);
- calldata->path.dentry = dget(path->dentry);
+ path_get(path);
+ calldata->path = *path;
msg.rpc_argp = &calldata->arg,
msg.rpc_resp = &calldata->res,
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 020ebf151184..4d338be492cb 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -4639,7 +4639,7 @@ static int decode_sequence(struct xdr_stream *xdr,
* If the server returns different values for sessionID, slotID or
* sequence number, the server is looney tunes.
*/
- status = -ESERVERFAULT;
+ status = -EREMOTEIO;
if (memcmp(id.data, res->sr_session->sess_id.data,
NFS4_MAX_SESSIONID_LEN)) {
@@ -5782,7 +5782,7 @@ static struct {
{ NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
{ NFS4ERR_NOTSUPP, -ENOTSUPP },
{ NFS4ERR_TOOSMALL, -ETOOSMALL },
- { NFS4ERR_SERVERFAULT, -ESERVERFAULT },
+ { NFS4ERR_SERVERFAULT, -EREMOTEIO },
{ NFS4ERR_BADTYPE, -EBADTYPE },
{ NFS4ERR_LOCKED, -EAGAIN },
{ NFS4ERR_SYMLINK, -ELOOP },
@@ -5809,7 +5809,7 @@ nfs4_stat_to_errno(int stat)
}
if (stat <= 10000 || stat > 10100) {
/* The server is looney tunes. */
- return -ESERVERFAULT;
+ return -EREMOTEIO;
}
/* If we cannot translate the error, the recovery routines should
* handle it.
diff --git a/fs/nfs/symlink.c b/fs/nfs/symlink.c
index 412738dbfbc7..2ea9e5c27e55 100644
--- a/fs/nfs/symlink.c
+++ b/fs/nfs/symlink.c
@@ -50,7 +50,7 @@ static void *nfs_follow_link(struct dentry *dentry, struct nameidata *nd)
struct page *page;
void *err;
- err = ERR_PTR(nfs_revalidate_mapping_nolock(inode, inode->i_mapping));
+ err = ERR_PTR(nfs_revalidate_mapping(inode, inode->i_mapping));
if (err)
goto read_failed;
page = read_cache_page(&inode->i_data, 0,
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 7b54b8bb101f..53ff70e23993 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -438,6 +438,7 @@ nfs_mark_request_commit(struct nfs_page *req)
radix_tree_tag_set(&nfsi->nfs_page_tree,
req->wb_index,
NFS_PAGE_TAG_COMMIT);
+ nfsi->ncommit++;
spin_unlock(&inode->i_lock);
inc_zone_page_state(req->wb_page, NR_UNSTABLE_NFS);
inc_bdi_stat(req->wb_page->mapping->backing_dev_info, BDI_RECLAIMABLE);
@@ -501,57 +502,6 @@ int nfs_reschedule_unstable_write(struct nfs_page *req)
}
#endif
-/*
- * Wait for a request to complete.
- *
- * Interruptible by fatal signals only.
- */
-static int nfs_wait_on_requests_locked(struct inode *inode, pgoff_t idx_start, unsigned int npages)
-{
- struct nfs_inode *nfsi = NFS_I(inode);
- struct nfs_page *req;
- pgoff_t idx_end, next;
- unsigned int res = 0;
- int error;
-
- if (npages == 0)
- idx_end = ~0;
- else
- idx_end = idx_start + npages - 1;
-
- next = idx_start;
- while (radix_tree_gang_lookup_tag(&nfsi->nfs_page_tree, (void **)&req, next, 1, NFS_PAGE_TAG_LOCKED)) {
- if (req->wb_index > idx_end)
- break;
-
- next = req->wb_index + 1;
- BUG_ON(!NFS_WBACK_BUSY(req));
-
- kref_get(&req->wb_kref);
- spin_unlock(&inode->i_lock);
- error = nfs_wait_on_request(req);
- nfs_release_request(req);
- spin_lock(&inode->i_lock);
- if (error < 0)
- return error;
- res++;
- }
- return res;
-}
-
-static void nfs_cancel_commit_list(struct list_head *head)
-{
- struct nfs_page *req;
-
- while(!list_empty(head)) {
- req = nfs_list_entry(head->next);
- nfs_list_remove_request(req);
- nfs_clear_request_commit(req);
- nfs_inode_remove_request(req);
- nfs_unlock_request(req);
- }
-}
-
#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
static int
nfs_need_commit(struct nfs_inode *nfsi)
@@ -573,11 +523,17 @@ static int
nfs_scan_commit(struct inode *inode, struct list_head *dst, pgoff_t idx_start, unsigned int npages)
{
struct nfs_inode *nfsi = NFS_I(inode);
+ int ret;
if (!nfs_need_commit(nfsi))
return 0;
- return nfs_scan_list(nfsi, dst, idx_start, npages, NFS_PAGE_TAG_COMMIT);
+ ret = nfs_scan_list(nfsi, dst, idx_start, npages, NFS_PAGE_TAG_COMMIT);
+ if (ret > 0)
+ nfsi->ncommit -= ret;
+ if (nfs_need_commit(NFS_I(inode)))
+ __mark_inode_dirty(inode, I_DIRTY_DATASYNC);
+ return ret;
}
#else
static inline int nfs_need_commit(struct nfs_inode *nfsi)
@@ -642,9 +598,10 @@ static struct nfs_page *nfs_try_to_update_request(struct inode *inode,
spin_lock(&inode->i_lock);
}
- if (nfs_clear_request_commit(req))
- radix_tree_tag_clear(&NFS_I(inode)->nfs_page_tree,
- req->wb_index, NFS_PAGE_TAG_COMMIT);
+ if (nfs_clear_request_commit(req) &&
+ radix_tree_tag_clear(&NFS_I(inode)->nfs_page_tree,
+ req->wb_index, NFS_PAGE_TAG_COMMIT) != NULL)
+ NFS_I(inode)->ncommit--;
/* Okay, the request matches. Update the region */
if (offset < req->wb_offset) {
@@ -1391,7 +1348,7 @@ static const struct rpc_call_ops nfs_commit_ops = {
.rpc_release = nfs_commit_release,
};
-int nfs_commit_inode(struct inode *inode, int how)
+static int nfs_commit_inode(struct inode *inode, int how)
{
LIST_HEAD(head);
int res;
@@ -1406,92 +1363,51 @@ int nfs_commit_inode(struct inode *inode, int how)
}
return res;
}
-#else
-static inline int nfs_commit_list(struct inode *inode, struct list_head *head, int how)
-{
- return 0;
-}
-#endif
-long nfs_sync_mapping_wait(struct address_space *mapping, struct writeback_control *wbc, int how)
+static int nfs_commit_unstable_pages(struct inode *inode, struct writeback_control *wbc)
{
- struct inode *inode = mapping->host;
- pgoff_t idx_start, idx_end;
- unsigned int npages = 0;
- LIST_HEAD(head);
- int nocommit = how & FLUSH_NOCOMMIT;
- long pages, ret;
-
- /* FIXME */
- if (wbc->range_cyclic)
- idx_start = 0;
- else {
- idx_start = wbc->range_start >> PAGE_CACHE_SHIFT;
- idx_end = wbc->range_end >> PAGE_CACHE_SHIFT;
- if (idx_end > idx_start) {
- pgoff_t l_npages = 1 + idx_end - idx_start;
- npages = l_npages;
- if (sizeof(npages) != sizeof(l_npages) &&
- (pgoff_t)npages != l_npages)
- npages = 0;
+ struct nfs_inode *nfsi = NFS_I(inode);
+ int flags = FLUSH_SYNC;
+ int ret = 0;
+
+ /* Don't commit yet if this is a non-blocking flush and there are
+ * lots of outstanding writes for this mapping.
+ */
+ if (wbc->sync_mode == WB_SYNC_NONE &&
+ nfsi->ncommit <= (nfsi->npages >> 1))
+ goto out_mark_dirty;
+
+ if (wbc->nonblocking || wbc->for_background)
+ flags = 0;
+ ret = nfs_commit_inode(inode, flags);
+ if (ret >= 0) {
+ if (wbc->sync_mode == WB_SYNC_NONE) {
+ if (ret < wbc->nr_to_write)
+ wbc->nr_to_write -= ret;
+ else
+ wbc->nr_to_write = 0;
}
+ return 0;
}
- how &= ~FLUSH_NOCOMMIT;
- spin_lock(&inode->i_lock);
- do {
- ret = nfs_wait_on_requests_locked(inode, idx_start, npages);
- if (ret != 0)
- continue;
- if (nocommit)
- break;
- pages = nfs_scan_commit(inode, &head, idx_start, npages);
- if (pages == 0)
- break;
- if (how & FLUSH_INVALIDATE) {
- spin_unlock(&inode->i_lock);
- nfs_cancel_commit_list(&head);
- ret = pages;
- spin_lock(&inode->i_lock);
- continue;
- }
- pages += nfs_scan_commit(inode, &head, 0, 0);
- spin_unlock(&inode->i_lock);
- ret = nfs_commit_list(inode, &head, how);
- spin_lock(&inode->i_lock);
-
- } while (ret >= 0);
- spin_unlock(&inode->i_lock);
+out_mark_dirty:
+ __mark_inode_dirty(inode, I_DIRTY_DATASYNC);
return ret;
}
-
-static int __nfs_write_mapping(struct address_space *mapping, struct writeback_control *wbc, int how)
+#else
+static int nfs_commit_inode(struct inode *inode, int how)
{
- int ret;
-
- ret = nfs_writepages(mapping, wbc);
- if (ret < 0)
- goto out;
- ret = nfs_sync_mapping_wait(mapping, wbc, how);
- if (ret < 0)
- goto out;
return 0;
-out:
- __mark_inode_dirty(mapping->host, I_DIRTY_PAGES);
- return ret;
}
-/* Two pass sync: first using WB_SYNC_NONE, then WB_SYNC_ALL */
-static int nfs_write_mapping(struct address_space *mapping, int how)
+static int nfs_commit_unstable_pages(struct inode *inode, struct writeback_control *wbc)
{
- struct writeback_control wbc = {
- .bdi = mapping->backing_dev_info,
- .sync_mode = WB_SYNC_ALL,
- .nr_to_write = LONG_MAX,
- .range_start = 0,
- .range_end = LLONG_MAX,
- };
+ return 0;
+}
+#endif
- return __nfs_write_mapping(mapping, &wbc, how);
+int nfs_write_inode(struct inode *inode, struct writeback_control *wbc)
+{
+ return nfs_commit_unstable_pages(inode, wbc);
}
/*
@@ -1499,37 +1415,26 @@ static int nfs_write_mapping(struct address_space *mapping, int how)
*/
int nfs_wb_all(struct inode *inode)
{
- return nfs_write_mapping(inode->i_mapping, 0);
-}
+ struct writeback_control wbc = {
+ .sync_mode = WB_SYNC_ALL,
+ .nr_to_write = LONG_MAX,
+ .range_start = 0,
+ .range_end = LLONG_MAX,
+ };
-int nfs_wb_nocommit(struct inode *inode)
-{
- return nfs_write_mapping(inode->i_mapping, FLUSH_NOCOMMIT);
+ return sync_inode(inode, &wbc);
}
int nfs_wb_page_cancel(struct inode *inode, struct page *page)
{
struct nfs_page *req;
- loff_t range_start = page_offset(page);
- loff_t range_end = range_start + (loff_t)(PAGE_CACHE_SIZE - 1);
- struct writeback_control wbc = {
- .bdi = page->mapping->backing_dev_info,
- .sync_mode = WB_SYNC_ALL,
- .nr_to_write = LONG_MAX,
- .range_start = range_start,
- .range_end = range_end,
- };
int ret = 0;
BUG_ON(!PageLocked(page));
for (;;) {
req = nfs_page_find_request(page);
if (req == NULL)
- goto out;
- if (test_bit(PG_CLEAN, &req->wb_flags)) {
- nfs_release_request(req);
break;
- }
if (nfs_lock_request_dontget(req)) {
nfs_inode_remove_request(req);
/*
@@ -1543,54 +1448,54 @@ int nfs_wb_page_cancel(struct inode *inode, struct page *page)
ret = nfs_wait_on_request(req);
nfs_release_request(req);
if (ret < 0)
- goto out;
+ break;
}
- if (!PagePrivate(page))
- return 0;
- ret = nfs_sync_mapping_wait(page->mapping, &wbc, FLUSH_INVALIDATE);
-out:
return ret;
}
-static int nfs_wb_page_priority(struct inode *inode, struct page *page,
- int how)
+/*
+ * Write back all requests on one page - we do this before reading it.
+ */
+int nfs_wb_page(struct inode *inode, struct page *page)
{
loff_t range_start = page_offset(page);
loff_t range_end = range_start + (loff_t)(PAGE_CACHE_SIZE - 1);
struct writeback_control wbc = {
- .bdi = page->mapping->backing_dev_info,
.sync_mode = WB_SYNC_ALL,
- .nr_to_write = LONG_MAX,
+ .nr_to_write = 0,
.range_start = range_start,
.range_end = range_end,
};
+ struct nfs_page *req;
+ int need_commit;
int ret;
- do {
+ while(PagePrivate(page)) {
if (clear_page_dirty_for_io(page)) {
ret = nfs_writepage_locked(page, &wbc);
if (ret < 0)
goto out_error;
- } else if (!PagePrivate(page))
+ }
+ req = nfs_find_and_lock_request(page);
+ if (!req)
break;
- ret = nfs_sync_mapping_wait(page->mapping, &wbc, how);
- if (ret < 0)
+ if (IS_ERR(req)) {
+ ret = PTR_ERR(req);
goto out_error;
- } while (PagePrivate(page));
+ }
+ need_commit = test_bit(PG_CLEAN, &req->wb_flags);
+ nfs_clear_page_tag_locked(req);
+ if (need_commit) {
+ ret = nfs_commit_inode(inode, FLUSH_SYNC);
+ if (ret < 0)
+ goto out_error;
+ }
+ }
return 0;
out_error:
- __mark_inode_dirty(inode, I_DIRTY_PAGES);
return ret;
}
-/*
- * Write back all requests on one page - we do this before reading it.
- */
-int nfs_wb_page(struct inode *inode, struct page* page)
-{
- return nfs_wb_page_priority(inode, page, FLUSH_STABLE);
-}
-
#ifdef CONFIG_MIGRATION
int nfs_migrate_page(struct address_space *mapping, struct page *newpage,
struct page *page)
@@ -1598,8 +1503,7 @@ int nfs_migrate_page(struct address_space *mapping, struct page *newpage,
struct nfs_page *req;
int ret;
- if (PageFsCache(page))
- nfs_fscache_release_page(page, GFP_KERNEL);
+ nfs_fscache_release_page(page, GFP_KERNEL);
req = nfs_find_and_lock_request(page);
ret = PTR_ERR(req);
diff --git a/fs/nfsctl.c b/fs/nfsctl.c
index d3854d94b7cf..bf9cbd242ddd 100644
--- a/fs/nfsctl.c
+++ b/fs/nfsctl.c
@@ -36,10 +36,9 @@ static struct file *do_open(char *name, int flags)
return ERR_PTR(error);
if (flags == O_RDWR)
- error = may_open(&nd.path, MAY_READ|MAY_WRITE,
- FMODE_READ|FMODE_WRITE);
+ error = may_open(&nd.path, MAY_READ|MAY_WRITE, flags);
else
- error = may_open(&nd.path, MAY_WRITE, FMODE_WRITE);
+ error = may_open(&nd.path, MAY_WRITE, flags);
if (!error)
return dentry_open(nd.path.dentry, nd.path.mnt, flags,
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index a8587e90fd5a..bbf72d8f9fc0 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -2121,9 +2121,15 @@ out_acl:
* and this is the root of a cross-mounted filesystem.
*/
if (ignore_crossmnt == 0 &&
- exp->ex_path.mnt->mnt_root->d_inode == dentry->d_inode) {
- err = vfs_getattr(exp->ex_path.mnt->mnt_parent,
- exp->ex_path.mnt->mnt_mountpoint, &stat);
+ dentry == exp->ex_path.mnt->mnt_root) {
+ struct path path = exp->ex_path;
+ path_get(&path);
+ while (follow_up(&path)) {
+ if (path.dentry != path.mnt->mnt_root)
+ break;
+ }
+ err = vfs_getattr(path.mnt, path.dentry, &stat);
+ path_put(&path);
if (err)
goto out_nfserr;
}
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 97d79eff6b7f..15dc2deaac5f 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -361,7 +361,7 @@ nfsd_setattr(struct svc_rqst *rqstp, struct svc_fh *fhp, struct iattr *iap,
* If we are changing the size of the file, then
* we need to break all leases.
*/
- host_err = break_lease(inode, FMODE_WRITE | O_NONBLOCK);
+ host_err = break_lease(inode, O_WRONLY | O_NONBLOCK);
if (host_err == -EWOULDBLOCK)
host_err = -ETIMEDOUT;
if (host_err) /* ENOMEM or EWOULDBLOCK */
@@ -734,7 +734,7 @@ nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, int type,
* Check to see if there are any leases on this file.
* This may block while leases are broken.
*/
- host_err = break_lease(inode, O_NONBLOCK | ((access & NFSD_MAY_WRITE) ? FMODE_WRITE : 0));
+ host_err = break_lease(inode, O_NONBLOCK | ((access & NFSD_MAY_WRITE) ? O_WRONLY : 0));
if (host_err == -EWOULDBLOCK)
host_err = -ETIMEDOUT;
if (host_err) /* NOMEM or WOULDBLOCK */
@@ -752,7 +752,8 @@ nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, int type,
flags, current_cred());
if (IS_ERR(*filp))
host_err = PTR_ERR(*filp);
- host_err = ima_file_check(*filp, access);
+ else
+ host_err = ima_file_check(*filp, access);
out_nfserr:
err = nfserrno(host_err);
out:
diff --git a/fs/nilfs2/dat.c b/fs/nilfs2/dat.c
index 187dd07ba86c..9d1e5de91afb 100644
--- a/fs/nilfs2/dat.c
+++ b/fs/nilfs2/dat.c
@@ -388,8 +388,7 @@ int nilfs_dat_translate(struct inode *dat, __u64 vblocknr, sector_t *blocknrp)
ret = -ENOENT;
goto out;
}
- if (blocknrp != NULL)
- *blocknrp = blocknr;
+ *blocknrp = blocknr;
out:
kunmap_atomic(kaddr, KM_USER0);
diff --git a/fs/nilfs2/dir.c b/fs/nilfs2/dir.c
index 76d803e060a9..0092840492ee 100644
--- a/fs/nilfs2/dir.c
+++ b/fs/nilfs2/dir.c
@@ -224,7 +224,7 @@ fail:
* len <= NILFS_NAME_LEN and de != NULL are guaranteed by caller.
*/
static int
-nilfs_match(int len, const char * const name, struct nilfs_dir_entry *de)
+nilfs_match(int len, const unsigned char *name, struct nilfs_dir_entry *de)
{
if (len != de->name_len)
return 0;
@@ -349,11 +349,11 @@ done:
* Entry is guaranteed to be valid.
*/
struct nilfs_dir_entry *
-nilfs_find_entry(struct inode *dir, struct dentry *dentry,
+nilfs_find_entry(struct inode *dir, const struct qstr *qstr,
struct page **res_page)
{
- const char *name = dentry->d_name.name;
- int namelen = dentry->d_name.len;
+ const unsigned char *name = qstr->name;
+ int namelen = qstr->len;
unsigned reclen = NILFS_DIR_REC_LEN(namelen);
unsigned long start, n;
unsigned long npages = dir_pages(dir);
@@ -424,13 +424,13 @@ struct nilfs_dir_entry *nilfs_dotdot(struct inode *dir, struct page **p)
return de;
}
-ino_t nilfs_inode_by_name(struct inode *dir, struct dentry *dentry)
+ino_t nilfs_inode_by_name(struct inode *dir, const struct qstr *qstr)
{
ino_t res = 0;
struct nilfs_dir_entry *de;
struct page *page;
- de = nilfs_find_entry(dir, dentry, &page);
+ de = nilfs_find_entry(dir, qstr, &page);
if (de) {
res = le64_to_cpu(de->inode);
kunmap(page);
@@ -465,7 +465,7 @@ void nilfs_set_link(struct inode *dir, struct nilfs_dir_entry *de,
int nilfs_add_link(struct dentry *dentry, struct inode *inode)
{
struct inode *dir = dentry->d_parent->d_inode;
- const char *name = dentry->d_name.name;
+ const unsigned char *name = dentry->d_name.name;
int namelen = dentry->d_name.len;
unsigned chunk_size = nilfs_chunk_size(dir);
unsigned reclen = NILFS_DIR_REC_LEN(namelen);
diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c
index d6b2b83de363..313d0a21da48 100644
--- a/fs/nilfs2/ioctl.c
+++ b/fs/nilfs2/ioctl.c
@@ -26,6 +26,7 @@
#include <linux/capability.h> /* capable() */
#include <linux/uaccess.h> /* copy_from_user(), copy_to_user() */
#include <linux/vmalloc.h>
+#include <linux/mount.h> /* mnt_want_write(), mnt_drop_write() */
#include <linux/nilfs2_fs.h>
#include "nilfs.h"
#include "segment.h"
@@ -107,20 +108,28 @@ static int nilfs_ioctl_change_cpmode(struct inode *inode, struct file *filp,
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
+
+ ret = mnt_want_write(filp->f_path.mnt);
+ if (ret)
+ return ret;
+
+ ret = -EFAULT;
if (copy_from_user(&cpmode, argp, sizeof(cpmode)))
- return -EFAULT;
+ goto out;
mutex_lock(&nilfs->ns_mount_mutex);
+
nilfs_transaction_begin(inode->i_sb, &ti, 0);
ret = nilfs_cpfile_change_cpmode(
cpfile, cpmode.cm_cno, cpmode.cm_mode);
- if (unlikely(ret < 0)) {
+ if (unlikely(ret < 0))
nilfs_transaction_abort(inode->i_sb);
- mutex_unlock(&nilfs->ns_mount_mutex);
- return ret;
- }
- nilfs_transaction_commit(inode->i_sb); /* never fails */
+ else
+ nilfs_transaction_commit(inode->i_sb); /* never fails */
+
mutex_unlock(&nilfs->ns_mount_mutex);
+out:
+ mnt_drop_write(filp->f_path.mnt);
return ret;
}
@@ -135,16 +144,23 @@ nilfs_ioctl_delete_checkpoint(struct inode *inode, struct file *filp,
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
+
+ ret = mnt_want_write(filp->f_path.mnt);
+ if (ret)
+ return ret;
+
+ ret = -EFAULT;
if (copy_from_user(&cno, argp, sizeof(cno)))
- return -EFAULT;
+ goto out;
nilfs_transaction_begin(inode->i_sb, &ti, 0);
ret = nilfs_cpfile_delete_checkpoint(cpfile, cno);
- if (unlikely(ret < 0)) {
+ if (unlikely(ret < 0))
nilfs_transaction_abort(inode->i_sb);
- return ret;
- }
- nilfs_transaction_commit(inode->i_sb); /* never fails */
+ else
+ nilfs_transaction_commit(inode->i_sb); /* never fails */
+out:
+ mnt_drop_write(filp->f_path.mnt);
return ret;
}
@@ -496,12 +512,19 @@ static int nilfs_ioctl_clean_segments(struct inode *inode, struct file *filp,
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
+ ret = mnt_want_write(filp->f_path.mnt);
+ if (ret)
+ return ret;
+
+ ret = -EFAULT;
if (copy_from_user(argv, argp, sizeof(argv)))
- return -EFAULT;
+ goto out;
+ ret = -EINVAL;
nsegs = argv[4].v_nmembs;
if (argv[4].v_size != argsz[4])
- return -EINVAL;
+ goto out;
+
/*
* argv[4] points to segment numbers this ioctl cleans. We
* use kmalloc() for its buffer because memory used for the
@@ -509,9 +532,10 @@ static int nilfs_ioctl_clean_segments(struct inode *inode, struct file *filp,
*/
kbufs[4] = memdup_user((void __user *)(unsigned long)argv[4].v_base,
nsegs * sizeof(__u64));
- if (IS_ERR(kbufs[4]))
- return PTR_ERR(kbufs[4]);
-
+ if (IS_ERR(kbufs[4])) {
+ ret = PTR_ERR(kbufs[4]);
+ goto out;
+ }
nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
for (n = 0; n < 4; n++) {
@@ -563,10 +587,12 @@ static int nilfs_ioctl_clean_segments(struct inode *inode, struct file *filp,
nilfs_remove_all_gcinode(nilfs);
clear_nilfs_gc_running(nilfs);
- out_free:
+out_free:
while (--n >= 0)
vfree(kbufs[n]);
kfree(kbufs[4]);
+out:
+ mnt_drop_write(filp->f_path.mnt);
return ret;
}
@@ -575,13 +601,17 @@ static int nilfs_ioctl_sync(struct inode *inode, struct file *filp,
{
__u64 cno;
int ret;
+ struct the_nilfs *nilfs;
ret = nilfs_construct_segment(inode->i_sb);
if (ret < 0)
return ret;
if (argp != NULL) {
- cno = NILFS_SB(inode->i_sb)->s_nilfs->ns_cno - 1;
+ nilfs = NILFS_SB(inode->i_sb)->s_nilfs;
+ down_read(&nilfs->ns_segctor_sem);
+ cno = nilfs->ns_cno - 1;
+ up_read(&nilfs->ns_segctor_sem);
if (copy_to_user(argp, &cno, sizeof(cno)))
return -EFAULT;
}
diff --git a/fs/nilfs2/namei.c b/fs/nilfs2/namei.c
index 07ba838ef089..ad6ed2cf19b4 100644
--- a/fs/nilfs2/namei.c
+++ b/fs/nilfs2/namei.c
@@ -67,7 +67,7 @@ nilfs_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
if (dentry->d_name.len > NILFS_NAME_LEN)
return ERR_PTR(-ENAMETOOLONG);
- ino = nilfs_inode_by_name(dir, dentry);
+ ino = nilfs_inode_by_name(dir, &dentry->d_name);
inode = NULL;
if (ino) {
inode = nilfs_iget(dir->i_sb, ino);
@@ -81,10 +81,7 @@ struct dentry *nilfs_get_parent(struct dentry *child)
{
unsigned long ino;
struct inode *inode;
- struct dentry dotdot;
-
- dotdot.d_name.name = "..";
- dotdot.d_name.len = 2;
+ struct qstr dotdot = {.name = "..", .len = 2};
ino = nilfs_inode_by_name(child->d_inode, &dotdot);
if (!ino)
@@ -296,7 +293,7 @@ static int nilfs_do_unlink(struct inode *dir, struct dentry *dentry)
int err;
err = -ENOENT;
- de = nilfs_find_entry(dir, dentry, &page);
+ de = nilfs_find_entry(dir, &dentry->d_name, &page);
if (!de)
goto out;
@@ -389,7 +386,7 @@ static int nilfs_rename(struct inode *old_dir, struct dentry *old_dentry,
return err;
err = -ENOENT;
- old_de = nilfs_find_entry(old_dir, old_dentry, &old_page);
+ old_de = nilfs_find_entry(old_dir, &old_dentry->d_name, &old_page);
if (!old_de)
goto out;
@@ -409,7 +406,7 @@ static int nilfs_rename(struct inode *old_dir, struct dentry *old_dentry,
goto out_dir;
err = -ENOENT;
- new_de = nilfs_find_entry(new_dir, new_dentry, &new_page);
+ new_de = nilfs_find_entry(new_dir, &new_dentry->d_name, &new_page);
if (!new_de)
goto out_dir;
inc_nlink(old_inode);
diff --git a/fs/nilfs2/nilfs.h b/fs/nilfs2/nilfs.h
index 4da6f67e9a91..8723e5bfd071 100644
--- a/fs/nilfs2/nilfs.h
+++ b/fs/nilfs2/nilfs.h
@@ -217,10 +217,10 @@ static inline int nilfs_init_acl(struct inode *inode, struct inode *dir)
/* dir.c */
extern int nilfs_add_link(struct dentry *, struct inode *);
-extern ino_t nilfs_inode_by_name(struct inode *, struct dentry *);
+extern ino_t nilfs_inode_by_name(struct inode *, const struct qstr *);
extern int nilfs_make_empty(struct inode *, struct inode *);
extern struct nilfs_dir_entry *
-nilfs_find_entry(struct inode *, struct dentry *, struct page **);
+nilfs_find_entry(struct inode *, const struct qstr *, struct page **);
extern int nilfs_delete_entry(struct nilfs_dir_entry *, struct page *);
extern int nilfs_empty_dir(struct inode *);
extern struct nilfs_dir_entry *nilfs_dotdot(struct inode *, struct page **);
diff --git a/fs/nilfs2/recovery.c b/fs/nilfs2/recovery.c
index c9c96c7825dc..017bedc761a0 100644
--- a/fs/nilfs2/recovery.c
+++ b/fs/nilfs2/recovery.c
@@ -39,7 +39,6 @@ enum {
NILFS_SEG_FAIL_IO,
NILFS_SEG_FAIL_MAGIC,
NILFS_SEG_FAIL_SEQ,
- NILFS_SEG_FAIL_CHECKSUM_SEGSUM,
NILFS_SEG_FAIL_CHECKSUM_SUPER_ROOT,
NILFS_SEG_FAIL_CHECKSUM_FULL,
NILFS_SEG_FAIL_CONSISTENCY,
@@ -71,10 +70,6 @@ static int nilfs_warn_segment_error(int err)
printk(KERN_WARNING
"NILFS warning: Sequence number mismatch\n");
break;
- case NILFS_SEG_FAIL_CHECKSUM_SEGSUM:
- printk(KERN_WARNING
- "NILFS warning: Checksum error in segment summary\n");
- break;
case NILFS_SEG_FAIL_CHECKSUM_SUPER_ROOT:
printk(KERN_WARNING
"NILFS warning: Checksum error in super root\n");
@@ -206,19 +201,15 @@ int nilfs_read_super_root_block(struct super_block *sb, sector_t sr_block,
* @pseg_start: start disk block number of partial segment
* @seg_seq: sequence number requested
* @ssi: pointer to nilfs_segsum_info struct to store information
- * @full_check: full check flag
- * (0: only checks segment summary CRC, 1: data CRC)
*/
static int
load_segment_summary(struct nilfs_sb_info *sbi, sector_t pseg_start,
- u64 seg_seq, struct nilfs_segsum_info *ssi,
- int full_check)
+ u64 seg_seq, struct nilfs_segsum_info *ssi)
{
struct buffer_head *bh_sum;
struct nilfs_segment_summary *sum;
- unsigned long offset, nblock;
- u64 check_bytes;
- u32 crc, crc_sum;
+ unsigned long nblock;
+ u32 crc;
int ret = NILFS_SEG_FAIL_IO;
bh_sum = sb_bread(sbi->s_super, pseg_start);
@@ -237,34 +228,24 @@ load_segment_summary(struct nilfs_sb_info *sbi, sector_t pseg_start,
ret = NILFS_SEG_FAIL_SEQ;
goto failed;
}
- if (full_check) {
- offset = sizeof(sum->ss_datasum);
- check_bytes =
- ((u64)ssi->nblocks << sbi->s_super->s_blocksize_bits);
- nblock = ssi->nblocks;
- crc_sum = le32_to_cpu(sum->ss_datasum);
- ret = NILFS_SEG_FAIL_CHECKSUM_FULL;
- } else { /* only checks segment summary */
- offset = sizeof(sum->ss_datasum) + sizeof(sum->ss_sumsum);
- check_bytes = ssi->sumbytes;
- nblock = ssi->nsumblk;
- crc_sum = le32_to_cpu(sum->ss_sumsum);
- ret = NILFS_SEG_FAIL_CHECKSUM_SEGSUM;
- }
+ nblock = ssi->nblocks;
if (unlikely(nblock == 0 ||
nblock > sbi->s_nilfs->ns_blocks_per_segment)) {
/* This limits the number of blocks read in the CRC check */
ret = NILFS_SEG_FAIL_CONSISTENCY;
goto failed;
}
- if (calc_crc_cont(sbi, bh_sum, &crc, offset, check_bytes,
+ if (calc_crc_cont(sbi, bh_sum, &crc, sizeof(sum->ss_datasum),
+ ((u64)nblock << sbi->s_super->s_blocksize_bits),
pseg_start, nblock)) {
ret = NILFS_SEG_FAIL_IO;
goto failed;
}
- if (crc == crc_sum)
+ if (crc == le32_to_cpu(sum->ss_datasum))
ret = 0;
+ else
+ ret = NILFS_SEG_FAIL_CHECKSUM_FULL;
failed:
brelse(bh_sum);
out:
@@ -598,7 +579,7 @@ static int nilfs_do_roll_forward(struct the_nilfs *nilfs,
while (segnum != ri->ri_segnum || pseg_start <= ri->ri_pseg_start) {
- ret = load_segment_summary(sbi, pseg_start, seg_seq, &ssi, 1);
+ ret = load_segment_summary(sbi, pseg_start, seg_seq, &ssi);
if (ret) {
if (ret == NILFS_SEG_FAIL_IO) {
err = -EIO;
@@ -821,7 +802,7 @@ int nilfs_search_super_root(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi,
for (;;) {
/* Load segment summary */
- ret = load_segment_summary(sbi, pseg_start, seg_seq, &ssi, 1);
+ ret = load_segment_summary(sbi, pseg_start, seg_seq, &ssi);
if (ret) {
if (ret == NILFS_SEG_FAIL_IO)
goto failed;
diff --git a/fs/nilfs2/segbuf.c b/fs/nilfs2/segbuf.c
index 645c78656aa0..ab56fe44e377 100644
--- a/fs/nilfs2/segbuf.c
+++ b/fs/nilfs2/segbuf.c
@@ -40,6 +40,11 @@ struct nilfs_write_info {
};
+static int nilfs_segbuf_write(struct nilfs_segment_buffer *segbuf,
+ struct the_nilfs *nilfs);
+static int nilfs_segbuf_wait(struct nilfs_segment_buffer *segbuf);
+
+
static struct kmem_cache *nilfs_segbuf_cachep;
static void nilfs_segbuf_init_once(void *obj)
@@ -302,6 +307,19 @@ void nilfs_truncate_logs(struct list_head *logs,
}
}
+int nilfs_write_logs(struct list_head *logs, struct the_nilfs *nilfs)
+{
+ struct nilfs_segment_buffer *segbuf;
+ int ret = 0;
+
+ list_for_each_entry(segbuf, logs, sb_list) {
+ ret = nilfs_segbuf_write(segbuf, nilfs);
+ if (ret)
+ break;
+ }
+ return ret;
+}
+
int nilfs_wait_on_logs(struct list_head *logs)
{
struct nilfs_segment_buffer *segbuf;
diff --git a/fs/nilfs2/segbuf.h b/fs/nilfs2/segbuf.h
index 6af1630fb401..94dfd3517bc0 100644
--- a/fs/nilfs2/segbuf.h
+++ b/fs/nilfs2/segbuf.h
@@ -166,13 +166,10 @@ nilfs_segbuf_add_file_buffer(struct nilfs_segment_buffer *segbuf,
segbuf->sb_sum.nfileblk++;
}
-int nilfs_segbuf_write(struct nilfs_segment_buffer *segbuf,
- struct the_nilfs *nilfs);
-int nilfs_segbuf_wait(struct nilfs_segment_buffer *segbuf);
-
void nilfs_clear_logs(struct list_head *logs);
void nilfs_truncate_logs(struct list_head *logs,
struct nilfs_segment_buffer *last);
+int nilfs_write_logs(struct list_head *logs, struct the_nilfs *nilfs);
int nilfs_wait_on_logs(struct list_head *logs);
static inline void nilfs_destroy_logs(struct list_head *logs)
diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c
index 105b508b47a8..ada2f1b947a3 100644
--- a/fs/nilfs2/segment.c
+++ b/fs/nilfs2/segment.c
@@ -1764,14 +1764,9 @@ static int nilfs_segctor_prepare_write(struct nilfs_sc_info *sci,
static int nilfs_segctor_write(struct nilfs_sc_info *sci,
struct the_nilfs *nilfs)
{
- struct nilfs_segment_buffer *segbuf;
- int ret = 0;
+ int ret;
- list_for_each_entry(segbuf, &sci->sc_segbufs, sb_list) {
- ret = nilfs_segbuf_write(segbuf, nilfs);
- if (ret)
- break;
- }
+ ret = nilfs_write_logs(&sci->sc_segbufs, nilfs);
list_splice_tail_init(&sci->sc_segbufs, &sci->sc_write_logs);
return ret;
}
@@ -1937,8 +1932,7 @@ static void nilfs_segctor_complete_write(struct nilfs_sc_info *sci)
{
struct nilfs_segment_buffer *segbuf;
struct page *bd_page = NULL, *fs_page = NULL;
- struct nilfs_sb_info *sbi = sci->sc_sbi;
- struct the_nilfs *nilfs = sbi->s_nilfs;
+ struct the_nilfs *nilfs = sci->sc_sbi->s_nilfs;
int update_sr = (sci->sc_super_root != NULL);
list_for_each_entry(segbuf, &sci->sc_write_logs, sb_list) {
@@ -2020,7 +2014,7 @@ static void nilfs_segctor_complete_write(struct nilfs_sc_info *sci)
if (update_sr) {
nilfs_set_last_segment(nilfs, segbuf->sb_pseg_start,
segbuf->sb_sum.seg_seq, nilfs->ns_cno++);
- sbi->s_super->s_dirt = 1;
+ set_nilfs_sb_dirty(nilfs);
clear_bit(NILFS_SC_HAVE_DELTA, &sci->sc_flags);
clear_bit(NILFS_SC_DIRTY, &sci->sc_flags);
@@ -2425,43 +2419,43 @@ int nilfs_construct_dsync_segment(struct super_block *sb, struct inode *inode,
return err;
}
-struct nilfs_segctor_req {
- int mode;
- __u32 seq_accepted;
- int sc_err; /* construction failure */
- int sb_err; /* super block writeback failure */
-};
-
#define FLUSH_FILE_BIT (0x1) /* data file only */
#define FLUSH_DAT_BIT (1 << NILFS_DAT_INO) /* DAT only */
-static void nilfs_segctor_accept(struct nilfs_sc_info *sci,
- struct nilfs_segctor_req *req)
+/**
+ * nilfs_segctor_accept - record accepted sequence count of log-write requests
+ * @sci: segment constructor object
+ */
+static void nilfs_segctor_accept(struct nilfs_sc_info *sci)
{
- req->sc_err = req->sb_err = 0;
spin_lock(&sci->sc_state_lock);
- req->seq_accepted = sci->sc_seq_request;
+ sci->sc_seq_accepted = sci->sc_seq_request;
spin_unlock(&sci->sc_state_lock);
if (sci->sc_timer)
del_timer_sync(sci->sc_timer);
}
-static void nilfs_segctor_notify(struct nilfs_sc_info *sci,
- struct nilfs_segctor_req *req)
+/**
+ * nilfs_segctor_notify - notify the result of request to caller threads
+ * @sci: segment constructor object
+ * @mode: mode of log forming
+ * @err: error code to be notified
+ */
+static void nilfs_segctor_notify(struct nilfs_sc_info *sci, int mode, int err)
{
/* Clear requests (even when the construction failed) */
spin_lock(&sci->sc_state_lock);
- if (req->mode == SC_LSEG_SR) {
+ if (mode == SC_LSEG_SR) {
sci->sc_state &= ~NILFS_SEGCTOR_COMMIT;
- sci->sc_seq_done = req->seq_accepted;
- nilfs_segctor_wakeup(sci, req->sc_err ? : req->sb_err);
+ sci->sc_seq_done = sci->sc_seq_accepted;
+ nilfs_segctor_wakeup(sci, err);
sci->sc_flush_request = 0;
} else {
- if (req->mode == SC_FLUSH_FILE)
+ if (mode == SC_FLUSH_FILE)
sci->sc_flush_request &= ~FLUSH_FILE_BIT;
- else if (req->mode == SC_FLUSH_DAT)
+ else if (mode == SC_FLUSH_DAT)
sci->sc_flush_request &= ~FLUSH_DAT_BIT;
/* re-enable timer if checkpoint creation was not done */
@@ -2472,30 +2466,37 @@ static void nilfs_segctor_notify(struct nilfs_sc_info *sci,
spin_unlock(&sci->sc_state_lock);
}
-static int nilfs_segctor_construct(struct nilfs_sc_info *sci,
- struct nilfs_segctor_req *req)
+/**
+ * nilfs_segctor_construct - form logs and write them to disk
+ * @sci: segment constructor object
+ * @mode: mode of log forming
+ */
+static int nilfs_segctor_construct(struct nilfs_sc_info *sci, int mode)
{
struct nilfs_sb_info *sbi = sci->sc_sbi;
struct the_nilfs *nilfs = sbi->s_nilfs;
int err = 0;
+ nilfs_segctor_accept(sci);
+
if (nilfs_discontinued(nilfs))
- req->mode = SC_LSEG_SR;
- if (!nilfs_segctor_confirm(sci)) {
- err = nilfs_segctor_do_construct(sci, req->mode);
- req->sc_err = err;
- }
+ mode = SC_LSEG_SR;
+ if (!nilfs_segctor_confirm(sci))
+ err = nilfs_segctor_do_construct(sci, mode);
+
if (likely(!err)) {
- if (req->mode != SC_FLUSH_DAT)
+ if (mode != SC_FLUSH_DAT)
atomic_set(&nilfs->ns_ndirtyblks, 0);
if (test_bit(NILFS_SC_SUPER_ROOT, &sci->sc_flags) &&
nilfs_discontinued(nilfs)) {
down_write(&nilfs->ns_sem);
- req->sb_err = nilfs_commit_super(sbi,
- nilfs_altsb_need_update(nilfs));
+ err = nilfs_commit_super(
+ sbi, nilfs_altsb_need_update(nilfs));
up_write(&nilfs->ns_sem);
}
}
+
+ nilfs_segctor_notify(sci, mode, err);
return err;
}
@@ -2526,7 +2527,6 @@ int nilfs_clean_segments(struct super_block *sb, struct nilfs_argv *argv,
struct nilfs_sc_info *sci = NILFS_SC(sbi);
struct the_nilfs *nilfs = sbi->s_nilfs;
struct nilfs_transaction_info ti;
- struct nilfs_segctor_req req = { .mode = SC_LSEG_SR };
int err;
if (unlikely(!sci))
@@ -2547,10 +2547,8 @@ int nilfs_clean_segments(struct super_block *sb, struct nilfs_argv *argv,
list_splice_tail_init(&nilfs->ns_gc_inodes, &sci->sc_gc_inodes);
for (;;) {
- nilfs_segctor_accept(sci, &req);
- err = nilfs_segctor_construct(sci, &req);
+ err = nilfs_segctor_construct(sci, SC_LSEG_SR);
nilfs_remove_written_gcinodes(nilfs, &sci->sc_gc_inodes);
- nilfs_segctor_notify(sci, &req);
if (likely(!err))
break;
@@ -2560,6 +2558,16 @@ int nilfs_clean_segments(struct super_block *sb, struct nilfs_argv *argv,
set_current_state(TASK_INTERRUPTIBLE);
schedule_timeout(sci->sc_interval);
}
+ if (nilfs_test_opt(sbi, DISCARD)) {
+ int ret = nilfs_discard_segments(nilfs, sci->sc_freesegs,
+ sci->sc_nfreesegs);
+ if (ret) {
+ printk(KERN_WARNING
+ "NILFS warning: error %d on discard request, "
+ "turning discards off for the device\n", ret);
+ nilfs_clear_opt(sbi, DISCARD);
+ }
+ }
out_unlock:
sci->sc_freesegs = NULL;
@@ -2573,13 +2581,9 @@ static void nilfs_segctor_thread_construct(struct nilfs_sc_info *sci, int mode)
{
struct nilfs_sb_info *sbi = sci->sc_sbi;
struct nilfs_transaction_info ti;
- struct nilfs_segctor_req req = { .mode = mode };
nilfs_transaction_lock(sbi, &ti, 0);
-
- nilfs_segctor_accept(sci, &req);
- nilfs_segctor_construct(sci, &req);
- nilfs_segctor_notify(sci, &req);
+ nilfs_segctor_construct(sci, mode);
/*
* Unclosed segment should be retried. We do this using sc_timer.
@@ -2635,6 +2639,7 @@ static int nilfs_segctor_flush_mode(struct nilfs_sc_info *sci)
static int nilfs_segctor_thread(void *arg)
{
struct nilfs_sc_info *sci = (struct nilfs_sc_info *)arg;
+ struct the_nilfs *nilfs = sci->sc_sbi->s_nilfs;
struct timer_list timer;
int timeout = 0;
@@ -2680,7 +2685,6 @@ static int nilfs_segctor_thread(void *arg)
} else {
DEFINE_WAIT(wait);
int should_sleep = 1;
- struct the_nilfs *nilfs;
prepare_to_wait(&sci->sc_wait_daemon, &wait,
TASK_INTERRUPTIBLE);
@@ -2701,8 +2705,8 @@ static int nilfs_segctor_thread(void *arg)
finish_wait(&sci->sc_wait_daemon, &wait);
timeout = ((sci->sc_state & NILFS_SEGCTOR_COMMIT) &&
time_after_eq(jiffies, sci->sc_timer->expires));
- nilfs = sci->sc_sbi->s_nilfs;
- if (sci->sc_super->s_dirt && nilfs_sb_need_update(nilfs))
+
+ if (nilfs_sb_dirty(nilfs) && nilfs_sb_need_update(nilfs))
set_nilfs_discontinued(nilfs);
}
goto loop;
@@ -2797,12 +2801,9 @@ static void nilfs_segctor_write_out(struct nilfs_sc_info *sci)
do {
struct nilfs_sb_info *sbi = sci->sc_sbi;
struct nilfs_transaction_info ti;
- struct nilfs_segctor_req req = { .mode = SC_LSEG_SR };
nilfs_transaction_lock(sbi, &ti, 0);
- nilfs_segctor_accept(sci, &req);
- ret = nilfs_segctor_construct(sci, &req);
- nilfs_segctor_notify(sci, &req);
+ ret = nilfs_segctor_construct(sci, SC_LSEG_SR);
nilfs_transaction_unlock(sbi);
} while (ret && retrycount-- > 0);
@@ -2865,8 +2866,15 @@ int nilfs_attach_segment_constructor(struct nilfs_sb_info *sbi)
struct the_nilfs *nilfs = sbi->s_nilfs;
int err;
- /* Each field of nilfs_segctor is cleared through the initialization
- of super-block info */
+ if (NILFS_SC(sbi)) {
+ /*
+ * This happens if the filesystem was remounted
+ * read/write after nilfs_error degenerated it into a
+ * read-only mount.
+ */
+ nilfs_detach_segment_constructor(sbi);
+ }
+
sbi->s_sc_info = nilfs_segctor_new(sbi);
if (!sbi->s_sc_info)
return -ENOMEM;
diff --git a/fs/nilfs2/segment.h b/fs/nilfs2/segment.h
index 3d3ab2f9864c..3155e0c7f415 100644
--- a/fs/nilfs2/segment.h
+++ b/fs/nilfs2/segment.h
@@ -116,6 +116,7 @@ struct nilfs_segsum_pointer {
* @sc_wait_daemon: Daemon wait queue
* @sc_wait_task: Start/end wait queue to control segctord task
* @sc_seq_request: Request counter
+ * @sc_seq_accept: Accepted request count
* @sc_seq_done: Completion counter
* @sc_sync: Request of explicit sync operation
* @sc_interval: Timeout value of background construction
@@ -169,6 +170,7 @@ struct nilfs_sc_info {
wait_queue_head_t sc_wait_task;
__u32 sc_seq_request;
+ __u32 sc_seq_accepted;
__u32 sc_seq_done;
int sc_sync;
diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c
index 8173faee31e6..92579cc4c935 100644
--- a/fs/nilfs2/super.c
+++ b/fs/nilfs2/super.c
@@ -96,9 +96,6 @@ void nilfs_error(struct super_block *sb, const char *function,
if (!(sb->s_flags & MS_RDONLY)) {
struct the_nilfs *nilfs = sbi->s_nilfs;
- if (!nilfs_test_opt(sbi, ERRORS_CONT))
- nilfs_detach_segment_constructor(sbi);
-
down_write(&nilfs->ns_sem);
if (!(nilfs->ns_mount_state & NILFS_ERROR_FS)) {
nilfs->ns_mount_state |= NILFS_ERROR_FS;
@@ -301,7 +298,7 @@ int nilfs_commit_super(struct nilfs_sb_info *sbi, int dupsb)
memcpy(sbp[1], sbp[0], nilfs->ns_sbsize);
nilfs->ns_sbwtime[1] = t;
}
- sbi->s_super->s_dirt = 0;
+ clear_nilfs_sb_dirty(nilfs);
return nilfs_sync_super(sbi, dupsb);
}
@@ -345,7 +342,7 @@ static int nilfs_sync_fs(struct super_block *sb, int wait)
err = nilfs_construct_segment(sb);
down_write(&nilfs->ns_sem);
- if (sb->s_dirt)
+ if (nilfs_sb_dirty(nilfs))
nilfs_commit_super(sbi, 1);
up_write(&nilfs->ns_sem);
@@ -481,6 +478,8 @@ static int nilfs_show_options(struct seq_file *seq, struct vfsmount *vfs)
seq_printf(seq, ",order=strict");
if (nilfs_test_opt(sbi, NORECOVERY))
seq_printf(seq, ",norecovery");
+ if (nilfs_test_opt(sbi, DISCARD))
+ seq_printf(seq, ",discard");
return 0;
}
@@ -550,7 +549,7 @@ static const struct export_operations nilfs_export_ops = {
enum {
Opt_err_cont, Opt_err_panic, Opt_err_ro,
Opt_nobarrier, Opt_snapshot, Opt_order, Opt_norecovery,
- Opt_err,
+ Opt_discard, Opt_err,
};
static match_table_t tokens = {
@@ -561,6 +560,7 @@ static match_table_t tokens = {
{Opt_snapshot, "cp=%u"},
{Opt_order, "order=%s"},
{Opt_norecovery, "norecovery"},
+ {Opt_discard, "discard"},
{Opt_err, NULL}
};
@@ -614,6 +614,9 @@ static int parse_options(char *options, struct super_block *sb)
case Opt_norecovery:
nilfs_set_opt(sbi, NORECOVERY);
break;
+ case Opt_discard:
+ nilfs_set_opt(sbi, DISCARD);
+ break;
default:
printk(KERN_ERR
"NILFS: Unrecognized mount option \"%s\"\n", p);
diff --git a/fs/nilfs2/the_nilfs.c b/fs/nilfs2/the_nilfs.c
index 6241e1722efc..92733d5651d2 100644
--- a/fs/nilfs2/the_nilfs.c
+++ b/fs/nilfs2/the_nilfs.c
@@ -646,6 +646,44 @@ int init_nilfs(struct the_nilfs *nilfs, struct nilfs_sb_info *sbi, char *data)
goto out;
}
+int nilfs_discard_segments(struct the_nilfs *nilfs, __u64 *segnump,
+ size_t nsegs)
+{
+ sector_t seg_start, seg_end;
+ sector_t start = 0, nblocks = 0;
+ unsigned int sects_per_block;
+ __u64 *sn;
+ int ret = 0;
+
+ sects_per_block = (1 << nilfs->ns_blocksize_bits) /
+ bdev_logical_block_size(nilfs->ns_bdev);
+ for (sn = segnump; sn < segnump + nsegs; sn++) {
+ nilfs_get_segment_range(nilfs, *sn, &seg_start, &seg_end);
+
+ if (!nblocks) {
+ start = seg_start;
+ nblocks = seg_end - seg_start + 1;
+ } else if (start + nblocks == seg_start) {
+ nblocks += seg_end - seg_start + 1;
+ } else {
+ ret = blkdev_issue_discard(nilfs->ns_bdev,
+ start * sects_per_block,
+ nblocks * sects_per_block,
+ GFP_NOFS,
+ DISCARD_FL_BARRIER);
+ if (ret < 0)
+ return ret;
+ nblocks = 0;
+ }
+ }
+ if (nblocks)
+ ret = blkdev_issue_discard(nilfs->ns_bdev,
+ start * sects_per_block,
+ nblocks * sects_per_block,
+ GFP_NOFS, DISCARD_FL_BARRIER);
+ return ret;
+}
+
int nilfs_count_free_blocks(struct the_nilfs *nilfs, sector_t *nblocks)
{
struct inode *dat = nilfs_dat_inode(nilfs);
diff --git a/fs/nilfs2/the_nilfs.h b/fs/nilfs2/the_nilfs.h
index 589786e33464..e9795f1724d7 100644
--- a/fs/nilfs2/the_nilfs.h
+++ b/fs/nilfs2/the_nilfs.h
@@ -38,6 +38,7 @@ enum {
the latest checkpoint was loaded */
THE_NILFS_DISCONTINUED, /* 'next' pointer chain has broken */
THE_NILFS_GC_RUNNING, /* gc process is running */
+ THE_NILFS_SB_DIRTY, /* super block is dirty */
};
/**
@@ -197,6 +198,7 @@ THE_NILFS_FNS(INIT, init)
THE_NILFS_FNS(LOADED, loaded)
THE_NILFS_FNS(DISCONTINUED, discontinued)
THE_NILFS_FNS(GC_RUNNING, gc_running)
+THE_NILFS_FNS(SB_DIRTY, sb_dirty)
/* Minimum interval of periodical update of superblocks (in seconds) */
#define NILFS_SB_FREQ 10
@@ -221,6 +223,7 @@ struct the_nilfs *find_or_create_nilfs(struct block_device *);
void put_nilfs(struct the_nilfs *);
int init_nilfs(struct the_nilfs *, struct nilfs_sb_info *, char *);
int load_nilfs(struct the_nilfs *, struct nilfs_sb_info *);
+int nilfs_discard_segments(struct the_nilfs *, __u64 *, size_t);
int nilfs_count_free_blocks(struct the_nilfs *, sector_t *);
struct nilfs_sb_info *nilfs_find_sbinfo(struct the_nilfs *, int, __u64);
int nilfs_checkpoint_is_mounted(struct the_nilfs *, __u64, int);
diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c
index a94e8bd8eb1f..472cdf29ef82 100644
--- a/fs/notify/inotify/inotify_user.c
+++ b/fs/notify/inotify/inotify_user.c
@@ -29,14 +29,12 @@
#include <linux/init.h> /* module_init */
#include <linux/inotify.h>
#include <linux/kernel.h> /* roundup() */
-#include <linux/magic.h> /* superblock magic number */
-#include <linux/mount.h> /* mntget */
#include <linux/namei.h> /* LOOKUP_FOLLOW */
-#include <linux/path.h> /* struct path */
#include <linux/sched.h> /* struct user */
#include <linux/slab.h> /* struct kmem_cache */
#include <linux/syscalls.h>
#include <linux/types.h>
+#include <linux/anon_inodes.h>
#include <linux/uaccess.h>
#include <linux/poll.h>
#include <linux/wait.h>
@@ -45,8 +43,6 @@
#include <asm/ioctls.h>
-static struct vfsmount *inotify_mnt __read_mostly;
-
/* these are configurable via /proc/sys/fs/inotify/ */
static int inotify_max_user_instances __read_mostly;
static int inotify_max_queued_events __read_mostly;
@@ -645,9 +641,7 @@ SYSCALL_DEFINE1(inotify_init1, int, flags)
{
struct fsnotify_group *group;
struct user_struct *user;
- struct file *filp;
- struct path path;
- int fd, ret;
+ int ret;
/* Check the IN_* constants for consistency. */
BUILD_BUG_ON(IN_CLOEXEC != O_CLOEXEC);
@@ -656,10 +650,6 @@ SYSCALL_DEFINE1(inotify_init1, int, flags)
if (flags & ~(IN_CLOEXEC | IN_NONBLOCK))
return -EINVAL;
- fd = get_unused_fd_flags(flags & O_CLOEXEC);
- if (fd < 0)
- return fd;
-
user = get_current_user();
if (unlikely(atomic_read(&user->inotify_devs) >=
inotify_max_user_instances)) {
@@ -676,27 +666,14 @@ SYSCALL_DEFINE1(inotify_init1, int, flags)
atomic_inc(&user->inotify_devs);
- path.mnt = inotify_mnt;
- path.dentry = inotify_mnt->mnt_root;
- path_get(&path);
- filp = alloc_file(&path, FMODE_READ, &inotify_fops);
- if (!filp)
- goto Enfile;
+ ret = anon_inode_getfd("inotify", &inotify_fops, group,
+ O_RDONLY | flags);
+ if (ret >= 0)
+ return ret;
- filp->f_flags = O_RDONLY | (flags & O_NONBLOCK);
- filp->private_data = group;
-
- fd_install(fd, filp);
-
- return fd;
-
-Enfile:
- ret = -ENFILE;
- path_put(&path);
atomic_dec(&user->inotify_devs);
out_free_uid:
free_uid(user);
- put_unused_fd(fd);
return ret;
}
@@ -783,20 +760,6 @@ out:
return ret;
}
-static int
-inotify_get_sb(struct file_system_type *fs_type, int flags,
- const char *dev_name, void *data, struct vfsmount *mnt)
-{
- return get_sb_pseudo(fs_type, "inotify", NULL,
- INOTIFYFS_SUPER_MAGIC, mnt);
-}
-
-static struct file_system_type inotify_fs_type = {
- .name = "inotifyfs",
- .get_sb = inotify_get_sb,
- .kill_sb = kill_anon_super,
-};
-
/*
* inotify_user_setup - Our initialization function. Note that we cannnot return
* error because we have compiled-in VFS hooks. So an (unlikely) failure here
@@ -804,16 +767,6 @@ static struct file_system_type inotify_fs_type = {
*/
static int __init inotify_user_setup(void)
{
- int ret;
-
- ret = register_filesystem(&inotify_fs_type);
- if (unlikely(ret))
- panic("inotify: register_filesystem returned %d!\n", ret);
-
- inotify_mnt = kern_mount(&inotify_fs_type);
- if (IS_ERR(inotify_mnt))
- panic("inotify: kern_mount ret %ld!\n", PTR_ERR(inotify_mnt));
-
inotify_inode_mark_cachep = KMEM_CACHE(inotify_inode_mark_entry, SLAB_PANIC);
event_priv_cachep = KMEM_CACHE(inotify_event_private_data, SLAB_PANIC);
diff --git a/fs/ntfs/dir.c b/fs/ntfs/dir.c
index 5a9e34475e37..9173e82a45d1 100644
--- a/fs/ntfs/dir.c
+++ b/fs/ntfs/dir.c
@@ -1545,7 +1545,7 @@ static int ntfs_dir_fsync(struct file *filp, struct dentry *dentry,
write_inode_now(bmp_vi, !datasync);
iput(bmp_vi);
}
- ret = ntfs_write_inode(vi, 1);
+ ret = __ntfs_write_inode(vi, 1);
write_inode_now(vi, !datasync);
err = sync_blockdev(vi->i_sb->s_bdev);
if (unlikely(err && !ret))
diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c
index 43179ddd336f..b681c71d7069 100644
--- a/fs/ntfs/file.c
+++ b/fs/ntfs/file.c
@@ -2182,7 +2182,7 @@ static int ntfs_file_fsync(struct file *filp, struct dentry *dentry,
ntfs_debug("Entering for inode 0x%lx.", vi->i_ino);
BUG_ON(S_ISDIR(vi->i_mode));
if (!datasync || !NInoNonResident(NTFS_I(vi)))
- ret = ntfs_write_inode(vi, 1);
+ ret = __ntfs_write_inode(vi, 1);
write_inode_now(vi, !datasync);
/*
* NOTE: If we were to use mapping->private_list (see ext2 and
diff --git a/fs/ntfs/inode.c b/fs/ntfs/inode.c
index dc2505abb6d7..4b57fb1eac2a 100644
--- a/fs/ntfs/inode.c
+++ b/fs/ntfs/inode.c
@@ -2957,7 +2957,7 @@ out:
*
* Return 0 on success and -errno on error.
*/
-int ntfs_write_inode(struct inode *vi, int sync)
+int __ntfs_write_inode(struct inode *vi, int sync)
{
sle64 nt;
ntfs_inode *ni = NTFS_I(vi);
diff --git a/fs/ntfs/inode.h b/fs/ntfs/inode.h
index 117eaf8032a3..9a113544605d 100644
--- a/fs/ntfs/inode.h
+++ b/fs/ntfs/inode.h
@@ -307,12 +307,12 @@ extern void ntfs_truncate_vfs(struct inode *vi);
extern int ntfs_setattr(struct dentry *dentry, struct iattr *attr);
-extern int ntfs_write_inode(struct inode *vi, int sync);
+extern int __ntfs_write_inode(struct inode *vi, int sync);
static inline void ntfs_commit_inode(struct inode *vi)
{
if (!is_bad_inode(vi))
- ntfs_write_inode(vi, 1);
+ __ntfs_write_inode(vi, 1);
return;
}
diff --git a/fs/ntfs/super.c b/fs/ntfs/super.c
index 80b04770e8e9..1cf39dfaee7a 100644
--- a/fs/ntfs/super.c
+++ b/fs/ntfs/super.c
@@ -39,6 +39,7 @@
#include "dir.h"
#include "debug.h"
#include "index.h"
+#include "inode.h"
#include "aops.h"
#include "layout.h"
#include "malloc.h"
@@ -2662,6 +2663,13 @@ static int ntfs_statfs(struct dentry *dentry, struct kstatfs *sfs)
return 0;
}
+#ifdef NTFS_RW
+static int ntfs_write_inode(struct inode *vi, struct writeback_control *wbc)
+{
+ return __ntfs_write_inode(vi, wbc->sync_mode == WB_SYNC_ALL);
+}
+#endif
+
/**
* The complete super operations.
*/
diff --git a/fs/ocfs2/Makefile b/fs/ocfs2/Makefile
index 600d2d2ade11..791c0886c060 100644
--- a/fs/ocfs2/Makefile
+++ b/fs/ocfs2/Makefile
@@ -46,6 +46,7 @@ ocfs2_stackglue-objs := stackglue.o
ocfs2_stack_o2cb-objs := stack_o2cb.o
ocfs2_stack_user-objs := stack_user.o
+obj-$(CONFIG_OCFS2_FS) += dlmfs/
# cluster/ is always needed when OCFS2_FS for masklog support
obj-$(CONFIG_OCFS2_FS) += cluster/
obj-$(CONFIG_OCFS2_FS_O2CB) += dlm/
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c
index d17bdc718f74..2bbe1ecc08c0 100644
--- a/fs/ocfs2/alloc.c
+++ b/fs/ocfs2/alloc.c
@@ -1050,7 +1050,8 @@ static int ocfs2_create_new_meta_bhs(handle_t *handle,
strcpy(eb->h_signature, OCFS2_EXTENT_BLOCK_SIGNATURE);
eb->h_blkno = cpu_to_le64(first_blkno);
eb->h_fs_generation = cpu_to_le32(osb->fs_generation);
- eb->h_suballoc_slot = cpu_to_le16(osb->slot_num);
+ eb->h_suballoc_slot =
+ cpu_to_le16(meta_ac->ac_alloc_slot);
eb->h_suballoc_bit = cpu_to_le16(suballoc_bit_start);
eb->h_list.l_count =
cpu_to_le16(ocfs2_extent_recs_per_eb(osb->sb));
@@ -6037,7 +6038,7 @@ static void ocfs2_truncate_log_worker(struct work_struct *work)
if (status < 0)
mlog_errno(status);
else
- ocfs2_init_inode_steal_slot(osb);
+ ocfs2_init_steal_slots(osb);
mlog_exit(status);
}
diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
index 7e9df11260f4..4c2a6d282c4d 100644
--- a/fs/ocfs2/aops.c
+++ b/fs/ocfs2/aops.c
@@ -577,8 +577,9 @@ static int ocfs2_direct_IO_get_blocks(struct inode *inode, sector_t iblock,
goto bail;
}
- /* We should already CoW the refcounted extent. */
- BUG_ON(ext_flags & OCFS2_EXT_REFCOUNTED);
+ /* We should already CoW the refcounted extent in case of create. */
+ BUG_ON(create && (ext_flags & OCFS2_EXT_REFCOUNTED));
+
/*
* get_more_blocks() expects us to describe a hole by clearing
* the mapped bit on bh_result().
diff --git a/fs/ocfs2/cluster/masklog.c b/fs/ocfs2/cluster/masklog.c
index 1cd2934de615..b39da877b12f 100644
--- a/fs/ocfs2/cluster/masklog.c
+++ b/fs/ocfs2/cluster/masklog.c
@@ -112,6 +112,7 @@ static struct mlog_attribute mlog_attrs[MLOG_MAX_BITS] = {
define_mask(XATTR),
define_mask(QUOTA),
define_mask(REFCOUNT),
+ define_mask(BASTS),
define_mask(ERROR),
define_mask(NOTICE),
define_mask(KTHREAD),
diff --git a/fs/ocfs2/cluster/masklog.h b/fs/ocfs2/cluster/masklog.h
index 9b4d11726cf2..3dfddbec32f2 100644
--- a/fs/ocfs2/cluster/masklog.h
+++ b/fs/ocfs2/cluster/masklog.h
@@ -114,6 +114,7 @@
#define ML_XATTR 0x0000000020000000ULL /* ocfs2 extended attributes */
#define ML_QUOTA 0x0000000040000000ULL /* ocfs2 quota operations */
#define ML_REFCOUNT 0x0000000080000000ULL /* refcount tree operations */
+#define ML_BASTS 0x0000001000000000ULL /* dlmglue asts and basts */
/* bits that are infrequently given and frequently matched in the high word */
#define ML_ERROR 0x0000000100000000ULL /* sent to KERN_ERR */
#define ML_NOTICE 0x0000000200000000ULL /* setn to KERN_NOTICE */
@@ -194,9 +195,9 @@ extern struct mlog_bits mlog_and_bits, mlog_not_bits;
* previous token if args expands to nothing.
*/
#define __mlog_printk(level, fmt, args...) \
- printk(level "(%u,%lu):%s:%d " fmt, task_pid_nr(current), \
- __mlog_cpu_guess, __PRETTY_FUNCTION__, __LINE__ , \
- ##args)
+ printk(level "(%s,%u,%lu):%s:%d " fmt, current->comm, \
+ task_pid_nr(current), __mlog_cpu_guess, \
+ __PRETTY_FUNCTION__, __LINE__ , ##args)
#define mlog(mask, fmt, args...) do { \
u64 __m = MLOG_MASK_PREFIX | (mask); \
diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c
index 28c3ec238796..765d66c70989 100644
--- a/fs/ocfs2/dir.c
+++ b/fs/ocfs2/dir.c
@@ -2439,7 +2439,7 @@ static int ocfs2_dx_dir_attach_index(struct ocfs2_super *osb,
dx_root = (struct ocfs2_dx_root_block *)dx_root_bh->b_data;
memset(dx_root, 0, osb->sb->s_blocksize);
strcpy(dx_root->dr_signature, OCFS2_DX_ROOT_SIGNATURE);
- dx_root->dr_suballoc_slot = cpu_to_le16(osb->slot_num);
+ dx_root->dr_suballoc_slot = cpu_to_le16(meta_ac->ac_alloc_slot);
dx_root->dr_suballoc_bit = cpu_to_le16(dr_suballoc_bit);
dx_root->dr_fs_generation = cpu_to_le32(osb->fs_generation);
dx_root->dr_blkno = cpu_to_le64(dr_blkno);
diff --git a/fs/ocfs2/dlm/Makefile b/fs/ocfs2/dlm/Makefile
index 190361375700..dcebf0d920fa 100644
--- a/fs/ocfs2/dlm/Makefile
+++ b/fs/ocfs2/dlm/Makefile
@@ -1,8 +1,7 @@
EXTRA_CFLAGS += -Ifs/ocfs2
-obj-$(CONFIG_OCFS2_FS_O2CB) += ocfs2_dlm.o ocfs2_dlmfs.o
+obj-$(CONFIG_OCFS2_FS_O2CB) += ocfs2_dlm.o
ocfs2_dlm-objs := dlmdomain.o dlmdebug.o dlmthread.o dlmrecovery.o \
dlmmaster.o dlmast.o dlmconvert.o dlmlock.o dlmunlock.o dlmver.o
-ocfs2_dlmfs-objs := userdlm.o dlmfs.o dlmfsver.o
diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c
index 344bcf90cbf4..b4f99de2caf3 100644
--- a/fs/ocfs2/dlm/dlmrecovery.c
+++ b/fs/ocfs2/dlm/dlmrecovery.c
@@ -310,7 +310,7 @@ static int dlm_recovery_thread(void *data)
mlog(0, "dlm thread running for %s...\n", dlm->name);
while (!kthread_should_stop()) {
- if (dlm_joined(dlm)) {
+ if (dlm_domain_fully_joined(dlm)) {
status = dlm_do_recovery(dlm);
if (status == -EAGAIN) {
/* do not sleep, recheck immediately. */
diff --git a/fs/ocfs2/dlmfs/Makefile b/fs/ocfs2/dlmfs/Makefile
new file mode 100644
index 000000000000..df69b4856d0d
--- /dev/null
+++ b/fs/ocfs2/dlmfs/Makefile
@@ -0,0 +1,5 @@
+EXTRA_CFLAGS += -Ifs/ocfs2
+
+obj-$(CONFIG_OCFS2_FS) += ocfs2_dlmfs.o
+
+ocfs2_dlmfs-objs := userdlm.o dlmfs.o dlmfsver.o
diff --git a/fs/ocfs2/dlm/dlmfs.c b/fs/ocfs2/dlmfs/dlmfs.c
index 02bf17808bdc..1b0de157a08c 100644
--- a/fs/ocfs2/dlm/dlmfs.c
+++ b/fs/ocfs2/dlmfs/dlmfs.c
@@ -43,24 +43,17 @@
#include <linux/init.h>
#include <linux/string.h>
#include <linux/backing-dev.h>
+#include <linux/poll.h>
#include <asm/uaccess.h>
-
-#include "cluster/nodemanager.h"
-#include "cluster/heartbeat.h"
-#include "cluster/tcp.h"
-
-#include "dlmapi.h"
-
+#include "stackglue.h"
#include "userdlm.h"
-
#include "dlmfsver.h"
#define MLOG_MASK_PREFIX ML_DLMFS
#include "cluster/masklog.h"
-#include "ocfs2_lockingver.h"
static const struct super_operations dlmfs_ops;
static const struct file_operations dlmfs_file_operations;
@@ -71,15 +64,46 @@ static struct kmem_cache *dlmfs_inode_cache;
struct workqueue_struct *user_dlm_worker;
+
+
/*
- * This is the userdlmfs locking protocol version.
+ * These are the ABI capabilities of dlmfs.
+ *
+ * Over time, dlmfs has added some features that were not part of the
+ * initial ABI. Unfortunately, some of these features are not detectable
+ * via standard usage. For example, Linux's default poll always returns
+ * POLLIN, so there is no way for a caller of poll(2) to know when dlmfs
+ * added poll support. Instead, we provide this list of new capabilities.
+ *
+ * Capabilities is a read-only attribute. We do it as a module parameter
+ * so we can discover it whether dlmfs is built in, loaded, or even not
+ * loaded.
*
- * See fs/ocfs2/dlmglue.c for more details on locking versions.
+ * The ABI features are local to this machine's dlmfs mount. This is
+ * distinct from the locking protocol, which is concerned with inter-node
+ * interaction.
+ *
+ * Capabilities:
+ * - bast : POLLIN against the file descriptor of a held lock
+ * signifies a bast fired on the lock.
*/
-static const struct dlm_protocol_version user_locking_protocol = {
- .pv_major = OCFS2_LOCKING_PROTOCOL_MAJOR,
- .pv_minor = OCFS2_LOCKING_PROTOCOL_MINOR,
-};
+#define DLMFS_CAPABILITIES "bast stackglue"
+extern int param_set_dlmfs_capabilities(const char *val,
+ struct kernel_param *kp)
+{
+ printk(KERN_ERR "%s: readonly parameter\n", kp->name);
+ return -EINVAL;
+}
+static int param_get_dlmfs_capabilities(char *buffer,
+ struct kernel_param *kp)
+{
+ return strlcpy(buffer, DLMFS_CAPABILITIES,
+ strlen(DLMFS_CAPABILITIES) + 1);
+}
+module_param_call(capabilities, param_set_dlmfs_capabilities,
+ param_get_dlmfs_capabilities, NULL, 0444);
+MODULE_PARM_DESC(capabilities, DLMFS_CAPABILITIES);
+
/*
* decodes a set of open flags into a valid lock level and a set of flags.
@@ -179,13 +203,46 @@ static int dlmfs_file_release(struct inode *inode,
return 0;
}
+/*
+ * We do ->setattr() just to override size changes. Our size is the size
+ * of the LVB and nothing else.
+ */
+static int dlmfs_file_setattr(struct dentry *dentry, struct iattr *attr)
+{
+ int error;
+ struct inode *inode = dentry->d_inode;
+
+ attr->ia_valid &= ~ATTR_SIZE;
+ error = inode_change_ok(inode, attr);
+ if (!error)
+ error = inode_setattr(inode, attr);
+
+ return error;
+}
+
+static unsigned int dlmfs_file_poll(struct file *file, poll_table *wait)
+{
+ int event = 0;
+ struct inode *inode = file->f_path.dentry->d_inode;
+ struct dlmfs_inode_private *ip = DLMFS_I(inode);
+
+ poll_wait(file, &ip->ip_lockres.l_event, wait);
+
+ spin_lock(&ip->ip_lockres.l_lock);
+ if (ip->ip_lockres.l_flags & USER_LOCK_BLOCKED)
+ event = POLLIN | POLLRDNORM;
+ spin_unlock(&ip->ip_lockres.l_lock);
+
+ return event;
+}
+
static ssize_t dlmfs_file_read(struct file *filp,
char __user *buf,
size_t count,
loff_t *ppos)
{
int bytes_left;
- ssize_t readlen;
+ ssize_t readlen, got;
char *lvb_buf;
struct inode *inode = filp->f_path.dentry->d_inode;
@@ -211,9 +268,13 @@ static ssize_t dlmfs_file_read(struct file *filp,
if (!lvb_buf)
return -ENOMEM;
- user_dlm_read_lvb(inode, lvb_buf, readlen);
- bytes_left = __copy_to_user(buf, lvb_buf, readlen);
- readlen -= bytes_left;
+ got = user_dlm_read_lvb(inode, lvb_buf, readlen);
+ if (got) {
+ BUG_ON(got != readlen);
+ bytes_left = __copy_to_user(buf, lvb_buf, readlen);
+ readlen -= bytes_left;
+ } else
+ readlen = 0;
kfree(lvb_buf);
@@ -272,7 +333,7 @@ static void dlmfs_init_once(void *foo)
struct dlmfs_inode_private *ip =
(struct dlmfs_inode_private *) foo;
- ip->ip_dlm = NULL;
+ ip->ip_conn = NULL;
ip->ip_parent = NULL;
inode_init_once(&ip->ip_vfs_inode);
@@ -314,14 +375,14 @@ static void dlmfs_clear_inode(struct inode *inode)
goto clear_fields;
}
- mlog(0, "we're a directory, ip->ip_dlm = 0x%p\n", ip->ip_dlm);
+ mlog(0, "we're a directory, ip->ip_conn = 0x%p\n", ip->ip_conn);
/* we must be a directory. If required, lets unregister the
* dlm context now. */
- if (ip->ip_dlm)
- user_dlm_unregister_context(ip->ip_dlm);
+ if (ip->ip_conn)
+ user_dlm_unregister(ip->ip_conn);
clear_fields:
ip->ip_parent = NULL;
- ip->ip_dlm = NULL;
+ ip->ip_conn = NULL;
}
static struct backing_dev_info dlmfs_backing_dev_info = {
@@ -371,7 +432,7 @@ static struct inode *dlmfs_get_inode(struct inode *parent,
inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
ip = DLMFS_I(inode);
- ip->ip_dlm = DLMFS_I(parent)->ip_dlm;
+ ip->ip_conn = DLMFS_I(parent)->ip_conn;
switch (mode & S_IFMT) {
default:
@@ -425,13 +486,12 @@ static int dlmfs_mkdir(struct inode * dir,
struct inode *inode = NULL;
struct qstr *domain = &dentry->d_name;
struct dlmfs_inode_private *ip;
- struct dlm_ctxt *dlm;
- struct dlm_protocol_version proto = user_locking_protocol;
+ struct ocfs2_cluster_connection *conn;
mlog(0, "mkdir %.*s\n", domain->len, domain->name);
/* verify that we have a proper domain */
- if (domain->len >= O2NM_MAX_NAME_LEN) {
+ if (domain->len >= GROUP_NAME_MAX) {
status = -EINVAL;
mlog(ML_ERROR, "invalid domain name for directory.\n");
goto bail;
@@ -446,14 +506,14 @@ static int dlmfs_mkdir(struct inode * dir,
ip = DLMFS_I(inode);
- dlm = user_dlm_register_context(domain, &proto);
- if (IS_ERR(dlm)) {
- status = PTR_ERR(dlm);
+ conn = user_dlm_register(domain);
+ if (IS_ERR(conn)) {
+ status = PTR_ERR(conn);
mlog(ML_ERROR, "Error %d could not register domain \"%.*s\"\n",
status, domain->len, domain->name);
goto bail;
}
- ip->ip_dlm = dlm;
+ ip->ip_conn = conn;
inc_nlink(dir);
d_instantiate(dentry, inode);
@@ -549,6 +609,7 @@ static int dlmfs_fill_super(struct super_block * sb,
static const struct file_operations dlmfs_file_operations = {
.open = dlmfs_file_open,
.release = dlmfs_file_release,
+ .poll = dlmfs_file_poll,
.read = dlmfs_file_read,
.write = dlmfs_file_write,
};
@@ -576,6 +637,7 @@ static const struct super_operations dlmfs_ops = {
static const struct inode_operations dlmfs_file_inode_operations = {
.getattr = simple_getattr,
+ .setattr = dlmfs_file_setattr,
};
static int dlmfs_get_sb(struct file_system_type *fs_type,
@@ -620,6 +682,7 @@ static int __init init_dlmfs_fs(void)
}
cleanup_worker = 1;
+ user_dlm_set_locking_protocol();
status = register_filesystem(&dlmfs_fs_type);
bail:
if (status) {
diff --git a/fs/ocfs2/dlm/dlmfsver.c b/fs/ocfs2/dlmfs/dlmfsver.c
index a733b3321f83..a733b3321f83 100644
--- a/fs/ocfs2/dlm/dlmfsver.c
+++ b/fs/ocfs2/dlmfs/dlmfsver.c
diff --git a/fs/ocfs2/dlm/dlmfsver.h b/fs/ocfs2/dlmfs/dlmfsver.h
index f35eadbed25c..f35eadbed25c 100644
--- a/fs/ocfs2/dlm/dlmfsver.h
+++ b/fs/ocfs2/dlmfs/dlmfsver.h
diff --git a/fs/ocfs2/dlm/userdlm.c b/fs/ocfs2/dlmfs/userdlm.c
index 4cb1d3dae250..0499e3fb7bdb 100644
--- a/fs/ocfs2/dlm/userdlm.c
+++ b/fs/ocfs2/dlmfs/userdlm.c
@@ -34,18 +34,19 @@
#include <linux/types.h>
#include <linux/crc32.h>
-
-#include "cluster/nodemanager.h"
-#include "cluster/heartbeat.h"
-#include "cluster/tcp.h"
-
-#include "dlmapi.h"
-
+#include "ocfs2_lockingver.h"
+#include "stackglue.h"
#include "userdlm.h"
#define MLOG_MASK_PREFIX ML_DLMFS
#include "cluster/masklog.h"
+
+static inline struct user_lock_res *user_lksb_to_lock_res(struct ocfs2_dlm_lksb *lksb)
+{
+ return container_of(lksb, struct user_lock_res, l_lksb);
+}
+
static inline int user_check_wait_flag(struct user_lock_res *lockres,
int flag)
{
@@ -73,15 +74,15 @@ static inline void user_wait_on_blocked_lock(struct user_lock_res *lockres)
}
/* I heart container_of... */
-static inline struct dlm_ctxt *
-dlm_ctxt_from_user_lockres(struct user_lock_res *lockres)
+static inline struct ocfs2_cluster_connection *
+cluster_connection_from_user_lockres(struct user_lock_res *lockres)
{
struct dlmfs_inode_private *ip;
ip = container_of(lockres,
struct dlmfs_inode_private,
ip_lockres);
- return ip->ip_dlm;
+ return ip->ip_conn;
}
static struct inode *
@@ -103,9 +104,9 @@ static inline void user_recover_from_dlm_error(struct user_lock_res *lockres)
}
#define user_log_dlm_error(_func, _stat, _lockres) do { \
- mlog(ML_ERROR, "Dlm error \"%s\" while calling %s on " \
- "resource %.*s: %s\n", dlm_errname(_stat), _func, \
- _lockres->l_namelen, _lockres->l_name, dlm_errmsg(_stat)); \
+ mlog(ML_ERROR, "Dlm error %d while calling %s on " \
+ "resource %.*s\n", _stat, _func, \
+ _lockres->l_namelen, _lockres->l_name); \
} while (0)
/* WARNING: This function lives in a world where the only three lock
@@ -113,34 +114,35 @@ static inline void user_recover_from_dlm_error(struct user_lock_res *lockres)
* lock types are added. */
static inline int user_highest_compat_lock_level(int level)
{
- int new_level = LKM_EXMODE;
+ int new_level = DLM_LOCK_EX;
- if (level == LKM_EXMODE)
- new_level = LKM_NLMODE;
- else if (level == LKM_PRMODE)
- new_level = LKM_PRMODE;
+ if (level == DLM_LOCK_EX)
+ new_level = DLM_LOCK_NL;
+ else if (level == DLM_LOCK_PR)
+ new_level = DLM_LOCK_PR;
return new_level;
}
-static void user_ast(void *opaque)
+static void user_ast(struct ocfs2_dlm_lksb *lksb)
{
- struct user_lock_res *lockres = opaque;
- struct dlm_lockstatus *lksb;
+ struct user_lock_res *lockres = user_lksb_to_lock_res(lksb);
+ int status;
- mlog(0, "AST fired for lockres %.*s\n", lockres->l_namelen,
- lockres->l_name);
+ mlog(ML_BASTS, "AST fired for lockres %.*s, level %d => %d\n",
+ lockres->l_namelen, lockres->l_name, lockres->l_level,
+ lockres->l_requested);
spin_lock(&lockres->l_lock);
- lksb = &(lockres->l_lksb);
- if (lksb->status != DLM_NORMAL) {
+ status = ocfs2_dlm_lock_status(&lockres->l_lksb);
+ if (status) {
mlog(ML_ERROR, "lksb status value of %u on lockres %.*s\n",
- lksb->status, lockres->l_namelen, lockres->l_name);
+ status, lockres->l_namelen, lockres->l_name);
spin_unlock(&lockres->l_lock);
return;
}
- mlog_bug_on_msg(lockres->l_requested == LKM_IVMODE,
+ mlog_bug_on_msg(lockres->l_requested == DLM_LOCK_IV,
"Lockres %.*s, requested ivmode. flags 0x%x\n",
lockres->l_namelen, lockres->l_name, lockres->l_flags);
@@ -148,13 +150,13 @@ static void user_ast(void *opaque)
if (lockres->l_requested < lockres->l_level) {
if (lockres->l_requested <=
user_highest_compat_lock_level(lockres->l_blocking)) {
- lockres->l_blocking = LKM_NLMODE;
+ lockres->l_blocking = DLM_LOCK_NL;
lockres->l_flags &= ~USER_LOCK_BLOCKED;
}
}
lockres->l_level = lockres->l_requested;
- lockres->l_requested = LKM_IVMODE;
+ lockres->l_requested = DLM_LOCK_IV;
lockres->l_flags |= USER_LOCK_ATTACHED;
lockres->l_flags &= ~USER_LOCK_BUSY;
@@ -193,11 +195,11 @@ static void __user_dlm_cond_queue_lockres(struct user_lock_res *lockres)
return;
switch (lockres->l_blocking) {
- case LKM_EXMODE:
+ case DLM_LOCK_EX:
if (!lockres->l_ex_holders && !lockres->l_ro_holders)
queue = 1;
break;
- case LKM_PRMODE:
+ case DLM_LOCK_PR:
if (!lockres->l_ex_holders)
queue = 1;
break;
@@ -209,12 +211,12 @@ static void __user_dlm_cond_queue_lockres(struct user_lock_res *lockres)
__user_dlm_queue_lockres(lockres);
}
-static void user_bast(void *opaque, int level)
+static void user_bast(struct ocfs2_dlm_lksb *lksb, int level)
{
- struct user_lock_res *lockres = opaque;
+ struct user_lock_res *lockres = user_lksb_to_lock_res(lksb);
- mlog(0, "Blocking AST fired for lockres %.*s. Blocking level %d\n",
- lockres->l_namelen, lockres->l_name, level);
+ mlog(ML_BASTS, "BAST fired for lockres %.*s, blocking %d, level %d\n",
+ lockres->l_namelen, lockres->l_name, level, lockres->l_level);
spin_lock(&lockres->l_lock);
lockres->l_flags |= USER_LOCK_BLOCKED;
@@ -227,15 +229,15 @@ static void user_bast(void *opaque, int level)
wake_up(&lockres->l_event);
}
-static void user_unlock_ast(void *opaque, enum dlm_status status)
+static void user_unlock_ast(struct ocfs2_dlm_lksb *lksb, int status)
{
- struct user_lock_res *lockres = opaque;
+ struct user_lock_res *lockres = user_lksb_to_lock_res(lksb);
- mlog(0, "UNLOCK AST called on lock %.*s\n", lockres->l_namelen,
- lockres->l_name);
+ mlog(ML_BASTS, "UNLOCK AST fired for lockres %.*s, flags 0x%x\n",
+ lockres->l_namelen, lockres->l_name, lockres->l_flags);
- if (status != DLM_NORMAL && status != DLM_CANCELGRANT)
- mlog(ML_ERROR, "Dlm returns status %d\n", status);
+ if (status)
+ mlog(ML_ERROR, "dlm returns status %d\n", status);
spin_lock(&lockres->l_lock);
/* The teardown flag gets set early during the unlock process,
@@ -243,7 +245,7 @@ static void user_unlock_ast(void *opaque, enum dlm_status status)
* for a concurrent cancel. */
if (lockres->l_flags & USER_LOCK_IN_TEARDOWN
&& !(lockres->l_flags & USER_LOCK_IN_CANCEL)) {
- lockres->l_level = LKM_IVMODE;
+ lockres->l_level = DLM_LOCK_IV;
} else if (status == DLM_CANCELGRANT) {
/* We tried to cancel a convert request, but it was
* already granted. Don't clear the busy flag - the
@@ -254,7 +256,7 @@ static void user_unlock_ast(void *opaque, enum dlm_status status)
} else {
BUG_ON(!(lockres->l_flags & USER_LOCK_IN_CANCEL));
/* Cancel succeeded, we want to re-queue */
- lockres->l_requested = LKM_IVMODE; /* cancel an
+ lockres->l_requested = DLM_LOCK_IV; /* cancel an
* upconvert
* request. */
lockres->l_flags &= ~USER_LOCK_IN_CANCEL;
@@ -271,6 +273,21 @@ out_noclear:
wake_up(&lockres->l_event);
}
+/*
+ * This is the userdlmfs locking protocol version.
+ *
+ * See fs/ocfs2/dlmglue.c for more details on locking versions.
+ */
+static struct ocfs2_locking_protocol user_dlm_lproto = {
+ .lp_max_version = {
+ .pv_major = OCFS2_LOCKING_PROTOCOL_MAJOR,
+ .pv_minor = OCFS2_LOCKING_PROTOCOL_MINOR,
+ },
+ .lp_lock_ast = user_ast,
+ .lp_blocking_ast = user_bast,
+ .lp_unlock_ast = user_unlock_ast,
+};
+
static inline void user_dlm_drop_inode_ref(struct user_lock_res *lockres)
{
struct inode *inode;
@@ -283,10 +300,10 @@ static void user_dlm_unblock_lock(struct work_struct *work)
int new_level, status;
struct user_lock_res *lockres =
container_of(work, struct user_lock_res, l_work);
- struct dlm_ctxt *dlm = dlm_ctxt_from_user_lockres(lockres);
+ struct ocfs2_cluster_connection *conn =
+ cluster_connection_from_user_lockres(lockres);
- mlog(0, "processing lockres %.*s\n", lockres->l_namelen,
- lockres->l_name);
+ mlog(0, "lockres %.*s\n", lockres->l_namelen, lockres->l_name);
spin_lock(&lockres->l_lock);
@@ -304,17 +321,23 @@ static void user_dlm_unblock_lock(struct work_struct *work)
* flag, and finally we might get another bast which re-queues
* us before our ast for the downconvert is called. */
if (!(lockres->l_flags & USER_LOCK_BLOCKED)) {
+ mlog(ML_BASTS, "lockres %.*s USER_LOCK_BLOCKED\n",
+ lockres->l_namelen, lockres->l_name);
spin_unlock(&lockres->l_lock);
goto drop_ref;
}
if (lockres->l_flags & USER_LOCK_IN_TEARDOWN) {
+ mlog(ML_BASTS, "lockres %.*s USER_LOCK_IN_TEARDOWN\n",
+ lockres->l_namelen, lockres->l_name);
spin_unlock(&lockres->l_lock);
goto drop_ref;
}
if (lockres->l_flags & USER_LOCK_BUSY) {
if (lockres->l_flags & USER_LOCK_IN_CANCEL) {
+ mlog(ML_BASTS, "lockres %.*s USER_LOCK_IN_CANCEL\n",
+ lockres->l_namelen, lockres->l_name);
spin_unlock(&lockres->l_lock);
goto drop_ref;
}
@@ -322,32 +345,31 @@ static void user_dlm_unblock_lock(struct work_struct *work)
lockres->l_flags |= USER_LOCK_IN_CANCEL;
spin_unlock(&lockres->l_lock);
- status = dlmunlock(dlm,
- &lockres->l_lksb,
- LKM_CANCEL,
- user_unlock_ast,
- lockres);
- if (status != DLM_NORMAL)
- user_log_dlm_error("dlmunlock", status, lockres);
+ status = ocfs2_dlm_unlock(conn, &lockres->l_lksb,
+ DLM_LKF_CANCEL);
+ if (status)
+ user_log_dlm_error("ocfs2_dlm_unlock", status, lockres);
goto drop_ref;
}
/* If there are still incompat holders, we can exit safely
* without worrying about re-queueing this lock as that will
* happen on the last call to user_cluster_unlock. */
- if ((lockres->l_blocking == LKM_EXMODE)
+ if ((lockres->l_blocking == DLM_LOCK_EX)
&& (lockres->l_ex_holders || lockres->l_ro_holders)) {
spin_unlock(&lockres->l_lock);
- mlog(0, "can't downconvert for ex: ro = %u, ex = %u\n",
- lockres->l_ro_holders, lockres->l_ex_holders);
+ mlog(ML_BASTS, "lockres %.*s, EX/PR Holders %u,%u\n",
+ lockres->l_namelen, lockres->l_name,
+ lockres->l_ex_holders, lockres->l_ro_holders);
goto drop_ref;
}
- if ((lockres->l_blocking == LKM_PRMODE)
+ if ((lockres->l_blocking == DLM_LOCK_PR)
&& lockres->l_ex_holders) {
spin_unlock(&lockres->l_lock);
- mlog(0, "can't downconvert for pr: ex = %u\n",
- lockres->l_ex_holders);
+ mlog(ML_BASTS, "lockres %.*s, EX Holders %u\n",
+ lockres->l_namelen, lockres->l_name,
+ lockres->l_ex_holders);
goto drop_ref;
}
@@ -355,22 +377,17 @@ static void user_dlm_unblock_lock(struct work_struct *work)
new_level = user_highest_compat_lock_level(lockres->l_blocking);
lockres->l_requested = new_level;
lockres->l_flags |= USER_LOCK_BUSY;
- mlog(0, "Downconvert lock from %d to %d\n",
- lockres->l_level, new_level);
+ mlog(ML_BASTS, "lockres %.*s, downconvert %d => %d\n",
+ lockres->l_namelen, lockres->l_name, lockres->l_level, new_level);
spin_unlock(&lockres->l_lock);
/* need lock downconvert request now... */
- status = dlmlock(dlm,
- new_level,
- &lockres->l_lksb,
- LKM_CONVERT|LKM_VALBLK,
- lockres->l_name,
- lockres->l_namelen,
- user_ast,
- lockres,
- user_bast);
- if (status != DLM_NORMAL) {
- user_log_dlm_error("dlmlock", status, lockres);
+ status = ocfs2_dlm_lock(conn, new_level, &lockres->l_lksb,
+ DLM_LKF_CONVERT|DLM_LKF_VALBLK,
+ lockres->l_name,
+ lockres->l_namelen);
+ if (status) {
+ user_log_dlm_error("ocfs2_dlm_lock", status, lockres);
user_recover_from_dlm_error(lockres);
}
@@ -382,10 +399,10 @@ static inline void user_dlm_inc_holders(struct user_lock_res *lockres,
int level)
{
switch(level) {
- case LKM_EXMODE:
+ case DLM_LOCK_EX:
lockres->l_ex_holders++;
break;
- case LKM_PRMODE:
+ case DLM_LOCK_PR:
lockres->l_ro_holders++;
break;
default:
@@ -410,20 +427,19 @@ int user_dlm_cluster_lock(struct user_lock_res *lockres,
int lkm_flags)
{
int status, local_flags;
- struct dlm_ctxt *dlm = dlm_ctxt_from_user_lockres(lockres);
+ struct ocfs2_cluster_connection *conn =
+ cluster_connection_from_user_lockres(lockres);
- if (level != LKM_EXMODE &&
- level != LKM_PRMODE) {
+ if (level != DLM_LOCK_EX &&
+ level != DLM_LOCK_PR) {
mlog(ML_ERROR, "lockres %.*s: invalid request!\n",
lockres->l_namelen, lockres->l_name);
status = -EINVAL;
goto bail;
}
- mlog(0, "lockres %.*s: asking for %s lock, passed flags = 0x%x\n",
- lockres->l_namelen, lockres->l_name,
- (level == LKM_EXMODE) ? "LKM_EXMODE" : "LKM_PRMODE",
- lkm_flags);
+ mlog(ML_BASTS, "lockres %.*s, level %d, flags = 0x%x\n",
+ lockres->l_namelen, lockres->l_name, level, lkm_flags);
again:
if (signal_pending(current)) {
@@ -457,35 +473,26 @@ again:
}
if (level > lockres->l_level) {
- local_flags = lkm_flags | LKM_VALBLK;
- if (lockres->l_level != LKM_IVMODE)
- local_flags |= LKM_CONVERT;
+ local_flags = lkm_flags | DLM_LKF_VALBLK;
+ if (lockres->l_level != DLM_LOCK_IV)
+ local_flags |= DLM_LKF_CONVERT;
lockres->l_requested = level;
lockres->l_flags |= USER_LOCK_BUSY;
spin_unlock(&lockres->l_lock);
- BUG_ON(level == LKM_IVMODE);
- BUG_ON(level == LKM_NLMODE);
+ BUG_ON(level == DLM_LOCK_IV);
+ BUG_ON(level == DLM_LOCK_NL);
/* call dlm_lock to upgrade lock now */
- status = dlmlock(dlm,
- level,
- &lockres->l_lksb,
- local_flags,
- lockres->l_name,
- lockres->l_namelen,
- user_ast,
- lockres,
- user_bast);
- if (status != DLM_NORMAL) {
- if ((lkm_flags & LKM_NOQUEUE) &&
- (status == DLM_NOTQUEUED))
- status = -EAGAIN;
- else {
- user_log_dlm_error("dlmlock", status, lockres);
- status = -EINVAL;
- }
+ status = ocfs2_dlm_lock(conn, level, &lockres->l_lksb,
+ local_flags, lockres->l_name,
+ lockres->l_namelen);
+ if (status) {
+ if ((lkm_flags & DLM_LKF_NOQUEUE) &&
+ (status != -EAGAIN))
+ user_log_dlm_error("ocfs2_dlm_lock",
+ status, lockres);
user_recover_from_dlm_error(lockres);
goto bail;
}
@@ -506,11 +513,11 @@ static inline void user_dlm_dec_holders(struct user_lock_res *lockres,
int level)
{
switch(level) {
- case LKM_EXMODE:
+ case DLM_LOCK_EX:
BUG_ON(!lockres->l_ex_holders);
lockres->l_ex_holders--;
break;
- case LKM_PRMODE:
+ case DLM_LOCK_PR:
BUG_ON(!lockres->l_ro_holders);
lockres->l_ro_holders--;
break;
@@ -522,8 +529,8 @@ static inline void user_dlm_dec_holders(struct user_lock_res *lockres,
void user_dlm_cluster_unlock(struct user_lock_res *lockres,
int level)
{
- if (level != LKM_EXMODE &&
- level != LKM_PRMODE) {
+ if (level != DLM_LOCK_EX &&
+ level != DLM_LOCK_PR) {
mlog(ML_ERROR, "lockres %.*s: invalid request!\n",
lockres->l_namelen, lockres->l_name);
return;
@@ -540,33 +547,40 @@ void user_dlm_write_lvb(struct inode *inode,
unsigned int len)
{
struct user_lock_res *lockres = &DLMFS_I(inode)->ip_lockres;
- char *lvb = lockres->l_lksb.lvb;
+ char *lvb;
BUG_ON(len > DLM_LVB_LEN);
spin_lock(&lockres->l_lock);
- BUG_ON(lockres->l_level < LKM_EXMODE);
+ BUG_ON(lockres->l_level < DLM_LOCK_EX);
+ lvb = ocfs2_dlm_lvb(&lockres->l_lksb);
memcpy(lvb, val, len);
spin_unlock(&lockres->l_lock);
}
-void user_dlm_read_lvb(struct inode *inode,
- char *val,
- unsigned int len)
+ssize_t user_dlm_read_lvb(struct inode *inode,
+ char *val,
+ unsigned int len)
{
struct user_lock_res *lockres = &DLMFS_I(inode)->ip_lockres;
- char *lvb = lockres->l_lksb.lvb;
+ char *lvb;
+ ssize_t ret = len;
BUG_ON(len > DLM_LVB_LEN);
spin_lock(&lockres->l_lock);
- BUG_ON(lockres->l_level < LKM_PRMODE);
- memcpy(val, lvb, len);
+ BUG_ON(lockres->l_level < DLM_LOCK_PR);
+ if (ocfs2_dlm_lvb_valid(&lockres->l_lksb)) {
+ lvb = ocfs2_dlm_lvb(&lockres->l_lksb);
+ memcpy(val, lvb, len);
+ } else
+ ret = 0;
spin_unlock(&lockres->l_lock);
+ return ret;
}
void user_dlm_lock_res_init(struct user_lock_res *lockres,
@@ -576,9 +590,9 @@ void user_dlm_lock_res_init(struct user_lock_res *lockres,
spin_lock_init(&lockres->l_lock);
init_waitqueue_head(&lockres->l_event);
- lockres->l_level = LKM_IVMODE;
- lockres->l_requested = LKM_IVMODE;
- lockres->l_blocking = LKM_IVMODE;
+ lockres->l_level = DLM_LOCK_IV;
+ lockres->l_requested = DLM_LOCK_IV;
+ lockres->l_blocking = DLM_LOCK_IV;
/* should have been checked before getting here. */
BUG_ON(dentry->d_name.len >= USER_DLM_LOCK_ID_MAX_LEN);
@@ -592,9 +606,10 @@ void user_dlm_lock_res_init(struct user_lock_res *lockres,
int user_dlm_destroy_lock(struct user_lock_res *lockres)
{
int status = -EBUSY;
- struct dlm_ctxt *dlm = dlm_ctxt_from_user_lockres(lockres);
+ struct ocfs2_cluster_connection *conn =
+ cluster_connection_from_user_lockres(lockres);
- mlog(0, "asked to destroy %.*s\n", lockres->l_namelen, lockres->l_name);
+ mlog(ML_BASTS, "lockres %.*s\n", lockres->l_namelen, lockres->l_name);
spin_lock(&lockres->l_lock);
if (lockres->l_flags & USER_LOCK_IN_TEARDOWN) {
@@ -627,14 +642,9 @@ int user_dlm_destroy_lock(struct user_lock_res *lockres)
lockres->l_flags |= USER_LOCK_BUSY;
spin_unlock(&lockres->l_lock);
- status = dlmunlock(dlm,
- &lockres->l_lksb,
- LKM_VALBLK,
- user_unlock_ast,
- lockres);
- if (status != DLM_NORMAL) {
- user_log_dlm_error("dlmunlock", status, lockres);
- status = -EINVAL;
+ status = ocfs2_dlm_unlock(conn, &lockres->l_lksb, DLM_LKF_VALBLK);
+ if (status) {
+ user_log_dlm_error("ocfs2_dlm_unlock", status, lockres);
goto bail;
}
@@ -645,32 +655,34 @@ bail:
return status;
}
-struct dlm_ctxt *user_dlm_register_context(struct qstr *name,
- struct dlm_protocol_version *proto)
+static void user_dlm_recovery_handler_noop(int node_num,
+ void *recovery_data)
{
- struct dlm_ctxt *dlm;
- u32 dlm_key;
- char *domain;
-
- domain = kmalloc(name->len + 1, GFP_NOFS);
- if (!domain) {
- mlog_errno(-ENOMEM);
- return ERR_PTR(-ENOMEM);
- }
+ /* We ignore recovery events */
+ return;
+}
- dlm_key = crc32_le(0, name->name, name->len);
+void user_dlm_set_locking_protocol(void)
+{
+ ocfs2_stack_glue_set_max_proto_version(&user_dlm_lproto.lp_max_version);
+}
- snprintf(domain, name->len + 1, "%.*s", name->len, name->name);
+struct ocfs2_cluster_connection *user_dlm_register(struct qstr *name)
+{
+ int rc;
+ struct ocfs2_cluster_connection *conn;
- dlm = dlm_register_domain(domain, dlm_key, proto);
- if (IS_ERR(dlm))
- mlog_errno(PTR_ERR(dlm));
+ rc = ocfs2_cluster_connect_agnostic(name->name, name->len,
+ &user_dlm_lproto,
+ user_dlm_recovery_handler_noop,
+ NULL, &conn);
+ if (rc)
+ mlog_errno(rc);
- kfree(domain);
- return dlm;
+ return rc ? ERR_PTR(rc) : conn;
}
-void user_dlm_unregister_context(struct dlm_ctxt *dlm)
+void user_dlm_unregister(struct ocfs2_cluster_connection *conn)
{
- dlm_unregister_domain(dlm);
+ ocfs2_cluster_disconnect(conn, 0);
}
diff --git a/fs/ocfs2/dlm/userdlm.h b/fs/ocfs2/dlmfs/userdlm.h
index 0c3cc03c61fa..3b42d79531d7 100644
--- a/fs/ocfs2/dlm/userdlm.h
+++ b/fs/ocfs2/dlmfs/userdlm.h
@@ -57,7 +57,7 @@ struct user_lock_res {
int l_level;
unsigned int l_ro_holders;
unsigned int l_ex_holders;
- struct dlm_lockstatus l_lksb;
+ struct ocfs2_dlm_lksb l_lksb;
int l_requested;
int l_blocking;
@@ -80,15 +80,15 @@ void user_dlm_cluster_unlock(struct user_lock_res *lockres,
void user_dlm_write_lvb(struct inode *inode,
const char *val,
unsigned int len);
-void user_dlm_read_lvb(struct inode *inode,
- char *val,
- unsigned int len);
-struct dlm_ctxt *user_dlm_register_context(struct qstr *name,
- struct dlm_protocol_version *proto);
-void user_dlm_unregister_context(struct dlm_ctxt *dlm);
+ssize_t user_dlm_read_lvb(struct inode *inode,
+ char *val,
+ unsigned int len);
+struct ocfs2_cluster_connection *user_dlm_register(struct qstr *name);
+void user_dlm_unregister(struct ocfs2_cluster_connection *conn);
+void user_dlm_set_locking_protocol(void);
struct dlmfs_inode_private {
- struct dlm_ctxt *ip_dlm;
+ struct ocfs2_cluster_connection *ip_conn;
struct user_lock_res ip_lockres; /* unused for directories. */
struct inode *ip_parent;
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index e044019cb3b1..8298608d4165 100644
--- a/fs/ocfs2/dlmglue.c
+++ b/fs/ocfs2/dlmglue.c
@@ -297,6 +297,11 @@ static inline int ocfs2_is_inode_lock(struct ocfs2_lock_res *lockres)
lockres->l_type == OCFS2_LOCK_TYPE_OPEN;
}
+static inline struct ocfs2_lock_res *ocfs2_lksb_to_lock_res(struct ocfs2_dlm_lksb *lksb)
+{
+ return container_of(lksb, struct ocfs2_lock_res, l_lksb);
+}
+
static inline struct inode *ocfs2_lock_res_inode(struct ocfs2_lock_res *lockres)
{
BUG_ON(!ocfs2_is_inode_lock(lockres));
@@ -927,6 +932,10 @@ static int ocfs2_generic_handle_bast(struct ocfs2_lock_res *lockres,
lockres->l_blocking = level;
}
+ mlog(ML_BASTS, "lockres %s, block %d, level %d, l_block %d, dwn %d\n",
+ lockres->l_name, level, lockres->l_level, lockres->l_blocking,
+ needs_downconvert);
+
if (needs_downconvert)
lockres_or_flags(lockres, OCFS2_LOCK_BLOCKED);
@@ -1040,18 +1049,17 @@ static unsigned int lockres_set_pending(struct ocfs2_lock_res *lockres)
return lockres->l_pending_gen;
}
-
-static void ocfs2_blocking_ast(void *opaque, int level)
+static void ocfs2_blocking_ast(struct ocfs2_dlm_lksb *lksb, int level)
{
- struct ocfs2_lock_res *lockres = opaque;
+ struct ocfs2_lock_res *lockres = ocfs2_lksb_to_lock_res(lksb);
struct ocfs2_super *osb = ocfs2_get_lockres_osb(lockres);
int needs_downconvert;
unsigned long flags;
BUG_ON(level <= DLM_LOCK_NL);
- mlog(0, "BAST fired for lockres %s, blocking %d, level %d type %s\n",
- lockres->l_name, level, lockres->l_level,
+ mlog(ML_BASTS, "BAST fired for lockres %s, blocking %d, level %d, "
+ "type %s\n", lockres->l_name, level, lockres->l_level,
ocfs2_lock_type_string(lockres->l_type));
/*
@@ -1072,9 +1080,9 @@ static void ocfs2_blocking_ast(void *opaque, int level)
ocfs2_wake_downconvert_thread(osb);
}
-static void ocfs2_locking_ast(void *opaque)
+static void ocfs2_locking_ast(struct ocfs2_dlm_lksb *lksb)
{
- struct ocfs2_lock_res *lockres = opaque;
+ struct ocfs2_lock_res *lockres = ocfs2_lksb_to_lock_res(lksb);
struct ocfs2_super *osb = ocfs2_get_lockres_osb(lockres);
unsigned long flags;
int status;
@@ -1095,6 +1103,10 @@ static void ocfs2_locking_ast(void *opaque)
return;
}
+ mlog(ML_BASTS, "AST fired for lockres %s, action %d, unlock %d, "
+ "level %d => %d\n", lockres->l_name, lockres->l_action,
+ lockres->l_unlock_action, lockres->l_level, lockres->l_requested);
+
switch(lockres->l_action) {
case OCFS2_AST_ATTACH:
ocfs2_generic_handle_attach_action(lockres);
@@ -1107,8 +1119,8 @@ static void ocfs2_locking_ast(void *opaque)
ocfs2_generic_handle_downconvert_action(lockres);
break;
default:
- mlog(ML_ERROR, "lockres %s: ast fired with invalid action: %u "
- "lockres flags = 0x%lx, unlock action: %u\n",
+ mlog(ML_ERROR, "lockres %s: AST fired with invalid action: %u, "
+ "flags 0x%lx, unlock: %u\n",
lockres->l_name, lockres->l_action, lockres->l_flags,
lockres->l_unlock_action);
BUG();
@@ -1134,6 +1146,88 @@ out:
spin_unlock_irqrestore(&lockres->l_lock, flags);
}
+static void ocfs2_unlock_ast(struct ocfs2_dlm_lksb *lksb, int error)
+{
+ struct ocfs2_lock_res *lockres = ocfs2_lksb_to_lock_res(lksb);
+ unsigned long flags;
+
+ mlog_entry_void();
+
+ mlog(ML_BASTS, "UNLOCK AST fired for lockres %s, action = %d\n",
+ lockres->l_name, lockres->l_unlock_action);
+
+ spin_lock_irqsave(&lockres->l_lock, flags);
+ if (error) {
+ mlog(ML_ERROR, "Dlm passes error %d for lock %s, "
+ "unlock_action %d\n", error, lockres->l_name,
+ lockres->l_unlock_action);
+ spin_unlock_irqrestore(&lockres->l_lock, flags);
+ mlog_exit_void();
+ return;
+ }
+
+ switch(lockres->l_unlock_action) {
+ case OCFS2_UNLOCK_CANCEL_CONVERT:
+ mlog(0, "Cancel convert success for %s\n", lockres->l_name);
+ lockres->l_action = OCFS2_AST_INVALID;
+ /* Downconvert thread may have requeued this lock, we
+ * need to wake it. */
+ if (lockres->l_flags & OCFS2_LOCK_BLOCKED)
+ ocfs2_wake_downconvert_thread(ocfs2_get_lockres_osb(lockres));
+ break;
+ case OCFS2_UNLOCK_DROP_LOCK:
+ lockres->l_level = DLM_LOCK_IV;
+ break;
+ default:
+ BUG();
+ }
+
+ lockres_clear_flags(lockres, OCFS2_LOCK_BUSY);
+ lockres->l_unlock_action = OCFS2_UNLOCK_INVALID;
+ wake_up(&lockres->l_event);
+ spin_unlock_irqrestore(&lockres->l_lock, flags);
+
+ mlog_exit_void();
+}
+
+/*
+ * This is the filesystem locking protocol. It provides the lock handling
+ * hooks for the underlying DLM. It has a maximum version number.
+ * The version number allows interoperability with systems running at
+ * the same major number and an equal or smaller minor number.
+ *
+ * Whenever the filesystem does new things with locks (adds or removes a
+ * lock, orders them differently, does different things underneath a lock),
+ * the version must be changed. The protocol is negotiated when joining
+ * the dlm domain. A node may join the domain if its major version is
+ * identical to all other nodes and its minor version is greater than
+ * or equal to all other nodes. When its minor version is greater than
+ * the other nodes, it will run at the minor version specified by the
+ * other nodes.
+ *
+ * If a locking change is made that will not be compatible with older
+ * versions, the major number must be increased and the minor version set
+ * to zero. If a change merely adds a behavior that can be disabled when
+ * speaking to older versions, the minor version must be increased. If a
+ * change adds a fully backwards compatible change (eg, LVB changes that
+ * are just ignored by older versions), the version does not need to be
+ * updated.
+ */
+static struct ocfs2_locking_protocol lproto = {
+ .lp_max_version = {
+ .pv_major = OCFS2_LOCKING_PROTOCOL_MAJOR,
+ .pv_minor = OCFS2_LOCKING_PROTOCOL_MINOR,
+ },
+ .lp_lock_ast = ocfs2_locking_ast,
+ .lp_blocking_ast = ocfs2_blocking_ast,
+ .lp_unlock_ast = ocfs2_unlock_ast,
+};
+
+void ocfs2_set_locking_protocol(void)
+{
+ ocfs2_stack_glue_set_max_proto_version(&lproto.lp_max_version);
+}
+
static inline void ocfs2_recover_from_dlm_error(struct ocfs2_lock_res *lockres,
int convert)
{
@@ -1189,8 +1283,7 @@ static int ocfs2_lock_create(struct ocfs2_super *osb,
&lockres->l_lksb,
dlm_flags,
lockres->l_name,
- OCFS2_LOCK_ID_MAX_LEN - 1,
- lockres);
+ OCFS2_LOCK_ID_MAX_LEN - 1);
lockres_clear_pending(lockres, gen, osb);
if (ret) {
ocfs2_log_dlm_error("ocfs2_dlm_lock", ret, lockres);
@@ -1412,7 +1505,7 @@ again:
BUG_ON(level == DLM_LOCK_IV);
BUG_ON(level == DLM_LOCK_NL);
- mlog(0, "lock %s, convert from %d to level = %d\n",
+ mlog(ML_BASTS, "lockres %s, convert from %d to %d\n",
lockres->l_name, lockres->l_level, level);
/* call dlm_lock to upgrade lock now */
@@ -1421,8 +1514,7 @@ again:
&lockres->l_lksb,
lkm_flags,
lockres->l_name,
- OCFS2_LOCK_ID_MAX_LEN - 1,
- lockres);
+ OCFS2_LOCK_ID_MAX_LEN - 1);
lockres_clear_pending(lockres, gen, osb);
if (ret) {
if (!(lkm_flags & DLM_LKF_NOQUEUE) ||
@@ -1859,8 +1951,7 @@ int ocfs2_file_lock(struct file *file, int ex, int trylock)
spin_unlock_irqrestore(&lockres->l_lock, flags);
ret = ocfs2_dlm_lock(osb->cconn, level, &lockres->l_lksb, lkm_flags,
- lockres->l_name, OCFS2_LOCK_ID_MAX_LEN - 1,
- lockres);
+ lockres->l_name, OCFS2_LOCK_ID_MAX_LEN - 1);
if (ret) {
if (!trylock || (ret != -EAGAIN)) {
ocfs2_log_dlm_error("ocfs2_dlm_lock", ret, lockres);
@@ -2989,7 +3080,7 @@ int ocfs2_dlm_init(struct ocfs2_super *osb)
status = ocfs2_cluster_connect(osb->osb_cluster_stack,
osb->uuid_str,
strlen(osb->uuid_str),
- ocfs2_do_node_down, osb,
+ &lproto, ocfs2_do_node_down, osb,
&conn);
if (status) {
mlog_errno(status);
@@ -3056,50 +3147,6 @@ void ocfs2_dlm_shutdown(struct ocfs2_super *osb,
mlog_exit_void();
}
-static void ocfs2_unlock_ast(void *opaque, int error)
-{
- struct ocfs2_lock_res *lockres = opaque;
- unsigned long flags;
-
- mlog_entry_void();
-
- mlog(0, "UNLOCK AST called on lock %s, action = %d\n", lockres->l_name,
- lockres->l_unlock_action);
-
- spin_lock_irqsave(&lockres->l_lock, flags);
- if (error) {
- mlog(ML_ERROR, "Dlm passes error %d for lock %s, "
- "unlock_action %d\n", error, lockres->l_name,
- lockres->l_unlock_action);
- spin_unlock_irqrestore(&lockres->l_lock, flags);
- mlog_exit_void();
- return;
- }
-
- switch(lockres->l_unlock_action) {
- case OCFS2_UNLOCK_CANCEL_CONVERT:
- mlog(0, "Cancel convert success for %s\n", lockres->l_name);
- lockres->l_action = OCFS2_AST_INVALID;
- /* Downconvert thread may have requeued this lock, we
- * need to wake it. */
- if (lockres->l_flags & OCFS2_LOCK_BLOCKED)
- ocfs2_wake_downconvert_thread(ocfs2_get_lockres_osb(lockres));
- break;
- case OCFS2_UNLOCK_DROP_LOCK:
- lockres->l_level = DLM_LOCK_IV;
- break;
- default:
- BUG();
- }
-
- lockres_clear_flags(lockres, OCFS2_LOCK_BUSY);
- lockres->l_unlock_action = OCFS2_UNLOCK_INVALID;
- wake_up(&lockres->l_event);
- spin_unlock_irqrestore(&lockres->l_lock, flags);
-
- mlog_exit_void();
-}
-
static int ocfs2_drop_lock(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres)
{
@@ -3167,8 +3214,7 @@ static int ocfs2_drop_lock(struct ocfs2_super *osb,
mlog(0, "lock %s\n", lockres->l_name);
- ret = ocfs2_dlm_unlock(osb->cconn, &lockres->l_lksb, lkm_flags,
- lockres);
+ ret = ocfs2_dlm_unlock(osb->cconn, &lockres->l_lksb, lkm_flags);
if (ret) {
ocfs2_log_dlm_error("ocfs2_dlm_unlock", ret, lockres);
mlog(ML_ERROR, "lockres flags: %lu\n", lockres->l_flags);
@@ -3276,13 +3322,20 @@ static unsigned int ocfs2_prepare_downconvert(struct ocfs2_lock_res *lockres,
BUG_ON(lockres->l_blocking <= DLM_LOCK_NL);
if (lockres->l_level <= new_level) {
- mlog(ML_ERROR, "lockres->l_level (%d) <= new_level (%d)\n",
- lockres->l_level, new_level);
+ mlog(ML_ERROR, "lockres %s, lvl %d <= %d, blcklst %d, mask %d, "
+ "type %d, flags 0x%lx, hold %d %d, act %d %d, req %d, "
+ "block %d, pgen %d\n", lockres->l_name, lockres->l_level,
+ new_level, list_empty(&lockres->l_blocked_list),
+ list_empty(&lockres->l_mask_waiters), lockres->l_type,
+ lockres->l_flags, lockres->l_ro_holders,
+ lockres->l_ex_holders, lockres->l_action,
+ lockres->l_unlock_action, lockres->l_requested,
+ lockres->l_blocking, lockres->l_pending_gen);
BUG();
}
- mlog(0, "lock %s, new_level = %d, l_blocking = %d\n",
- lockres->l_name, new_level, lockres->l_blocking);
+ mlog(ML_BASTS, "lockres %s, level %d => %d, blocking %d\n",
+ lockres->l_name, lockres->l_level, new_level, lockres->l_blocking);
lockres->l_action = OCFS2_AST_DOWNCONVERT;
lockres->l_requested = new_level;
@@ -3301,6 +3354,9 @@ static int ocfs2_downconvert_lock(struct ocfs2_super *osb,
mlog_entry_void();
+ mlog(ML_BASTS, "lockres %s, level %d => %d\n", lockres->l_name,
+ lockres->l_level, new_level);
+
if (lvb)
dlm_flags |= DLM_LKF_VALBLK;
@@ -3309,8 +3365,7 @@ static int ocfs2_downconvert_lock(struct ocfs2_super *osb,
&lockres->l_lksb,
dlm_flags,
lockres->l_name,
- OCFS2_LOCK_ID_MAX_LEN - 1,
- lockres);
+ OCFS2_LOCK_ID_MAX_LEN - 1);
lockres_clear_pending(lockres, generation, osb);
if (ret) {
ocfs2_log_dlm_error("ocfs2_dlm_lock", ret, lockres);
@@ -3331,14 +3386,12 @@ static int ocfs2_prepare_cancel_convert(struct ocfs2_super *osb,
assert_spin_locked(&lockres->l_lock);
mlog_entry_void();
- mlog(0, "lock %s\n", lockres->l_name);
if (lockres->l_unlock_action == OCFS2_UNLOCK_CANCEL_CONVERT) {
/* If we're already trying to cancel a lock conversion
* then just drop the spinlock and allow the caller to
* requeue this lock. */
-
- mlog(0, "Lockres %s, skip convert\n", lockres->l_name);
+ mlog(ML_BASTS, "lockres %s, skip convert\n", lockres->l_name);
return 0;
}
@@ -3353,6 +3406,8 @@ static int ocfs2_prepare_cancel_convert(struct ocfs2_super *osb,
"lock %s, invalid flags: 0x%lx\n",
lockres->l_name, lockres->l_flags);
+ mlog(ML_BASTS, "lockres %s\n", lockres->l_name);
+
return 1;
}
@@ -3362,16 +3417,15 @@ static int ocfs2_cancel_convert(struct ocfs2_super *osb,
int ret;
mlog_entry_void();
- mlog(0, "lock %s\n", lockres->l_name);
ret = ocfs2_dlm_unlock(osb->cconn, &lockres->l_lksb,
- DLM_LKF_CANCEL, lockres);
+ DLM_LKF_CANCEL);
if (ret) {
ocfs2_log_dlm_error("ocfs2_dlm_unlock", ret, lockres);
ocfs2_recover_from_dlm_error(lockres, 0);
}
- mlog(0, "lock %s return from ocfs2_dlm_unlock\n", lockres->l_name);
+ mlog(ML_BASTS, "lockres %s\n", lockres->l_name);
mlog_exit(ret);
return ret;
@@ -3428,8 +3482,11 @@ recheck:
* at the same time they set OCFS2_DLM_BUSY. They must
* clear OCFS2_DLM_PENDING after dlm_lock() returns.
*/
- if (lockres->l_flags & OCFS2_LOCK_PENDING)
+ if (lockres->l_flags & OCFS2_LOCK_PENDING) {
+ mlog(ML_BASTS, "lockres %s, ReQ: Pending\n",
+ lockres->l_name);
goto leave_requeue;
+ }
ctl->requeue = 1;
ret = ocfs2_prepare_cancel_convert(osb, lockres);
@@ -3461,6 +3518,7 @@ recheck:
*/
if (lockres->l_level == DLM_LOCK_NL) {
BUG_ON(lockres->l_ex_holders || lockres->l_ro_holders);
+ mlog(ML_BASTS, "lockres %s, Aborting dc\n", lockres->l_name);
lockres->l_blocking = DLM_LOCK_NL;
lockres_clear_flags(lockres, OCFS2_LOCK_BLOCKED);
spin_unlock_irqrestore(&lockres->l_lock, flags);
@@ -3470,28 +3528,41 @@ recheck:
/* if we're blocking an exclusive and we have *any* holders,
* then requeue. */
if ((lockres->l_blocking == DLM_LOCK_EX)
- && (lockres->l_ex_holders || lockres->l_ro_holders))
+ && (lockres->l_ex_holders || lockres->l_ro_holders)) {
+ mlog(ML_BASTS, "lockres %s, ReQ: EX/PR Holders %u,%u\n",
+ lockres->l_name, lockres->l_ex_holders,
+ lockres->l_ro_holders);
goto leave_requeue;
+ }
/* If it's a PR we're blocking, then only
* requeue if we've got any EX holders */
if (lockres->l_blocking == DLM_LOCK_PR &&
- lockres->l_ex_holders)
+ lockres->l_ex_holders) {
+ mlog(ML_BASTS, "lockres %s, ReQ: EX Holders %u\n",
+ lockres->l_name, lockres->l_ex_holders);
goto leave_requeue;
+ }
/*
* Can we get a lock in this state if the holder counts are
* zero? The meta data unblock code used to check this.
*/
if ((lockres->l_ops->flags & LOCK_TYPE_REQUIRES_REFRESH)
- && (lockres->l_flags & OCFS2_LOCK_REFRESHING))
+ && (lockres->l_flags & OCFS2_LOCK_REFRESHING)) {
+ mlog(ML_BASTS, "lockres %s, ReQ: Lock Refreshing\n",
+ lockres->l_name);
goto leave_requeue;
+ }
new_level = ocfs2_highest_compat_lock_level(lockres->l_blocking);
if (lockres->l_ops->check_downconvert
- && !lockres->l_ops->check_downconvert(lockres, new_level))
+ && !lockres->l_ops->check_downconvert(lockres, new_level)) {
+ mlog(ML_BASTS, "lockres %s, ReQ: Checkpointing\n",
+ lockres->l_name);
goto leave_requeue;
+ }
/* If we get here, then we know that there are no more
* incompatible holders (and anyone asking for an incompatible
@@ -3509,13 +3580,19 @@ recheck:
ctl->unblock_action = lockres->l_ops->downconvert_worker(lockres, blocking);
- if (ctl->unblock_action == UNBLOCK_STOP_POST)
+ if (ctl->unblock_action == UNBLOCK_STOP_POST) {
+ mlog(ML_BASTS, "lockres %s, UNBLOCK_STOP_POST\n",
+ lockres->l_name);
goto leave;
+ }
spin_lock_irqsave(&lockres->l_lock, flags);
if ((blocking != lockres->l_blocking) || (level != lockres->l_level)) {
/* If this changed underneath us, then we can't drop
* it just yet. */
+ mlog(ML_BASTS, "lockres %s, block=%d:%d, level=%d:%d, "
+ "Recheck\n", lockres->l_name, blocking,
+ lockres->l_blocking, level, lockres->l_level);
goto recheck;
}
@@ -3910,45 +3987,6 @@ void ocfs2_refcount_unlock(struct ocfs2_refcount_tree *ref_tree, int ex)
ocfs2_cluster_unlock(osb, lockres, level);
}
-/*
- * This is the filesystem locking protocol. It provides the lock handling
- * hooks for the underlying DLM. It has a maximum version number.
- * The version number allows interoperability with systems running at
- * the same major number and an equal or smaller minor number.
- *
- * Whenever the filesystem does new things with locks (adds or removes a
- * lock, orders them differently, does different things underneath a lock),
- * the version must be changed. The protocol is negotiated when joining
- * the dlm domain. A node may join the domain if its major version is
- * identical to all other nodes and its minor version is greater than
- * or equal to all other nodes. When its minor version is greater than
- * the other nodes, it will run at the minor version specified by the
- * other nodes.
- *
- * If a locking change is made that will not be compatible with older
- * versions, the major number must be increased and the minor version set
- * to zero. If a change merely adds a behavior that can be disabled when
- * speaking to older versions, the minor version must be increased. If a
- * change adds a fully backwards compatible change (eg, LVB changes that
- * are just ignored by older versions), the version does not need to be
- * updated.
- */
-static struct ocfs2_locking_protocol lproto = {
- .lp_max_version = {
- .pv_major = OCFS2_LOCKING_PROTOCOL_MAJOR,
- .pv_minor = OCFS2_LOCKING_PROTOCOL_MINOR,
- },
- .lp_lock_ast = ocfs2_locking_ast,
- .lp_blocking_ast = ocfs2_blocking_ast,
- .lp_unlock_ast = ocfs2_unlock_ast,
-};
-
-void ocfs2_set_locking_protocol(void)
-{
- ocfs2_stack_glue_set_locking_protocol(&lproto);
-}
-
-
static void ocfs2_process_blocked_lock(struct ocfs2_super *osb,
struct ocfs2_lock_res *lockres)
{
@@ -3965,7 +4003,7 @@ static void ocfs2_process_blocked_lock(struct ocfs2_super *osb,
BUG_ON(!lockres);
BUG_ON(!lockres->l_ops);
- mlog(0, "lockres %s blocked.\n", lockres->l_name);
+ mlog(ML_BASTS, "lockres %s blocked\n", lockres->l_name);
/* Detect whether a lock has been marked as going away while
* the downconvert thread was processing other things. A lock can
@@ -3988,7 +4026,7 @@ unqueue:
} else
ocfs2_schedule_blocked_lock(osb, lockres);
- mlog(0, "lockres %s, requeue = %s.\n", lockres->l_name,
+ mlog(ML_BASTS, "lockres %s, requeue = %s.\n", lockres->l_name,
ctl.requeue ? "yes" : "no");
spin_unlock_irqrestore(&lockres->l_lock, flags);
@@ -4010,7 +4048,7 @@ static void ocfs2_schedule_blocked_lock(struct ocfs2_super *osb,
/* Do not schedule a lock for downconvert when it's on
* the way to destruction - any nodes wanting access
* to the resource will get it soon. */
- mlog(0, "Lockres %s won't be scheduled: flags 0x%lx\n",
+ mlog(ML_BASTS, "lockres %s won't be scheduled: flags 0x%lx\n",
lockres->l_name, lockres->l_flags);
return;
}
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index 558ce0312421..5b52547d6299 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -993,10 +993,9 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
}
if (size_change && attr->ia_size != i_size_read(inode)) {
- if (attr->ia_size > sb->s_maxbytes) {
- status = -EFBIG;
+ status = inode_newsize_ok(inode, attr->ia_size);
+ if (status)
goto bail_unlock;
- }
if (i_size_read(inode) > attr->ia_size) {
if (ocfs2_should_order_data(inode)) {
@@ -1836,6 +1835,8 @@ static int ocfs2_prepare_inode_for_write(struct dentry *dentry,
&meta_level);
if (has_refcount)
*has_refcount = 1;
+ if (direct_io)
+ *direct_io = 0;
}
if (ret < 0) {
@@ -1859,10 +1860,6 @@ static int ocfs2_prepare_inode_for_write(struct dentry *dentry,
break;
}
- if (has_refcount && *has_refcount == 1) {
- *direct_io = 0;
- break;
- }
/*
* Allowing concurrent direct writes means
* i_size changes wouldn't be synchronized, so
@@ -2043,7 +2040,7 @@ out_dio:
* async dio is going to do it in the future or an end_io after an
* error has already done it.
*/
- if (ret == -EIOCBQUEUED || !ocfs2_iocb_is_rw_locked(iocb)) {
+ if ((ret == -EIOCBQUEUED) || (!ocfs2_iocb_is_rw_locked(iocb))) {
rw_level = -1;
have_alloc_sem = 0;
}
diff --git a/fs/ocfs2/ioctl.h b/fs/ocfs2/ioctl.h
index cf9a5ee30fef..0cd5323bd3f0 100644
--- a/fs/ocfs2/ioctl.h
+++ b/fs/ocfs2/ioctl.h
@@ -7,10 +7,10 @@
*
*/
-#ifndef OCFS2_IOCTL_H
-#define OCFS2_IOCTL_H
+#ifndef OCFS2_IOCTL_PROTO_H
+#define OCFS2_IOCTL_PROTO_H
long ocfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
long ocfs2_compat_ioctl(struct file *file, unsigned cmd, unsigned long arg);
-#endif /* OCFS2_IOCTL_H */
+#endif /* OCFS2_IOCTL_PROTO_H */
diff --git a/fs/ocfs2/localalloc.c b/fs/ocfs2/localalloc.c
index ac10f83edb95..ca992d91f511 100644
--- a/fs/ocfs2/localalloc.c
+++ b/fs/ocfs2/localalloc.c
@@ -476,7 +476,7 @@ out_mutex:
out:
if (!status)
- ocfs2_init_inode_steal_slot(osb);
+ ocfs2_init_steal_slots(osb);
mlog_exit(status);
return status;
}
diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h
index 740f448041e2..1238b491db90 100644
--- a/fs/ocfs2/ocfs2.h
+++ b/fs/ocfs2/ocfs2.h
@@ -42,6 +42,7 @@
#include "ocfs2_fs.h"
#include "ocfs2_lockid.h"
+#include "ocfs2_ioctl.h"
/* For struct ocfs2_blockcheck_stats */
#include "blockcheck.h"
@@ -159,7 +160,7 @@ struct ocfs2_lock_res {
int l_level;
unsigned int l_ro_holders;
unsigned int l_ex_holders;
- union ocfs2_dlm_lksb l_lksb;
+ struct ocfs2_dlm_lksb l_lksb;
/* used from AST/BAST funcs. */
enum ocfs2_ast_action l_action;
@@ -305,7 +306,9 @@ struct ocfs2_super
u32 s_next_generation;
unsigned long osb_flags;
s16 s_inode_steal_slot;
+ s16 s_meta_steal_slot;
atomic_t s_num_inodes_stolen;
+ atomic_t s_num_meta_stolen;
unsigned long s_mount_opt;
unsigned int s_atime_quantum;
@@ -760,33 +763,6 @@ static inline unsigned int ocfs2_megabytes_to_clusters(struct super_block *sb,
return megs << (20 - OCFS2_SB(sb)->s_clustersize_bits);
}
-static inline void ocfs2_init_inode_steal_slot(struct ocfs2_super *osb)
-{
- spin_lock(&osb->osb_lock);
- osb->s_inode_steal_slot = OCFS2_INVALID_SLOT;
- spin_unlock(&osb->osb_lock);
- atomic_set(&osb->s_num_inodes_stolen, 0);
-}
-
-static inline void ocfs2_set_inode_steal_slot(struct ocfs2_super *osb,
- s16 slot)
-{
- spin_lock(&osb->osb_lock);
- osb->s_inode_steal_slot = slot;
- spin_unlock(&osb->osb_lock);
-}
-
-static inline s16 ocfs2_get_inode_steal_slot(struct ocfs2_super *osb)
-{
- s16 slot;
-
- spin_lock(&osb->osb_lock);
- slot = osb->s_inode_steal_slot;
- spin_unlock(&osb->osb_lock);
-
- return slot;
-}
-
#define ocfs2_set_bit ext2_set_bit
#define ocfs2_clear_bit ext2_clear_bit
#define ocfs2_test_bit ext2_test_bit
diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h
index 7638a38c32bc..bb37218a7978 100644
--- a/fs/ocfs2/ocfs2_fs.h
+++ b/fs/ocfs2/ocfs2_fs.h
@@ -254,63 +254,6 @@
* refcount tree */
/*
- * ioctl commands
- */
-#define OCFS2_IOC_GETFLAGS _IOR('f', 1, long)
-#define OCFS2_IOC_SETFLAGS _IOW('f', 2, long)
-#define OCFS2_IOC32_GETFLAGS _IOR('f', 1, int)
-#define OCFS2_IOC32_SETFLAGS _IOW('f', 2, int)
-
-/*
- * Space reservation / allocation / free ioctls and argument structure
- * are designed to be compatible with XFS.
- *
- * ALLOCSP* and FREESP* are not and will never be supported, but are
- * included here for completeness.
- */
-struct ocfs2_space_resv {
- __s16 l_type;
- __s16 l_whence;
- __s64 l_start;
- __s64 l_len; /* len == 0 means until end of file */
- __s32 l_sysid;
- __u32 l_pid;
- __s32 l_pad[4]; /* reserve area */
-};
-
-#define OCFS2_IOC_ALLOCSP _IOW ('X', 10, struct ocfs2_space_resv)
-#define OCFS2_IOC_FREESP _IOW ('X', 11, struct ocfs2_space_resv)
-#define OCFS2_IOC_RESVSP _IOW ('X', 40, struct ocfs2_space_resv)
-#define OCFS2_IOC_UNRESVSP _IOW ('X', 41, struct ocfs2_space_resv)
-#define OCFS2_IOC_ALLOCSP64 _IOW ('X', 36, struct ocfs2_space_resv)
-#define OCFS2_IOC_FREESP64 _IOW ('X', 37, struct ocfs2_space_resv)
-#define OCFS2_IOC_RESVSP64 _IOW ('X', 42, struct ocfs2_space_resv)
-#define OCFS2_IOC_UNRESVSP64 _IOW ('X', 43, struct ocfs2_space_resv)
-
-/* Used to pass group descriptor data when online resize is done */
-struct ocfs2_new_group_input {
- __u64 group; /* Group descriptor's blkno. */
- __u32 clusters; /* Total number of clusters in this group */
- __u32 frees; /* Total free clusters in this group */
- __u16 chain; /* Chain for this group */
- __u16 reserved1;
- __u32 reserved2;
-};
-
-#define OCFS2_IOC_GROUP_EXTEND _IOW('o', 1, int)
-#define OCFS2_IOC_GROUP_ADD _IOW('o', 2,struct ocfs2_new_group_input)
-#define OCFS2_IOC_GROUP_ADD64 _IOW('o', 3,struct ocfs2_new_group_input)
-
-/* Used to pass 2 file names to reflink. */
-struct reflink_arguments {
- __u64 old_path;
- __u64 new_path;
- __u64 preserve;
-};
-#define OCFS2_IOC_REFLINK _IOW('o', 4, struct reflink_arguments)
-
-
-/*
* Journal Flags (ocfs2_dinode.id1.journal1.i_flags)
*/
#define OCFS2_JOURNAL_DIRTY_FL (0x00000001) /* Journal needs recovery */
diff --git a/fs/ocfs2/ocfs2_ioctl.h b/fs/ocfs2/ocfs2_ioctl.h
new file mode 100644
index 000000000000..2d3420af1a83
--- /dev/null
+++ b/fs/ocfs2/ocfs2_ioctl.h
@@ -0,0 +1,79 @@
+/* -*- mode: c; c-basic-offset: 8; -*-
+ * vim: noexpandtab sw=8 ts=8 sts=0:
+ *
+ * ocfs2_ioctl.h
+ *
+ * Defines OCFS2 ioctls.
+ *
+ * Copyright (C) 2010 Oracle. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License, version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ */
+
+#ifndef OCFS2_IOCTL_H
+#define OCFS2_IOCTL_H
+
+/*
+ * ioctl commands
+ */
+#define OCFS2_IOC_GETFLAGS _IOR('f', 1, long)
+#define OCFS2_IOC_SETFLAGS _IOW('f', 2, long)
+#define OCFS2_IOC32_GETFLAGS _IOR('f', 1, int)
+#define OCFS2_IOC32_SETFLAGS _IOW('f', 2, int)
+
+/*
+ * Space reservation / allocation / free ioctls and argument structure
+ * are designed to be compatible with XFS.
+ *
+ * ALLOCSP* and FREESP* are not and will never be supported, but are
+ * included here for completeness.
+ */
+struct ocfs2_space_resv {
+ __s16 l_type;
+ __s16 l_whence;
+ __s64 l_start;
+ __s64 l_len; /* len == 0 means until end of file */
+ __s32 l_sysid;
+ __u32 l_pid;
+ __s32 l_pad[4]; /* reserve area */
+};
+
+#define OCFS2_IOC_ALLOCSP _IOW ('X', 10, struct ocfs2_space_resv)
+#define OCFS2_IOC_FREESP _IOW ('X', 11, struct ocfs2_space_resv)
+#define OCFS2_IOC_RESVSP _IOW ('X', 40, struct ocfs2_space_resv)
+#define OCFS2_IOC_UNRESVSP _IOW ('X', 41, struct ocfs2_space_resv)
+#define OCFS2_IOC_ALLOCSP64 _IOW ('X', 36, struct ocfs2_space_resv)
+#define OCFS2_IOC_FREESP64 _IOW ('X', 37, struct ocfs2_space_resv)
+#define OCFS2_IOC_RESVSP64 _IOW ('X', 42, struct ocfs2_space_resv)
+#define OCFS2_IOC_UNRESVSP64 _IOW ('X', 43, struct ocfs2_space_resv)
+
+/* Used to pass group descriptor data when online resize is done */
+struct ocfs2_new_group_input {
+ __u64 group; /* Group descriptor's blkno. */
+ __u32 clusters; /* Total number of clusters in this group */
+ __u32 frees; /* Total free clusters in this group */
+ __u16 chain; /* Chain for this group */
+ __u16 reserved1;
+ __u32 reserved2;
+};
+
+#define OCFS2_IOC_GROUP_EXTEND _IOW('o', 1, int)
+#define OCFS2_IOC_GROUP_ADD _IOW('o', 2,struct ocfs2_new_group_input)
+#define OCFS2_IOC_GROUP_ADD64 _IOW('o', 3,struct ocfs2_new_group_input)
+
+/* Used to pass 2 file names to reflink. */
+struct reflink_arguments {
+ __u64 old_path;
+ __u64 new_path;
+ __u64 preserve;
+};
+#define OCFS2_IOC_REFLINK _IOW('o', 4, struct reflink_arguments)
+
+#endif /* OCFS2_IOCTL_H */
diff --git a/fs/ocfs2/ocfs2_lockingver.h b/fs/ocfs2/ocfs2_lockingver.h
index 82d5eeac0fff..2e45c8d2ea7e 100644
--- a/fs/ocfs2/ocfs2_lockingver.h
+++ b/fs/ocfs2/ocfs2_lockingver.h
@@ -23,6 +23,8 @@
/*
* The protocol version for ocfs2 cluster locking. See dlmglue.c for
* more details.
+ *
+ * 1.0 - Initial locking version from ocfs2 1.4.
*/
#define OCFS2_LOCKING_PROTOCOL_MAJOR 1
#define OCFS2_LOCKING_PROTOCOL_MINOR 0
diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c
index 8ae65c9c020c..fb6aa7acf54b 100644
--- a/fs/ocfs2/refcounttree.c
+++ b/fs/ocfs2/refcounttree.c
@@ -626,7 +626,7 @@ static int ocfs2_create_refcount_tree(struct inode *inode,
rb = (struct ocfs2_refcount_block *)new_bh->b_data;
memset(rb, 0, inode->i_sb->s_blocksize);
strcpy((void *)rb, OCFS2_REFCOUNT_BLOCK_SIGNATURE);
- rb->rf_suballoc_slot = cpu_to_le16(osb->slot_num);
+ rb->rf_suballoc_slot = cpu_to_le16(meta_ac->ac_alloc_slot);
rb->rf_suballoc_bit = cpu_to_le16(suballoc_bit_start);
rb->rf_fs_generation = cpu_to_le32(osb->fs_generation);
rb->rf_blkno = cpu_to_le64(first_blkno);
@@ -1330,7 +1330,7 @@ static int ocfs2_expand_inline_ref_root(handle_t *handle,
memcpy(new_bh->b_data, ref_root_bh->b_data, sb->s_blocksize);
new_rb = (struct ocfs2_refcount_block *)new_bh->b_data;
- new_rb->rf_suballoc_slot = cpu_to_le16(OCFS2_SB(sb)->slot_num);
+ new_rb->rf_suballoc_slot = cpu_to_le16(meta_ac->ac_alloc_slot);
new_rb->rf_suballoc_bit = cpu_to_le16(suballoc_bit_start);
new_rb->rf_blkno = cpu_to_le64(blkno);
new_rb->rf_cpos = cpu_to_le32(0);
@@ -1576,7 +1576,7 @@ static int ocfs2_new_leaf_refcount_block(handle_t *handle,
new_rb = (struct ocfs2_refcount_block *)new_bh->b_data;
memset(new_rb, 0, sb->s_blocksize);
strcpy((void *)new_rb, OCFS2_REFCOUNT_BLOCK_SIGNATURE);
- new_rb->rf_suballoc_slot = cpu_to_le16(OCFS2_SB(sb)->slot_num);
+ new_rb->rf_suballoc_slot = cpu_to_le16(meta_ac->ac_alloc_slot);
new_rb->rf_suballoc_bit = cpu_to_le16(suballoc_bit_start);
new_rb->rf_fs_generation = cpu_to_le32(OCFS2_SB(sb)->fs_generation);
new_rb->rf_blkno = cpu_to_le64(blkno);
diff --git a/fs/ocfs2/stack_o2cb.c b/fs/ocfs2/stack_o2cb.c
index 3038c92af493..7020e1253ffa 100644
--- a/fs/ocfs2/stack_o2cb.c
+++ b/fs/ocfs2/stack_o2cb.c
@@ -161,24 +161,23 @@ static int dlm_status_to_errno(enum dlm_status status)
static void o2dlm_lock_ast_wrapper(void *astarg)
{
- BUG_ON(o2cb_stack.sp_proto == NULL);
+ struct ocfs2_dlm_lksb *lksb = astarg;
- o2cb_stack.sp_proto->lp_lock_ast(astarg);
+ lksb->lksb_conn->cc_proto->lp_lock_ast(lksb);
}
static void o2dlm_blocking_ast_wrapper(void *astarg, int level)
{
- BUG_ON(o2cb_stack.sp_proto == NULL);
+ struct ocfs2_dlm_lksb *lksb = astarg;
- o2cb_stack.sp_proto->lp_blocking_ast(astarg, level);
+ lksb->lksb_conn->cc_proto->lp_blocking_ast(lksb, level);
}
static void o2dlm_unlock_ast_wrapper(void *astarg, enum dlm_status status)
{
+ struct ocfs2_dlm_lksb *lksb = astarg;
int error = dlm_status_to_errno(status);
- BUG_ON(o2cb_stack.sp_proto == NULL);
-
/*
* In o2dlm, you can get both the lock_ast() for the lock being
* granted and the unlock_ast() for the CANCEL failing. A
@@ -193,16 +192,15 @@ static void o2dlm_unlock_ast_wrapper(void *astarg, enum dlm_status status)
if (status == DLM_CANCELGRANT)
return;
- o2cb_stack.sp_proto->lp_unlock_ast(astarg, error);
+ lksb->lksb_conn->cc_proto->lp_unlock_ast(lksb, error);
}
static int o2cb_dlm_lock(struct ocfs2_cluster_connection *conn,
int mode,
- union ocfs2_dlm_lksb *lksb,
+ struct ocfs2_dlm_lksb *lksb,
u32 flags,
void *name,
- unsigned int namelen,
- void *astarg)
+ unsigned int namelen)
{
enum dlm_status status;
int o2dlm_mode = mode_to_o2dlm(mode);
@@ -211,28 +209,27 @@ static int o2cb_dlm_lock(struct ocfs2_cluster_connection *conn,
status = dlmlock(conn->cc_lockspace, o2dlm_mode, &lksb->lksb_o2dlm,
o2dlm_flags, name, namelen,
- o2dlm_lock_ast_wrapper, astarg,
+ o2dlm_lock_ast_wrapper, lksb,
o2dlm_blocking_ast_wrapper);
ret = dlm_status_to_errno(status);
return ret;
}
static int o2cb_dlm_unlock(struct ocfs2_cluster_connection *conn,
- union ocfs2_dlm_lksb *lksb,
- u32 flags,
- void *astarg)
+ struct ocfs2_dlm_lksb *lksb,
+ u32 flags)
{
enum dlm_status status;
int o2dlm_flags = flags_to_o2dlm(flags);
int ret;
status = dlmunlock(conn->cc_lockspace, &lksb->lksb_o2dlm,
- o2dlm_flags, o2dlm_unlock_ast_wrapper, astarg);
+ o2dlm_flags, o2dlm_unlock_ast_wrapper, lksb);
ret = dlm_status_to_errno(status);
return ret;
}
-static int o2cb_dlm_lock_status(union ocfs2_dlm_lksb *lksb)
+static int o2cb_dlm_lock_status(struct ocfs2_dlm_lksb *lksb)
{
return dlm_status_to_errno(lksb->lksb_o2dlm.status);
}
@@ -242,17 +239,17 @@ static int o2cb_dlm_lock_status(union ocfs2_dlm_lksb *lksb)
* contents, it will zero out the LVB. Thus the caller can always trust
* the contents.
*/
-static int o2cb_dlm_lvb_valid(union ocfs2_dlm_lksb *lksb)
+static int o2cb_dlm_lvb_valid(struct ocfs2_dlm_lksb *lksb)
{
return 1;
}
-static void *o2cb_dlm_lvb(union ocfs2_dlm_lksb *lksb)
+static void *o2cb_dlm_lvb(struct ocfs2_dlm_lksb *lksb)
{
return (void *)(lksb->lksb_o2dlm.lvb);
}
-static void o2cb_dump_lksb(union ocfs2_dlm_lksb *lksb)
+static void o2cb_dump_lksb(struct ocfs2_dlm_lksb *lksb)
{
dlm_print_one_lock(lksb->lksb_o2dlm.lockid);
}
@@ -280,7 +277,7 @@ static int o2cb_cluster_connect(struct ocfs2_cluster_connection *conn)
struct dlm_protocol_version fs_version;
BUG_ON(conn == NULL);
- BUG_ON(o2cb_stack.sp_proto == NULL);
+ BUG_ON(conn->cc_proto == NULL);
/* for now we only have one cluster/node, make sure we see it
* in the heartbeat universe */
diff --git a/fs/ocfs2/stack_user.c b/fs/ocfs2/stack_user.c
index da78a2a334fd..5ae8812b2864 100644
--- a/fs/ocfs2/stack_user.c
+++ b/fs/ocfs2/stack_user.c
@@ -25,7 +25,6 @@
#include <linux/reboot.h>
#include <asm/uaccess.h>
-#include "ocfs2.h" /* For struct ocfs2_lock_res */
#include "stackglue.h"
#include <linux/dlm_plock.h>
@@ -63,8 +62,8 @@
* negotiated by the client. The client negotiates based on the maximum
* version advertised in /sys/fs/ocfs2/max_locking_protocol. The major
* number from the "SETV" message must match
- * ocfs2_user_plugin.sp_proto->lp_max_version.pv_major, and the minor number
- * must be less than or equal to ...->lp_max_version.pv_minor.
+ * ocfs2_user_plugin.sp_max_proto.pv_major, and the minor number
+ * must be less than or equal to ...sp_max_version.pv_minor.
*
* Once this information has been set, mounts will be allowed. From this
* point on, the "DOWN" message can be sent for node down notification.
@@ -401,7 +400,7 @@ static int ocfs2_control_do_setversion_msg(struct file *file,
char *ptr = NULL;
struct ocfs2_control_private *p = file->private_data;
struct ocfs2_protocol_version *max =
- &ocfs2_user_plugin.sp_proto->lp_max_version;
+ &ocfs2_user_plugin.sp_max_proto;
if (ocfs2_control_get_handshake_state(file) !=
OCFS2_CONTROL_HANDSHAKE_PROTOCOL)
@@ -664,18 +663,10 @@ static void ocfs2_control_exit(void)
-rc);
}
-static struct dlm_lksb *fsdlm_astarg_to_lksb(void *astarg)
-{
- struct ocfs2_lock_res *res = astarg;
- return &res->l_lksb.lksb_fsdlm;
-}
-
static void fsdlm_lock_ast_wrapper(void *astarg)
{
- struct dlm_lksb *lksb = fsdlm_astarg_to_lksb(astarg);
- int status = lksb->sb_status;
-
- BUG_ON(ocfs2_user_plugin.sp_proto == NULL);
+ struct ocfs2_dlm_lksb *lksb = astarg;
+ int status = lksb->lksb_fsdlm.sb_status;
/*
* For now we're punting on the issue of other non-standard errors
@@ -688,25 +679,24 @@ static void fsdlm_lock_ast_wrapper(void *astarg)
*/
if (status == -DLM_EUNLOCK || status == -DLM_ECANCEL)
- ocfs2_user_plugin.sp_proto->lp_unlock_ast(astarg, 0);
+ lksb->lksb_conn->cc_proto->lp_unlock_ast(lksb, 0);
else
- ocfs2_user_plugin.sp_proto->lp_lock_ast(astarg);
+ lksb->lksb_conn->cc_proto->lp_lock_ast(lksb);
}
static void fsdlm_blocking_ast_wrapper(void *astarg, int level)
{
- BUG_ON(ocfs2_user_plugin.sp_proto == NULL);
+ struct ocfs2_dlm_lksb *lksb = astarg;
- ocfs2_user_plugin.sp_proto->lp_blocking_ast(astarg, level);
+ lksb->lksb_conn->cc_proto->lp_blocking_ast(lksb, level);
}
static int user_dlm_lock(struct ocfs2_cluster_connection *conn,
int mode,
- union ocfs2_dlm_lksb *lksb,
+ struct ocfs2_dlm_lksb *lksb,
u32 flags,
void *name,
- unsigned int namelen,
- void *astarg)
+ unsigned int namelen)
{
int ret;
@@ -716,36 +706,35 @@ static int user_dlm_lock(struct ocfs2_cluster_connection *conn,
ret = dlm_lock(conn->cc_lockspace, mode, &lksb->lksb_fsdlm,
flags|DLM_LKF_NODLCKWT, name, namelen, 0,
- fsdlm_lock_ast_wrapper, astarg,
+ fsdlm_lock_ast_wrapper, lksb,
fsdlm_blocking_ast_wrapper);
return ret;
}
static int user_dlm_unlock(struct ocfs2_cluster_connection *conn,
- union ocfs2_dlm_lksb *lksb,
- u32 flags,
- void *astarg)
+ struct ocfs2_dlm_lksb *lksb,
+ u32 flags)
{
int ret;
ret = dlm_unlock(conn->cc_lockspace, lksb->lksb_fsdlm.sb_lkid,
- flags, &lksb->lksb_fsdlm, astarg);
+ flags, &lksb->lksb_fsdlm, lksb);
return ret;
}
-static int user_dlm_lock_status(union ocfs2_dlm_lksb *lksb)
+static int user_dlm_lock_status(struct ocfs2_dlm_lksb *lksb)
{
return lksb->lksb_fsdlm.sb_status;
}
-static int user_dlm_lvb_valid(union ocfs2_dlm_lksb *lksb)
+static int user_dlm_lvb_valid(struct ocfs2_dlm_lksb *lksb)
{
int invalid = lksb->lksb_fsdlm.sb_flags & DLM_SBF_VALNOTVALID;
return !invalid;
}
-static void *user_dlm_lvb(union ocfs2_dlm_lksb *lksb)
+static void *user_dlm_lvb(struct ocfs2_dlm_lksb *lksb)
{
if (!lksb->lksb_fsdlm.sb_lvbptr)
lksb->lksb_fsdlm.sb_lvbptr = (char *)lksb +
@@ -753,7 +742,7 @@ static void *user_dlm_lvb(union ocfs2_dlm_lksb *lksb)
return (void *)(lksb->lksb_fsdlm.sb_lvbptr);
}
-static void user_dlm_dump_lksb(union ocfs2_dlm_lksb *lksb)
+static void user_dlm_dump_lksb(struct ocfs2_dlm_lksb *lksb)
{
}
diff --git a/fs/ocfs2/stackglue.c b/fs/ocfs2/stackglue.c
index f3df0baa9a48..39abf89697ed 100644
--- a/fs/ocfs2/stackglue.c
+++ b/fs/ocfs2/stackglue.c
@@ -36,7 +36,7 @@
#define OCFS2_STACK_PLUGIN_USER "user"
#define OCFS2_MAX_HB_CTL_PATH 256
-static struct ocfs2_locking_protocol *lproto;
+static struct ocfs2_protocol_version locking_max_version;
static DEFINE_SPINLOCK(ocfs2_stack_lock);
static LIST_HEAD(ocfs2_stack_list);
static char cluster_stack_name[OCFS2_STACK_LABEL_LEN + 1];
@@ -176,7 +176,7 @@ int ocfs2_stack_glue_register(struct ocfs2_stack_plugin *plugin)
spin_lock(&ocfs2_stack_lock);
if (!ocfs2_stack_lookup(plugin->sp_name)) {
plugin->sp_count = 0;
- plugin->sp_proto = lproto;
+ plugin->sp_max_proto = locking_max_version;
list_add(&plugin->sp_list, &ocfs2_stack_list);
printk(KERN_INFO "ocfs2: Registered cluster interface %s\n",
plugin->sp_name);
@@ -213,77 +213,76 @@ void ocfs2_stack_glue_unregister(struct ocfs2_stack_plugin *plugin)
}
EXPORT_SYMBOL_GPL(ocfs2_stack_glue_unregister);
-void ocfs2_stack_glue_set_locking_protocol(struct ocfs2_locking_protocol *proto)
+void ocfs2_stack_glue_set_max_proto_version(struct ocfs2_protocol_version *max_proto)
{
struct ocfs2_stack_plugin *p;
- BUG_ON(proto == NULL);
-
spin_lock(&ocfs2_stack_lock);
- BUG_ON(active_stack != NULL);
+ if (memcmp(max_proto, &locking_max_version,
+ sizeof(struct ocfs2_protocol_version))) {
+ BUG_ON(locking_max_version.pv_major != 0);
- lproto = proto;
- list_for_each_entry(p, &ocfs2_stack_list, sp_list) {
- p->sp_proto = lproto;
+ locking_max_version = *max_proto;
+ list_for_each_entry(p, &ocfs2_stack_list, sp_list) {
+ p->sp_max_proto = locking_max_version;
+ }
}
-
spin_unlock(&ocfs2_stack_lock);
}
-EXPORT_SYMBOL_GPL(ocfs2_stack_glue_set_locking_protocol);
+EXPORT_SYMBOL_GPL(ocfs2_stack_glue_set_max_proto_version);
/*
- * The ocfs2_dlm_lock() and ocfs2_dlm_unlock() functions take
- * "struct ocfs2_lock_res *astarg" instead of "void *astarg" because the
- * underlying stack plugins need to pilfer the lksb off of the lock_res.
- * If some other structure needs to be passed as an astarg, the plugins
- * will need to be given a different avenue to the lksb.
+ * The ocfs2_dlm_lock() and ocfs2_dlm_unlock() functions take no argument
+ * for the ast and bast functions. They will pass the lksb to the ast
+ * and bast. The caller can wrap the lksb with their own structure to
+ * get more information.
*/
int ocfs2_dlm_lock(struct ocfs2_cluster_connection *conn,
int mode,
- union ocfs2_dlm_lksb *lksb,
+ struct ocfs2_dlm_lksb *lksb,
u32 flags,
void *name,
- unsigned int namelen,
- struct ocfs2_lock_res *astarg)
+ unsigned int namelen)
{
- BUG_ON(lproto == NULL);
-
+ if (!lksb->lksb_conn)
+ lksb->lksb_conn = conn;
+ else
+ BUG_ON(lksb->lksb_conn != conn);
return active_stack->sp_ops->dlm_lock(conn, mode, lksb, flags,
- name, namelen, astarg);
+ name, namelen);
}
EXPORT_SYMBOL_GPL(ocfs2_dlm_lock);
int ocfs2_dlm_unlock(struct ocfs2_cluster_connection *conn,
- union ocfs2_dlm_lksb *lksb,
- u32 flags,
- struct ocfs2_lock_res *astarg)
+ struct ocfs2_dlm_lksb *lksb,
+ u32 flags)
{
- BUG_ON(lproto == NULL);
+ BUG_ON(lksb->lksb_conn == NULL);
- return active_stack->sp_ops->dlm_unlock(conn, lksb, flags, astarg);
+ return active_stack->sp_ops->dlm_unlock(conn, lksb, flags);
}
EXPORT_SYMBOL_GPL(ocfs2_dlm_unlock);
-int ocfs2_dlm_lock_status(union ocfs2_dlm_lksb *lksb)
+int ocfs2_dlm_lock_status(struct ocfs2_dlm_lksb *lksb)
{
return active_stack->sp_ops->lock_status(lksb);
}
EXPORT_SYMBOL_GPL(ocfs2_dlm_lock_status);
-int ocfs2_dlm_lvb_valid(union ocfs2_dlm_lksb *lksb)
+int ocfs2_dlm_lvb_valid(struct ocfs2_dlm_lksb *lksb)
{
return active_stack->sp_ops->lvb_valid(lksb);
}
EXPORT_SYMBOL_GPL(ocfs2_dlm_lvb_valid);
-void *ocfs2_dlm_lvb(union ocfs2_dlm_lksb *lksb)
+void *ocfs2_dlm_lvb(struct ocfs2_dlm_lksb *lksb)
{
return active_stack->sp_ops->lock_lvb(lksb);
}
EXPORT_SYMBOL_GPL(ocfs2_dlm_lvb);
-void ocfs2_dlm_dump_lksb(union ocfs2_dlm_lksb *lksb)
+void ocfs2_dlm_dump_lksb(struct ocfs2_dlm_lksb *lksb)
{
active_stack->sp_ops->dump_lksb(lksb);
}
@@ -312,6 +311,7 @@ EXPORT_SYMBOL_GPL(ocfs2_plock);
int ocfs2_cluster_connect(const char *stack_name,
const char *group,
int grouplen,
+ struct ocfs2_locking_protocol *lproto,
void (*recovery_handler)(int node_num,
void *recovery_data),
void *recovery_data,
@@ -329,6 +329,12 @@ int ocfs2_cluster_connect(const char *stack_name,
goto out;
}
+ if (memcmp(&lproto->lp_max_version, &locking_max_version,
+ sizeof(struct ocfs2_protocol_version))) {
+ rc = -EINVAL;
+ goto out;
+ }
+
new_conn = kzalloc(sizeof(struct ocfs2_cluster_connection),
GFP_KERNEL);
if (!new_conn) {
@@ -341,6 +347,7 @@ int ocfs2_cluster_connect(const char *stack_name,
new_conn->cc_recovery_handler = recovery_handler;
new_conn->cc_recovery_data = recovery_data;
+ new_conn->cc_proto = lproto;
/* Start the new connection at our maximum compatibility level */
new_conn->cc_version = lproto->lp_max_version;
@@ -366,6 +373,24 @@ out:
}
EXPORT_SYMBOL_GPL(ocfs2_cluster_connect);
+/* The caller will ensure all nodes have the same cluster stack */
+int ocfs2_cluster_connect_agnostic(const char *group,
+ int grouplen,
+ struct ocfs2_locking_protocol *lproto,
+ void (*recovery_handler)(int node_num,
+ void *recovery_data),
+ void *recovery_data,
+ struct ocfs2_cluster_connection **conn)
+{
+ char *stack_name = NULL;
+
+ if (cluster_stack_name[0])
+ stack_name = cluster_stack_name;
+ return ocfs2_cluster_connect(stack_name, group, grouplen, lproto,
+ recovery_handler, recovery_data, conn);
+}
+EXPORT_SYMBOL_GPL(ocfs2_cluster_connect_agnostic);
+
/* If hangup_pending is 0, the stack driver will be dropped */
int ocfs2_cluster_disconnect(struct ocfs2_cluster_connection *conn,
int hangup_pending)
@@ -453,10 +478,10 @@ static ssize_t ocfs2_max_locking_protocol_show(struct kobject *kobj,
ssize_t ret = 0;
spin_lock(&ocfs2_stack_lock);
- if (lproto)
+ if (locking_max_version.pv_major)
ret = snprintf(buf, PAGE_SIZE, "%u.%u\n",
- lproto->lp_max_version.pv_major,
- lproto->lp_max_version.pv_minor);
+ locking_max_version.pv_major,
+ locking_max_version.pv_minor);
spin_unlock(&ocfs2_stack_lock);
return ret;
@@ -685,7 +710,10 @@ static int __init ocfs2_stack_glue_init(void)
static void __exit ocfs2_stack_glue_exit(void)
{
- lproto = NULL;
+ memset(&locking_max_version, 0,
+ sizeof(struct ocfs2_protocol_version));
+ locking_max_version.pv_major = 0;
+ locking_max_version.pv_minor = 0;
ocfs2_sysfs_exit();
if (ocfs2_table_header)
unregister_sysctl_table(ocfs2_table_header);
diff --git a/fs/ocfs2/stackglue.h b/fs/ocfs2/stackglue.h
index 03a44d60eac9..8ce7398ae1d2 100644
--- a/fs/ocfs2/stackglue.h
+++ b/fs/ocfs2/stackglue.h
@@ -56,17 +56,6 @@ struct ocfs2_protocol_version {
};
/*
- * The ocfs2_locking_protocol defines the handlers called on ocfs2's behalf.
- */
-struct ocfs2_locking_protocol {
- struct ocfs2_protocol_version lp_max_version;
- void (*lp_lock_ast)(void *astarg);
- void (*lp_blocking_ast)(void *astarg, int level);
- void (*lp_unlock_ast)(void *astarg, int error);
-};
-
-
-/*
* The dlm_lockstatus struct includes lvb space, but the dlm_lksb struct only
* has a pointer to separately allocated lvb space. This struct exists only to
* include in the lksb union to make space for a combined dlm_lksb and lvb.
@@ -81,12 +70,27 @@ struct fsdlm_lksb_plus_lvb {
* size of the union is known. Lock status structures are embedded in
* ocfs2 inodes.
*/
-union ocfs2_dlm_lksb {
- struct dlm_lockstatus lksb_o2dlm;
- struct dlm_lksb lksb_fsdlm;
- struct fsdlm_lksb_plus_lvb padding;
+struct ocfs2_cluster_connection;
+struct ocfs2_dlm_lksb {
+ union {
+ struct dlm_lockstatus lksb_o2dlm;
+ struct dlm_lksb lksb_fsdlm;
+ struct fsdlm_lksb_plus_lvb padding;
+ };
+ struct ocfs2_cluster_connection *lksb_conn;
+};
+
+/*
+ * The ocfs2_locking_protocol defines the handlers called on ocfs2's behalf.
+ */
+struct ocfs2_locking_protocol {
+ struct ocfs2_protocol_version lp_max_version;
+ void (*lp_lock_ast)(struct ocfs2_dlm_lksb *lksb);
+ void (*lp_blocking_ast)(struct ocfs2_dlm_lksb *lksb, int level);
+ void (*lp_unlock_ast)(struct ocfs2_dlm_lksb *lksb, int error);
};
+
/*
* A cluster connection. Mostly opaque to ocfs2, the connection holds
* state for the underlying stack. ocfs2 does use cc_version to determine
@@ -96,6 +100,7 @@ struct ocfs2_cluster_connection {
char cc_name[GROUP_NAME_MAX];
int cc_namelen;
struct ocfs2_protocol_version cc_version;
+ struct ocfs2_locking_protocol *cc_proto;
void (*cc_recovery_handler)(int node_num, void *recovery_data);
void *cc_recovery_data;
void *cc_lockspace;
@@ -155,27 +160,29 @@ struct ocfs2_stack_operations {
*
* ast and bast functions are not part of the call because the
* stack will likely want to wrap ast and bast calls before passing
- * them to stack->sp_proto.
+ * them to stack->sp_proto. There is no astarg. The lksb will
+ * be passed back to the ast and bast functions. The caller can
+ * use this to find their object.
*/
int (*dlm_lock)(struct ocfs2_cluster_connection *conn,
int mode,
- union ocfs2_dlm_lksb *lksb,
+ struct ocfs2_dlm_lksb *lksb,
u32 flags,
void *name,
- unsigned int namelen,
- void *astarg);
+ unsigned int namelen);
/*
* Call the underlying dlm unlock function. The ->dlm_unlock()
* function should convert the flags as appropriate.
*
* The unlock ast is not passed, as the stack will want to wrap
- * it before calling stack->sp_proto->lp_unlock_ast().
+ * it before calling stack->sp_proto->lp_unlock_ast(). There is
+ * no astarg. The lksb will be passed back to the unlock ast
+ * function. The caller can use this to find their object.
*/
int (*dlm_unlock)(struct ocfs2_cluster_connection *conn,
- union ocfs2_dlm_lksb *lksb,
- u32 flags,
- void *astarg);
+ struct ocfs2_dlm_lksb *lksb,
+ u32 flags);
/*
* Return the status of the current lock status block. The fs
@@ -183,17 +190,17 @@ struct ocfs2_stack_operations {
* callback pulls out the stack-specific lksb, converts the status
* to a proper errno, and returns it.
*/
- int (*lock_status)(union ocfs2_dlm_lksb *lksb);
+ int (*lock_status)(struct ocfs2_dlm_lksb *lksb);
/*
* Return non-zero if the LVB is valid.
*/
- int (*lvb_valid)(union ocfs2_dlm_lksb *lksb);
+ int (*lvb_valid)(struct ocfs2_dlm_lksb *lksb);
/*
* Pull the lvb pointer off of the stack-specific lksb.
*/
- void *(*lock_lvb)(union ocfs2_dlm_lksb *lksb);
+ void *(*lock_lvb)(struct ocfs2_dlm_lksb *lksb);
/*
* Cluster-aware posix locks
@@ -210,7 +217,7 @@ struct ocfs2_stack_operations {
* This is an optoinal debugging hook. If provided, the
* stack can dump debugging information about this lock.
*/
- void (*dump_lksb)(union ocfs2_dlm_lksb *lksb);
+ void (*dump_lksb)(struct ocfs2_dlm_lksb *lksb);
};
/*
@@ -226,7 +233,7 @@ struct ocfs2_stack_plugin {
/* These are managed by the stackglue code. */
struct list_head sp_list;
unsigned int sp_count;
- struct ocfs2_locking_protocol *sp_proto;
+ struct ocfs2_protocol_version sp_max_proto;
};
@@ -234,10 +241,22 @@ struct ocfs2_stack_plugin {
int ocfs2_cluster_connect(const char *stack_name,
const char *group,
int grouplen,
+ struct ocfs2_locking_protocol *lproto,
void (*recovery_handler)(int node_num,
void *recovery_data),
void *recovery_data,
struct ocfs2_cluster_connection **conn);
+/*
+ * Used by callers that don't store their stack name. They must ensure
+ * all nodes have the same stack.
+ */
+int ocfs2_cluster_connect_agnostic(const char *group,
+ int grouplen,
+ struct ocfs2_locking_protocol *lproto,
+ void (*recovery_handler)(int node_num,
+ void *recovery_data),
+ void *recovery_data,
+ struct ocfs2_cluster_connection **conn);
int ocfs2_cluster_disconnect(struct ocfs2_cluster_connection *conn,
int hangup_pending);
void ocfs2_cluster_hangup(const char *group, int grouplen);
@@ -246,26 +265,24 @@ int ocfs2_cluster_this_node(unsigned int *node);
struct ocfs2_lock_res;
int ocfs2_dlm_lock(struct ocfs2_cluster_connection *conn,
int mode,
- union ocfs2_dlm_lksb *lksb,
+ struct ocfs2_dlm_lksb *lksb,
u32 flags,
void *name,
- unsigned int namelen,
- struct ocfs2_lock_res *astarg);
+ unsigned int namelen);
int ocfs2_dlm_unlock(struct ocfs2_cluster_connection *conn,
- union ocfs2_dlm_lksb *lksb,
- u32 flags,
- struct ocfs2_lock_res *astarg);
+ struct ocfs2_dlm_lksb *lksb,
+ u32 flags);
-int ocfs2_dlm_lock_status(union ocfs2_dlm_lksb *lksb);
-int ocfs2_dlm_lvb_valid(union ocfs2_dlm_lksb *lksb);
-void *ocfs2_dlm_lvb(union ocfs2_dlm_lksb *lksb);
-void ocfs2_dlm_dump_lksb(union ocfs2_dlm_lksb *lksb);
+int ocfs2_dlm_lock_status(struct ocfs2_dlm_lksb *lksb);
+int ocfs2_dlm_lvb_valid(struct ocfs2_dlm_lksb *lksb);
+void *ocfs2_dlm_lvb(struct ocfs2_dlm_lksb *lksb);
+void ocfs2_dlm_dump_lksb(struct ocfs2_dlm_lksb *lksb);
int ocfs2_stack_supports_plocks(void);
int ocfs2_plock(struct ocfs2_cluster_connection *conn, u64 ino,
struct file *file, int cmd, struct file_lock *fl);
-void ocfs2_stack_glue_set_locking_protocol(struct ocfs2_locking_protocol *proto);
+void ocfs2_stack_glue_set_max_proto_version(struct ocfs2_protocol_version *max_proto);
/* Used by stack plugins */
diff --git a/fs/ocfs2/suballoc.c b/fs/ocfs2/suballoc.c
index c30b644d9572..c3c60bc3e072 100644
--- a/fs/ocfs2/suballoc.c
+++ b/fs/ocfs2/suballoc.c
@@ -51,7 +51,7 @@
#define ALLOC_NEW_GROUP 0x1
#define ALLOC_GROUPS_FROM_GLOBAL 0x2
-#define OCFS2_MAX_INODES_TO_STEAL 1024
+#define OCFS2_MAX_TO_STEAL 1024
static inline void ocfs2_debug_bg(struct ocfs2_group_desc *bg);
static inline void ocfs2_debug_suballoc_inode(struct ocfs2_dinode *fe);
@@ -637,12 +637,113 @@ bail:
return status;
}
+static void ocfs2_init_inode_steal_slot(struct ocfs2_super *osb)
+{
+ spin_lock(&osb->osb_lock);
+ osb->s_inode_steal_slot = OCFS2_INVALID_SLOT;
+ spin_unlock(&osb->osb_lock);
+ atomic_set(&osb->s_num_inodes_stolen, 0);
+}
+
+static void ocfs2_init_meta_steal_slot(struct ocfs2_super *osb)
+{
+ spin_lock(&osb->osb_lock);
+ osb->s_meta_steal_slot = OCFS2_INVALID_SLOT;
+ spin_unlock(&osb->osb_lock);
+ atomic_set(&osb->s_num_meta_stolen, 0);
+}
+
+void ocfs2_init_steal_slots(struct ocfs2_super *osb)
+{
+ ocfs2_init_inode_steal_slot(osb);
+ ocfs2_init_meta_steal_slot(osb);
+}
+
+static void __ocfs2_set_steal_slot(struct ocfs2_super *osb, int slot, int type)
+{
+ spin_lock(&osb->osb_lock);
+ if (type == INODE_ALLOC_SYSTEM_INODE)
+ osb->s_inode_steal_slot = slot;
+ else if (type == EXTENT_ALLOC_SYSTEM_INODE)
+ osb->s_meta_steal_slot = slot;
+ spin_unlock(&osb->osb_lock);
+}
+
+static int __ocfs2_get_steal_slot(struct ocfs2_super *osb, int type)
+{
+ int slot = OCFS2_INVALID_SLOT;
+
+ spin_lock(&osb->osb_lock);
+ if (type == INODE_ALLOC_SYSTEM_INODE)
+ slot = osb->s_inode_steal_slot;
+ else if (type == EXTENT_ALLOC_SYSTEM_INODE)
+ slot = osb->s_meta_steal_slot;
+ spin_unlock(&osb->osb_lock);
+
+ return slot;
+}
+
+static int ocfs2_get_inode_steal_slot(struct ocfs2_super *osb)
+{
+ return __ocfs2_get_steal_slot(osb, INODE_ALLOC_SYSTEM_INODE);
+}
+
+static int ocfs2_get_meta_steal_slot(struct ocfs2_super *osb)
+{
+ return __ocfs2_get_steal_slot(osb, EXTENT_ALLOC_SYSTEM_INODE);
+}
+
+static int ocfs2_steal_resource(struct ocfs2_super *osb,
+ struct ocfs2_alloc_context *ac,
+ int type)
+{
+ int i, status = -ENOSPC;
+ int slot = __ocfs2_get_steal_slot(osb, type);
+
+ /* Start to steal resource from the first slot after ours. */
+ if (slot == OCFS2_INVALID_SLOT)
+ slot = osb->slot_num + 1;
+
+ for (i = 0; i < osb->max_slots; i++, slot++) {
+ if (slot == osb->max_slots)
+ slot = 0;
+
+ if (slot == osb->slot_num)
+ continue;
+
+ status = ocfs2_reserve_suballoc_bits(osb, ac,
+ type,
+ (u32)slot, NULL,
+ NOT_ALLOC_NEW_GROUP);
+ if (status >= 0) {
+ __ocfs2_set_steal_slot(osb, slot, type);
+ break;
+ }
+
+ ocfs2_free_ac_resource(ac);
+ }
+
+ return status;
+}
+
+static int ocfs2_steal_inode(struct ocfs2_super *osb,
+ struct ocfs2_alloc_context *ac)
+{
+ return ocfs2_steal_resource(osb, ac, INODE_ALLOC_SYSTEM_INODE);
+}
+
+static int ocfs2_steal_meta(struct ocfs2_super *osb,
+ struct ocfs2_alloc_context *ac)
+{
+ return ocfs2_steal_resource(osb, ac, EXTENT_ALLOC_SYSTEM_INODE);
+}
+
int ocfs2_reserve_new_metadata_blocks(struct ocfs2_super *osb,
int blocks,
struct ocfs2_alloc_context **ac)
{
int status;
- u32 slot;
+ int slot = ocfs2_get_meta_steal_slot(osb);
*ac = kzalloc(sizeof(struct ocfs2_alloc_context), GFP_KERNEL);
if (!(*ac)) {
@@ -653,12 +754,34 @@ int ocfs2_reserve_new_metadata_blocks(struct ocfs2_super *osb,
(*ac)->ac_bits_wanted = blocks;
(*ac)->ac_which = OCFS2_AC_USE_META;
- slot = osb->slot_num;
(*ac)->ac_group_search = ocfs2_block_group_search;
+ if (slot != OCFS2_INVALID_SLOT &&
+ atomic_read(&osb->s_num_meta_stolen) < OCFS2_MAX_TO_STEAL)
+ goto extent_steal;
+
+ atomic_set(&osb->s_num_meta_stolen, 0);
status = ocfs2_reserve_suballoc_bits(osb, (*ac),
EXTENT_ALLOC_SYSTEM_INODE,
- slot, NULL, ALLOC_NEW_GROUP);
+ (u32)osb->slot_num, NULL,
+ ALLOC_NEW_GROUP);
+
+
+ if (status >= 0) {
+ status = 0;
+ if (slot != OCFS2_INVALID_SLOT)
+ ocfs2_init_meta_steal_slot(osb);
+ goto bail;
+ } else if (status < 0 && status != -ENOSPC) {
+ mlog_errno(status);
+ goto bail;
+ }
+
+ ocfs2_free_ac_resource(*ac);
+
+extent_steal:
+ status = ocfs2_steal_meta(osb, *ac);
+ atomic_inc(&osb->s_num_meta_stolen);
if (status < 0) {
if (status != -ENOSPC)
mlog_errno(status);
@@ -685,43 +808,11 @@ int ocfs2_reserve_new_metadata(struct ocfs2_super *osb,
ac);
}
-static int ocfs2_steal_inode_from_other_nodes(struct ocfs2_super *osb,
- struct ocfs2_alloc_context *ac)
-{
- int i, status = -ENOSPC;
- s16 slot = ocfs2_get_inode_steal_slot(osb);
-
- /* Start to steal inodes from the first slot after ours. */
- if (slot == OCFS2_INVALID_SLOT)
- slot = osb->slot_num + 1;
-
- for (i = 0; i < osb->max_slots; i++, slot++) {
- if (slot == osb->max_slots)
- slot = 0;
-
- if (slot == osb->slot_num)
- continue;
-
- status = ocfs2_reserve_suballoc_bits(osb, ac,
- INODE_ALLOC_SYSTEM_INODE,
- slot, NULL,
- NOT_ALLOC_NEW_GROUP);
- if (status >= 0) {
- ocfs2_set_inode_steal_slot(osb, slot);
- break;
- }
-
- ocfs2_free_ac_resource(ac);
- }
-
- return status;
-}
-
int ocfs2_reserve_new_inode(struct ocfs2_super *osb,
struct ocfs2_alloc_context **ac)
{
int status;
- s16 slot = ocfs2_get_inode_steal_slot(osb);
+ int slot = ocfs2_get_inode_steal_slot(osb);
u64 alloc_group;
*ac = kzalloc(sizeof(struct ocfs2_alloc_context), GFP_KERNEL);
@@ -754,14 +845,14 @@ int ocfs2_reserve_new_inode(struct ocfs2_super *osb,
* need to check our slots to see whether there is some space for us.
*/
if (slot != OCFS2_INVALID_SLOT &&
- atomic_read(&osb->s_num_inodes_stolen) < OCFS2_MAX_INODES_TO_STEAL)
+ atomic_read(&osb->s_num_inodes_stolen) < OCFS2_MAX_TO_STEAL)
goto inode_steal;
atomic_set(&osb->s_num_inodes_stolen, 0);
alloc_group = osb->osb_inode_alloc_group;
status = ocfs2_reserve_suballoc_bits(osb, *ac,
INODE_ALLOC_SYSTEM_INODE,
- osb->slot_num,
+ (u32)osb->slot_num,
&alloc_group,
ALLOC_NEW_GROUP |
ALLOC_GROUPS_FROM_GLOBAL);
@@ -789,7 +880,7 @@ int ocfs2_reserve_new_inode(struct ocfs2_super *osb,
ocfs2_free_ac_resource(*ac);
inode_steal:
- status = ocfs2_steal_inode_from_other_nodes(osb, *ac);
+ status = ocfs2_steal_inode(osb, *ac);
atomic_inc(&osb->s_num_inodes_stolen);
if (status < 0) {
if (status != -ENOSPC)
diff --git a/fs/ocfs2/suballoc.h b/fs/ocfs2/suballoc.h
index 8c9a78a43164..fa60723c43e8 100644
--- a/fs/ocfs2/suballoc.h
+++ b/fs/ocfs2/suballoc.h
@@ -56,6 +56,7 @@ struct ocfs2_alloc_context {
is the same as ~0 - unlimited */
};
+void ocfs2_init_steal_slots(struct ocfs2_super *osb);
void ocfs2_free_alloc_context(struct ocfs2_alloc_context *ac);
static inline int ocfs2_alloc_context_bits_left(struct ocfs2_alloc_context *ac)
{
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 755cd49a5ef3..dee03197a494 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -69,6 +69,7 @@
#include "xattr.h"
#include "quota.h"
#include "refcounttree.h"
+#include "suballoc.h"
#include "buffer_head_io.h"
@@ -301,9 +302,12 @@ static int ocfs2_osb_dump(struct ocfs2_super *osb, char *buf, int len)
spin_lock(&osb->osb_lock);
out += snprintf(buf + out, len - out,
- "%10s => Slot: %d NumStolen: %d\n", "Steal",
+ "%10s => InodeSlot: %d StolenInodes: %d, "
+ "MetaSlot: %d StolenMeta: %d\n", "Steal",
osb->s_inode_steal_slot,
- atomic_read(&osb->s_num_inodes_stolen));
+ atomic_read(&osb->s_num_inodes_stolen),
+ osb->s_meta_steal_slot,
+ atomic_read(&osb->s_num_meta_stolen));
spin_unlock(&osb->osb_lock);
out += snprintf(buf + out, len - out, "OrphanScan => ");
@@ -1997,7 +2001,7 @@ static int ocfs2_initialize_super(struct super_block *sb,
osb->blocked_lock_count = 0;
spin_lock_init(&osb->osb_lock);
spin_lock_init(&osb->osb_xattr_lock);
- ocfs2_init_inode_steal_slot(osb);
+ ocfs2_init_steal_slots(osb);
atomic_set(&osb->alloc_stats.moves, 0);
atomic_set(&osb->alloc_stats.local_data, 0);
diff --git a/fs/ocfs2/xattr.c b/fs/ocfs2/xattr.c
index 8fc6fb071c6d..d1b0d386f6d1 100644
--- a/fs/ocfs2/xattr.c
+++ b/fs/ocfs2/xattr.c
@@ -116,10 +116,11 @@ static struct xattr_handler *ocfs2_xattr_handler_map[OCFS2_XATTR_MAX] = {
};
struct ocfs2_xattr_info {
- int name_index;
- const char *name;
- const void *value;
- size_t value_len;
+ int xi_name_index;
+ const char *xi_name;
+ int xi_name_len;
+ const void *xi_value;
+ size_t xi_value_len;
};
struct ocfs2_xattr_search {
@@ -137,6 +138,115 @@ struct ocfs2_xattr_search {
int not_found;
};
+/* Operations on struct ocfs2_xa_entry */
+struct ocfs2_xa_loc;
+struct ocfs2_xa_loc_operations {
+ /*
+ * Journal functions
+ */
+ int (*xlo_journal_access)(handle_t *handle, struct ocfs2_xa_loc *loc,
+ int type);
+ void (*xlo_journal_dirty)(handle_t *handle, struct ocfs2_xa_loc *loc);
+
+ /*
+ * Return a pointer to the appropriate buffer in loc->xl_storage
+ * at the given offset from loc->xl_header.
+ */
+ void *(*xlo_offset_pointer)(struct ocfs2_xa_loc *loc, int offset);
+
+ /* Can we reuse the existing entry for the new value? */
+ int (*xlo_can_reuse)(struct ocfs2_xa_loc *loc,
+ struct ocfs2_xattr_info *xi);
+
+ /* How much space is needed for the new value? */
+ int (*xlo_check_space)(struct ocfs2_xa_loc *loc,
+ struct ocfs2_xattr_info *xi);
+
+ /*
+ * Return the offset of the first name+value pair. This is
+ * the start of our downward-filling free space.
+ */
+ int (*xlo_get_free_start)(struct ocfs2_xa_loc *loc);
+
+ /*
+ * Remove the name+value at this location. Do whatever is
+ * appropriate with the remaining name+value pairs.
+ */
+ void (*xlo_wipe_namevalue)(struct ocfs2_xa_loc *loc);
+
+ /* Fill xl_entry with a new entry */
+ void (*xlo_add_entry)(struct ocfs2_xa_loc *loc, u32 name_hash);
+
+ /* Add name+value storage to an entry */
+ void (*xlo_add_namevalue)(struct ocfs2_xa_loc *loc, int size);
+
+ /*
+ * Initialize the value buf's access and bh fields for this entry.
+ * ocfs2_xa_fill_value_buf() will handle the xv pointer.
+ */
+ void (*xlo_fill_value_buf)(struct ocfs2_xa_loc *loc,
+ struct ocfs2_xattr_value_buf *vb);
+};
+
+/*
+ * Describes an xattr entry location. This is a memory structure
+ * tracking the on-disk structure.
+ */
+struct ocfs2_xa_loc {
+ /* This xattr belongs to this inode */
+ struct inode *xl_inode;
+
+ /* The ocfs2_xattr_header inside the on-disk storage. Not NULL. */
+ struct ocfs2_xattr_header *xl_header;
+
+ /* Bytes from xl_header to the end of the storage */
+ int xl_size;
+
+ /*
+ * The ocfs2_xattr_entry this location describes. If this is
+ * NULL, this location describes the on-disk structure where it
+ * would have been.
+ */
+ struct ocfs2_xattr_entry *xl_entry;
+
+ /*
+ * Internal housekeeping
+ */
+
+ /* Buffer(s) containing this entry */
+ void *xl_storage;
+
+ /* Operations on the storage backing this location */
+ const struct ocfs2_xa_loc_operations *xl_ops;
+};
+
+/*
+ * Convenience functions to calculate how much space is needed for a
+ * given name+value pair
+ */
+static int namevalue_size(int name_len, uint64_t value_len)
+{
+ if (value_len > OCFS2_XATTR_INLINE_SIZE)
+ return OCFS2_XATTR_SIZE(name_len) + OCFS2_XATTR_ROOT_SIZE;
+ else
+ return OCFS2_XATTR_SIZE(name_len) + OCFS2_XATTR_SIZE(value_len);
+}
+
+static int namevalue_size_xi(struct ocfs2_xattr_info *xi)
+{
+ return namevalue_size(xi->xi_name_len, xi->xi_value_len);
+}
+
+static int namevalue_size_xe(struct ocfs2_xattr_entry *xe)
+{
+ u64 value_len = le64_to_cpu(xe->xe_value_size);
+
+ BUG_ON((value_len > OCFS2_XATTR_INLINE_SIZE) &&
+ ocfs2_xattr_is_local(xe));
+ return namevalue_size(xe->xe_name_len, value_len);
+}
+
+
static int ocfs2_xattr_bucket_get_name_value(struct super_block *sb,
struct ocfs2_xattr_header *xh,
int index,
@@ -212,14 +322,6 @@ static inline u16 ocfs2_blocks_per_xattr_bucket(struct super_block *sb)
return OCFS2_XATTR_BUCKET_SIZE / (1 << sb->s_blocksize_bits);
}
-static inline u16 ocfs2_xattr_max_xe_in_bucket(struct super_block *sb)
-{
- u16 len = sb->s_blocksize -
- offsetof(struct ocfs2_xattr_header, xh_entries);
-
- return len / sizeof(struct ocfs2_xattr_entry);
-}
-
#define bucket_blkno(_b) ((_b)->bu_bhs[0]->b_blocknr)
#define bucket_block(_b, _n) ((_b)->bu_bhs[(_n)]->b_data)
#define bucket_xh(_b) ((struct ocfs2_xattr_header *)bucket_block((_b), 0))
@@ -463,35 +565,22 @@ static u32 ocfs2_xattr_name_hash(struct inode *inode,
return hash;
}
-/*
- * ocfs2_xattr_hash_entry()
- *
- * Compute the hash of an extended attribute.
- */
-static void ocfs2_xattr_hash_entry(struct inode *inode,
- struct ocfs2_xattr_header *header,
- struct ocfs2_xattr_entry *entry)
+static int ocfs2_xattr_entry_real_size(int name_len, size_t value_len)
{
- u32 hash = 0;
- char *name = (char *)header + le16_to_cpu(entry->xe_name_offset);
-
- hash = ocfs2_xattr_name_hash(inode, name, entry->xe_name_len);
- entry->xe_name_hash = cpu_to_le32(hash);
-
- return;
+ return namevalue_size(name_len, value_len) +
+ sizeof(struct ocfs2_xattr_entry);
}
-static int ocfs2_xattr_entry_real_size(int name_len, size_t value_len)
+static int ocfs2_xi_entry_usage(struct ocfs2_xattr_info *xi)
{
- int size = 0;
-
- if (value_len <= OCFS2_XATTR_INLINE_SIZE)
- size = OCFS2_XATTR_SIZE(name_len) + OCFS2_XATTR_SIZE(value_len);
- else
- size = OCFS2_XATTR_SIZE(name_len) + OCFS2_XATTR_ROOT_SIZE;
- size += sizeof(struct ocfs2_xattr_entry);
+ return namevalue_size_xi(xi) +
+ sizeof(struct ocfs2_xattr_entry);
+}
- return size;
+static int ocfs2_xe_entry_usage(struct ocfs2_xattr_entry *xe)
+{
+ return namevalue_size_xe(xe) +
+ sizeof(struct ocfs2_xattr_entry);
}
int ocfs2_calc_security_init(struct inode *dir,
@@ -1308,452 +1397,897 @@ out:
return ret;
}
-static int ocfs2_xattr_cleanup(struct inode *inode,
- handle_t *handle,
- struct ocfs2_xattr_info *xi,
- struct ocfs2_xattr_search *xs,
- struct ocfs2_xattr_value_buf *vb,
- size_t offs)
+static int ocfs2_xa_check_space_helper(int needed_space, int free_start,
+ int num_entries)
{
- int ret = 0;
- size_t name_len = strlen(xi->name);
- void *val = xs->base + offs;
- size_t size = OCFS2_XATTR_SIZE(name_len) + OCFS2_XATTR_ROOT_SIZE;
+ int free_space;
- ret = vb->vb_access(handle, INODE_CACHE(inode), vb->vb_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (ret) {
- mlog_errno(ret);
- goto out;
- }
- /* Decrease xattr count */
- le16_add_cpu(&xs->header->xh_count, -1);
- /* Remove the xattr entry and tree root which has already be set*/
- memset((void *)xs->here, 0, sizeof(struct ocfs2_xattr_entry));
- memset(val, 0, size);
+ if (!needed_space)
+ return 0;
- ret = ocfs2_journal_dirty(handle, vb->vb_bh);
- if (ret < 0)
- mlog_errno(ret);
-out:
- return ret;
+ free_space = free_start -
+ sizeof(struct ocfs2_xattr_header) -
+ (num_entries * sizeof(struct ocfs2_xattr_entry)) -
+ OCFS2_XATTR_HEADER_GAP;
+ if (free_space < 0)
+ return -EIO;
+ if (free_space < needed_space)
+ return -ENOSPC;
+
+ return 0;
}
-static int ocfs2_xattr_update_entry(struct inode *inode,
- handle_t *handle,
- struct ocfs2_xattr_info *xi,
- struct ocfs2_xattr_search *xs,
- struct ocfs2_xattr_value_buf *vb,
- size_t offs)
+static int ocfs2_xa_journal_access(handle_t *handle, struct ocfs2_xa_loc *loc,
+ int type)
{
- int ret;
+ return loc->xl_ops->xlo_journal_access(handle, loc, type);
+}
- ret = vb->vb_access(handle, INODE_CACHE(inode), vb->vb_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (ret) {
- mlog_errno(ret);
- goto out;
- }
+static void ocfs2_xa_journal_dirty(handle_t *handle, struct ocfs2_xa_loc *loc)
+{
+ loc->xl_ops->xlo_journal_dirty(handle, loc);
+}
- xs->here->xe_name_offset = cpu_to_le16(offs);
- xs->here->xe_value_size = cpu_to_le64(xi->value_len);
- if (xi->value_len <= OCFS2_XATTR_INLINE_SIZE)
- ocfs2_xattr_set_local(xs->here, 1);
- else
- ocfs2_xattr_set_local(xs->here, 0);
- ocfs2_xattr_hash_entry(inode, xs->header, xs->here);
+/* Give a pointer into the storage for the given offset */
+static void *ocfs2_xa_offset_pointer(struct ocfs2_xa_loc *loc, int offset)
+{
+ BUG_ON(offset >= loc->xl_size);
+ return loc->xl_ops->xlo_offset_pointer(loc, offset);
+}
- ret = ocfs2_journal_dirty(handle, vb->vb_bh);
- if (ret < 0)
- mlog_errno(ret);
-out:
- return ret;
+/*
+ * Wipe the name+value pair and allow the storage to reclaim it. This
+ * must be followed by either removal of the entry or a call to
+ * ocfs2_xa_add_namevalue().
+ */
+static void ocfs2_xa_wipe_namevalue(struct ocfs2_xa_loc *loc)
+{
+ loc->xl_ops->xlo_wipe_namevalue(loc);
}
/*
- * ocfs2_xattr_set_value_outside()
- *
- * Set large size value in B tree.
+ * Find lowest offset to a name+value pair. This is the start of our
+ * downward-growing free space.
*/
-static int ocfs2_xattr_set_value_outside(struct inode *inode,
- struct ocfs2_xattr_info *xi,
- struct ocfs2_xattr_search *xs,
- struct ocfs2_xattr_set_ctxt *ctxt,
- struct ocfs2_xattr_value_buf *vb,
- size_t offs)
+static int ocfs2_xa_get_free_start(struct ocfs2_xa_loc *loc)
{
- size_t name_len = strlen(xi->name);
- void *val = xs->base + offs;
- struct ocfs2_xattr_value_root *xv = NULL;
- size_t size = OCFS2_XATTR_SIZE(name_len) + OCFS2_XATTR_ROOT_SIZE;
- int ret = 0;
+ return loc->xl_ops->xlo_get_free_start(loc);
+}
- memset(val, 0, size);
- memcpy(val, xi->name, name_len);
- xv = (struct ocfs2_xattr_value_root *)
- (val + OCFS2_XATTR_SIZE(name_len));
- xv->xr_clusters = 0;
- xv->xr_last_eb_blk = 0;
- xv->xr_list.l_tree_depth = 0;
- xv->xr_list.l_count = cpu_to_le16(1);
- xv->xr_list.l_next_free_rec = 0;
- vb->vb_xv = xv;
-
- ret = ocfs2_xattr_value_truncate(inode, vb, xi->value_len, ctxt);
- if (ret < 0) {
- mlog_errno(ret);
- return ret;
+/* Can we reuse loc->xl_entry for xi? */
+static int ocfs2_xa_can_reuse_entry(struct ocfs2_xa_loc *loc,
+ struct ocfs2_xattr_info *xi)
+{
+ return loc->xl_ops->xlo_can_reuse(loc, xi);
+}
+
+/* How much free space is needed to set the new value */
+static int ocfs2_xa_check_space(struct ocfs2_xa_loc *loc,
+ struct ocfs2_xattr_info *xi)
+{
+ return loc->xl_ops->xlo_check_space(loc, xi);
+}
+
+static void ocfs2_xa_add_entry(struct ocfs2_xa_loc *loc, u32 name_hash)
+{
+ loc->xl_ops->xlo_add_entry(loc, name_hash);
+ loc->xl_entry->xe_name_hash = cpu_to_le32(name_hash);
+ /*
+ * We can't leave the new entry's xe_name_offset at zero or
+ * add_namevalue() will go nuts. We set it to the size of our
+ * storage so that it can never be less than any other entry.
+ */
+ loc->xl_entry->xe_name_offset = cpu_to_le16(loc->xl_size);
+}
+
+static void ocfs2_xa_add_namevalue(struct ocfs2_xa_loc *loc,
+ struct ocfs2_xattr_info *xi)
+{
+ int size = namevalue_size_xi(xi);
+ int nameval_offset;
+ char *nameval_buf;
+
+ loc->xl_ops->xlo_add_namevalue(loc, size);
+ loc->xl_entry->xe_value_size = cpu_to_le64(xi->xi_value_len);
+ loc->xl_entry->xe_name_len = xi->xi_name_len;
+ ocfs2_xattr_set_type(loc->xl_entry, xi->xi_name_index);
+ ocfs2_xattr_set_local(loc->xl_entry,
+ xi->xi_value_len <= OCFS2_XATTR_INLINE_SIZE);
+
+ nameval_offset = le16_to_cpu(loc->xl_entry->xe_name_offset);
+ nameval_buf = ocfs2_xa_offset_pointer(loc, nameval_offset);
+ memset(nameval_buf, 0, size);
+ memcpy(nameval_buf, xi->xi_name, xi->xi_name_len);
+}
+
+static void ocfs2_xa_fill_value_buf(struct ocfs2_xa_loc *loc,
+ struct ocfs2_xattr_value_buf *vb)
+{
+ int nameval_offset = le16_to_cpu(loc->xl_entry->xe_name_offset);
+ int name_size = OCFS2_XATTR_SIZE(loc->xl_entry->xe_name_len);
+
+ /* Value bufs are for value trees */
+ BUG_ON(ocfs2_xattr_is_local(loc->xl_entry));
+ BUG_ON(namevalue_size_xe(loc->xl_entry) !=
+ (name_size + OCFS2_XATTR_ROOT_SIZE));
+
+ loc->xl_ops->xlo_fill_value_buf(loc, vb);
+ vb->vb_xv =
+ (struct ocfs2_xattr_value_root *)ocfs2_xa_offset_pointer(loc,
+ nameval_offset +
+ name_size);
+}
+
+static int ocfs2_xa_block_journal_access(handle_t *handle,
+ struct ocfs2_xa_loc *loc, int type)
+{
+ struct buffer_head *bh = loc->xl_storage;
+ ocfs2_journal_access_func access;
+
+ if (loc->xl_size == (bh->b_size -
+ offsetof(struct ocfs2_xattr_block,
+ xb_attrs.xb_header)))
+ access = ocfs2_journal_access_xb;
+ else
+ access = ocfs2_journal_access_di;
+ return access(handle, INODE_CACHE(loc->xl_inode), bh, type);
+}
+
+static void ocfs2_xa_block_journal_dirty(handle_t *handle,
+ struct ocfs2_xa_loc *loc)
+{
+ struct buffer_head *bh = loc->xl_storage;
+
+ ocfs2_journal_dirty(handle, bh);
+}
+
+static void *ocfs2_xa_block_offset_pointer(struct ocfs2_xa_loc *loc,
+ int offset)
+{
+ return (char *)loc->xl_header + offset;
+}
+
+static int ocfs2_xa_block_can_reuse(struct ocfs2_xa_loc *loc,
+ struct ocfs2_xattr_info *xi)
+{
+ /*
+ * Block storage is strict. If the sizes aren't exact, we will
+ * remove the old one and reinsert the new.
+ */
+ return namevalue_size_xe(loc->xl_entry) ==
+ namevalue_size_xi(xi);
+}
+
+static int ocfs2_xa_block_get_free_start(struct ocfs2_xa_loc *loc)
+{
+ struct ocfs2_xattr_header *xh = loc->xl_header;
+ int i, count = le16_to_cpu(xh->xh_count);
+ int offset, free_start = loc->xl_size;
+
+ for (i = 0; i < count; i++) {
+ offset = le16_to_cpu(xh->xh_entries[i].xe_name_offset);
+ if (offset < free_start)
+ free_start = offset;
}
- ret = ocfs2_xattr_update_entry(inode, ctxt->handle, xi, xs, vb, offs);
- if (ret < 0) {
- mlog_errno(ret);
- return ret;
+
+ return free_start;
+}
+
+static int ocfs2_xa_block_check_space(struct ocfs2_xa_loc *loc,
+ struct ocfs2_xattr_info *xi)
+{
+ int count = le16_to_cpu(loc->xl_header->xh_count);
+ int free_start = ocfs2_xa_get_free_start(loc);
+ int needed_space = ocfs2_xi_entry_usage(xi);
+
+ /*
+ * Block storage will reclaim the original entry before inserting
+ * the new value, so we only need the difference. If the new
+ * entry is smaller than the old one, we don't need anything.
+ */
+ if (loc->xl_entry) {
+ /* Don't need space if we're reusing! */
+ if (ocfs2_xa_can_reuse_entry(loc, xi))
+ needed_space = 0;
+ else
+ needed_space -= ocfs2_xe_entry_usage(loc->xl_entry);
}
- ret = __ocfs2_xattr_set_value_outside(inode, ctxt->handle, vb,
- xi->value, xi->value_len);
- if (ret < 0)
- mlog_errno(ret);
+ if (needed_space < 0)
+ needed_space = 0;
+ return ocfs2_xa_check_space_helper(needed_space, free_start, count);
+}
- return ret;
+/*
+ * Block storage for xattrs keeps the name+value pairs compacted. When
+ * we remove one, we have to shift any that preceded it towards the end.
+ */
+static void ocfs2_xa_block_wipe_namevalue(struct ocfs2_xa_loc *loc)
+{
+ int i, offset;
+ int namevalue_offset, first_namevalue_offset, namevalue_size;
+ struct ocfs2_xattr_entry *entry = loc->xl_entry;
+ struct ocfs2_xattr_header *xh = loc->xl_header;
+ int count = le16_to_cpu(xh->xh_count);
+
+ namevalue_offset = le16_to_cpu(entry->xe_name_offset);
+ namevalue_size = namevalue_size_xe(entry);
+ first_namevalue_offset = ocfs2_xa_get_free_start(loc);
+
+ /* Shift the name+value pairs */
+ memmove((char *)xh + first_namevalue_offset + namevalue_size,
+ (char *)xh + first_namevalue_offset,
+ namevalue_offset - first_namevalue_offset);
+ memset((char *)xh + first_namevalue_offset, 0, namevalue_size);
+
+ /* Now tell xh->xh_entries about it */
+ for (i = 0; i < count; i++) {
+ offset = le16_to_cpu(xh->xh_entries[i].xe_name_offset);
+ if (offset < namevalue_offset)
+ le16_add_cpu(&xh->xh_entries[i].xe_name_offset,
+ namevalue_size);
+ }
+
+ /*
+ * Note that we don't update xh_free_start or xh_name_value_len
+ * because they're not used in block-stored xattrs.
+ */
+}
+
+static void ocfs2_xa_block_add_entry(struct ocfs2_xa_loc *loc, u32 name_hash)
+{
+ int count = le16_to_cpu(loc->xl_header->xh_count);
+ loc->xl_entry = &(loc->xl_header->xh_entries[count]);
+ le16_add_cpu(&loc->xl_header->xh_count, 1);
+ memset(loc->xl_entry, 0, sizeof(struct ocfs2_xattr_entry));
+}
+
+static void ocfs2_xa_block_add_namevalue(struct ocfs2_xa_loc *loc, int size)
+{
+ int free_start = ocfs2_xa_get_free_start(loc);
+
+ loc->xl_entry->xe_name_offset = cpu_to_le16(free_start - size);
+}
+
+static void ocfs2_xa_block_fill_value_buf(struct ocfs2_xa_loc *loc,
+ struct ocfs2_xattr_value_buf *vb)
+{
+ struct buffer_head *bh = loc->xl_storage;
+
+ if (loc->xl_size == (bh->b_size -
+ offsetof(struct ocfs2_xattr_block,
+ xb_attrs.xb_header)))
+ vb->vb_access = ocfs2_journal_access_xb;
+ else
+ vb->vb_access = ocfs2_journal_access_di;
+ vb->vb_bh = bh;
}
/*
- * ocfs2_xattr_set_entry_local()
- *
- * Set, replace or remove extended attribute in local.
+ * Operations for xattrs stored in blocks. This includes inline inode
+ * storage and unindexed ocfs2_xattr_blocks.
*/
-static void ocfs2_xattr_set_entry_local(struct inode *inode,
- struct ocfs2_xattr_info *xi,
- struct ocfs2_xattr_search *xs,
- struct ocfs2_xattr_entry *last,
- size_t min_offs)
+static const struct ocfs2_xa_loc_operations ocfs2_xa_block_loc_ops = {
+ .xlo_journal_access = ocfs2_xa_block_journal_access,
+ .xlo_journal_dirty = ocfs2_xa_block_journal_dirty,
+ .xlo_offset_pointer = ocfs2_xa_block_offset_pointer,
+ .xlo_check_space = ocfs2_xa_block_check_space,
+ .xlo_can_reuse = ocfs2_xa_block_can_reuse,
+ .xlo_get_free_start = ocfs2_xa_block_get_free_start,
+ .xlo_wipe_namevalue = ocfs2_xa_block_wipe_namevalue,
+ .xlo_add_entry = ocfs2_xa_block_add_entry,
+ .xlo_add_namevalue = ocfs2_xa_block_add_namevalue,
+ .xlo_fill_value_buf = ocfs2_xa_block_fill_value_buf,
+};
+
+static int ocfs2_xa_bucket_journal_access(handle_t *handle,
+ struct ocfs2_xa_loc *loc, int type)
{
- size_t name_len = strlen(xi->name);
- int i;
+ struct ocfs2_xattr_bucket *bucket = loc->xl_storage;
- if (xi->value && xs->not_found) {
- /* Insert the new xattr entry. */
- le16_add_cpu(&xs->header->xh_count, 1);
- ocfs2_xattr_set_type(last, xi->name_index);
- ocfs2_xattr_set_local(last, 1);
- last->xe_name_len = name_len;
- } else {
- void *first_val;
- void *val;
- size_t offs, size;
-
- first_val = xs->base + min_offs;
- offs = le16_to_cpu(xs->here->xe_name_offset);
- val = xs->base + offs;
-
- if (le64_to_cpu(xs->here->xe_value_size) >
- OCFS2_XATTR_INLINE_SIZE)
- size = OCFS2_XATTR_SIZE(name_len) +
- OCFS2_XATTR_ROOT_SIZE;
+ return ocfs2_xattr_bucket_journal_access(handle, bucket, type);
+}
+
+static void ocfs2_xa_bucket_journal_dirty(handle_t *handle,
+ struct ocfs2_xa_loc *loc)
+{
+ struct ocfs2_xattr_bucket *bucket = loc->xl_storage;
+
+ ocfs2_xattr_bucket_journal_dirty(handle, bucket);
+}
+
+static void *ocfs2_xa_bucket_offset_pointer(struct ocfs2_xa_loc *loc,
+ int offset)
+{
+ struct ocfs2_xattr_bucket *bucket = loc->xl_storage;
+ int block, block_offset;
+
+ /* The header is at the front of the bucket */
+ block = offset >> loc->xl_inode->i_sb->s_blocksize_bits;
+ block_offset = offset % loc->xl_inode->i_sb->s_blocksize;
+
+ return bucket_block(bucket, block) + block_offset;
+}
+
+static int ocfs2_xa_bucket_can_reuse(struct ocfs2_xa_loc *loc,
+ struct ocfs2_xattr_info *xi)
+{
+ return namevalue_size_xe(loc->xl_entry) >=
+ namevalue_size_xi(xi);
+}
+
+static int ocfs2_xa_bucket_get_free_start(struct ocfs2_xa_loc *loc)
+{
+ struct ocfs2_xattr_bucket *bucket = loc->xl_storage;
+ return le16_to_cpu(bucket_xh(bucket)->xh_free_start);
+}
+
+static int ocfs2_bucket_align_free_start(struct super_block *sb,
+ int free_start, int size)
+{
+ /*
+ * We need to make sure that the name+value pair fits within
+ * one block.
+ */
+ if (((free_start - size) >> sb->s_blocksize_bits) !=
+ ((free_start - 1) >> sb->s_blocksize_bits))
+ free_start -= free_start % sb->s_blocksize;
+
+ return free_start;
+}
+
+static int ocfs2_xa_bucket_check_space(struct ocfs2_xa_loc *loc,
+ struct ocfs2_xattr_info *xi)
+{
+ int rc;
+ int count = le16_to_cpu(loc->xl_header->xh_count);
+ int free_start = ocfs2_xa_get_free_start(loc);
+ int needed_space = ocfs2_xi_entry_usage(xi);
+ int size = namevalue_size_xi(xi);
+ struct super_block *sb = loc->xl_inode->i_sb;
+
+ /*
+ * Bucket storage does not reclaim name+value pairs it cannot
+ * reuse. They live as holes until the bucket fills, and then
+ * the bucket is defragmented. However, the bucket can reclaim
+ * the ocfs2_xattr_entry.
+ */
+ if (loc->xl_entry) {
+ /* Don't need space if we're reusing! */
+ if (ocfs2_xa_can_reuse_entry(loc, xi))
+ needed_space = 0;
else
- size = OCFS2_XATTR_SIZE(name_len) +
- OCFS2_XATTR_SIZE(le64_to_cpu(xs->here->xe_value_size));
-
- if (xi->value && size == OCFS2_XATTR_SIZE(name_len) +
- OCFS2_XATTR_SIZE(xi->value_len)) {
- /* The old and the new value have the
- same size. Just replace the value. */
- ocfs2_xattr_set_local(xs->here, 1);
- xs->here->xe_value_size = cpu_to_le64(xi->value_len);
- /* Clear value bytes. */
- memset(val + OCFS2_XATTR_SIZE(name_len),
- 0,
- OCFS2_XATTR_SIZE(xi->value_len));
- memcpy(val + OCFS2_XATTR_SIZE(name_len),
- xi->value,
- xi->value_len);
- return;
- }
- /* Remove the old name+value. */
- memmove(first_val + size, first_val, val - first_val);
- memset(first_val, 0, size);
- xs->here->xe_name_hash = 0;
- xs->here->xe_name_offset = 0;
- ocfs2_xattr_set_local(xs->here, 1);
- xs->here->xe_value_size = 0;
-
- min_offs += size;
-
- /* Adjust all value offsets. */
- last = xs->header->xh_entries;
- for (i = 0 ; i < le16_to_cpu(xs->header->xh_count); i++) {
- size_t o = le16_to_cpu(last->xe_name_offset);
-
- if (o < offs)
- last->xe_name_offset = cpu_to_le16(o + size);
- last += 1;
- }
+ needed_space -= sizeof(struct ocfs2_xattr_entry);
+ }
+ BUG_ON(needed_space < 0);
- if (!xi->value) {
- /* Remove the old entry. */
- last -= 1;
- memmove(xs->here, xs->here + 1,
- (void *)last - (void *)xs->here);
- memset(last, 0, sizeof(struct ocfs2_xattr_entry));
- le16_add_cpu(&xs->header->xh_count, -1);
- }
+ if (free_start < size) {
+ if (needed_space)
+ return -ENOSPC;
+ } else {
+ /*
+ * First we check if it would fit in the first place.
+ * Below, we align the free start to a block. This may
+ * slide us below the minimum gap. By checking unaligned
+ * first, we avoid that error.
+ */
+ rc = ocfs2_xa_check_space_helper(needed_space, free_start,
+ count);
+ if (rc)
+ return rc;
+ free_start = ocfs2_bucket_align_free_start(sb, free_start,
+ size);
}
- if (xi->value) {
- /* Insert the new name+value. */
- size_t size = OCFS2_XATTR_SIZE(name_len) +
- OCFS2_XATTR_SIZE(xi->value_len);
- void *val = xs->base + min_offs - size;
+ return ocfs2_xa_check_space_helper(needed_space, free_start, count);
+}
+
+static void ocfs2_xa_bucket_wipe_namevalue(struct ocfs2_xa_loc *loc)
+{
+ le16_add_cpu(&loc->xl_header->xh_name_value_len,
+ -namevalue_size_xe(loc->xl_entry));
+}
- xs->here->xe_name_offset = cpu_to_le16(min_offs - size);
- memset(val, 0, size);
- memcpy(val, xi->name, name_len);
- memcpy(val + OCFS2_XATTR_SIZE(name_len),
- xi->value,
- xi->value_len);
- xs->here->xe_value_size = cpu_to_le64(xi->value_len);
- ocfs2_xattr_set_local(xs->here, 1);
- ocfs2_xattr_hash_entry(inode, xs->header, xs->here);
+static void ocfs2_xa_bucket_add_entry(struct ocfs2_xa_loc *loc, u32 name_hash)
+{
+ struct ocfs2_xattr_header *xh = loc->xl_header;
+ int count = le16_to_cpu(xh->xh_count);
+ int low = 0, high = count - 1, tmp;
+ struct ocfs2_xattr_entry *tmp_xe;
+
+ /*
+ * We keep buckets sorted by name_hash, so we need to find
+ * our insert place.
+ */
+ while (low <= high && count) {
+ tmp = (low + high) / 2;
+ tmp_xe = &xh->xh_entries[tmp];
+
+ if (name_hash > le32_to_cpu(tmp_xe->xe_name_hash))
+ low = tmp + 1;
+ else if (name_hash < le32_to_cpu(tmp_xe->xe_name_hash))
+ high = tmp - 1;
+ else {
+ low = tmp;
+ break;
+ }
}
- return;
+ if (low != count)
+ memmove(&xh->xh_entries[low + 1],
+ &xh->xh_entries[low],
+ ((count - low) * sizeof(struct ocfs2_xattr_entry)));
+
+ le16_add_cpu(&xh->xh_count, 1);
+ loc->xl_entry = &xh->xh_entries[low];
+ memset(loc->xl_entry, 0, sizeof(struct ocfs2_xattr_entry));
+}
+
+static void ocfs2_xa_bucket_add_namevalue(struct ocfs2_xa_loc *loc, int size)
+{
+ int free_start = ocfs2_xa_get_free_start(loc);
+ struct ocfs2_xattr_header *xh = loc->xl_header;
+ struct super_block *sb = loc->xl_inode->i_sb;
+ int nameval_offset;
+
+ free_start = ocfs2_bucket_align_free_start(sb, free_start, size);
+ nameval_offset = free_start - size;
+ loc->xl_entry->xe_name_offset = cpu_to_le16(nameval_offset);
+ xh->xh_free_start = cpu_to_le16(nameval_offset);
+ le16_add_cpu(&xh->xh_name_value_len, size);
+
+}
+
+static void ocfs2_xa_bucket_fill_value_buf(struct ocfs2_xa_loc *loc,
+ struct ocfs2_xattr_value_buf *vb)
+{
+ struct ocfs2_xattr_bucket *bucket = loc->xl_storage;
+ struct super_block *sb = loc->xl_inode->i_sb;
+ int nameval_offset = le16_to_cpu(loc->xl_entry->xe_name_offset);
+ int size = namevalue_size_xe(loc->xl_entry);
+ int block_offset = nameval_offset >> sb->s_blocksize_bits;
+
+ /* Values are not allowed to straddle block boundaries */
+ BUG_ON(block_offset !=
+ ((nameval_offset + size - 1) >> sb->s_blocksize_bits));
+ /* We expect the bucket to be filled in */
+ BUG_ON(!bucket->bu_bhs[block_offset]);
+
+ vb->vb_access = ocfs2_journal_access;
+ vb->vb_bh = bucket->bu_bhs[block_offset];
+}
+
+/* Operations for xattrs stored in buckets. */
+static const struct ocfs2_xa_loc_operations ocfs2_xa_bucket_loc_ops = {
+ .xlo_journal_access = ocfs2_xa_bucket_journal_access,
+ .xlo_journal_dirty = ocfs2_xa_bucket_journal_dirty,
+ .xlo_offset_pointer = ocfs2_xa_bucket_offset_pointer,
+ .xlo_check_space = ocfs2_xa_bucket_check_space,
+ .xlo_can_reuse = ocfs2_xa_bucket_can_reuse,
+ .xlo_get_free_start = ocfs2_xa_bucket_get_free_start,
+ .xlo_wipe_namevalue = ocfs2_xa_bucket_wipe_namevalue,
+ .xlo_add_entry = ocfs2_xa_bucket_add_entry,
+ .xlo_add_namevalue = ocfs2_xa_bucket_add_namevalue,
+ .xlo_fill_value_buf = ocfs2_xa_bucket_fill_value_buf,
+};
+
+static unsigned int ocfs2_xa_value_clusters(struct ocfs2_xa_loc *loc)
+{
+ struct ocfs2_xattr_value_buf vb;
+
+ if (ocfs2_xattr_is_local(loc->xl_entry))
+ return 0;
+
+ ocfs2_xa_fill_value_buf(loc, &vb);
+ return le32_to_cpu(vb.vb_xv->xr_clusters);
+}
+
+static int ocfs2_xa_value_truncate(struct ocfs2_xa_loc *loc, u64 bytes,
+ struct ocfs2_xattr_set_ctxt *ctxt)
+{
+ int trunc_rc, access_rc;
+ struct ocfs2_xattr_value_buf vb;
+
+ ocfs2_xa_fill_value_buf(loc, &vb);
+ trunc_rc = ocfs2_xattr_value_truncate(loc->xl_inode, &vb, bytes,
+ ctxt);
+
+ /*
+ * The caller of ocfs2_xa_value_truncate() has already called
+ * ocfs2_xa_journal_access on the loc. However, The truncate code
+ * calls ocfs2_extend_trans(). This may commit the previous
+ * transaction and open a new one. If this is a bucket, truncate
+ * could leave only vb->vb_bh set up for journaling. Meanwhile,
+ * the caller is expecting to dirty the entire bucket. So we must
+ * reset the journal work. We do this even if truncate has failed,
+ * as it could have failed after committing the extend.
+ */
+ access_rc = ocfs2_xa_journal_access(ctxt->handle, loc,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+
+ /* Errors in truncate take precedence */
+ return trunc_rc ? trunc_rc : access_rc;
+}
+
+static void ocfs2_xa_remove_entry(struct ocfs2_xa_loc *loc)
+{
+ int index, count;
+ struct ocfs2_xattr_header *xh = loc->xl_header;
+ struct ocfs2_xattr_entry *entry = loc->xl_entry;
+
+ ocfs2_xa_wipe_namevalue(loc);
+ loc->xl_entry = NULL;
+
+ le16_add_cpu(&xh->xh_count, -1);
+ count = le16_to_cpu(xh->xh_count);
+
+ /*
+ * Only zero out the entry if there are more remaining. This is
+ * important for an empty bucket, as it keeps track of the
+ * bucket's hash value. It doesn't hurt empty block storage.
+ */
+ if (count) {
+ index = ((char *)entry - (char *)&xh->xh_entries) /
+ sizeof(struct ocfs2_xattr_entry);
+ memmove(&xh->xh_entries[index], &xh->xh_entries[index + 1],
+ (count - index) * sizeof(struct ocfs2_xattr_entry));
+ memset(&xh->xh_entries[count], 0,
+ sizeof(struct ocfs2_xattr_entry));
+ }
}
/*
- * ocfs2_xattr_set_entry()
+ * If we have a problem adjusting the size of an external value during
+ * ocfs2_xa_prepare_entry() or ocfs2_xa_remove(), we may have an xattr
+ * in an intermediate state. For example, the value may be partially
+ * truncated.
+ *
+ * If the value tree hasn't changed, the extend/truncate went nowhere.
+ * We have nothing to do. The caller can treat it as a straight error.
*
- * Set extended attribute entry into inode or block.
+ * If the value tree got partially truncated, we now have a corrupted
+ * extended attribute. We're going to wipe its entry and leak the
+ * clusters. Better to leak some storage than leave a corrupt entry.
*
- * If extended attribute value size > OCFS2_XATTR_INLINE_SIZE,
- * We first insert tree root(ocfs2_xattr_value_root) with set_entry_local(),
- * then set value in B tree with set_value_outside().
+ * If the value tree grew, it obviously didn't grow enough for the
+ * new entry. We're not going to try and reclaim those clusters either.
+ * If there was already an external value there (orig_clusters != 0),
+ * the new clusters are attached safely and we can just leave the old
+ * value in place. If there was no external value there, we remove
+ * the entry.
+ *
+ * This way, the xattr block we store in the journal will be consistent.
+ * If the size change broke because of the journal, no changes will hit
+ * disk anyway.
*/
-static int ocfs2_xattr_set_entry(struct inode *inode,
- struct ocfs2_xattr_info *xi,
- struct ocfs2_xattr_search *xs,
- struct ocfs2_xattr_set_ctxt *ctxt,
- int flag)
-{
- struct ocfs2_xattr_entry *last;
- struct ocfs2_inode_info *oi = OCFS2_I(inode);
- struct ocfs2_dinode *di = (struct ocfs2_dinode *)xs->inode_bh->b_data;
- size_t min_offs = xs->end - xs->base, name_len = strlen(xi->name);
- size_t size_l = 0;
- handle_t *handle = ctxt->handle;
- int free, i, ret;
- struct ocfs2_xattr_info xi_l = {
- .name_index = xi->name_index,
- .name = xi->name,
- .value = xi->value,
- .value_len = xi->value_len,
- };
- struct ocfs2_xattr_value_buf vb = {
- .vb_bh = xs->xattr_bh,
- .vb_access = ocfs2_journal_access_di,
- };
+static void ocfs2_xa_cleanup_value_truncate(struct ocfs2_xa_loc *loc,
+ const char *what,
+ unsigned int orig_clusters)
+{
+ unsigned int new_clusters = ocfs2_xa_value_clusters(loc);
+ char *nameval_buf = ocfs2_xa_offset_pointer(loc,
+ le16_to_cpu(loc->xl_entry->xe_name_offset));
+
+ if (new_clusters < orig_clusters) {
+ mlog(ML_ERROR,
+ "Partial truncate while %s xattr %.*s. Leaking "
+ "%u clusters and removing the entry\n",
+ what, loc->xl_entry->xe_name_len, nameval_buf,
+ orig_clusters - new_clusters);
+ ocfs2_xa_remove_entry(loc);
+ } else if (!orig_clusters) {
+ mlog(ML_ERROR,
+ "Unable to allocate an external value for xattr "
+ "%.*s safely. Leaking %u clusters and removing the "
+ "entry\n",
+ loc->xl_entry->xe_name_len, nameval_buf,
+ new_clusters - orig_clusters);
+ ocfs2_xa_remove_entry(loc);
+ } else if (new_clusters > orig_clusters)
+ mlog(ML_ERROR,
+ "Unable to grow xattr %.*s safely. %u new clusters "
+ "have been added, but the value will not be "
+ "modified\n",
+ loc->xl_entry->xe_name_len, nameval_buf,
+ new_clusters - orig_clusters);
+}
+
+static int ocfs2_xa_remove(struct ocfs2_xa_loc *loc,
+ struct ocfs2_xattr_set_ctxt *ctxt)
+{
+ int rc = 0;
+ unsigned int orig_clusters;
+
+ if (!ocfs2_xattr_is_local(loc->xl_entry)) {
+ orig_clusters = ocfs2_xa_value_clusters(loc);
+ rc = ocfs2_xa_value_truncate(loc, 0, ctxt);
+ if (rc) {
+ mlog_errno(rc);
+ /*
+ * Since this is remove, we can return 0 if
+ * ocfs2_xa_cleanup_value_truncate() is going to
+ * wipe the entry anyway. So we check the
+ * cluster count as well.
+ */
+ if (orig_clusters != ocfs2_xa_value_clusters(loc))
+ rc = 0;
+ ocfs2_xa_cleanup_value_truncate(loc, "removing",
+ orig_clusters);
+ if (rc)
+ goto out;
+ }
+ }
- if (!(flag & OCFS2_INLINE_XATTR_FL)) {
- BUG_ON(xs->xattr_bh == xs->inode_bh);
- vb.vb_access = ocfs2_journal_access_xb;
- } else
- BUG_ON(xs->xattr_bh != xs->inode_bh);
+ ocfs2_xa_remove_entry(loc);
- /* Compute min_offs, last and free space. */
- last = xs->header->xh_entries;
+out:
+ return rc;
+}
- for (i = 0 ; i < le16_to_cpu(xs->header->xh_count); i++) {
- size_t offs = le16_to_cpu(last->xe_name_offset);
- if (offs < min_offs)
- min_offs = offs;
- last += 1;
- }
+static void ocfs2_xa_install_value_root(struct ocfs2_xa_loc *loc)
+{
+ int name_size = OCFS2_XATTR_SIZE(loc->xl_entry->xe_name_len);
+ char *nameval_buf;
- free = min_offs - ((void *)last - xs->base) - OCFS2_XATTR_HEADER_GAP;
- if (free < 0)
- return -EIO;
+ nameval_buf = ocfs2_xa_offset_pointer(loc,
+ le16_to_cpu(loc->xl_entry->xe_name_offset));
+ memcpy(nameval_buf + name_size, &def_xv, OCFS2_XATTR_ROOT_SIZE);
+}
- if (!xs->not_found) {
- size_t size = 0;
- if (ocfs2_xattr_is_local(xs->here))
- size = OCFS2_XATTR_SIZE(name_len) +
- OCFS2_XATTR_SIZE(le64_to_cpu(xs->here->xe_value_size));
- else
- size = OCFS2_XATTR_SIZE(name_len) +
- OCFS2_XATTR_ROOT_SIZE;
- free += (size + sizeof(struct ocfs2_xattr_entry));
- }
- /* Check free space in inode or block */
- if (xi->value && xi->value_len > OCFS2_XATTR_INLINE_SIZE) {
- if (free < sizeof(struct ocfs2_xattr_entry) +
- OCFS2_XATTR_SIZE(name_len) +
- OCFS2_XATTR_ROOT_SIZE) {
- ret = -ENOSPC;
- goto out;
+/*
+ * Take an existing entry and make it ready for the new value. This
+ * won't allocate space, but it may free space. It should be ready for
+ * ocfs2_xa_prepare_entry() to finish the work.
+ */
+static int ocfs2_xa_reuse_entry(struct ocfs2_xa_loc *loc,
+ struct ocfs2_xattr_info *xi,
+ struct ocfs2_xattr_set_ctxt *ctxt)
+{
+ int rc = 0;
+ int name_size = OCFS2_XATTR_SIZE(xi->xi_name_len);
+ unsigned int orig_clusters;
+ char *nameval_buf;
+ int xe_local = ocfs2_xattr_is_local(loc->xl_entry);
+ int xi_local = xi->xi_value_len <= OCFS2_XATTR_INLINE_SIZE;
+
+ BUG_ON(OCFS2_XATTR_SIZE(loc->xl_entry->xe_name_len) !=
+ name_size);
+
+ nameval_buf = ocfs2_xa_offset_pointer(loc,
+ le16_to_cpu(loc->xl_entry->xe_name_offset));
+ if (xe_local) {
+ memset(nameval_buf + name_size, 0,
+ namevalue_size_xe(loc->xl_entry) - name_size);
+ if (!xi_local)
+ ocfs2_xa_install_value_root(loc);
+ } else {
+ orig_clusters = ocfs2_xa_value_clusters(loc);
+ if (xi_local) {
+ rc = ocfs2_xa_value_truncate(loc, 0, ctxt);
+ if (rc < 0)
+ mlog_errno(rc);
+ else
+ memset(nameval_buf + name_size, 0,
+ namevalue_size_xe(loc->xl_entry) -
+ name_size);
+ } else if (le64_to_cpu(loc->xl_entry->xe_value_size) >
+ xi->xi_value_len) {
+ rc = ocfs2_xa_value_truncate(loc, xi->xi_value_len,
+ ctxt);
+ if (rc < 0)
+ mlog_errno(rc);
}
- size_l = OCFS2_XATTR_SIZE(name_len) + OCFS2_XATTR_ROOT_SIZE;
- xi_l.value = (void *)&def_xv;
- xi_l.value_len = OCFS2_XATTR_ROOT_SIZE;
- } else if (xi->value) {
- if (free < sizeof(struct ocfs2_xattr_entry) +
- OCFS2_XATTR_SIZE(name_len) +
- OCFS2_XATTR_SIZE(xi->value_len)) {
- ret = -ENOSPC;
+
+ if (rc) {
+ ocfs2_xa_cleanup_value_truncate(loc, "reusing",
+ orig_clusters);
goto out;
}
}
- if (!xs->not_found) {
- /* For existing extended attribute */
- size_t size = OCFS2_XATTR_SIZE(name_len) +
- OCFS2_XATTR_SIZE(le64_to_cpu(xs->here->xe_value_size));
- size_t offs = le16_to_cpu(xs->here->xe_name_offset);
- void *val = xs->base + offs;
+ loc->xl_entry->xe_value_size = cpu_to_le64(xi->xi_value_len);
+ ocfs2_xattr_set_local(loc->xl_entry, xi_local);
- if (ocfs2_xattr_is_local(xs->here) && size == size_l) {
- /* Replace existing local xattr with tree root */
- ret = ocfs2_xattr_set_value_outside(inode, xi, xs,
- ctxt, &vb, offs);
- if (ret < 0)
- mlog_errno(ret);
- goto out;
- } else if (!ocfs2_xattr_is_local(xs->here)) {
- /* For existing xattr which has value outside */
- vb.vb_xv = (struct ocfs2_xattr_value_root *)
- (val + OCFS2_XATTR_SIZE(name_len));
+out:
+ return rc;
+}
- if (xi->value_len > OCFS2_XATTR_INLINE_SIZE) {
- /*
- * If new value need set outside also,
- * first truncate old value to new value,
- * then set new value with set_value_outside().
- */
- ret = ocfs2_xattr_value_truncate(inode,
- &vb,
- xi->value_len,
- ctxt);
- if (ret < 0) {
- mlog_errno(ret);
- goto out;
- }
+/*
+ * Prepares loc->xl_entry to receive the new xattr. This includes
+ * properly setting up the name+value pair region. If loc->xl_entry
+ * already exists, it will take care of modifying it appropriately.
+ *
+ * Note that this modifies the data. You did journal_access already,
+ * right?
+ */
+static int ocfs2_xa_prepare_entry(struct ocfs2_xa_loc *loc,
+ struct ocfs2_xattr_info *xi,
+ u32 name_hash,
+ struct ocfs2_xattr_set_ctxt *ctxt)
+{
+ int rc = 0;
+ unsigned int orig_clusters;
+ __le64 orig_value_size = 0;
- ret = ocfs2_xattr_update_entry(inode,
- handle,
- xi,
- xs,
- &vb,
- offs);
- if (ret < 0) {
- mlog_errno(ret);
- goto out;
- }
+ rc = ocfs2_xa_check_space(loc, xi);
+ if (rc)
+ goto out;
- ret = __ocfs2_xattr_set_value_outside(inode,
- handle,
- &vb,
- xi->value,
- xi->value_len);
- if (ret < 0)
- mlog_errno(ret);
+ if (loc->xl_entry) {
+ if (ocfs2_xa_can_reuse_entry(loc, xi)) {
+ orig_value_size = loc->xl_entry->xe_value_size;
+ rc = ocfs2_xa_reuse_entry(loc, xi, ctxt);
+ if (rc)
+ goto out;
+ goto alloc_value;
+ }
+
+ if (!ocfs2_xattr_is_local(loc->xl_entry)) {
+ orig_clusters = ocfs2_xa_value_clusters(loc);
+ rc = ocfs2_xa_value_truncate(loc, 0, ctxt);
+ if (rc) {
+ mlog_errno(rc);
+ ocfs2_xa_cleanup_value_truncate(loc,
+ "overwriting",
+ orig_clusters);
goto out;
- } else {
- /*
- * If new value need set in local,
- * just trucate old value to zero.
- */
- ret = ocfs2_xattr_value_truncate(inode,
- &vb,
- 0,
- ctxt);
- if (ret < 0)
- mlog_errno(ret);
}
}
+ ocfs2_xa_wipe_namevalue(loc);
+ } else
+ ocfs2_xa_add_entry(loc, name_hash);
+
+ /*
+ * If we get here, we have a blank entry. Fill it. We grow our
+ * name+value pair back from the end.
+ */
+ ocfs2_xa_add_namevalue(loc, xi);
+ if (xi->xi_value_len > OCFS2_XATTR_INLINE_SIZE)
+ ocfs2_xa_install_value_root(loc);
+
+alloc_value:
+ if (xi->xi_value_len > OCFS2_XATTR_INLINE_SIZE) {
+ orig_clusters = ocfs2_xa_value_clusters(loc);
+ rc = ocfs2_xa_value_truncate(loc, xi->xi_value_len, ctxt);
+ if (rc < 0) {
+ /*
+ * If we tried to grow an existing external value,
+ * ocfs2_xa_cleanuP-value_truncate() is going to
+ * let it stand. We have to restore its original
+ * value size.
+ */
+ loc->xl_entry->xe_value_size = orig_value_size;
+ ocfs2_xa_cleanup_value_truncate(loc, "growing",
+ orig_clusters);
+ mlog_errno(rc);
+ }
}
- ret = ocfs2_journal_access_di(handle, INODE_CACHE(inode), xs->inode_bh,
+out:
+ return rc;
+}
+
+/*
+ * Store the value portion of the name+value pair. This will skip
+ * values that are stored externally. Their tree roots were set up
+ * by ocfs2_xa_prepare_entry().
+ */
+static int ocfs2_xa_store_value(struct ocfs2_xa_loc *loc,
+ struct ocfs2_xattr_info *xi,
+ struct ocfs2_xattr_set_ctxt *ctxt)
+{
+ int rc = 0;
+ int nameval_offset = le16_to_cpu(loc->xl_entry->xe_name_offset);
+ int name_size = OCFS2_XATTR_SIZE(xi->xi_name_len);
+ char *nameval_buf;
+ struct ocfs2_xattr_value_buf vb;
+
+ nameval_buf = ocfs2_xa_offset_pointer(loc, nameval_offset);
+ if (xi->xi_value_len > OCFS2_XATTR_INLINE_SIZE) {
+ ocfs2_xa_fill_value_buf(loc, &vb);
+ rc = __ocfs2_xattr_set_value_outside(loc->xl_inode,
+ ctxt->handle, &vb,
+ xi->xi_value,
+ xi->xi_value_len);
+ } else
+ memcpy(nameval_buf + name_size, xi->xi_value, xi->xi_value_len);
+
+ return rc;
+}
+
+static int ocfs2_xa_set(struct ocfs2_xa_loc *loc,
+ struct ocfs2_xattr_info *xi,
+ struct ocfs2_xattr_set_ctxt *ctxt)
+{
+ int ret;
+ u32 name_hash = ocfs2_xattr_name_hash(loc->xl_inode, xi->xi_name,
+ xi->xi_name_len);
+
+ ret = ocfs2_xa_journal_access(ctxt->handle, loc,
OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
goto out;
}
- if (!(flag & OCFS2_INLINE_XATTR_FL)) {
- ret = vb.vb_access(handle, INODE_CACHE(inode), vb.vb_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (ret) {
- mlog_errno(ret);
- goto out;
- }
- }
-
/*
- * Set value in local, include set tree root in local.
- * This is the first step for value size >INLINE_SIZE.
+ * From here on out, everything is going to modify the buffer a
+ * little. Errors are going to leave the xattr header in a
+ * sane state. Thus, even with errors we dirty the sucker.
*/
- ocfs2_xattr_set_entry_local(inode, &xi_l, xs, last, min_offs);
- if (!(flag & OCFS2_INLINE_XATTR_FL)) {
- ret = ocfs2_journal_dirty(handle, xs->xattr_bh);
- if (ret < 0) {
- mlog_errno(ret);
- goto out;
- }
+ /* Don't worry, we are never called with !xi_value and !xl_entry */
+ if (!xi->xi_value) {
+ ret = ocfs2_xa_remove(loc, ctxt);
+ goto out_dirty;
}
- if (!(oi->ip_dyn_features & OCFS2_INLINE_XATTR_FL) &&
- (flag & OCFS2_INLINE_XATTR_FL)) {
- struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
- unsigned int xattrsize = osb->s_xattr_inline_size;
-
- /*
- * Adjust extent record count or inline data size
- * to reserve space for extended attribute.
- */
- if (oi->ip_dyn_features & OCFS2_INLINE_DATA_FL) {
- struct ocfs2_inline_data *idata = &di->id2.i_data;
- le16_add_cpu(&idata->id_count, -xattrsize);
- } else if (!(ocfs2_inode_is_fast_symlink(inode))) {
- struct ocfs2_extent_list *el = &di->id2.i_list;
- le16_add_cpu(&el->l_count, -(xattrsize /
- sizeof(struct ocfs2_extent_rec)));
- }
- di->i_xattr_inline_size = cpu_to_le16(xattrsize);
+ ret = ocfs2_xa_prepare_entry(loc, xi, name_hash, ctxt);
+ if (ret) {
+ if (ret != -ENOSPC)
+ mlog_errno(ret);
+ goto out_dirty;
}
- /* Update xattr flag */
- spin_lock(&oi->ip_lock);
- oi->ip_dyn_features |= flag;
- di->i_dyn_features = cpu_to_le16(oi->ip_dyn_features);
- spin_unlock(&oi->ip_lock);
- ret = ocfs2_journal_dirty(handle, xs->inode_bh);
- if (ret < 0)
+ ret = ocfs2_xa_store_value(loc, xi, ctxt);
+ if (ret)
mlog_errno(ret);
- if (!ret && xi->value_len > OCFS2_XATTR_INLINE_SIZE) {
- /*
- * Set value outside in B tree.
- * This is the second step for value size > INLINE_SIZE.
- */
- size_t offs = le16_to_cpu(xs->here->xe_name_offset);
- ret = ocfs2_xattr_set_value_outside(inode, xi, xs, ctxt,
- &vb, offs);
- if (ret < 0) {
- int ret2;
+out_dirty:
+ ocfs2_xa_journal_dirty(ctxt->handle, loc);
- mlog_errno(ret);
- /*
- * If set value outside failed, we have to clean
- * the junk tree root we have already set in local.
- */
- ret2 = ocfs2_xattr_cleanup(inode, ctxt->handle,
- xi, xs, &vb, offs);
- if (ret2 < 0)
- mlog_errno(ret2);
- }
- }
out:
return ret;
}
+static void ocfs2_init_dinode_xa_loc(struct ocfs2_xa_loc *loc,
+ struct inode *inode,
+ struct buffer_head *bh,
+ struct ocfs2_xattr_entry *entry)
+{
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data;
+
+ BUG_ON(!(OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_XATTR_FL));
+
+ loc->xl_inode = inode;
+ loc->xl_ops = &ocfs2_xa_block_loc_ops;
+ loc->xl_storage = bh;
+ loc->xl_entry = entry;
+ loc->xl_size = le16_to_cpu(di->i_xattr_inline_size);
+ loc->xl_header =
+ (struct ocfs2_xattr_header *)(bh->b_data + bh->b_size -
+ loc->xl_size);
+}
+
+static void ocfs2_init_xattr_block_xa_loc(struct ocfs2_xa_loc *loc,
+ struct inode *inode,
+ struct buffer_head *bh,
+ struct ocfs2_xattr_entry *entry)
+{
+ struct ocfs2_xattr_block *xb =
+ (struct ocfs2_xattr_block *)bh->b_data;
+
+ BUG_ON(le16_to_cpu(xb->xb_flags) & OCFS2_XATTR_INDEXED);
+
+ loc->xl_inode = inode;
+ loc->xl_ops = &ocfs2_xa_block_loc_ops;
+ loc->xl_storage = bh;
+ loc->xl_header = &(xb->xb_attrs.xb_header);
+ loc->xl_entry = entry;
+ loc->xl_size = bh->b_size - offsetof(struct ocfs2_xattr_block,
+ xb_attrs.xb_header);
+}
+
+static void ocfs2_init_xattr_bucket_xa_loc(struct ocfs2_xa_loc *loc,
+ struct ocfs2_xattr_bucket *bucket,
+ struct ocfs2_xattr_entry *entry)
+{
+ loc->xl_inode = bucket->bu_inode;
+ loc->xl_ops = &ocfs2_xa_bucket_loc_ops;
+ loc->xl_storage = bucket;
+ loc->xl_header = bucket_xh(bucket);
+ loc->xl_entry = entry;
+ loc->xl_size = OCFS2_XATTR_BUCKET_SIZE;
+}
+
/*
* In xattr remove, if it is stored outside and refcounted, we may have
* the chance to split the refcount tree. So need the allocators.
@@ -2149,6 +2683,55 @@ static int ocfs2_xattr_ibody_find(struct inode *inode,
return 0;
}
+static int ocfs2_xattr_ibody_init(struct inode *inode,
+ struct buffer_head *di_bh,
+ struct ocfs2_xattr_set_ctxt *ctxt)
+{
+ int ret;
+ struct ocfs2_inode_info *oi = OCFS2_I(inode);
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
+ struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ unsigned int xattrsize = osb->s_xattr_inline_size;
+
+ if (!ocfs2_xattr_has_space_inline(inode, di)) {
+ ret = -ENOSPC;
+ goto out;
+ }
+
+ ret = ocfs2_journal_access_di(ctxt->handle, INODE_CACHE(inode), di_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
+
+ /*
+ * Adjust extent record count or inline data size
+ * to reserve space for extended attribute.
+ */
+ if (oi->ip_dyn_features & OCFS2_INLINE_DATA_FL) {
+ struct ocfs2_inline_data *idata = &di->id2.i_data;
+ le16_add_cpu(&idata->id_count, -xattrsize);
+ } else if (!(ocfs2_inode_is_fast_symlink(inode))) {
+ struct ocfs2_extent_list *el = &di->id2.i_list;
+ le16_add_cpu(&el->l_count, -(xattrsize /
+ sizeof(struct ocfs2_extent_rec)));
+ }
+ di->i_xattr_inline_size = cpu_to_le16(xattrsize);
+
+ spin_lock(&oi->ip_lock);
+ oi->ip_dyn_features |= OCFS2_INLINE_XATTR_FL|OCFS2_HAS_XATTR_FL;
+ di->i_dyn_features = cpu_to_le16(oi->ip_dyn_features);
+ spin_unlock(&oi->ip_lock);
+
+ ret = ocfs2_journal_dirty(ctxt->handle, di_bh);
+ if (ret < 0)
+ mlog_errno(ret);
+
+out:
+ return ret;
+}
+
/*
* ocfs2_xattr_ibody_set()
*
@@ -2160,9 +2743,10 @@ static int ocfs2_xattr_ibody_set(struct inode *inode,
struct ocfs2_xattr_search *xs,
struct ocfs2_xattr_set_ctxt *ctxt)
{
+ int ret;
struct ocfs2_inode_info *oi = OCFS2_I(inode);
struct ocfs2_dinode *di = (struct ocfs2_dinode *)xs->inode_bh->b_data;
- int ret;
+ struct ocfs2_xa_loc loc;
if (inode->i_sb->s_blocksize == OCFS2_MIN_BLOCKSIZE)
return -ENOSPC;
@@ -2175,8 +2759,25 @@ static int ocfs2_xattr_ibody_set(struct inode *inode,
}
}
- ret = ocfs2_xattr_set_entry(inode, xi, xs, ctxt,
- (OCFS2_INLINE_XATTR_FL | OCFS2_HAS_XATTR_FL));
+ if (!(oi->ip_dyn_features & OCFS2_INLINE_XATTR_FL)) {
+ ret = ocfs2_xattr_ibody_init(inode, xs->inode_bh, ctxt);
+ if (ret) {
+ if (ret != -ENOSPC)
+ mlog_errno(ret);
+ goto out;
+ }
+ }
+
+ ocfs2_init_dinode_xa_loc(&loc, inode, xs->inode_bh,
+ xs->not_found ? NULL : xs->here);
+ ret = ocfs2_xa_set(&loc, xi, ctxt);
+ if (ret) {
+ if (ret != -ENOSPC)
+ mlog_errno(ret);
+ goto out;
+ }
+ xs->here = loc.xl_entry;
+
out:
up_write(&oi->ip_alloc_sem);
@@ -2236,12 +2837,11 @@ cleanup:
return ret;
}
-static int ocfs2_create_xattr_block(handle_t *handle,
- struct inode *inode,
+static int ocfs2_create_xattr_block(struct inode *inode,
struct buffer_head *inode_bh,
- struct ocfs2_alloc_context *meta_ac,
- struct buffer_head **ret_bh,
- int indexed)
+ struct ocfs2_xattr_set_ctxt *ctxt,
+ int indexed,
+ struct buffer_head **ret_bh)
{
int ret;
u16 suballoc_bit_start;
@@ -2252,14 +2852,14 @@ static int ocfs2_create_xattr_block(handle_t *handle,
struct buffer_head *new_bh = NULL;
struct ocfs2_xattr_block *xblk;
- ret = ocfs2_journal_access_di(handle, INODE_CACHE(inode), inode_bh,
- OCFS2_JOURNAL_ACCESS_CREATE);
+ ret = ocfs2_journal_access_di(ctxt->handle, INODE_CACHE(inode),
+ inode_bh, OCFS2_JOURNAL_ACCESS_CREATE);
if (ret < 0) {
mlog_errno(ret);
goto end;
}
- ret = ocfs2_claim_metadata(osb, handle, meta_ac, 1,
+ ret = ocfs2_claim_metadata(osb, ctxt->handle, ctxt->meta_ac, 1,
&suballoc_bit_start, &num_got,
&first_blkno);
if (ret < 0) {
@@ -2270,7 +2870,7 @@ static int ocfs2_create_xattr_block(handle_t *handle,
new_bh = sb_getblk(inode->i_sb, first_blkno);
ocfs2_set_new_buffer_uptodate(INODE_CACHE(inode), new_bh);
- ret = ocfs2_journal_access_xb(handle, INODE_CACHE(inode),
+ ret = ocfs2_journal_access_xb(ctxt->handle, INODE_CACHE(inode),
new_bh,
OCFS2_JOURNAL_ACCESS_CREATE);
if (ret < 0) {
@@ -2282,11 +2882,10 @@ static int ocfs2_create_xattr_block(handle_t *handle,
xblk = (struct ocfs2_xattr_block *)new_bh->b_data;
memset(xblk, 0, inode->i_sb->s_blocksize);
strcpy((void *)xblk, OCFS2_XATTR_BLOCK_SIGNATURE);
- xblk->xb_suballoc_slot = cpu_to_le16(osb->slot_num);
+ xblk->xb_suballoc_slot = cpu_to_le16(ctxt->meta_ac->ac_alloc_slot);
xblk->xb_suballoc_bit = cpu_to_le16(suballoc_bit_start);
xblk->xb_fs_generation = cpu_to_le32(osb->fs_generation);
xblk->xb_blkno = cpu_to_le64(first_blkno);
-
if (indexed) {
struct ocfs2_xattr_tree_root *xr = &xblk->xb_attrs.xb_root;
xr->xt_clusters = cpu_to_le32(1);
@@ -2297,14 +2896,17 @@ static int ocfs2_create_xattr_block(handle_t *handle,
xr->xt_list.l_next_free_rec = cpu_to_le16(1);
xblk->xb_flags = cpu_to_le16(OCFS2_XATTR_INDEXED);
}
+ ocfs2_journal_dirty(ctxt->handle, new_bh);
- ret = ocfs2_journal_dirty(handle, new_bh);
- if (ret < 0) {
- mlog_errno(ret);
- goto end;
- }
+ /* Add it to the inode */
di->i_xattr_loc = cpu_to_le64(first_blkno);
- ocfs2_journal_dirty(handle, inode_bh);
+
+ spin_lock(&OCFS2_I(inode)->ip_lock);
+ OCFS2_I(inode)->ip_dyn_features |= OCFS2_HAS_XATTR_FL;
+ di->i_dyn_features = cpu_to_le16(OCFS2_I(inode)->ip_dyn_features);
+ spin_unlock(&OCFS2_I(inode)->ip_lock);
+
+ ocfs2_journal_dirty(ctxt->handle, inode_bh);
*ret_bh = new_bh;
new_bh = NULL;
@@ -2326,13 +2928,13 @@ static int ocfs2_xattr_block_set(struct inode *inode,
struct ocfs2_xattr_set_ctxt *ctxt)
{
struct buffer_head *new_bh = NULL;
- handle_t *handle = ctxt->handle;
struct ocfs2_xattr_block *xblk = NULL;
int ret;
+ struct ocfs2_xa_loc loc;
if (!xs->xattr_bh) {
- ret = ocfs2_create_xattr_block(handle, inode, xs->inode_bh,
- ctxt->meta_ac, &new_bh, 0);
+ ret = ocfs2_create_xattr_block(inode, xs->inode_bh, ctxt,
+ 0, &new_bh);
if (ret) {
mlog_errno(ret);
goto end;
@@ -2348,21 +2950,25 @@ static int ocfs2_xattr_block_set(struct inode *inode,
xblk = (struct ocfs2_xattr_block *)xs->xattr_bh->b_data;
if (!(le16_to_cpu(xblk->xb_flags) & OCFS2_XATTR_INDEXED)) {
- /* Set extended attribute into external block */
- ret = ocfs2_xattr_set_entry(inode, xi, xs, ctxt,
- OCFS2_HAS_XATTR_FL);
- if (!ret || ret != -ENOSPC)
- goto end;
+ ocfs2_init_xattr_block_xa_loc(&loc, inode, xs->xattr_bh,
+ xs->not_found ? NULL : xs->here);
- ret = ocfs2_xattr_create_index_block(inode, xs, ctxt);
- if (ret)
+ ret = ocfs2_xa_set(&loc, xi, ctxt);
+ if (!ret)
+ xs->here = loc.xl_entry;
+ else if (ret != -ENOSPC)
goto end;
+ else {
+ ret = ocfs2_xattr_create_index_block(inode, xs, ctxt);
+ if (ret)
+ goto end;
+ }
}
- ret = ocfs2_xattr_set_entry_index_block(inode, xi, xs, ctxt);
+ if (le16_to_cpu(xblk->xb_flags) & OCFS2_XATTR_INDEXED)
+ ret = ocfs2_xattr_set_entry_index_block(inode, xi, xs, ctxt);
end:
-
return ret;
}
@@ -2371,7 +2977,6 @@ static int ocfs2_xattr_can_be_in_inode(struct inode *inode,
struct ocfs2_xattr_info *xi,
struct ocfs2_xattr_search *xs)
{
- u64 value_size;
struct ocfs2_xattr_entry *last;
int free, i;
size_t min_offs = xs->end - xs->base;
@@ -2394,13 +2999,7 @@ static int ocfs2_xattr_can_be_in_inode(struct inode *inode,
BUG_ON(!xs->not_found);
- if (xi->value_len > OCFS2_XATTR_INLINE_SIZE)
- value_size = OCFS2_XATTR_ROOT_SIZE;
- else
- value_size = OCFS2_XATTR_SIZE(xi->value_len);
-
- if (free >= sizeof(struct ocfs2_xattr_entry) +
- OCFS2_XATTR_SIZE(strlen(xi->name)) + value_size)
+ if (free >= (sizeof(struct ocfs2_xattr_entry) + namevalue_size_xi(xi)))
return 1;
return 0;
@@ -2424,7 +3023,7 @@ static int ocfs2_calc_xattr_set_need(struct inode *inode,
char *base = NULL;
int name_offset, name_len = 0;
u32 new_clusters = ocfs2_clusters_for_bytes(inode->i_sb,
- xi->value_len);
+ xi->xi_value_len);
u64 value_size;
/*
@@ -2432,14 +3031,14 @@ static int ocfs2_calc_xattr_set_need(struct inode *inode,
* No matter whether we replace an old one or add a new one,
* we need this for writing.
*/
- if (xi->value_len > OCFS2_XATTR_INLINE_SIZE)
+ if (xi->xi_value_len > OCFS2_XATTR_INLINE_SIZE)
credits += new_clusters *
ocfs2_clusters_to_blocks(inode->i_sb, 1);
if (xis->not_found && xbs->not_found) {
credits += ocfs2_blocks_per_xattr_bucket(inode->i_sb);
- if (xi->value_len > OCFS2_XATTR_INLINE_SIZE) {
+ if (xi->xi_value_len > OCFS2_XATTR_INLINE_SIZE) {
clusters_add += new_clusters;
credits += ocfs2_calc_extend_credits(inode->i_sb,
&def_xv.xv.xr_list,
@@ -2484,7 +3083,7 @@ static int ocfs2_calc_xattr_set_need(struct inode *inode,
* The credits for removing the value tree will be extended
* by ocfs2_remove_extent itself.
*/
- if (!xi->value) {
+ if (!xi->xi_value) {
if (!ocfs2_xattr_is_local(xe))
credits += ocfs2_remove_extent_credits(inode->i_sb);
@@ -2514,7 +3113,7 @@ static int ocfs2_calc_xattr_set_need(struct inode *inode,
}
}
- if (xi->value_len > OCFS2_XATTR_INLINE_SIZE) {
+ if (xi->xi_value_len > OCFS2_XATTR_INLINE_SIZE) {
/* the new values will be stored outside. */
u32 old_clusters = 0;
@@ -2547,9 +3146,10 @@ static int ocfs2_calc_xattr_set_need(struct inode *inode,
* value, we don't need any allocation, otherwise we have
* to guess metadata allocation.
*/
- if ((ocfs2_xattr_is_local(xe) && value_size >= xi->value_len) ||
+ if ((ocfs2_xattr_is_local(xe) &&
+ (value_size >= xi->xi_value_len)) ||
(!ocfs2_xattr_is_local(xe) &&
- OCFS2_XATTR_ROOT_SIZE >= xi->value_len))
+ OCFS2_XATTR_ROOT_SIZE >= xi->xi_value_len))
goto out;
}
@@ -2639,7 +3239,7 @@ static int ocfs2_init_xattr_set_ctxt(struct inode *inode,
meta_add += extra_meta;
mlog(0, "Set xattr %s, reserve meta blocks = %d, clusters = %d, "
- "credits = %d\n", xi->name, meta_add, clusters_add, *credits);
+ "credits = %d\n", xi->xi_name, meta_add, clusters_add, *credits);
if (meta_add) {
ret = ocfs2_reserve_new_metadata_blocks(osb, meta_add,
@@ -2679,7 +3279,7 @@ static int __ocfs2_xattr_set_handle(struct inode *inode,
{
int ret = 0, credits, old_found;
- if (!xi->value) {
+ if (!xi->xi_value) {
/* Remove existing extended attribute */
if (!xis->not_found)
ret = ocfs2_xattr_ibody_set(inode, xi, xis, ctxt);
@@ -2693,8 +3293,8 @@ static int __ocfs2_xattr_set_handle(struct inode *inode,
* If succeed and that extended attribute existing in
* external block, then we will remove it.
*/
- xi->value = NULL;
- xi->value_len = 0;
+ xi->xi_value = NULL;
+ xi->xi_value_len = 0;
old_found = xis->not_found;
xis->not_found = -ENODATA;
@@ -2722,8 +3322,8 @@ static int __ocfs2_xattr_set_handle(struct inode *inode,
} else if (ret == -ENOSPC) {
if (di->i_xattr_loc && !xbs->xattr_bh) {
ret = ocfs2_xattr_block_find(inode,
- xi->name_index,
- xi->name, xbs);
+ xi->xi_name_index,
+ xi->xi_name, xbs);
if (ret)
goto out;
@@ -2762,8 +3362,8 @@ static int __ocfs2_xattr_set_handle(struct inode *inode,
* If succeed and that extended attribute
* existing in inode, we will remove it.
*/
- xi->value = NULL;
- xi->value_len = 0;
+ xi->xi_value = NULL;
+ xi->xi_value_len = 0;
xbs->not_found = -ENODATA;
ret = ocfs2_calc_xattr_set_need(inode,
di,
@@ -2829,10 +3429,11 @@ int ocfs2_xattr_set_handle(handle_t *handle,
int ret;
struct ocfs2_xattr_info xi = {
- .name_index = name_index,
- .name = name,
- .value = value,
- .value_len = value_len,
+ .xi_name_index = name_index,
+ .xi_name = name,
+ .xi_name_len = strlen(name),
+ .xi_value = value,
+ .xi_value_len = value_len,
};
struct ocfs2_xattr_search xis = {
@@ -2912,10 +3513,11 @@ int ocfs2_xattr_set(struct inode *inode,
struct ocfs2_refcount_tree *ref_tree = NULL;
struct ocfs2_xattr_info xi = {
- .name_index = name_index,
- .name = name,
- .value = value,
- .value_len = value_len,
+ .xi_name_index = name_index,
+ .xi_name = name,
+ .xi_name_len = strlen(name),
+ .xi_value = value,
+ .xi_value_len = value_len,
};
struct ocfs2_xattr_search xis = {
@@ -3759,7 +4361,7 @@ static int ocfs2_defrag_xattr_bucket(struct inode *inode,
struct ocfs2_xattr_bucket *bucket)
{
int ret, i;
- size_t end, offset, len, value_len;
+ size_t end, offset, len;
struct ocfs2_xattr_header *xh;
char *entries, *buf, *bucket_buf = NULL;
u64 blkno = bucket_blkno(bucket);
@@ -3813,12 +4415,7 @@ static int ocfs2_defrag_xattr_bucket(struct inode *inode,
end = OCFS2_XATTR_BUCKET_SIZE;
for (i = 0; i < le16_to_cpu(xh->xh_count); i++, xe++) {
offset = le16_to_cpu(xe->xe_name_offset);
- if (ocfs2_xattr_is_local(xe))
- value_len = OCFS2_XATTR_SIZE(
- le64_to_cpu(xe->xe_value_size));
- else
- value_len = OCFS2_XATTR_ROOT_SIZE;
- len = OCFS2_XATTR_SIZE(xe->xe_name_len) + value_len;
+ len = namevalue_size_xe(xe);
/*
* We must make sure that the name/value pair
@@ -4007,7 +4604,7 @@ static int ocfs2_divide_xattr_bucket(struct inode *inode,
int new_bucket_head)
{
int ret, i;
- int count, start, len, name_value_len = 0, xe_len, name_offset = 0;
+ int count, start, len, name_value_len = 0, name_offset = 0;
struct ocfs2_xattr_bucket *s_bucket = NULL, *t_bucket = NULL;
struct ocfs2_xattr_header *xh;
struct ocfs2_xattr_entry *xe;
@@ -4098,13 +4695,7 @@ static int ocfs2_divide_xattr_bucket(struct inode *inode,
name_value_len = 0;
for (i = 0; i < start; i++) {
xe = &xh->xh_entries[i];
- xe_len = OCFS2_XATTR_SIZE(xe->xe_name_len);
- if (ocfs2_xattr_is_local(xe))
- xe_len +=
- OCFS2_XATTR_SIZE(le64_to_cpu(xe->xe_value_size));
- else
- xe_len += OCFS2_XATTR_ROOT_SIZE;
- name_value_len += xe_len;
+ name_value_len += namevalue_size_xe(xe);
if (le16_to_cpu(xe->xe_name_offset) < name_offset)
name_offset = le16_to_cpu(xe->xe_name_offset);
}
@@ -4134,12 +4725,6 @@ static int ocfs2_divide_xattr_bucket(struct inode *inode,
xh->xh_free_start = cpu_to_le16(OCFS2_XATTR_BUCKET_SIZE);
for (i = 0; i < le16_to_cpu(xh->xh_count); i++) {
xe = &xh->xh_entries[i];
- xe_len = OCFS2_XATTR_SIZE(xe->xe_name_len);
- if (ocfs2_xattr_is_local(xe))
- xe_len +=
- OCFS2_XATTR_SIZE(le64_to_cpu(xe->xe_value_size));
- else
- xe_len += OCFS2_XATTR_ROOT_SIZE;
if (le16_to_cpu(xe->xe_name_offset) <
le16_to_cpu(xh->xh_free_start))
xh->xh_free_start = xe->xe_name_offset;
@@ -4751,195 +5336,6 @@ static inline char *ocfs2_xattr_bucket_get_val(struct inode *inode,
}
/*
- * Handle the normal xattr set, including replace, delete and new.
- *
- * Note: "local" indicates the real data's locality. So we can't
- * just its bucket locality by its length.
- */
-static void ocfs2_xattr_set_entry_normal(struct inode *inode,
- struct ocfs2_xattr_info *xi,
- struct ocfs2_xattr_search *xs,
- u32 name_hash,
- int local)
-{
- struct ocfs2_xattr_entry *last, *xe;
- int name_len = strlen(xi->name);
- struct ocfs2_xattr_header *xh = xs->header;
- u16 count = le16_to_cpu(xh->xh_count), start;
- size_t blocksize = inode->i_sb->s_blocksize;
- char *val;
- size_t offs, size, new_size;
-
- last = &xh->xh_entries[count];
- if (!xs->not_found) {
- xe = xs->here;
- offs = le16_to_cpu(xe->xe_name_offset);
- if (ocfs2_xattr_is_local(xe))
- size = OCFS2_XATTR_SIZE(name_len) +
- OCFS2_XATTR_SIZE(le64_to_cpu(xe->xe_value_size));
- else
- size = OCFS2_XATTR_SIZE(name_len) +
- OCFS2_XATTR_SIZE(OCFS2_XATTR_ROOT_SIZE);
-
- /*
- * If the new value will be stored outside, xi->value has been
- * initalized as an empty ocfs2_xattr_value_root, and the same
- * goes with xi->value_len, so we can set new_size safely here.
- * See ocfs2_xattr_set_in_bucket.
- */
- new_size = OCFS2_XATTR_SIZE(name_len) +
- OCFS2_XATTR_SIZE(xi->value_len);
-
- le16_add_cpu(&xh->xh_name_value_len, -size);
- if (xi->value) {
- if (new_size > size)
- goto set_new_name_value;
-
- /* Now replace the old value with new one. */
- if (local)
- xe->xe_value_size = cpu_to_le64(xi->value_len);
- else
- xe->xe_value_size = 0;
-
- val = ocfs2_xattr_bucket_get_val(inode,
- xs->bucket, offs);
- memset(val + OCFS2_XATTR_SIZE(name_len), 0,
- size - OCFS2_XATTR_SIZE(name_len));
- if (OCFS2_XATTR_SIZE(xi->value_len) > 0)
- memcpy(val + OCFS2_XATTR_SIZE(name_len),
- xi->value, xi->value_len);
-
- le16_add_cpu(&xh->xh_name_value_len, new_size);
- ocfs2_xattr_set_local(xe, local);
- return;
- } else {
- /*
- * Remove the old entry if there is more than one.
- * We don't remove the last entry so that we can
- * use it to indicate the hash value of the empty
- * bucket.
- */
- last -= 1;
- le16_add_cpu(&xh->xh_count, -1);
- if (xh->xh_count) {
- memmove(xe, xe + 1,
- (void *)last - (void *)xe);
- memset(last, 0,
- sizeof(struct ocfs2_xattr_entry));
- } else
- xh->xh_free_start =
- cpu_to_le16(OCFS2_XATTR_BUCKET_SIZE);
-
- return;
- }
- } else {
- /* find a new entry for insert. */
- int low = 0, high = count - 1, tmp;
- struct ocfs2_xattr_entry *tmp_xe;
-
- while (low <= high && count) {
- tmp = (low + high) / 2;
- tmp_xe = &xh->xh_entries[tmp];
-
- if (name_hash > le32_to_cpu(tmp_xe->xe_name_hash))
- low = tmp + 1;
- else if (name_hash <
- le32_to_cpu(tmp_xe->xe_name_hash))
- high = tmp - 1;
- else {
- low = tmp;
- break;
- }
- }
-
- xe = &xh->xh_entries[low];
- if (low != count)
- memmove(xe + 1, xe, (void *)last - (void *)xe);
-
- le16_add_cpu(&xh->xh_count, 1);
- memset(xe, 0, sizeof(struct ocfs2_xattr_entry));
- xe->xe_name_hash = cpu_to_le32(name_hash);
- xe->xe_name_len = name_len;
- ocfs2_xattr_set_type(xe, xi->name_index);
- }
-
-set_new_name_value:
- /* Insert the new name+value. */
- size = OCFS2_XATTR_SIZE(name_len) + OCFS2_XATTR_SIZE(xi->value_len);
-
- /*
- * We must make sure that the name/value pair
- * exists in the same block.
- */
- offs = le16_to_cpu(xh->xh_free_start);
- start = offs - size;
-
- if (start >> inode->i_sb->s_blocksize_bits !=
- (offs - 1) >> inode->i_sb->s_blocksize_bits) {
- offs = offs - offs % blocksize;
- xh->xh_free_start = cpu_to_le16(offs);
- }
-
- val = ocfs2_xattr_bucket_get_val(inode, xs->bucket, offs - size);
- xe->xe_name_offset = cpu_to_le16(offs - size);
-
- memset(val, 0, size);
- memcpy(val, xi->name, name_len);
- memcpy(val + OCFS2_XATTR_SIZE(name_len), xi->value, xi->value_len);
-
- xe->xe_value_size = cpu_to_le64(xi->value_len);
- ocfs2_xattr_set_local(xe, local);
- xs->here = xe;
- le16_add_cpu(&xh->xh_free_start, -size);
- le16_add_cpu(&xh->xh_name_value_len, size);
-
- return;
-}
-
-/*
- * Set the xattr entry in the specified bucket.
- * The bucket is indicated by xs->bucket and it should have the enough
- * space for the xattr insertion.
- */
-static int ocfs2_xattr_set_entry_in_bucket(struct inode *inode,
- handle_t *handle,
- struct ocfs2_xattr_info *xi,
- struct ocfs2_xattr_search *xs,
- u32 name_hash,
- int local)
-{
- int ret;
- u64 blkno;
-
- mlog(0, "Set xattr entry len = %lu index = %d in bucket %llu\n",
- (unsigned long)xi->value_len, xi->name_index,
- (unsigned long long)bucket_blkno(xs->bucket));
-
- if (!xs->bucket->bu_bhs[1]) {
- blkno = bucket_blkno(xs->bucket);
- ocfs2_xattr_bucket_relse(xs->bucket);
- ret = ocfs2_read_xattr_bucket(xs->bucket, blkno);
- if (ret) {
- mlog_errno(ret);
- goto out;
- }
- }
-
- ret = ocfs2_xattr_bucket_journal_access(handle, xs->bucket,
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (ret < 0) {
- mlog_errno(ret);
- goto out;
- }
-
- ocfs2_xattr_set_entry_normal(inode, xi, xs, name_hash, local);
- ocfs2_xattr_bucket_journal_dirty(handle, xs->bucket);
-
-out:
- return ret;
-}
-
-/*
* Truncate the specified xe_off entry in xattr bucket.
* bucket is indicated by header_bh and len is the new length.
* Both the ocfs2_xattr_value_root and the entry will be updated here.
@@ -5009,66 +5405,6 @@ out:
return ret;
}
-static int ocfs2_xattr_bucket_value_truncate_xs(struct inode *inode,
- struct ocfs2_xattr_search *xs,
- int len,
- struct ocfs2_xattr_set_ctxt *ctxt)
-{
- int ret, offset;
- struct ocfs2_xattr_entry *xe = xs->here;
- struct ocfs2_xattr_header *xh = (struct ocfs2_xattr_header *)xs->base;
-
- BUG_ON(!xs->bucket->bu_bhs[0] || !xe || ocfs2_xattr_is_local(xe));
-
- offset = xe - xh->xh_entries;
- ret = ocfs2_xattr_bucket_value_truncate(inode, xs->bucket,
- offset, len, ctxt);
- if (ret)
- mlog_errno(ret);
-
- return ret;
-}
-
-static int ocfs2_xattr_bucket_set_value_outside(struct inode *inode,
- handle_t *handle,
- struct ocfs2_xattr_search *xs,
- char *val,
- int value_len)
-{
- int ret, offset, block_off;
- struct ocfs2_xattr_value_root *xv;
- struct ocfs2_xattr_entry *xe = xs->here;
- struct ocfs2_xattr_header *xh = bucket_xh(xs->bucket);
- void *base;
- struct ocfs2_xattr_value_buf vb = {
- .vb_access = ocfs2_journal_access,
- };
-
- BUG_ON(!xs->base || !xe || ocfs2_xattr_is_local(xe));
-
- ret = ocfs2_xattr_bucket_get_name_value(inode->i_sb, xh,
- xe - xh->xh_entries,
- &block_off,
- &offset);
- if (ret) {
- mlog_errno(ret);
- goto out;
- }
-
- base = bucket_block(xs->bucket, block_off);
- xv = (struct ocfs2_xattr_value_root *)(base + offset +
- OCFS2_XATTR_SIZE(xe->xe_name_len));
-
- vb.vb_xv = xv;
- vb.vb_bh = xs->bucket->bu_bhs[block_off];
- ret = __ocfs2_xattr_set_value_outside(inode, handle,
- &vb, val, value_len);
- if (ret)
- mlog_errno(ret);
-out:
- return ret;
-}
-
static int ocfs2_rm_xattr_cluster(struct inode *inode,
struct buffer_head *root_bh,
u64 blkno,
@@ -5167,128 +5503,6 @@ out:
return ret;
}
-static void ocfs2_xattr_bucket_remove_xs(struct inode *inode,
- handle_t *handle,
- struct ocfs2_xattr_search *xs)
-{
- struct ocfs2_xattr_header *xh = bucket_xh(xs->bucket);
- struct ocfs2_xattr_entry *last = &xh->xh_entries[
- le16_to_cpu(xh->xh_count) - 1];
- int ret = 0;
-
- ret = ocfs2_xattr_bucket_journal_access(handle, xs->bucket,
- OCFS2_JOURNAL_ACCESS_WRITE);
- if (ret) {
- mlog_errno(ret);
- return;
- }
-
- /* Remove the old entry. */
- memmove(xs->here, xs->here + 1,
- (void *)last - (void *)xs->here);
- memset(last, 0, sizeof(struct ocfs2_xattr_entry));
- le16_add_cpu(&xh->xh_count, -1);
-
- ocfs2_xattr_bucket_journal_dirty(handle, xs->bucket);
-}
-
-/*
- * Set the xattr name/value in the bucket specified in xs.
- *
- * As the new value in xi may be stored in the bucket or in an outside cluster,
- * we divide the whole process into 3 steps:
- * 1. insert name/value in the bucket(ocfs2_xattr_set_entry_in_bucket)
- * 2. truncate of the outside cluster(ocfs2_xattr_bucket_value_truncate_xs)
- * 3. Set the value to the outside cluster(ocfs2_xattr_bucket_set_value_outside)
- * 4. If the clusters for the new outside value can't be allocated, we need
- * to free the xattr we allocated in set.
- */
-static int ocfs2_xattr_set_in_bucket(struct inode *inode,
- struct ocfs2_xattr_info *xi,
- struct ocfs2_xattr_search *xs,
- struct ocfs2_xattr_set_ctxt *ctxt)
-{
- int ret, local = 1;
- size_t value_len;
- char *val = (char *)xi->value;
- struct ocfs2_xattr_entry *xe = xs->here;
- u32 name_hash = ocfs2_xattr_name_hash(inode, xi->name,
- strlen(xi->name));
-
- if (!xs->not_found && !ocfs2_xattr_is_local(xe)) {
- /*
- * We need to truncate the xattr storage first.
- *
- * If both the old and new value are stored to
- * outside block, we only need to truncate
- * the storage and then set the value outside.
- *
- * If the new value should be stored within block,
- * we should free all the outside block first and
- * the modification to the xattr block will be done
- * by following steps.
- */
- if (xi->value_len > OCFS2_XATTR_INLINE_SIZE)
- value_len = xi->value_len;
- else
- value_len = 0;
-
- ret = ocfs2_xattr_bucket_value_truncate_xs(inode, xs,
- value_len,
- ctxt);
- if (ret)
- goto out;
-
- if (value_len)
- goto set_value_outside;
- }
-
- value_len = xi->value_len;
- /* So we have to handle the inside block change now. */
- if (value_len > OCFS2_XATTR_INLINE_SIZE) {
- /*
- * If the new value will be stored outside of block,
- * initalize a new empty value root and insert it first.
- */
- local = 0;
- xi->value = &def_xv;
- xi->value_len = OCFS2_XATTR_ROOT_SIZE;
- }
-
- ret = ocfs2_xattr_set_entry_in_bucket(inode, ctxt->handle, xi, xs,
- name_hash, local);
- if (ret) {
- mlog_errno(ret);
- goto out;
- }
-
- if (value_len <= OCFS2_XATTR_INLINE_SIZE)
- goto out;
-
- /* allocate the space now for the outside block storage. */
- ret = ocfs2_xattr_bucket_value_truncate_xs(inode, xs,
- value_len, ctxt);
- if (ret) {
- mlog_errno(ret);
-
- if (xs->not_found) {
- /*
- * We can't allocate enough clusters for outside
- * storage and we have allocated xattr already,
- * so need to remove it.
- */
- ocfs2_xattr_bucket_remove_xs(inode, ctxt->handle, xs);
- }
- goto out;
- }
-
-set_value_outside:
- ret = ocfs2_xattr_bucket_set_value_outside(inode, ctxt->handle,
- xs, val, value_len);
-out:
- return ret;
-}
-
/*
* check whether the xattr bucket is filled up with the same hash value.
* If we want to insert the xattr with the same hash, return -ENOSPC.
@@ -5317,156 +5531,116 @@ static int ocfs2_check_xattr_bucket_collision(struct inode *inode,
return 0;
}
-static int ocfs2_xattr_set_entry_index_block(struct inode *inode,
- struct ocfs2_xattr_info *xi,
- struct ocfs2_xattr_search *xs,
- struct ocfs2_xattr_set_ctxt *ctxt)
+/*
+ * Try to set the entry in the current bucket. If we fail, the caller
+ * will handle getting us another bucket.
+ */
+static int ocfs2_xattr_set_entry_bucket(struct inode *inode,
+ struct ocfs2_xattr_info *xi,
+ struct ocfs2_xattr_search *xs,
+ struct ocfs2_xattr_set_ctxt *ctxt)
{
- struct ocfs2_xattr_header *xh;
- struct ocfs2_xattr_entry *xe;
- u16 count, header_size, xh_free_start;
- int free, max_free, need, old;
- size_t value_size = 0, name_len = strlen(xi->name);
- size_t blocksize = inode->i_sb->s_blocksize;
- int ret, allocation = 0;
-
- mlog_entry("Set xattr %s in xattr index block\n", xi->name);
-
-try_again:
- xh = xs->header;
- count = le16_to_cpu(xh->xh_count);
- xh_free_start = le16_to_cpu(xh->xh_free_start);
- header_size = sizeof(struct ocfs2_xattr_header) +
- count * sizeof(struct ocfs2_xattr_entry);
- max_free = OCFS2_XATTR_BUCKET_SIZE - header_size -
- le16_to_cpu(xh->xh_name_value_len) - OCFS2_XATTR_HEADER_GAP;
-
- mlog_bug_on_msg(header_size > blocksize, "bucket %llu has header size "
- "of %u which exceed block size\n",
- (unsigned long long)bucket_blkno(xs->bucket),
- header_size);
+ int ret;
+ struct ocfs2_xa_loc loc;
- if (xi->value && xi->value_len > OCFS2_XATTR_INLINE_SIZE)
- value_size = OCFS2_XATTR_ROOT_SIZE;
- else if (xi->value)
- value_size = OCFS2_XATTR_SIZE(xi->value_len);
+ mlog_entry("Set xattr %s in xattr bucket\n", xi->xi_name);
- if (xs->not_found)
- need = sizeof(struct ocfs2_xattr_entry) +
- OCFS2_XATTR_SIZE(name_len) + value_size;
- else {
- need = value_size + OCFS2_XATTR_SIZE(name_len);
+ ocfs2_init_xattr_bucket_xa_loc(&loc, xs->bucket,
+ xs->not_found ? NULL : xs->here);
+ ret = ocfs2_xa_set(&loc, xi, ctxt);
+ if (!ret) {
+ xs->here = loc.xl_entry;
+ goto out;
+ }
+ if (ret != -ENOSPC) {
+ mlog_errno(ret);
+ goto out;
+ }
- /*
- * We only replace the old value if the new length is smaller
- * than the old one. Otherwise we will allocate new space in the
- * bucket to store it.
- */
- xe = xs->here;
- if (ocfs2_xattr_is_local(xe))
- old = OCFS2_XATTR_SIZE(le64_to_cpu(xe->xe_value_size));
- else
- old = OCFS2_XATTR_SIZE(OCFS2_XATTR_ROOT_SIZE);
+ /* Ok, we need space. Let's try defragmenting the bucket. */
+ ret = ocfs2_defrag_xattr_bucket(inode, ctxt->handle,
+ xs->bucket);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
- if (old >= value_size)
- need = 0;
+ ret = ocfs2_xa_set(&loc, xi, ctxt);
+ if (!ret) {
+ xs->here = loc.xl_entry;
+ goto out;
}
+ if (ret != -ENOSPC)
+ mlog_errno(ret);
- free = xh_free_start - header_size - OCFS2_XATTR_HEADER_GAP;
- /*
- * We need to make sure the new name/value pair
- * can exist in the same block.
- */
- if (xh_free_start % blocksize < need)
- free -= xh_free_start % blocksize;
-
- mlog(0, "xs->not_found = %d, in xattr bucket %llu: free = %d, "
- "need = %d, max_free = %d, xh_free_start = %u, xh_name_value_len ="
- " %u\n", xs->not_found,
- (unsigned long long)bucket_blkno(xs->bucket),
- free, need, max_free, le16_to_cpu(xh->xh_free_start),
- le16_to_cpu(xh->xh_name_value_len));
-
- if (free < need ||
- (xs->not_found &&
- count == ocfs2_xattr_max_xe_in_bucket(inode->i_sb))) {
- if (need <= max_free &&
- count < ocfs2_xattr_max_xe_in_bucket(inode->i_sb)) {
- /*
- * We can create the space by defragment. Since only the
- * name/value will be moved, the xe shouldn't be changed
- * in xs.
- */
- ret = ocfs2_defrag_xattr_bucket(inode, ctxt->handle,
- xs->bucket);
- if (ret) {
- mlog_errno(ret);
- goto out;
- }
- xh_free_start = le16_to_cpu(xh->xh_free_start);
- free = xh_free_start - header_size
- - OCFS2_XATTR_HEADER_GAP;
- if (xh_free_start % blocksize < need)
- free -= xh_free_start % blocksize;
+out:
+ mlog_exit(ret);
+ return ret;
+}
- if (free >= need)
- goto xattr_set;
+static int ocfs2_xattr_set_entry_index_block(struct inode *inode,
+ struct ocfs2_xattr_info *xi,
+ struct ocfs2_xattr_search *xs,
+ struct ocfs2_xattr_set_ctxt *ctxt)
+{
+ int ret;
- mlog(0, "Can't get enough space for xattr insert by "
- "defragment. Need %u bytes, but we have %d, so "
- "allocate new bucket for it.\n", need, free);
- }
+ mlog_entry("Set xattr %s in xattr index block\n", xi->xi_name);
- /*
- * We have to add new buckets or clusters and one
- * allocation should leave us enough space for insert.
- */
- BUG_ON(allocation);
+ ret = ocfs2_xattr_set_entry_bucket(inode, xi, xs, ctxt);
+ if (!ret)
+ goto out;
+ if (ret != -ENOSPC) {
+ mlog_errno(ret);
+ goto out;
+ }
- /*
- * We do not allow for overlapping ranges between buckets. And
- * the maximum number of collisions we will allow for then is
- * one bucket's worth, so check it here whether we need to
- * add a new bucket for the insert.
- */
- ret = ocfs2_check_xattr_bucket_collision(inode,
- xs->bucket,
- xi->name);
- if (ret) {
- mlog_errno(ret);
- goto out;
- }
+ /* Ack, need more space. Let's try to get another bucket! */
- ret = ocfs2_add_new_xattr_bucket(inode,
- xs->xattr_bh,
+ /*
+ * We do not allow for overlapping ranges between buckets. And
+ * the maximum number of collisions we will allow for then is
+ * one bucket's worth, so check it here whether we need to
+ * add a new bucket for the insert.
+ */
+ ret = ocfs2_check_xattr_bucket_collision(inode,
xs->bucket,
- ctxt);
- if (ret) {
- mlog_errno(ret);
- goto out;
- }
+ xi->xi_name);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
+ }
- /*
- * ocfs2_add_new_xattr_bucket() will have updated
- * xs->bucket if it moved, but it will not have updated
- * any of the other search fields. Thus, we drop it and
- * re-search. Everything should be cached, so it'll be
- * quick.
- */
- ocfs2_xattr_bucket_relse(xs->bucket);
- ret = ocfs2_xattr_index_block_find(inode, xs->xattr_bh,
- xi->name_index,
- xi->name, xs);
- if (ret && ret != -ENODATA)
- goto out;
- xs->not_found = ret;
- allocation = 1;
- goto try_again;
+ ret = ocfs2_add_new_xattr_bucket(inode,
+ xs->xattr_bh,
+ xs->bucket,
+ ctxt);
+ if (ret) {
+ mlog_errno(ret);
+ goto out;
}
-xattr_set:
- ret = ocfs2_xattr_set_in_bucket(inode, xi, xs, ctxt);
+ /*
+ * ocfs2_add_new_xattr_bucket() will have updated
+ * xs->bucket if it moved, but it will not have updated
+ * any of the other search fields. Thus, we drop it and
+ * re-search. Everything should be cached, so it'll be
+ * quick.
+ */
+ ocfs2_xattr_bucket_relse(xs->bucket);
+ ret = ocfs2_xattr_index_block_find(inode, xs->xattr_bh,
+ xi->xi_name_index,
+ xi->xi_name, xs);
+ if (ret && ret != -ENODATA)
+ goto out;
+ xs->not_found = ret;
+
+ /* Ok, we have a new bucket, let's try again */
+ ret = ocfs2_xattr_set_entry_bucket(inode, xi, xs, ctxt);
+ if (ret && (ret != -ENOSPC))
+ mlog_errno(ret);
+
out:
mlog_exit(ret);
return ret;
@@ -5678,7 +5852,7 @@ static int ocfs2_prepare_refcount_xattr(struct inode *inode,
* refcount tree, and make the original extent become 3. So we will need
* 2 * cluster more extent recs at most.
*/
- if (!xi->value || xi->value_len <= OCFS2_XATTR_INLINE_SIZE) {
+ if (!xi->xi_value || xi->xi_value_len <= OCFS2_XATTR_INLINE_SIZE) {
ret = ocfs2_refcounted_xattr_delete_need(inode,
&(*ref_tree)->rf_ci,
@@ -6354,9 +6528,11 @@ static int ocfs2_create_empty_xattr_block(struct inode *inode,
int indexed)
{
int ret;
- handle_t *handle;
struct ocfs2_alloc_context *meta_ac;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
+ struct ocfs2_xattr_set_ctxt ctxt = {
+ .meta_ac = meta_ac,
+ };
ret = ocfs2_reserve_new_metadata_blocks(osb, 1, &meta_ac);
if (ret < 0) {
@@ -6364,21 +6540,21 @@ static int ocfs2_create_empty_xattr_block(struct inode *inode,
return ret;
}
- handle = ocfs2_start_trans(osb, OCFS2_XATTR_BLOCK_CREATE_CREDITS);
- if (IS_ERR(handle)) {
- ret = PTR_ERR(handle);
+ ctxt.handle = ocfs2_start_trans(osb, OCFS2_XATTR_BLOCK_CREATE_CREDITS);
+ if (IS_ERR(ctxt.handle)) {
+ ret = PTR_ERR(ctxt.handle);
mlog_errno(ret);
goto out;
}
mlog(0, "create new xattr block for inode %llu, index = %d\n",
(unsigned long long)fe_bh->b_blocknr, indexed);
- ret = ocfs2_create_xattr_block(handle, inode, fe_bh,
- meta_ac, ret_bh, indexed);
+ ret = ocfs2_create_xattr_block(inode, fe_bh, &ctxt, indexed,
+ ret_bh);
if (ret)
mlog_errno(ret);
- ocfs2_commit_trans(osb, handle);
+ ocfs2_commit_trans(osb, ctxt.handle);
out:
ocfs2_free_alloc_context(meta_ac);
return ret;
diff --git a/fs/omfs/inode.c b/fs/omfs/inode.c
index f3b7c1541f3a..75d9b5ba1d45 100644
--- a/fs/omfs/inode.c
+++ b/fs/omfs/inode.c
@@ -11,6 +11,7 @@
#include <linux/parser.h>
#include <linux/buffer_head.h>
#include <linux/vmalloc.h>
+#include <linux/writeback.h>
#include <linux/crc-itu-t.h>
#include "omfs.h"
@@ -89,7 +90,7 @@ static void omfs_update_checksums(struct omfs_inode *oi)
oi->i_head.h_check_xor = xor;
}
-static int omfs_write_inode(struct inode *inode, int wait)
+static int __omfs_write_inode(struct inode *inode, int wait)
{
struct omfs_inode *oi;
struct omfs_sb_info *sbi = OMFS_SB(inode->i_sb);
@@ -162,9 +163,14 @@ out:
return ret;
}
+static int omfs_write_inode(struct inode *inode, struct writeback_control *wbc)
+{
+ return __omfs_write_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
+}
+
int omfs_sync_inode(struct inode *inode)
{
- return omfs_write_inode(inode, 1);
+ return __omfs_write_inode(inode, 1);
}
/*
diff --git a/fs/open.c b/fs/open.c
index 040cef72bc00..e0b2d88b0380 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -271,7 +271,7 @@ static long do_sys_truncate(const char __user *pathname, loff_t length)
* Make sure that there are no leases. get_write_access() protects
* against the truncate racing with a lease-granting setlease().
*/
- error = break_lease(inode, FMODE_WRITE);
+ error = break_lease(inode, O_WRONLY);
if (error)
goto put_write_and_out;
diff --git a/fs/partitions/check.c b/fs/partitions/check.c
index 64bc8998ac9a..e8865c11777f 100644
--- a/fs/partitions/check.c
+++ b/fs/partitions/check.c
@@ -412,9 +412,10 @@ struct hd_struct *add_partition(struct gendisk *disk, int partno,
pdev = part_to_dev(p);
p->start_sect = start;
- p->alignment_offset = queue_sector_alignment_offset(disk->queue, start);
- p->discard_alignment = queue_sector_discard_alignment(disk->queue,
- start);
+ p->alignment_offset =
+ queue_limit_alignment_offset(&disk->queue->limits, start);
+ p->discard_alignment =
+ queue_limit_discard_alignment(&disk->queue->limits, start);
p->nr_sects = len;
p->partno = partno;
p->policy = get_disk_ro(disk);
diff --git a/fs/pnode.c b/fs/pnode.c
index 8d5f392ec3d3..5cc564a83149 100644
--- a/fs/pnode.c
+++ b/fs/pnode.c
@@ -86,7 +86,7 @@ static int do_make_slave(struct vfsmount *mnt)
/*
* slave 'mnt' to a peer mount that has the
- * same root dentry. If none is available than
+ * same root dentry. If none is available then
* slave it to anything that is available.
*/
while ((peer_mnt = next_peer(peer_mnt)) != mnt &&
@@ -147,6 +147,11 @@ void change_mnt_propagation(struct vfsmount *mnt, int type)
* get the next mount in the propagation tree.
* @m: the mount seen last
* @origin: the original mount from where the tree walk initiated
+ *
+ * Note that peer groups form contiguous segments of slave lists.
+ * We rely on that in get_source() to be able to find out if
+ * vfsmount found while iterating with propagation_next() is
+ * a peer of one we'd found earlier.
*/
static struct vfsmount *propagation_next(struct vfsmount *m,
struct vfsmount *origin)
@@ -186,10 +191,6 @@ static struct vfsmount *get_source(struct vfsmount *dest,
{
struct vfsmount *p_last_src = NULL;
struct vfsmount *p_last_dest = NULL;
- *type = CL_PROPAGATION;
-
- if (IS_MNT_SHARED(dest))
- *type |= CL_MAKE_SHARED;
while (last_dest != dest->mnt_master) {
p_last_dest = last_dest;
@@ -202,13 +203,18 @@ static struct vfsmount *get_source(struct vfsmount *dest,
do {
p_last_dest = next_peer(p_last_dest);
} while (IS_MNT_NEW(p_last_dest));
+ /* is that a peer of the earlier? */
+ if (dest == p_last_dest) {
+ *type = CL_MAKE_SHARED;
+ return p_last_src;
+ }
}
-
- if (dest != p_last_dest) {
- *type |= CL_SLAVE;
- return last_src;
- } else
- return p_last_src;
+ /* slave of the earlier, then */
+ *type = CL_SLAVE;
+ /* beginning of peer group among the slaves? */
+ if (IS_MNT_SHARED(dest))
+ *type |= CL_MAKE_SHARED;
+ return last_src;
}
/*
diff --git a/fs/pnode.h b/fs/pnode.h
index 958665d662af..1ea4ae1efcd3 100644
--- a/fs/pnode.h
+++ b/fs/pnode.h
@@ -21,12 +21,11 @@
#define CL_SLAVE 0x02
#define CL_COPY_ALL 0x04
#define CL_MAKE_SHARED 0x08
-#define CL_PROPAGATION 0x10
-#define CL_PRIVATE 0x20
+#define CL_PRIVATE 0x10
static inline void set_mnt_shared(struct vfsmount *mnt)
{
- mnt->mnt_flags &= ~MNT_PNODE_MASK;
+ mnt->mnt_flags &= ~MNT_SHARED_MASK;
mnt->mnt_flags |= MNT_SHARED;
}
diff --git a/fs/proc/array.c b/fs/proc/array.c
index 13b5d0708175..18e20feee251 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -270,7 +270,9 @@ static inline void task_sig(struct seq_file *m, struct task_struct *p)
blocked = p->blocked;
collect_sigign_sigcatch(p, &ignored, &caught);
num_threads = atomic_read(&p->signal->count);
+ rcu_read_lock(); /* FIXME: is this correct? */
qsize = atomic_read(&__task_cred(p)->user->sigpending);
+ rcu_read_unlock();
qlim = p->signal->rlim[RLIMIT_SIGPENDING].rlim_cur;
unlock_task_sighand(p, &flags);
}
diff --git a/fs/proc/base.c b/fs/proc/base.c
index e42bbd843ed1..a7310841c831 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -647,17 +647,11 @@ static int mounts_release(struct inode *inode, struct file *file)
static unsigned mounts_poll(struct file *file, poll_table *wait)
{
struct proc_mounts *p = file->private_data;
- struct mnt_namespace *ns = p->ns;
unsigned res = POLLIN | POLLRDNORM;
- poll_wait(file, &ns->poll, wait);
-
- spin_lock(&vfsmount_lock);
- if (p->event != ns->event) {
- p->event = ns->event;
+ poll_wait(file, &p->ns->poll, wait);
+ if (mnt_had_events(p))
res |= POLLERR | POLLPRI;
- }
- spin_unlock(&vfsmount_lock);
return res;
}
@@ -1095,8 +1089,12 @@ static ssize_t proc_loginuid_write(struct file * file, const char __user * buf,
if (!capable(CAP_AUDIT_CONTROL))
return -EPERM;
- if (current != pid_task(proc_pid(inode), PIDTYPE_PID))
+ rcu_read_lock();
+ if (current != pid_task(proc_pid(inode), PIDTYPE_PID)) {
+ rcu_read_unlock();
return -EPERM;
+ }
+ rcu_read_unlock();
if (count >= PAGE_SIZE)
count = PAGE_SIZE - 1;
@@ -2369,16 +2367,30 @@ static void *proc_self_follow_link(struct dentry *dentry, struct nameidata *nd)
{
struct pid_namespace *ns = dentry->d_sb->s_fs_info;
pid_t tgid = task_tgid_nr_ns(current, ns);
- char tmp[PROC_NUMBUF];
- if (!tgid)
- return ERR_PTR(-ENOENT);
- sprintf(tmp, "%d", task_tgid_nr_ns(current, ns));
- return ERR_PTR(vfs_follow_link(nd,tmp));
+ char *name = ERR_PTR(-ENOENT);
+ if (tgid) {
+ name = __getname();
+ if (!name)
+ name = ERR_PTR(-ENOMEM);
+ else
+ sprintf(name, "%d", tgid);
+ }
+ nd_set_link(nd, name);
+ return NULL;
+}
+
+static void proc_self_put_link(struct dentry *dentry, struct nameidata *nd,
+ void *cookie)
+{
+ char *s = nd_get_link(nd);
+ if (!IS_ERR(s))
+ __putname(s);
}
static const struct inode_operations proc_self_inode_operations = {
.readlink = proc_self_readlink,
.follow_link = proc_self_follow_link,
+ .put_link = proc_self_put_link,
};
/*
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 480cb1065eec..9580abeadeb3 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -662,6 +662,7 @@ struct proc_dir_entry *proc_symlink(const char *name,
}
return ent;
}
+EXPORT_SYMBOL(proc_symlink);
struct proc_dir_entry *proc_mkdir_mode(const char *name, mode_t mode,
struct proc_dir_entry *parent)
@@ -700,6 +701,7 @@ struct proc_dir_entry *proc_mkdir(const char *name,
{
return proc_mkdir_mode(name, S_IRUGO | S_IXUGO, parent);
}
+EXPORT_SYMBOL(proc_mkdir);
struct proc_dir_entry *create_proc_entry(const char *name, mode_t mode,
struct proc_dir_entry *parent)
@@ -728,6 +730,7 @@ struct proc_dir_entry *create_proc_entry(const char *name, mode_t mode,
}
return ent;
}
+EXPORT_SYMBOL(create_proc_entry);
struct proc_dir_entry *proc_create_data(const char *name, mode_t mode,
struct proc_dir_entry *parent,
@@ -762,6 +765,7 @@ out_free:
out:
return NULL;
}
+EXPORT_SYMBOL(proc_create_data);
static void free_proc_entry(struct proc_dir_entry *de)
{
@@ -853,3 +857,4 @@ continue_removing:
de->parent->name, de->name, de->subdir->name);
pde_put(de);
}
+EXPORT_SYMBOL(remove_proc_entry);
diff --git a/fs/proc/kmsg.c b/fs/proc/kmsg.c
index 7ca78346d3f0..cfe90a48a6e8 100644
--- a/fs/proc/kmsg.c
+++ b/fs/proc/kmsg.c
@@ -12,37 +12,37 @@
#include <linux/poll.h>
#include <linux/proc_fs.h>
#include <linux/fs.h>
+#include <linux/syslog.h>
#include <asm/uaccess.h>
#include <asm/io.h>
extern wait_queue_head_t log_wait;
-extern int do_syslog(int type, char __user *bug, int count);
-
static int kmsg_open(struct inode * inode, struct file * file)
{
- return do_syslog(1,NULL,0);
+ return do_syslog(SYSLOG_ACTION_OPEN, NULL, 0, SYSLOG_FROM_FILE);
}
static int kmsg_release(struct inode * inode, struct file * file)
{
- (void) do_syslog(0,NULL,0);
+ (void) do_syslog(SYSLOG_ACTION_CLOSE, NULL, 0, SYSLOG_FROM_FILE);
return 0;
}
static ssize_t kmsg_read(struct file *file, char __user *buf,
size_t count, loff_t *ppos)
{
- if ((file->f_flags & O_NONBLOCK) && !do_syslog(9, NULL, 0))
+ if ((file->f_flags & O_NONBLOCK) &&
+ !do_syslog(SYSLOG_ACTION_SIZE_UNREAD, NULL, 0, SYSLOG_FROM_FILE))
return -EAGAIN;
- return do_syslog(2, buf, count);
+ return do_syslog(SYSLOG_ACTION_READ, buf, count, SYSLOG_FROM_FILE);
}
static unsigned int kmsg_poll(struct file *file, poll_table *wait)
{
poll_wait(file, &log_wait, wait);
- if (do_syslog(9, NULL, 0))
+ if (do_syslog(SYSLOG_ACTION_SIZE_UNREAD, NULL, 0, SYSLOG_FROM_FILE))
return POLLIN | POLLRDNORM;
return 0;
}
diff --git a/fs/proc/proc_devtree.c b/fs/proc/proc_devtree.c
index 123257bb356b..f8650dce74fb 100644
--- a/fs/proc/proc_devtree.c
+++ b/fs/proc/proc_devtree.c
@@ -10,16 +10,19 @@
#include <linux/seq_file.h>
#include <linux/stat.h>
#include <linux/string.h>
+#include <linux/of.h>
+#include <linux/module.h>
#include <asm/prom.h>
#include <asm/uaccess.h>
#include "internal.h"
-#ifndef HAVE_ARCH_DEVTREE_FIXUPS
static inline void set_node_proc_entry(struct device_node *np,
struct proc_dir_entry *de)
{
-}
+#ifdef HAVE_ARCH_DEVTREE_FIXUPS
+ np->pde = de;
#endif
+}
static struct proc_dir_entry *proc_device_tree;
diff --git a/fs/proc/root.c b/fs/proc/root.c
index b080b791d9e3..757c069f2a65 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -220,9 +220,3 @@ void pid_ns_release_proc(struct pid_namespace *ns)
{
mntput(ns->proc_mnt);
}
-
-EXPORT_SYMBOL(proc_symlink);
-EXPORT_SYMBOL(proc_mkdir);
-EXPORT_SYMBOL(create_proc_entry);
-EXPORT_SYMBOL(proc_create_data);
-EXPORT_SYMBOL(remove_proc_entry);
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index 9087b10209e6..0d651f980a8d 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -1497,9 +1497,11 @@ struct inode *reiserfs_iget(struct super_block *s, const struct cpu_key *key)
args.objectid = key->on_disk_key.k_objectid;
args.dirid = key->on_disk_key.k_dir_id;
+ reiserfs_write_unlock(s);
inode = iget5_locked(s, key->on_disk_key.k_objectid,
reiserfs_find_actor, reiserfs_init_locked_inode,
(void *)(&args));
+ reiserfs_write_lock(s);
if (!inode)
return ERR_PTR(-ENOMEM);
@@ -1613,7 +1615,7 @@ int reiserfs_encode_fh(struct dentry *dentry, __u32 * data, int *lenp,
** to properly mark inodes for datasync and such, but only actually
** does something when called for a synchronous update.
*/
-int reiserfs_write_inode(struct inode *inode, int do_sync)
+int reiserfs_write_inode(struct inode *inode, struct writeback_control *wbc)
{
struct reiserfs_transaction_handle th;
int jbegin_count = 1;
@@ -1625,7 +1627,7 @@ int reiserfs_write_inode(struct inode *inode, int do_sync)
** inode needs to reach disk for safety, and they can safely be
** ignored because the altered inode has already been logged.
*/
- if (do_sync && !(current->flags & PF_MEMALLOC)) {
+ if (wbc->sync_mode == WB_SYNC_ALL && !(current->flags & PF_MEMALLOC)) {
reiserfs_write_lock(inode->i_sb);
if (!journal_begin(&th, inode->i_sb, jbegin_count)) {
reiserfs_update_sd(&th, inode);
diff --git a/fs/seq_file.c b/fs/seq_file.c
index eae7d9dbf3ff..5afd554efad3 100644
--- a/fs/seq_file.c
+++ b/fs/seq_file.c
@@ -674,7 +674,6 @@ struct list_head *seq_list_start(struct list_head *head, loff_t pos)
return NULL;
}
-
EXPORT_SYMBOL(seq_list_start);
struct list_head *seq_list_start_head(struct list_head *head, loff_t pos)
@@ -684,7 +683,6 @@ struct list_head *seq_list_start_head(struct list_head *head, loff_t pos)
return seq_list_start(head, pos - 1);
}
-
EXPORT_SYMBOL(seq_list_start_head);
struct list_head *seq_list_next(void *v, struct list_head *head, loff_t *ppos)
@@ -695,5 +693,131 @@ struct list_head *seq_list_next(void *v, struct list_head *head, loff_t *ppos)
++*ppos;
return lh == head ? NULL : lh;
}
-
EXPORT_SYMBOL(seq_list_next);
+
+/**
+ * seq_hlist_start - start an iteration of a hlist
+ * @head: the head of the hlist
+ * @pos: the start position of the sequence
+ *
+ * Called at seq_file->op->start().
+ */
+struct hlist_node *seq_hlist_start(struct hlist_head *head, loff_t pos)
+{
+ struct hlist_node *node;
+
+ hlist_for_each(node, head)
+ if (pos-- == 0)
+ return node;
+ return NULL;
+}
+EXPORT_SYMBOL(seq_hlist_start);
+
+/**
+ * seq_hlist_start_head - start an iteration of a hlist
+ * @head: the head of the hlist
+ * @pos: the start position of the sequence
+ *
+ * Called at seq_file->op->start(). Call this function if you want to
+ * print a header at the top of the output.
+ */
+struct hlist_node *seq_hlist_start_head(struct hlist_head *head, loff_t pos)
+{
+ if (!pos)
+ return SEQ_START_TOKEN;
+
+ return seq_hlist_start(head, pos - 1);
+}
+EXPORT_SYMBOL(seq_hlist_start_head);
+
+/**
+ * seq_hlist_next - move to the next position of the hlist
+ * @v: the current iterator
+ * @head: the head of the hlist
+ * @pos: the current posision
+ *
+ * Called at seq_file->op->next().
+ */
+struct hlist_node *seq_hlist_next(void *v, struct hlist_head *head,
+ loff_t *ppos)
+{
+ struct hlist_node *node = v;
+
+ ++*ppos;
+ if (v == SEQ_START_TOKEN)
+ return head->first;
+ else
+ return node->next;
+}
+EXPORT_SYMBOL(seq_hlist_next);
+
+/**
+ * seq_hlist_start_rcu - start an iteration of a hlist protected by RCU
+ * @head: the head of the hlist
+ * @pos: the start position of the sequence
+ *
+ * Called at seq_file->op->start().
+ *
+ * This list-traversal primitive may safely run concurrently with
+ * the _rcu list-mutation primitives such as hlist_add_head_rcu()
+ * as long as the traversal is guarded by rcu_read_lock().
+ */
+struct hlist_node *seq_hlist_start_rcu(struct hlist_head *head,
+ loff_t pos)
+{
+ struct hlist_node *node;
+
+ __hlist_for_each_rcu(node, head)
+ if (pos-- == 0)
+ return node;
+ return NULL;
+}
+EXPORT_SYMBOL(seq_hlist_start_rcu);
+
+/**
+ * seq_hlist_start_head_rcu - start an iteration of a hlist protected by RCU
+ * @head: the head of the hlist
+ * @pos: the start position of the sequence
+ *
+ * Called at seq_file->op->start(). Call this function if you want to
+ * print a header at the top of the output.
+ *
+ * This list-traversal primitive may safely run concurrently with
+ * the _rcu list-mutation primitives such as hlist_add_head_rcu()
+ * as long as the traversal is guarded by rcu_read_lock().
+ */
+struct hlist_node *seq_hlist_start_head_rcu(struct hlist_head *head,
+ loff_t pos)
+{
+ if (!pos)
+ return SEQ_START_TOKEN;
+
+ return seq_hlist_start_rcu(head, pos - 1);
+}
+EXPORT_SYMBOL(seq_hlist_start_head_rcu);
+
+/**
+ * seq_hlist_next_rcu - move to the next position of the hlist protected by RCU
+ * @v: the current iterator
+ * @head: the head of the hlist
+ * @pos: the current posision
+ *
+ * Called at seq_file->op->next().
+ *
+ * This list-traversal primitive may safely run concurrently with
+ * the _rcu list-mutation primitives such as hlist_add_head_rcu()
+ * as long as the traversal is guarded by rcu_read_lock().
+ */
+struct hlist_node *seq_hlist_next_rcu(void *v,
+ struct hlist_head *head,
+ loff_t *ppos)
+{
+ struct hlist_node *node = v;
+
+ ++*ppos;
+ if (v == SEQ_START_TOKEN)
+ return rcu_dereference(head->first);
+ else
+ return rcu_dereference(node->next);
+}
+EXPORT_SYMBOL(seq_hlist_next_rcu);
diff --git a/fs/squashfs/Makefile b/fs/squashfs/Makefile
index 70e3244fa30f..df8a19ef870d 100644
--- a/fs/squashfs/Makefile
+++ b/fs/squashfs/Makefile
@@ -4,4 +4,4 @@
obj-$(CONFIG_SQUASHFS) += squashfs.o
squashfs-y += block.o cache.o dir.o export.o file.o fragment.o id.o inode.o
-squashfs-y += namei.o super.o symlink.o
+squashfs-y += namei.o super.o symlink.o zlib_wrapper.o decompressor.o
diff --git a/fs/squashfs/block.c b/fs/squashfs/block.c
index 2a7960310349..1cb0d81b164b 100644
--- a/fs/squashfs/block.c
+++ b/fs/squashfs/block.c
@@ -29,15 +29,14 @@
#include <linux/fs.h>
#include <linux/vfs.h>
#include <linux/slab.h>
-#include <linux/mutex.h>
#include <linux/string.h>
#include <linux/buffer_head.h>
-#include <linux/zlib.h>
#include "squashfs_fs.h"
#include "squashfs_fs_sb.h"
#include "squashfs_fs_i.h"
#include "squashfs.h"
+#include "decompressor.h"
/*
* Read the metadata block length, this is stored in the first two
@@ -153,72 +152,10 @@ int squashfs_read_data(struct super_block *sb, void **buffer, u64 index,
}
if (compressed) {
- int zlib_err = 0, zlib_init = 0;
-
- /*
- * Uncompress block.
- */
-
- mutex_lock(&msblk->read_data_mutex);
-
- msblk->stream.avail_out = 0;
- msblk->stream.avail_in = 0;
-
- bytes = length;
- do {
- if (msblk->stream.avail_in == 0 && k < b) {
- avail = min(bytes, msblk->devblksize - offset);
- bytes -= avail;
- wait_on_buffer(bh[k]);
- if (!buffer_uptodate(bh[k]))
- goto release_mutex;
-
- if (avail == 0) {
- offset = 0;
- put_bh(bh[k++]);
- continue;
- }
-
- msblk->stream.next_in = bh[k]->b_data + offset;
- msblk->stream.avail_in = avail;
- offset = 0;
- }
-
- if (msblk->stream.avail_out == 0 && page < pages) {
- msblk->stream.next_out = buffer[page++];
- msblk->stream.avail_out = PAGE_CACHE_SIZE;
- }
-
- if (!zlib_init) {
- zlib_err = zlib_inflateInit(&msblk->stream);
- if (zlib_err != Z_OK) {
- ERROR("zlib_inflateInit returned"
- " unexpected result 0x%x,"
- " srclength %d\n", zlib_err,
- srclength);
- goto release_mutex;
- }
- zlib_init = 1;
- }
-
- zlib_err = zlib_inflate(&msblk->stream, Z_SYNC_FLUSH);
-
- if (msblk->stream.avail_in == 0 && k < b)
- put_bh(bh[k++]);
- } while (zlib_err == Z_OK);
-
- if (zlib_err != Z_STREAM_END) {
- ERROR("zlib_inflate error, data probably corrupt\n");
- goto release_mutex;
- }
-
- zlib_err = zlib_inflateEnd(&msblk->stream);
- if (zlib_err != Z_OK) {
- ERROR("zlib_inflate error, data probably corrupt\n");
- goto release_mutex;
- }
- length = msblk->stream.total_out;
- mutex_unlock(&msblk->read_data_mutex);
+ length = squashfs_decompress(msblk, buffer, bh, b, offset,
+ length, srclength, pages);
+ if (length < 0)
+ goto read_failure;
} else {
/*
* Block is uncompressed.
@@ -255,9 +192,6 @@ int squashfs_read_data(struct super_block *sb, void **buffer, u64 index,
kfree(bh);
return length;
-release_mutex:
- mutex_unlock(&msblk->read_data_mutex);
-
block_release:
for (; k < b; k++)
put_bh(bh[k]);
diff --git a/fs/squashfs/cache.c b/fs/squashfs/cache.c
index 40c98fa6b5d6..57314bee9059 100644
--- a/fs/squashfs/cache.c
+++ b/fs/squashfs/cache.c
@@ -51,7 +51,6 @@
#include <linux/sched.h>
#include <linux/spinlock.h>
#include <linux/wait.h>
-#include <linux/zlib.h>
#include <linux/pagemap.h>
#include "squashfs_fs.h"
diff --git a/fs/squashfs/decompressor.c b/fs/squashfs/decompressor.c
new file mode 100644
index 000000000000..157478da6ac9
--- /dev/null
+++ b/fs/squashfs/decompressor.c
@@ -0,0 +1,68 @@
+/*
+ * Squashfs - a compressed read only filesystem for Linux
+ *
+ * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+ * Phillip Lougher <phillip@lougher.demon.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2,
+ * or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * decompressor.c
+ */
+
+#include <linux/types.h>
+#include <linux/mutex.h>
+#include <linux/buffer_head.h>
+
+#include "squashfs_fs.h"
+#include "squashfs_fs_sb.h"
+#include "squashfs_fs_i.h"
+#include "decompressor.h"
+#include "squashfs.h"
+
+/*
+ * This file (and decompressor.h) implements a decompressor framework for
+ * Squashfs, allowing multiple decompressors to be easily supported
+ */
+
+static const struct squashfs_decompressor squashfs_lzma_unsupported_comp_ops = {
+ NULL, NULL, NULL, LZMA_COMPRESSION, "lzma", 0
+};
+
+static const struct squashfs_decompressor squashfs_lzo_unsupported_comp_ops = {
+ NULL, NULL, NULL, LZO_COMPRESSION, "lzo", 0
+};
+
+static const struct squashfs_decompressor squashfs_unknown_comp_ops = {
+ NULL, NULL, NULL, 0, "unknown", 0
+};
+
+static const struct squashfs_decompressor *decompressor[] = {
+ &squashfs_zlib_comp_ops,
+ &squashfs_lzma_unsupported_comp_ops,
+ &squashfs_lzo_unsupported_comp_ops,
+ &squashfs_unknown_comp_ops
+};
+
+
+const struct squashfs_decompressor *squashfs_lookup_decompressor(int id)
+{
+ int i;
+
+ for (i = 0; decompressor[i]->id; i++)
+ if (id == decompressor[i]->id)
+ break;
+
+ return decompressor[i];
+}
diff --git a/fs/squashfs/decompressor.h b/fs/squashfs/decompressor.h
new file mode 100644
index 000000000000..7425f80783f6
--- /dev/null
+++ b/fs/squashfs/decompressor.h
@@ -0,0 +1,55 @@
+#ifndef DECOMPRESSOR_H
+#define DECOMPRESSOR_H
+/*
+ * Squashfs - a compressed read only filesystem for Linux
+ *
+ * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+ * Phillip Lougher <phillip@lougher.demon.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2,
+ * or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * decompressor.h
+ */
+
+struct squashfs_decompressor {
+ void *(*init)(struct squashfs_sb_info *);
+ void (*free)(void *);
+ int (*decompress)(struct squashfs_sb_info *, void **,
+ struct buffer_head **, int, int, int, int, int);
+ int id;
+ char *name;
+ int supported;
+};
+
+static inline void *squashfs_decompressor_init(struct squashfs_sb_info *msblk)
+{
+ return msblk->decompressor->init(msblk);
+}
+
+static inline void squashfs_decompressor_free(struct squashfs_sb_info *msblk,
+ void *s)
+{
+ if (msblk->decompressor)
+ msblk->decompressor->free(s);
+}
+
+static inline int squashfs_decompress(struct squashfs_sb_info *msblk,
+ void **buffer, struct buffer_head **bh, int b, int offset, int length,
+ int srclength, int pages)
+{
+ return msblk->decompressor->decompress(msblk, buffer, bh, b, offset,
+ length, srclength, pages);
+}
+#endif
diff --git a/fs/squashfs/dir.c b/fs/squashfs/dir.c
index 566b0eaed868..12b933ac6585 100644
--- a/fs/squashfs/dir.c
+++ b/fs/squashfs/dir.c
@@ -30,7 +30,6 @@
#include <linux/fs.h>
#include <linux/vfs.h>
#include <linux/slab.h>
-#include <linux/zlib.h>
#include "squashfs_fs.h"
#include "squashfs_fs_sb.h"
diff --git a/fs/squashfs/export.c b/fs/squashfs/export.c
index 2b1b8fe5e037..7f93d5a9ee05 100644
--- a/fs/squashfs/export.c
+++ b/fs/squashfs/export.c
@@ -39,7 +39,6 @@
#include <linux/vfs.h>
#include <linux/dcache.h>
#include <linux/exportfs.h>
-#include <linux/zlib.h>
#include <linux/slab.h>
#include "squashfs_fs.h"
diff --git a/fs/squashfs/file.c b/fs/squashfs/file.c
index 717767d831df..a25c5060bdcb 100644
--- a/fs/squashfs/file.c
+++ b/fs/squashfs/file.c
@@ -47,7 +47,6 @@
#include <linux/string.h>
#include <linux/pagemap.h>
#include <linux/mutex.h>
-#include <linux/zlib.h>
#include "squashfs_fs.h"
#include "squashfs_fs_sb.h"
diff --git a/fs/squashfs/fragment.c b/fs/squashfs/fragment.c
index b5a2c15bbbc7..7c90bbd6879d 100644
--- a/fs/squashfs/fragment.c
+++ b/fs/squashfs/fragment.c
@@ -36,7 +36,6 @@
#include <linux/fs.h>
#include <linux/vfs.h>
#include <linux/slab.h>
-#include <linux/zlib.h>
#include "squashfs_fs.h"
#include "squashfs_fs_sb.h"
diff --git a/fs/squashfs/id.c b/fs/squashfs/id.c
index 3795b837ba28..b7f64bcd2b70 100644
--- a/fs/squashfs/id.c
+++ b/fs/squashfs/id.c
@@ -34,7 +34,6 @@
#include <linux/fs.h>
#include <linux/vfs.h>
#include <linux/slab.h>
-#include <linux/zlib.h>
#include "squashfs_fs.h"
#include "squashfs_fs_sb.h"
diff --git a/fs/squashfs/inode.c b/fs/squashfs/inode.c
index 9101dbde39ec..49daaf669e41 100644
--- a/fs/squashfs/inode.c
+++ b/fs/squashfs/inode.c
@@ -40,7 +40,6 @@
#include <linux/fs.h>
#include <linux/vfs.h>
-#include <linux/zlib.h>
#include "squashfs_fs.h"
#include "squashfs_fs_sb.h"
diff --git a/fs/squashfs/namei.c b/fs/squashfs/namei.c
index 9e398653b22b..5266bd8ad932 100644
--- a/fs/squashfs/namei.c
+++ b/fs/squashfs/namei.c
@@ -57,7 +57,6 @@
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/dcache.h>
-#include <linux/zlib.h>
#include "squashfs_fs.h"
#include "squashfs_fs_sb.h"
diff --git a/fs/squashfs/squashfs.h b/fs/squashfs/squashfs.h
index 0e9feb6adf7e..fe2587af5512 100644
--- a/fs/squashfs/squashfs.h
+++ b/fs/squashfs/squashfs.h
@@ -51,6 +51,9 @@ extern struct squashfs_cache_entry *squashfs_get_datablock(struct super_block *,
u64, int);
extern int squashfs_read_table(struct super_block *, void *, u64, int);
+/* decompressor.c */
+extern const struct squashfs_decompressor *squashfs_lookup_decompressor(int);
+
/* export.c */
extern __le64 *squashfs_read_inode_lookup_table(struct super_block *, u64,
unsigned int);
@@ -71,7 +74,7 @@ extern struct inode *squashfs_iget(struct super_block *, long long,
extern int squashfs_read_inode(struct inode *, long long);
/*
- * Inodes and files operations
+ * Inodes, files and decompressor operations
*/
/* dir.c */
@@ -88,3 +91,6 @@ extern const struct inode_operations squashfs_dir_inode_ops;
/* symlink.c */
extern const struct address_space_operations squashfs_symlink_aops;
+
+/* zlib_wrapper.c */
+extern const struct squashfs_decompressor squashfs_zlib_comp_ops;
diff --git a/fs/squashfs/squashfs_fs.h b/fs/squashfs/squashfs_fs.h
index 283daafc568e..79024245ea00 100644
--- a/fs/squashfs/squashfs_fs.h
+++ b/fs/squashfs/squashfs_fs.h
@@ -183,8 +183,6 @@
#define SQUASHFS_MAX_FILE_SIZE (1LL << \
(SQUASHFS_MAX_FILE_SIZE_LOG - 2))
-#define SQUASHFS_MARKER_BYTE 0xff
-
/* meta index cache */
#define SQUASHFS_META_INDEXES (SQUASHFS_METADATA_SIZE / sizeof(unsigned int))
#define SQUASHFS_META_ENTRIES 127
@@ -211,7 +209,9 @@ struct meta_index {
/*
* definitions for structures on disk
*/
-#define ZLIB_COMPRESSION 1
+#define ZLIB_COMPRESSION 1
+#define LZMA_COMPRESSION 2
+#define LZO_COMPRESSION 3
struct squashfs_super_block {
__le32 s_magic;
diff --git a/fs/squashfs/squashfs_fs_sb.h b/fs/squashfs/squashfs_fs_sb.h
index c8c65614dd1c..2e77dc547e25 100644
--- a/fs/squashfs/squashfs_fs_sb.h
+++ b/fs/squashfs/squashfs_fs_sb.h
@@ -52,25 +52,25 @@ struct squashfs_cache_entry {
};
struct squashfs_sb_info {
- int devblksize;
- int devblksize_log2;
- struct squashfs_cache *block_cache;
- struct squashfs_cache *fragment_cache;
- struct squashfs_cache *read_page;
- int next_meta_index;
- __le64 *id_table;
- __le64 *fragment_index;
- unsigned int *fragment_index_2;
- struct mutex read_data_mutex;
- struct mutex meta_index_mutex;
- struct meta_index *meta_index;
- z_stream stream;
- __le64 *inode_lookup_table;
- u64 inode_table;
- u64 directory_table;
- unsigned int block_size;
- unsigned short block_log;
- long long bytes_used;
- unsigned int inodes;
+ const struct squashfs_decompressor *decompressor;
+ int devblksize;
+ int devblksize_log2;
+ struct squashfs_cache *block_cache;
+ struct squashfs_cache *fragment_cache;
+ struct squashfs_cache *read_page;
+ int next_meta_index;
+ __le64 *id_table;
+ __le64 *fragment_index;
+ struct mutex read_data_mutex;
+ struct mutex meta_index_mutex;
+ struct meta_index *meta_index;
+ void *stream;
+ __le64 *inode_lookup_table;
+ u64 inode_table;
+ u64 directory_table;
+ unsigned int block_size;
+ unsigned short block_log;
+ long long bytes_used;
+ unsigned int inodes;
};
#endif
diff --git a/fs/squashfs/super.c b/fs/squashfs/super.c
index 6c197ef53add..3550aec2f655 100644
--- a/fs/squashfs/super.c
+++ b/fs/squashfs/super.c
@@ -35,34 +35,41 @@
#include <linux/pagemap.h>
#include <linux/init.h>
#include <linux/module.h>
-#include <linux/zlib.h>
#include <linux/magic.h>
#include "squashfs_fs.h"
#include "squashfs_fs_sb.h"
#include "squashfs_fs_i.h"
#include "squashfs.h"
+#include "decompressor.h"
static struct file_system_type squashfs_fs_type;
static const struct super_operations squashfs_super_ops;
-static int supported_squashfs_filesystem(short major, short minor, short comp)
+static const struct squashfs_decompressor *supported_squashfs_filesystem(short
+ major, short minor, short id)
{
+ const struct squashfs_decompressor *decompressor;
+
if (major < SQUASHFS_MAJOR) {
ERROR("Major/Minor mismatch, older Squashfs %d.%d "
"filesystems are unsupported\n", major, minor);
- return -EINVAL;
+ return NULL;
} else if (major > SQUASHFS_MAJOR || minor > SQUASHFS_MINOR) {
ERROR("Major/Minor mismatch, trying to mount newer "
"%d.%d filesystem\n", major, minor);
ERROR("Please update your kernel\n");
- return -EINVAL;
+ return NULL;
}
- if (comp != ZLIB_COMPRESSION)
- return -EINVAL;
+ decompressor = squashfs_lookup_decompressor(id);
+ if (!decompressor->supported) {
+ ERROR("Filesystem uses \"%s\" compression. This is not "
+ "supported\n", decompressor->name);
+ return NULL;
+ }
- return 0;
+ return decompressor;
}
@@ -87,13 +94,6 @@ static int squashfs_fill_super(struct super_block *sb, void *data, int silent)
}
msblk = sb->s_fs_info;
- msblk->stream.workspace = kmalloc(zlib_inflate_workspacesize(),
- GFP_KERNEL);
- if (msblk->stream.workspace == NULL) {
- ERROR("Failed to allocate zlib workspace\n");
- goto failure;
- }
-
sblk = kzalloc(sizeof(*sblk), GFP_KERNEL);
if (sblk == NULL) {
ERROR("Failed to allocate squashfs_super_block\n");
@@ -120,25 +120,25 @@ static int squashfs_fill_super(struct super_block *sb, void *data, int silent)
goto failed_mount;
}
+ err = -EINVAL;
+
/* Check it is a SQUASHFS superblock */
sb->s_magic = le32_to_cpu(sblk->s_magic);
if (sb->s_magic != SQUASHFS_MAGIC) {
if (!silent)
ERROR("Can't find a SQUASHFS superblock on %s\n",
bdevname(sb->s_bdev, b));
- err = -EINVAL;
goto failed_mount;
}
- /* Check the MAJOR & MINOR versions and compression type */
- err = supported_squashfs_filesystem(le16_to_cpu(sblk->s_major),
+ /* Check the MAJOR & MINOR versions and lookup compression type */
+ msblk->decompressor = supported_squashfs_filesystem(
+ le16_to_cpu(sblk->s_major),
le16_to_cpu(sblk->s_minor),
le16_to_cpu(sblk->compression));
- if (err < 0)
+ if (msblk->decompressor == NULL)
goto failed_mount;
- err = -EINVAL;
-
/*
* Check if there's xattrs in the filesystem. These are not
* supported in this version, so warn that they will be ignored.
@@ -205,6 +205,10 @@ static int squashfs_fill_super(struct super_block *sb, void *data, int silent)
err = -ENOMEM;
+ msblk->stream = squashfs_decompressor_init(msblk);
+ if (msblk->stream == NULL)
+ goto failed_mount;
+
msblk->block_cache = squashfs_cache_init("metadata",
SQUASHFS_CACHED_BLKS, SQUASHFS_METADATA_SIZE);
if (msblk->block_cache == NULL)
@@ -292,17 +296,16 @@ failed_mount:
squashfs_cache_delete(msblk->block_cache);
squashfs_cache_delete(msblk->fragment_cache);
squashfs_cache_delete(msblk->read_page);
+ squashfs_decompressor_free(msblk, msblk->stream);
kfree(msblk->inode_lookup_table);
kfree(msblk->fragment_index);
kfree(msblk->id_table);
- kfree(msblk->stream.workspace);
kfree(sb->s_fs_info);
sb->s_fs_info = NULL;
kfree(sblk);
return err;
failure:
- kfree(msblk->stream.workspace);
kfree(sb->s_fs_info);
sb->s_fs_info = NULL;
return -ENOMEM;
@@ -346,10 +349,10 @@ static void squashfs_put_super(struct super_block *sb)
squashfs_cache_delete(sbi->block_cache);
squashfs_cache_delete(sbi->fragment_cache);
squashfs_cache_delete(sbi->read_page);
+ squashfs_decompressor_free(sbi, sbi->stream);
kfree(sbi->id_table);
kfree(sbi->fragment_index);
kfree(sbi->meta_index);
- kfree(sbi->stream.workspace);
kfree(sb->s_fs_info);
sb->s_fs_info = NULL;
}
diff --git a/fs/squashfs/symlink.c b/fs/squashfs/symlink.c
index 83d87880aac8..e80be2022a7f 100644
--- a/fs/squashfs/symlink.c
+++ b/fs/squashfs/symlink.c
@@ -36,7 +36,6 @@
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/pagemap.h>
-#include <linux/zlib.h>
#include "squashfs_fs.h"
#include "squashfs_fs_sb.h"
diff --git a/fs/squashfs/zlib_wrapper.c b/fs/squashfs/zlib_wrapper.c
new file mode 100644
index 000000000000..4dd70e04333b
--- /dev/null
+++ b/fs/squashfs/zlib_wrapper.c
@@ -0,0 +1,150 @@
+/*
+ * Squashfs - a compressed read only filesystem for Linux
+ *
+ * Copyright (c) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
+ * Phillip Lougher <phillip@lougher.demon.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2,
+ * or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * zlib_wrapper.c
+ */
+
+
+#include <linux/mutex.h>
+#include <linux/buffer_head.h>
+#include <linux/zlib.h>
+
+#include "squashfs_fs.h"
+#include "squashfs_fs_sb.h"
+#include "squashfs_fs_i.h"
+#include "squashfs.h"
+#include "decompressor.h"
+
+static void *zlib_init(struct squashfs_sb_info *dummy)
+{
+ z_stream *stream = kmalloc(sizeof(z_stream), GFP_KERNEL);
+ if (stream == NULL)
+ goto failed;
+ stream->workspace = kmalloc(zlib_inflate_workspacesize(),
+ GFP_KERNEL);
+ if (stream->workspace == NULL)
+ goto failed;
+
+ return stream;
+
+failed:
+ ERROR("Failed to allocate zlib workspace\n");
+ kfree(stream);
+ return NULL;
+}
+
+
+static void zlib_free(void *strm)
+{
+ z_stream *stream = strm;
+
+ if (stream)
+ kfree(stream->workspace);
+ kfree(stream);
+}
+
+
+static int zlib_uncompress(struct squashfs_sb_info *msblk, void **buffer,
+ struct buffer_head **bh, int b, int offset, int length, int srclength,
+ int pages)
+{
+ int zlib_err = 0, zlib_init = 0;
+ int avail, bytes, k = 0, page = 0;
+ z_stream *stream = msblk->stream;
+
+ mutex_lock(&msblk->read_data_mutex);
+
+ stream->avail_out = 0;
+ stream->avail_in = 0;
+
+ bytes = length;
+ do {
+ if (stream->avail_in == 0 && k < b) {
+ avail = min(bytes, msblk->devblksize - offset);
+ bytes -= avail;
+ wait_on_buffer(bh[k]);
+ if (!buffer_uptodate(bh[k]))
+ goto release_mutex;
+
+ if (avail == 0) {
+ offset = 0;
+ put_bh(bh[k++]);
+ continue;
+ }
+
+ stream->next_in = bh[k]->b_data + offset;
+ stream->avail_in = avail;
+ offset = 0;
+ }
+
+ if (stream->avail_out == 0 && page < pages) {
+ stream->next_out = buffer[page++];
+ stream->avail_out = PAGE_CACHE_SIZE;
+ }
+
+ if (!zlib_init) {
+ zlib_err = zlib_inflateInit(stream);
+ if (zlib_err != Z_OK) {
+ ERROR("zlib_inflateInit returned unexpected "
+ "result 0x%x, srclength %d\n",
+ zlib_err, srclength);
+ goto release_mutex;
+ }
+ zlib_init = 1;
+ }
+
+ zlib_err = zlib_inflate(stream, Z_SYNC_FLUSH);
+
+ if (stream->avail_in == 0 && k < b)
+ put_bh(bh[k++]);
+ } while (zlib_err == Z_OK);
+
+ if (zlib_err != Z_STREAM_END) {
+ ERROR("zlib_inflate error, data probably corrupt\n");
+ goto release_mutex;
+ }
+
+ zlib_err = zlib_inflateEnd(stream);
+ if (zlib_err != Z_OK) {
+ ERROR("zlib_inflate error, data probably corrupt\n");
+ goto release_mutex;
+ }
+
+ mutex_unlock(&msblk->read_data_mutex);
+ return stream->total_out;
+
+release_mutex:
+ mutex_unlock(&msblk->read_data_mutex);
+
+ for (; k < b; k++)
+ put_bh(bh[k]);
+
+ return -EIO;
+}
+
+const struct squashfs_decompressor squashfs_zlib_comp_ops = {
+ .init = zlib_init,
+ .free = zlib_free,
+ .decompress = zlib_uncompress,
+ .id = ZLIB_COMPRESSION,
+ .name = "zlib",
+ .supported = 1
+};
+
diff --git a/fs/super.c b/fs/super.c
index aff046b0fe78..f35ac6022109 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -568,7 +568,7 @@ out:
int do_remount_sb(struct super_block *sb, int flags, void *data, int force)
{
int retval;
- int remount_rw;
+ int remount_rw, remount_ro;
if (sb->s_frozen != SB_UNFROZEN)
return -EBUSY;
@@ -583,9 +583,12 @@ int do_remount_sb(struct super_block *sb, int flags, void *data, int force)
shrink_dcache_sb(sb);
sync_filesystem(sb);
+ remount_ro = (flags & MS_RDONLY) && !(sb->s_flags & MS_RDONLY);
+ remount_rw = !(flags & MS_RDONLY) && (sb->s_flags & MS_RDONLY);
+
/* If we are remounting RDONLY and current sb is read/write,
make sure there are no rw files opened */
- if ((flags & MS_RDONLY) && !(sb->s_flags & MS_RDONLY)) {
+ if (remount_ro) {
if (force)
mark_files_ro(sb);
else if (!fs_may_remount_ro(sb))
@@ -594,7 +597,6 @@ int do_remount_sb(struct super_block *sb, int flags, void *data, int force)
if (retval < 0 && retval != -ENOSYS)
return -EBUSY;
}
- remount_rw = !(flags & MS_RDONLY) && (sb->s_flags & MS_RDONLY);
if (sb->s_op->remount_fs) {
retval = sb->s_op->remount_fs(sb, &flags, data);
@@ -604,6 +606,16 @@ int do_remount_sb(struct super_block *sb, int flags, void *data, int force)
sb->s_flags = (sb->s_flags & ~MS_RMT_MASK) | (flags & MS_RMT_MASK);
if (remount_rw)
vfs_dq_quota_on_remount(sb);
+ /*
+ * Some filesystems modify their metadata via some other path than the
+ * bdev buffer cache (eg. use a private mapping, or directories in
+ * pagecache, etc). Also file data modifications go via their own
+ * mappings. So If we try to mount readonly then copy the filesystem
+ * from bdev, we could get stale data, so invalidate it to give a best
+ * effort at coherency.
+ */
+ if (remount_ro && sb->s_bdev)
+ invalidate_bdev(sb->s_bdev);
return 0;
}
@@ -925,6 +937,9 @@ vfs_kern_mount(struct file_system_type *type, int flags, const char *name, void
if (!mnt)
goto out;
+ if (flags & MS_KERNMOUNT)
+ mnt->mnt_flags = MNT_INTERNAL;
+
if (data && !(type->fs_flags & FS_BINARY_MOUNTDATA)) {
secdata = alloc_secdata();
if (!secdata)
diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index 220b758523ae..6a06a1d1ea7b 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -81,24 +81,23 @@ int sysfs_sd_setattr(struct sysfs_dirent *sd, struct iattr * iattr)
if (!sd_attrs)
return -ENOMEM;
sd->s_iattr = sd_attrs;
- } else {
- /* attributes were changed at least once in past */
- iattrs = &sd_attrs->ia_iattr;
-
- if (ia_valid & ATTR_UID)
- iattrs->ia_uid = iattr->ia_uid;
- if (ia_valid & ATTR_GID)
- iattrs->ia_gid = iattr->ia_gid;
- if (ia_valid & ATTR_ATIME)
- iattrs->ia_atime = iattr->ia_atime;
- if (ia_valid & ATTR_MTIME)
- iattrs->ia_mtime = iattr->ia_mtime;
- if (ia_valid & ATTR_CTIME)
- iattrs->ia_ctime = iattr->ia_ctime;
- if (ia_valid & ATTR_MODE) {
- umode_t mode = iattr->ia_mode;
- iattrs->ia_mode = sd->s_mode = mode;
- }
+ }
+ /* attributes were changed at least once in past */
+ iattrs = &sd_attrs->ia_iattr;
+
+ if (ia_valid & ATTR_UID)
+ iattrs->ia_uid = iattr->ia_uid;
+ if (ia_valid & ATTR_GID)
+ iattrs->ia_gid = iattr->ia_gid;
+ if (ia_valid & ATTR_ATIME)
+ iattrs->ia_atime = iattr->ia_atime;
+ if (ia_valid & ATTR_MTIME)
+ iattrs->ia_mtime = iattr->ia_mtime;
+ if (ia_valid & ATTR_CTIME)
+ iattrs->ia_ctime = iattr->ia_ctime;
+ if (ia_valid & ATTR_MODE) {
+ umode_t mode = iattr->ia_mode;
+ iattrs->ia_mode = sd->s_mode = mode;
}
return 0;
}
diff --git a/fs/sysv/inode.c b/fs/sysv/inode.c
index 9824743832a7..4573734d723d 100644
--- a/fs/sysv/inode.c
+++ b/fs/sysv/inode.c
@@ -26,6 +26,7 @@
#include <linux/init.h>
#include <linux/buffer_head.h>
#include <linux/vfs.h>
+#include <linux/writeback.h>
#include <linux/namei.h>
#include <asm/byteorder.h>
#include "sysv.h"
@@ -246,7 +247,7 @@ bad_inode:
return ERR_PTR(-EIO);
}
-int sysv_write_inode(struct inode *inode, int wait)
+static int __sysv_write_inode(struct inode *inode, int wait)
{
struct super_block * sb = inode->i_sb;
struct sysv_sb_info * sbi = SYSV_SB(sb);
@@ -296,9 +297,14 @@ int sysv_write_inode(struct inode *inode, int wait)
return 0;
}
+int sysv_write_inode(struct inode *inode, struct writeback_control *wbc)
+{
+ return __sysv_write_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
+}
+
int sysv_sync_inode(struct inode *inode)
{
- return sysv_write_inode(inode, 1);
+ return __sysv_write_inode(inode, 1);
}
static void sysv_delete_inode(struct inode *inode)
diff --git a/fs/sysv/sysv.h b/fs/sysv/sysv.h
index 53786eb5cf60..94cb9b4d76c2 100644
--- a/fs/sysv/sysv.h
+++ b/fs/sysv/sysv.h
@@ -142,7 +142,7 @@ extern int __sysv_write_begin(struct file *file, struct address_space *mapping,
/* inode.c */
extern struct inode *sysv_iget(struct super_block *, unsigned int);
-extern int sysv_write_inode(struct inode *, int);
+extern int sysv_write_inode(struct inode *, struct writeback_control *wbc);
extern int sysv_sync_inode(struct inode *);
extern void sysv_set_inode(struct inode *, dev_t);
extern int sysv_getattr(struct vfsmount *, struct dentry *, struct kstat *);
diff --git a/fs/ubifs/dir.c b/fs/ubifs/dir.c
index 552fb0111fff..401e503d44a1 100644
--- a/fs/ubifs/dir.c
+++ b/fs/ubifs/dir.c
@@ -1120,7 +1120,7 @@ static int ubifs_rename(struct inode *old_dir, struct dentry *old_dentry,
if (release)
ubifs_release_budget(c, &ino_req);
if (IS_SYNC(old_inode))
- err = old_inode->i_sb->s_op->write_inode(old_inode, 1);
+ err = old_inode->i_sb->s_op->write_inode(old_inode, NULL);
return err;
out_cancel:
diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index 16a6444330ec..e26c02ab6cd5 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -1011,7 +1011,7 @@ static int ubifs_writepage(struct page *page, struct writeback_control *wbc)
/* Is the page fully inside @i_size? */
if (page->index < end_index) {
if (page->index >= synced_i_size >> PAGE_CACHE_SHIFT) {
- err = inode->i_sb->s_op->write_inode(inode, 1);
+ err = inode->i_sb->s_op->write_inode(inode, NULL);
if (err)
goto out_unlock;
/*
@@ -1039,7 +1039,7 @@ static int ubifs_writepage(struct page *page, struct writeback_control *wbc)
kunmap_atomic(kaddr, KM_USER0);
if (i_size > synced_i_size) {
- err = inode->i_sb->s_op->write_inode(inode, 1);
+ err = inode->i_sb->s_op->write_inode(inode, NULL);
if (err)
goto out_unlock;
}
@@ -1242,7 +1242,7 @@ static int do_setattr(struct ubifs_info *c, struct inode *inode,
if (release)
ubifs_release_budget(c, &req);
if (IS_SYNC(inode))
- err = inode->i_sb->s_op->write_inode(inode, 1);
+ err = inode->i_sb->s_op->write_inode(inode, NULL);
return err;
out:
@@ -1316,7 +1316,7 @@ int ubifs_fsync(struct file *file, struct dentry *dentry, int datasync)
* the inode unless this is a 'datasync()' call.
*/
if (!datasync || (inode->i_state & I_DIRTY_DATASYNC)) {
- err = inode->i_sb->s_op->write_inode(inode, 1);
+ err = inode->i_sb->s_op->write_inode(inode, NULL);
if (err)
return err;
}
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 43f9d19a6f33..4d2f2157dd3f 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -283,7 +283,7 @@ static void ubifs_destroy_inode(struct inode *inode)
/*
* Note, Linux write-back code calls this without 'i_mutex'.
*/
-static int ubifs_write_inode(struct inode *inode, int wait)
+static int ubifs_write_inode(struct inode *inode, struct writeback_control *wbc)
{
int err = 0;
struct ubifs_info *c = inode->i_sb->s_fs_info;
diff --git a/fs/udf/balloc.c b/fs/udf/balloc.c
index 82372e332f08..b2d96f45c12b 100644
--- a/fs/udf/balloc.c
+++ b/fs/udf/balloc.c
@@ -547,7 +547,7 @@ static void udf_table_free_blocks(struct super_block *sb,
}
if (epos.offset + (2 * adsize) > sb->s_blocksize) {
- char *sptr, *dptr;
+ unsigned char *sptr, *dptr;
int loffset;
brelse(oepos.bh);
diff --git a/fs/udf/dir.c b/fs/udf/dir.c
index 61d9a76a3a69..f0f2a436251e 100644
--- a/fs/udf/dir.c
+++ b/fs/udf/dir.c
@@ -45,8 +45,8 @@ static int do_udf_readdir(struct inode *dir, struct file *filp,
int block, iblock;
loff_t nf_pos = (filp->f_pos - 1) << 2;
int flen;
- char *fname = NULL;
- char *nameptr;
+ unsigned char *fname = NULL;
+ unsigned char *nameptr;
uint16_t liu;
uint8_t lfi;
loff_t size = udf_ext0_offset(dir) + dir->i_size;
diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index f90231eb2916..b02089247296 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -1373,12 +1373,12 @@ static mode_t udf_convert_permissions(struct fileEntry *fe)
return mode;
}
-int udf_write_inode(struct inode *inode, int sync)
+int udf_write_inode(struct inode *inode, struct writeback_control *wbc)
{
int ret;
lock_kernel();
- ret = udf_update_inode(inode, sync);
+ ret = udf_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
unlock_kernel();
return ret;
@@ -1672,7 +1672,7 @@ int8_t udf_add_aext(struct inode *inode, struct extent_position *epos,
return -1;
if (epos->offset + (2 * adsize) > inode->i_sb->s_blocksize) {
- char *sptr, *dptr;
+ unsigned char *sptr, *dptr;
struct buffer_head *nbh;
int err, loffset;
struct kernel_lb_addr obloc = epos->block;
diff --git a/fs/udf/namei.c b/fs/udf/namei.c
index cd2115060fdc..7c56ff00cd53 100644
--- a/fs/udf/namei.c
+++ b/fs/udf/namei.c
@@ -34,8 +34,8 @@
#include <linux/crc-itu-t.h>
#include <linux/exportfs.h>
-static inline int udf_match(int len1, const char *name1, int len2,
- const char *name2)
+static inline int udf_match(int len1, const unsigned char *name1, int len2,
+ const unsigned char *name2)
{
if (len1 != len2)
return 0;
@@ -142,15 +142,15 @@ int udf_write_fi(struct inode *inode, struct fileIdentDesc *cfi,
}
static struct fileIdentDesc *udf_find_entry(struct inode *dir,
- struct qstr *child,
+ const struct qstr *child,
struct udf_fileident_bh *fibh,
struct fileIdentDesc *cfi)
{
struct fileIdentDesc *fi = NULL;
loff_t f_pos;
int block, flen;
- char *fname = NULL;
- char *nameptr;
+ unsigned char *fname = NULL;
+ unsigned char *nameptr;
uint8_t lfi;
uint16_t liu;
loff_t size;
@@ -308,7 +308,7 @@ static struct fileIdentDesc *udf_add_entry(struct inode *dir,
{
struct super_block *sb = dir->i_sb;
struct fileIdentDesc *fi = NULL;
- char *name = NULL;
+ unsigned char *name = NULL;
int namelen;
loff_t f_pos;
loff_t size = udf_ext0_offset(dir) + dir->i_size;
@@ -885,16 +885,16 @@ static int udf_symlink(struct inode *dir, struct dentry *dentry,
{
struct inode *inode;
struct pathComponent *pc;
- char *compstart;
+ const char *compstart;
struct udf_fileident_bh fibh;
struct extent_position epos = {};
int eoffset, elen = 0;
struct fileIdentDesc *fi;
struct fileIdentDesc cfi;
- char *ea;
+ uint8_t *ea;
int err;
int block;
- char *name = NULL;
+ unsigned char *name = NULL;
int namelen;
struct buffer_head *bh;
struct udf_inode_info *iinfo;
@@ -970,7 +970,7 @@ static int udf_symlink(struct inode *dir, struct dentry *dentry,
pc = (struct pathComponent *)(ea + elen);
- compstart = (char *)symname;
+ compstart = symname;
do {
symname++;
diff --git a/fs/udf/symlink.c b/fs/udf/symlink.c
index c3265e1385d4..852e91845688 100644
--- a/fs/udf/symlink.c
+++ b/fs/udf/symlink.c
@@ -32,12 +32,12 @@
#include <linux/buffer_head.h>
#include "udf_i.h"
-static void udf_pc_to_char(struct super_block *sb, char *from, int fromlen,
- char *to)
+static void udf_pc_to_char(struct super_block *sb, unsigned char *from,
+ int fromlen, unsigned char *to)
{
struct pathComponent *pc;
int elen = 0;
- char *p = to;
+ unsigned char *p = to;
while (elen < fromlen) {
pc = (struct pathComponent *)(from + elen);
@@ -75,9 +75,9 @@ static int udf_symlink_filler(struct file *file, struct page *page)
{
struct inode *inode = page->mapping->host;
struct buffer_head *bh = NULL;
- char *symlink;
+ unsigned char *symlink;
int err = -EIO;
- char *p = kmap(page);
+ unsigned char *p = kmap(page);
struct udf_inode_info *iinfo;
lock_kernel();
diff --git a/fs/udf/udfdecl.h b/fs/udf/udfdecl.h
index 8d46f4294ee7..4223ac855da9 100644
--- a/fs/udf/udfdecl.h
+++ b/fs/udf/udfdecl.h
@@ -142,7 +142,7 @@ extern void udf_truncate(struct inode *);
extern void udf_read_inode(struct inode *);
extern void udf_delete_inode(struct inode *);
extern void udf_clear_inode(struct inode *);
-extern int udf_write_inode(struct inode *, int);
+extern int udf_write_inode(struct inode *, struct writeback_control *wbc);
extern long udf_block_map(struct inode *, sector_t);
extern int udf_extend_file(struct inode *, struct extent_position *,
struct kernel_long_ad *, sector_t);
diff --git a/fs/ufs/dir.c b/fs/ufs/dir.c
index 22af68f8b682..317a0d444f6b 100644
--- a/fs/ufs/dir.c
+++ b/fs/ufs/dir.c
@@ -31,7 +31,7 @@
* len <= UFS_MAXNAMLEN and de != NULL are guaranteed by caller.
*/
static inline int ufs_match(struct super_block *sb, int len,
- const char * const name, struct ufs_dir_entry * de)
+ const unsigned char *name, struct ufs_dir_entry *de)
{
if (len != ufs_get_de_namlen(sb, de))
return 0;
@@ -70,7 +70,7 @@ static inline unsigned long ufs_dir_pages(struct inode *inode)
return (inode->i_size+PAGE_CACHE_SIZE-1)>>PAGE_CACHE_SHIFT;
}
-ino_t ufs_inode_by_name(struct inode *dir, struct qstr *qstr)
+ino_t ufs_inode_by_name(struct inode *dir, const struct qstr *qstr)
{
ino_t res = 0;
struct ufs_dir_entry *de;
@@ -249,11 +249,11 @@ struct ufs_dir_entry *ufs_dotdot(struct inode *dir, struct page **p)
* (as a parameter - res_dir). Page is returned mapped and unlocked.
* Entry is guaranteed to be valid.
*/
-struct ufs_dir_entry *ufs_find_entry(struct inode *dir, struct qstr *qstr,
+struct ufs_dir_entry *ufs_find_entry(struct inode *dir, const struct qstr *qstr,
struct page **res_page)
{
struct super_block *sb = dir->i_sb;
- const char *name = qstr->name;
+ const unsigned char *name = qstr->name;
int namelen = qstr->len;
unsigned reclen = UFS_DIR_REC_LEN(namelen);
unsigned long start, n;
@@ -313,7 +313,7 @@ found:
int ufs_add_link(struct dentry *dentry, struct inode *inode)
{
struct inode *dir = dentry->d_parent->d_inode;
- const char *name = dentry->d_name.name;
+ const unsigned char *name = dentry->d_name.name;
int namelen = dentry->d_name.len;
struct super_block *sb = dir->i_sb;
unsigned reclen = UFS_DIR_REC_LEN(namelen);
diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c
index 7cf33379fd46..0a627e08610b 100644
--- a/fs/ufs/inode.c
+++ b/fs/ufs/inode.c
@@ -36,6 +36,7 @@
#include <linux/mm.h>
#include <linux/smp_lock.h>
#include <linux/buffer_head.h>
+#include <linux/writeback.h>
#include "ufs_fs.h"
#include "ufs.h"
@@ -890,11 +891,11 @@ static int ufs_update_inode(struct inode * inode, int do_sync)
return 0;
}
-int ufs_write_inode (struct inode * inode, int wait)
+int ufs_write_inode(struct inode *inode, struct writeback_control *wbc)
{
int ret;
lock_kernel();
- ret = ufs_update_inode (inode, wait);
+ ret = ufs_update_inode(inode, wbc->sync_mode == WB_SYNC_ALL);
unlock_kernel();
return ret;
}
diff --git a/fs/ufs/ufs.h b/fs/ufs/ufs.h
index 0b4c39bc0d9e..43f9f5d5670e 100644
--- a/fs/ufs/ufs.h
+++ b/fs/ufs/ufs.h
@@ -86,9 +86,9 @@ extern void ufs_put_cylinder (struct super_block *, unsigned);
/* dir.c */
extern const struct inode_operations ufs_dir_inode_operations;
extern int ufs_add_link (struct dentry *, struct inode *);
-extern ino_t ufs_inode_by_name(struct inode *, struct qstr *);
+extern ino_t ufs_inode_by_name(struct inode *, const struct qstr *);
extern int ufs_make_empty(struct inode *, struct inode *);
-extern struct ufs_dir_entry *ufs_find_entry(struct inode *, struct qstr *, struct page **);
+extern struct ufs_dir_entry *ufs_find_entry(struct inode *, const struct qstr *, struct page **);
extern int ufs_delete_entry(struct inode *, struct ufs_dir_entry *, struct page *);
extern int ufs_empty_dir (struct inode *);
extern struct ufs_dir_entry *ufs_dotdot(struct inode *, struct page **);
@@ -106,7 +106,7 @@ extern struct inode * ufs_new_inode (struct inode *, int);
/* inode.c */
extern struct inode *ufs_iget(struct super_block *, unsigned long);
-extern int ufs_write_inode (struct inode *, int);
+extern int ufs_write_inode (struct inode *, struct writeback_control *);
extern int ufs_sync_inode (struct inode *);
extern void ufs_delete_inode (struct inode *);
extern struct buffer_head * ufs_bread (struct inode *, unsigned, int, int *);
diff --git a/fs/xfs/Makefile b/fs/xfs/Makefile
index 56641fe52a23..5c5a366aa332 100644
--- a/fs/xfs/Makefile
+++ b/fs/xfs/Makefile
@@ -16,7 +16,7 @@
# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
-EXTRA_CFLAGS += -I$(src) -I$(src)/linux-2.6 -funsigned-char
+EXTRA_CFLAGS += -I$(src) -I$(src)/linux-2.6
XFS_LINUX := linux-2.6
diff --git a/fs/xfs/linux-2.6/kmem.c b/fs/xfs/linux-2.6/kmem.c
index 2d3f90afe5f1..bc7405585def 100644
--- a/fs/xfs/linux-2.6/kmem.c
+++ b/fs/xfs/linux-2.6/kmem.c
@@ -16,7 +16,6 @@
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <linux/mm.h>
-#include <linux/vmalloc.h>
#include <linux/highmem.h>
#include <linux/swap.h>
#include <linux/blkdev.h>
@@ -24,8 +23,25 @@
#include "time.h"
#include "kmem.h"
-#define MAX_VMALLOCS 6
-#define MAX_SLAB_SIZE 0x20000
+/*
+ * Greedy allocation. May fail and may return vmalloced memory.
+ *
+ * Must be freed using kmem_free_large.
+ */
+void *
+kmem_zalloc_greedy(size_t *size, size_t minsize, size_t maxsize)
+{
+ void *ptr;
+ size_t kmsize = maxsize;
+
+ while (!(ptr = kmem_zalloc_large(kmsize))) {
+ if ((kmsize >>= 1) <= minsize)
+ kmsize = minsize;
+ }
+ if (ptr)
+ *size = kmsize;
+ return ptr;
+}
void *
kmem_alloc(size_t size, unsigned int __nocast flags)
@@ -34,19 +50,8 @@ kmem_alloc(size_t size, unsigned int __nocast flags)
gfp_t lflags = kmem_flags_convert(flags);
void *ptr;
-#ifdef DEBUG
- if (unlikely(!(flags & KM_LARGE) && (size > PAGE_SIZE))) {
- printk(KERN_WARNING "Large %s attempt, size=%ld\n",
- __func__, (long)size);
- dump_stack();
- }
-#endif
-
do {
- if (size < MAX_SLAB_SIZE || retries > MAX_VMALLOCS)
- ptr = kmalloc(size, lflags);
- else
- ptr = __vmalloc(size, lflags, PAGE_KERNEL);
+ ptr = kmalloc(size, lflags);
if (ptr || (flags & (KM_MAYFAIL|KM_NOSLEEP)))
return ptr;
if (!(++retries % 100))
@@ -68,27 +73,6 @@ kmem_zalloc(size_t size, unsigned int __nocast flags)
return ptr;
}
-void *
-kmem_zalloc_greedy(size_t *size, size_t minsize, size_t maxsize,
- unsigned int __nocast flags)
-{
- void *ptr;
- size_t kmsize = maxsize;
- unsigned int kmflags = (flags & ~KM_SLEEP) | KM_NOSLEEP;
-
- while (!(ptr = kmem_zalloc(kmsize, kmflags))) {
- if ((kmsize <= minsize) && (flags & KM_NOSLEEP))
- break;
- if ((kmsize >>= 1) <= minsize) {
- kmsize = minsize;
- kmflags = flags;
- }
- }
- if (ptr)
- *size = kmsize;
- return ptr;
-}
-
void
kmem_free(const void *ptr)
{
diff --git a/fs/xfs/linux-2.6/kmem.h b/fs/xfs/linux-2.6/kmem.h
index 179cbd630f69..f7c8f7a9ea6d 100644
--- a/fs/xfs/linux-2.6/kmem.h
+++ b/fs/xfs/linux-2.6/kmem.h
@@ -21,6 +21,7 @@
#include <linux/slab.h>
#include <linux/sched.h>
#include <linux/mm.h>
+#include <linux/vmalloc.h>
/*
* General memory allocation interfaces
@@ -30,7 +31,6 @@
#define KM_NOSLEEP 0x0002u
#define KM_NOFS 0x0004u
#define KM_MAYFAIL 0x0008u
-#define KM_LARGE 0x0010u
/*
* We use a special process flag to avoid recursive callbacks into
@@ -42,7 +42,7 @@ kmem_flags_convert(unsigned int __nocast flags)
{
gfp_t lflags;
- BUG_ON(flags & ~(KM_SLEEP|KM_NOSLEEP|KM_NOFS|KM_MAYFAIL|KM_LARGE));
+ BUG_ON(flags & ~(KM_SLEEP|KM_NOSLEEP|KM_NOFS|KM_MAYFAIL));
if (flags & KM_NOSLEEP) {
lflags = GFP_ATOMIC | __GFP_NOWARN;
@@ -56,10 +56,25 @@ kmem_flags_convert(unsigned int __nocast flags)
extern void *kmem_alloc(size_t, unsigned int __nocast);
extern void *kmem_zalloc(size_t, unsigned int __nocast);
-extern void *kmem_zalloc_greedy(size_t *, size_t, size_t, unsigned int __nocast);
extern void *kmem_realloc(const void *, size_t, size_t, unsigned int __nocast);
extern void kmem_free(const void *);
+static inline void *kmem_zalloc_large(size_t size)
+{
+ void *ptr;
+
+ ptr = vmalloc(size);
+ if (ptr)
+ memset(ptr, 0, size);
+ return ptr;
+}
+static inline void kmem_free_large(void *ptr)
+{
+ vfree(ptr);
+}
+
+extern void *kmem_zalloc_greedy(size_t *, size_t, size_t);
+
/*
* Zone interfaces
*/
diff --git a/fs/xfs/linux-2.6/xfs_acl.c b/fs/xfs/linux-2.6/xfs_acl.c
index 883ca5ab8af5..bf85bbe4a9ae 100644
--- a/fs/xfs/linux-2.6/xfs_acl.c
+++ b/fs/xfs/linux-2.6/xfs_acl.c
@@ -106,7 +106,7 @@ xfs_get_acl(struct inode *inode, int type)
struct posix_acl *acl;
struct xfs_acl *xfs_acl;
int len = sizeof(struct xfs_acl);
- char *ea_name;
+ unsigned char *ea_name;
int error;
acl = get_cached_acl(inode, type);
@@ -133,7 +133,8 @@ xfs_get_acl(struct inode *inode, int type)
if (!xfs_acl)
return ERR_PTR(-ENOMEM);
- error = -xfs_attr_get(ip, ea_name, (char *)xfs_acl, &len, ATTR_ROOT);
+ error = -xfs_attr_get(ip, ea_name, (unsigned char *)xfs_acl,
+ &len, ATTR_ROOT);
if (error) {
/*
* If the attribute doesn't exist make sure we have a negative
@@ -162,7 +163,7 @@ STATIC int
xfs_set_acl(struct inode *inode, int type, struct posix_acl *acl)
{
struct xfs_inode *ip = XFS_I(inode);
- char *ea_name;
+ unsigned char *ea_name;
int error;
if (S_ISLNK(inode->i_mode))
@@ -194,7 +195,7 @@ xfs_set_acl(struct inode *inode, int type, struct posix_acl *acl)
(sizeof(struct xfs_acl_entry) *
(XFS_ACL_MAX_ENTRIES - acl->a_count));
- error = -xfs_attr_set(ip, ea_name, (char *)xfs_acl,
+ error = -xfs_attr_set(ip, ea_name, (unsigned char *)xfs_acl,
len, ATTR_ROOT);
kfree(xfs_acl);
@@ -262,7 +263,7 @@ xfs_set_mode(struct inode *inode, mode_t mode)
}
static int
-xfs_acl_exists(struct inode *inode, char *name)
+xfs_acl_exists(struct inode *inode, unsigned char *name)
{
int len = sizeof(struct xfs_acl);
diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c
index 77b8be81c769..6f76ba85f193 100644
--- a/fs/xfs/linux-2.6/xfs_buf.c
+++ b/fs/xfs/linux-2.6/xfs_buf.c
@@ -33,6 +33,7 @@
#include <linux/migrate.h>
#include <linux/backing-dev.h>
#include <linux/freezer.h>
+#include <linux/list_sort.h>
#include "xfs_sb.h"
#include "xfs_inum.h"
@@ -76,6 +77,27 @@ struct workqueue_struct *xfsconvertd_workqueue;
#define xfs_buf_deallocate(bp) \
kmem_zone_free(xfs_buf_zone, (bp));
+static inline int
+xfs_buf_is_vmapped(
+ struct xfs_buf *bp)
+{
+ /*
+ * Return true if the buffer is vmapped.
+ *
+ * The XBF_MAPPED flag is set if the buffer should be mapped, but the
+ * code is clever enough to know it doesn't have to map a single page,
+ * so the check has to be both for XBF_MAPPED and bp->b_page_count > 1.
+ */
+ return (bp->b_flags & XBF_MAPPED) && bp->b_page_count > 1;
+}
+
+static inline int
+xfs_buf_vmap_len(
+ struct xfs_buf *bp)
+{
+ return (bp->b_page_count * PAGE_SIZE) - bp->b_offset;
+}
+
/*
* Page Region interfaces.
*
@@ -314,7 +336,7 @@ xfs_buf_free(
if (bp->b_flags & (_XBF_PAGE_CACHE|_XBF_PAGES)) {
uint i;
- if ((bp->b_flags & XBF_MAPPED) && (bp->b_page_count > 1))
+ if (xfs_buf_is_vmapped(bp))
free_address(bp->b_addr - bp->b_offset);
for (i = 0; i < bp->b_page_count; i++) {
@@ -1051,22 +1073,30 @@ xfs_buf_ioerror(
}
int
-xfs_bawrite(
- void *mp,
+xfs_bwrite(
+ struct xfs_mount *mp,
struct xfs_buf *bp)
{
- trace_xfs_buf_bawrite(bp, _RET_IP_);
+ int iowait = (bp->b_flags & XBF_ASYNC) == 0;
+ int error = 0;
- ASSERT(bp->b_bn != XFS_BUF_DADDR_NULL);
+ bp->b_strat = xfs_bdstrat_cb;
+ bp->b_mount = mp;
+ bp->b_flags |= XBF_WRITE;
+ if (!iowait)
+ bp->b_flags |= _XBF_RUN_QUEUES;
xfs_buf_delwri_dequeue(bp);
+ xfs_buf_iostrategy(bp);
- bp->b_flags &= ~(XBF_READ | XBF_DELWRI | XBF_READ_AHEAD);
- bp->b_flags |= (XBF_WRITE | XBF_ASYNC | _XBF_RUN_QUEUES);
+ if (iowait) {
+ error = xfs_buf_iowait(bp);
+ if (error)
+ xfs_force_shutdown(mp, SHUTDOWN_META_IO_ERROR);
+ xfs_buf_relse(bp);
+ }
- bp->b_mount = mp;
- bp->b_strat = xfs_bdstrat_cb;
- return xfs_bdstrat_cb(bp);
+ return error;
}
void
@@ -1085,6 +1115,126 @@ xfs_bdwrite(
xfs_buf_delwri_queue(bp, 1);
}
+/*
+ * Called when we want to stop a buffer from getting written or read.
+ * We attach the EIO error, muck with its flags, and call biodone
+ * so that the proper iodone callbacks get called.
+ */
+STATIC int
+xfs_bioerror(
+ xfs_buf_t *bp)
+{
+#ifdef XFSERRORDEBUG
+ ASSERT(XFS_BUF_ISREAD(bp) || bp->b_iodone);
+#endif
+
+ /*
+ * No need to wait until the buffer is unpinned, we aren't flushing it.
+ */
+ XFS_BUF_ERROR(bp, EIO);
+
+ /*
+ * We're calling biodone, so delete XBF_DONE flag.
+ */
+ XFS_BUF_UNREAD(bp);
+ XFS_BUF_UNDELAYWRITE(bp);
+ XFS_BUF_UNDONE(bp);
+ XFS_BUF_STALE(bp);
+
+ XFS_BUF_CLR_BDSTRAT_FUNC(bp);
+ xfs_biodone(bp);
+
+ return EIO;
+}
+
+/*
+ * Same as xfs_bioerror, except that we are releasing the buffer
+ * here ourselves, and avoiding the biodone call.
+ * This is meant for userdata errors; metadata bufs come with
+ * iodone functions attached, so that we can track down errors.
+ */
+STATIC int
+xfs_bioerror_relse(
+ struct xfs_buf *bp)
+{
+ int64_t fl = XFS_BUF_BFLAGS(bp);
+ /*
+ * No need to wait until the buffer is unpinned.
+ * We aren't flushing it.
+ *
+ * chunkhold expects B_DONE to be set, whether
+ * we actually finish the I/O or not. We don't want to
+ * change that interface.
+ */
+ XFS_BUF_UNREAD(bp);
+ XFS_BUF_UNDELAYWRITE(bp);
+ XFS_BUF_DONE(bp);
+ XFS_BUF_STALE(bp);
+ XFS_BUF_CLR_IODONE_FUNC(bp);
+ XFS_BUF_CLR_BDSTRAT_FUNC(bp);
+ if (!(fl & XBF_ASYNC)) {
+ /*
+ * Mark b_error and B_ERROR _both_.
+ * Lot's of chunkcache code assumes that.
+ * There's no reason to mark error for
+ * ASYNC buffers.
+ */
+ XFS_BUF_ERROR(bp, EIO);
+ XFS_BUF_FINISH_IOWAIT(bp);
+ } else {
+ xfs_buf_relse(bp);
+ }
+
+ return EIO;
+}
+
+
+/*
+ * All xfs metadata buffers except log state machine buffers
+ * get this attached as their b_bdstrat callback function.
+ * This is so that we can catch a buffer
+ * after prematurely unpinning it to forcibly shutdown the filesystem.
+ */
+int
+xfs_bdstrat_cb(
+ struct xfs_buf *bp)
+{
+ if (XFS_FORCED_SHUTDOWN(bp->b_mount)) {
+ trace_xfs_bdstrat_shut(bp, _RET_IP_);
+ /*
+ * Metadata write that didn't get logged but
+ * written delayed anyway. These aren't associated
+ * with a transaction, and can be ignored.
+ */
+ if (!bp->b_iodone && !XFS_BUF_ISREAD(bp))
+ return xfs_bioerror_relse(bp);
+ else
+ return xfs_bioerror(bp);
+ }
+
+ xfs_buf_iorequest(bp);
+ return 0;
+}
+
+/*
+ * Wrapper around bdstrat so that we can stop data from going to disk in case
+ * we are shutting down the filesystem. Typically user data goes thru this
+ * path; one of the exceptions is the superblock.
+ */
+void
+xfsbdstrat(
+ struct xfs_mount *mp,
+ struct xfs_buf *bp)
+{
+ if (XFS_FORCED_SHUTDOWN(mp)) {
+ trace_xfs_bdstrat_shut(bp, _RET_IP_);
+ xfs_bioerror_relse(bp);
+ return;
+ }
+
+ xfs_buf_iorequest(bp);
+}
+
STATIC void
_xfs_buf_ioend(
xfs_buf_t *bp,
@@ -1107,6 +1257,9 @@ xfs_buf_bio_end_io(
xfs_buf_ioerror(bp, -error);
+ if (!error && xfs_buf_is_vmapped(bp) && (bp->b_flags & XBF_READ))
+ invalidate_kernel_vmap_range(bp->b_addr, xfs_buf_vmap_len(bp));
+
do {
struct page *page = bvec->bv_page;
@@ -1216,6 +1369,10 @@ next_chunk:
submit_io:
if (likely(bio->bi_size)) {
+ if (xfs_buf_is_vmapped(bp)) {
+ flush_kernel_vmap_range(bp->b_addr,
+ xfs_buf_vmap_len(bp));
+ }
submit_bio(rw, bio);
if (size)
goto next_chunk;
@@ -1296,7 +1453,7 @@ xfs_buf_iomove(
xfs_buf_t *bp, /* buffer to process */
size_t boff, /* starting buffer offset */
size_t bsize, /* length to copy */
- caddr_t data, /* data address */
+ void *data, /* data address */
xfs_buf_rw_t mode) /* read/write/zero flag */
{
size_t bend, cpoff, csize;
@@ -1378,8 +1535,8 @@ xfs_alloc_bufhash(
btp->bt_hashshift = external ? 3 : 8; /* 8 or 256 buckets */
btp->bt_hashmask = (1 << btp->bt_hashshift) - 1;
- btp->bt_hash = kmem_zalloc((1 << btp->bt_hashshift) *
- sizeof(xfs_bufhash_t), KM_SLEEP | KM_LARGE);
+ btp->bt_hash = kmem_zalloc_large((1 << btp->bt_hashshift) *
+ sizeof(xfs_bufhash_t));
for (i = 0; i < (1 << btp->bt_hashshift); i++) {
spin_lock_init(&btp->bt_hash[i].bh_lock);
INIT_LIST_HEAD(&btp->bt_hash[i].bh_list);
@@ -1390,7 +1547,7 @@ STATIC void
xfs_free_bufhash(
xfs_buftarg_t *btp)
{
- kmem_free(btp->bt_hash);
+ kmem_free_large(btp->bt_hash);
btp->bt_hash = NULL;
}
@@ -1595,6 +1752,11 @@ xfs_buf_delwri_queue(
list_del(&bp->b_list);
}
+ if (list_empty(dwq)) {
+ /* start xfsbufd as it is about to have something to do */
+ wake_up_process(bp->b_target->bt_task);
+ }
+
bp->b_flags |= _XBF_DELWRI_Q;
list_add_tail(&bp->b_list, dwq);
bp->b_queuetime = jiffies;
@@ -1626,6 +1788,35 @@ xfs_buf_delwri_dequeue(
trace_xfs_buf_delwri_dequeue(bp, _RET_IP_);
}
+/*
+ * If a delwri buffer needs to be pushed before it has aged out, then promote
+ * it to the head of the delwri queue so that it will be flushed on the next
+ * xfsbufd run. We do this by resetting the queuetime of the buffer to be older
+ * than the age currently needed to flush the buffer. Hence the next time the
+ * xfsbufd sees it is guaranteed to be considered old enough to flush.
+ */
+void
+xfs_buf_delwri_promote(
+ struct xfs_buf *bp)
+{
+ struct xfs_buftarg *btp = bp->b_target;
+ long age = xfs_buf_age_centisecs * msecs_to_jiffies(10) + 1;
+
+ ASSERT(bp->b_flags & XBF_DELWRI);
+ ASSERT(bp->b_flags & _XBF_DELWRI_Q);
+
+ /*
+ * Check the buffer age before locking the delayed write queue as we
+ * don't need to promote buffers that are already past the flush age.
+ */
+ if (bp->b_queuetime < jiffies - age)
+ return;
+ bp->b_queuetime = jiffies - age;
+ spin_lock(&btp->bt_delwrite_lock);
+ list_move(&bp->b_list, &btp->bt_delwrite_queue);
+ spin_unlock(&btp->bt_delwrite_lock);
+}
+
STATIC void
xfs_buf_runall_queues(
struct workqueue_struct *queue)
@@ -1644,6 +1835,8 @@ xfsbufd_wakeup(
list_for_each_entry(btp, &xfs_buftarg_list, bt_list) {
if (test_bit(XBT_FORCE_SLEEP, &btp->bt_flags))
continue;
+ if (list_empty(&btp->bt_delwrite_queue))
+ continue;
set_bit(XBT_FORCE_FLUSH, &btp->bt_flags);
wake_up_process(btp->bt_task);
}
@@ -1694,20 +1887,53 @@ xfs_buf_delwri_split(
}
+/*
+ * Compare function is more complex than it needs to be because
+ * the return value is only 32 bits and we are doing comparisons
+ * on 64 bit values
+ */
+static int
+xfs_buf_cmp(
+ void *priv,
+ struct list_head *a,
+ struct list_head *b)
+{
+ struct xfs_buf *ap = container_of(a, struct xfs_buf, b_list);
+ struct xfs_buf *bp = container_of(b, struct xfs_buf, b_list);
+ xfs_daddr_t diff;
+
+ diff = ap->b_bn - bp->b_bn;
+ if (diff < 0)
+ return -1;
+ if (diff > 0)
+ return 1;
+ return 0;
+}
+
+void
+xfs_buf_delwri_sort(
+ xfs_buftarg_t *target,
+ struct list_head *list)
+{
+ list_sort(NULL, list, xfs_buf_cmp);
+}
+
STATIC int
xfsbufd(
void *data)
{
- struct list_head tmp;
- xfs_buftarg_t *target = (xfs_buftarg_t *)data;
- int count;
- xfs_buf_t *bp;
+ xfs_buftarg_t *target = (xfs_buftarg_t *)data;
current->flags |= PF_MEMALLOC;
set_freezable();
do {
+ long age = xfs_buf_age_centisecs * msecs_to_jiffies(10);
+ long tout = xfs_buf_timer_centisecs * msecs_to_jiffies(10);
+ int count = 0;
+ struct list_head tmp;
+
if (unlikely(freezing(current))) {
set_bit(XBT_FORCE_SLEEP, &target->bt_flags);
refrigerator();
@@ -1715,17 +1941,16 @@ xfsbufd(
clear_bit(XBT_FORCE_SLEEP, &target->bt_flags);
}
- schedule_timeout_interruptible(
- xfs_buf_timer_centisecs * msecs_to_jiffies(10));
+ /* sleep for a long time if there is nothing to do. */
+ if (list_empty(&target->bt_delwrite_queue))
+ tout = MAX_SCHEDULE_TIMEOUT;
+ schedule_timeout_interruptible(tout);
- xfs_buf_delwri_split(target, &tmp,
- xfs_buf_age_centisecs * msecs_to_jiffies(10));
-
- count = 0;
+ xfs_buf_delwri_split(target, &tmp, age);
+ list_sort(NULL, &tmp, xfs_buf_cmp);
while (!list_empty(&tmp)) {
- bp = list_entry(tmp.next, xfs_buf_t, b_list);
- ASSERT(target == bp->b_target);
-
+ struct xfs_buf *bp;
+ bp = list_first_entry(&tmp, struct xfs_buf, b_list);
list_del_init(&bp->b_list);
xfs_buf_iostrategy(bp);
count++;
@@ -1751,42 +1976,45 @@ xfs_flush_buftarg(
xfs_buftarg_t *target,
int wait)
{
- struct list_head tmp;
- xfs_buf_t *bp, *n;
+ xfs_buf_t *bp;
int pincount = 0;
+ LIST_HEAD(tmp_list);
+ LIST_HEAD(wait_list);
xfs_buf_runall_queues(xfsconvertd_workqueue);
xfs_buf_runall_queues(xfsdatad_workqueue);
xfs_buf_runall_queues(xfslogd_workqueue);
set_bit(XBT_FORCE_FLUSH, &target->bt_flags);
- pincount = xfs_buf_delwri_split(target, &tmp, 0);
+ pincount = xfs_buf_delwri_split(target, &tmp_list, 0);
/*
- * Dropped the delayed write list lock, now walk the temporary list
+ * Dropped the delayed write list lock, now walk the temporary list.
+ * All I/O is issued async and then if we need to wait for completion
+ * we do that after issuing all the IO.
*/
- list_for_each_entry_safe(bp, n, &tmp, b_list) {
+ list_sort(NULL, &tmp_list, xfs_buf_cmp);
+ while (!list_empty(&tmp_list)) {
+ bp = list_first_entry(&tmp_list, struct xfs_buf, b_list);
ASSERT(target == bp->b_target);
- if (wait)
+ list_del_init(&bp->b_list);
+ if (wait) {
bp->b_flags &= ~XBF_ASYNC;
- else
- list_del_init(&bp->b_list);
-
+ list_add(&bp->b_list, &wait_list);
+ }
xfs_buf_iostrategy(bp);
}
- if (wait)
+ if (wait) {
+ /* Expedite and wait for IO to complete. */
blk_run_address_space(target->bt_mapping);
+ while (!list_empty(&wait_list)) {
+ bp = list_first_entry(&wait_list, struct xfs_buf, b_list);
- /*
- * Remaining list items must be flushed before returning
- */
- while (!list_empty(&tmp)) {
- bp = list_entry(tmp.next, xfs_buf_t, b_list);
-
- list_del_init(&bp->b_list);
- xfs_iowait(bp);
- xfs_buf_relse(bp);
+ list_del_init(&bp->b_list);
+ xfs_iowait(bp);
+ xfs_buf_relse(bp);
+ }
}
return pincount;
diff --git a/fs/xfs/linux-2.6/xfs_buf.h b/fs/xfs/linux-2.6/xfs_buf.h
index a34c7b54822d..386e7361e50e 100644
--- a/fs/xfs/linux-2.6/xfs_buf.h
+++ b/fs/xfs/linux-2.6/xfs_buf.h
@@ -232,13 +232,17 @@ extern void xfs_buf_lock(xfs_buf_t *);
extern void xfs_buf_unlock(xfs_buf_t *);
/* Buffer Read and Write Routines */
-extern int xfs_bawrite(void *mp, xfs_buf_t *bp);
+extern int xfs_bwrite(struct xfs_mount *mp, struct xfs_buf *bp);
extern void xfs_bdwrite(void *mp, xfs_buf_t *bp);
+
+extern void xfsbdstrat(struct xfs_mount *, struct xfs_buf *);
+extern int xfs_bdstrat_cb(struct xfs_buf *);
+
extern void xfs_buf_ioend(xfs_buf_t *, int);
extern void xfs_buf_ioerror(xfs_buf_t *, int);
extern int xfs_buf_iorequest(xfs_buf_t *);
extern int xfs_buf_iowait(xfs_buf_t *);
-extern void xfs_buf_iomove(xfs_buf_t *, size_t, size_t, xfs_caddr_t,
+extern void xfs_buf_iomove(xfs_buf_t *, size_t, size_t, void *,
xfs_buf_rw_t);
static inline int xfs_buf_iostrategy(xfs_buf_t *bp)
@@ -261,6 +265,7 @@ extern int xfs_buf_ispin(xfs_buf_t *);
/* Delayed Write Buffer Routines */
extern void xfs_buf_delwri_dequeue(xfs_buf_t *);
+extern void xfs_buf_delwri_promote(xfs_buf_t *);
/* Buffer Daemon Setup Routines */
extern int xfs_buf_init(void);
@@ -270,33 +275,19 @@ extern void xfs_buf_terminate(void);
({ char __b[BDEVNAME_SIZE]; bdevname((target)->bt_bdev, __b); __b; })
-#define XFS_B_ASYNC XBF_ASYNC
-#define XFS_B_DELWRI XBF_DELWRI
-#define XFS_B_READ XBF_READ
-#define XFS_B_WRITE XBF_WRITE
-#define XFS_B_STALE XBF_STALE
-
-#define XFS_BUF_TRYLOCK XBF_TRYLOCK
-#define XFS_INCORE_TRYLOCK XBF_TRYLOCK
-#define XFS_BUF_LOCK XBF_LOCK
-#define XFS_BUF_MAPPED XBF_MAPPED
-
-#define BUF_BUSY XBF_DONT_BLOCK
-
#define XFS_BUF_BFLAGS(bp) ((bp)->b_flags)
#define XFS_BUF_ZEROFLAGS(bp) ((bp)->b_flags &= \
~(XBF_READ|XBF_WRITE|XBF_ASYNC|XBF_DELWRI|XBF_ORDERED))
-#define XFS_BUF_STALE(bp) ((bp)->b_flags |= XFS_B_STALE)
-#define XFS_BUF_UNSTALE(bp) ((bp)->b_flags &= ~XFS_B_STALE)
-#define XFS_BUF_ISSTALE(bp) ((bp)->b_flags & XFS_B_STALE)
+#define XFS_BUF_STALE(bp) ((bp)->b_flags |= XBF_STALE)
+#define XFS_BUF_UNSTALE(bp) ((bp)->b_flags &= ~XBF_STALE)
+#define XFS_BUF_ISSTALE(bp) ((bp)->b_flags & XBF_STALE)
#define XFS_BUF_SUPER_STALE(bp) do { \
XFS_BUF_STALE(bp); \
xfs_buf_delwri_dequeue(bp); \
XFS_BUF_DONE(bp); \
} while (0)
-#define XFS_BUF_MANAGE XBF_FS_MANAGED
#define XFS_BUF_UNMANAGE(bp) ((bp)->b_flags &= ~XBF_FS_MANAGED)
#define XFS_BUF_DELAYWRITE(bp) ((bp)->b_flags |= XBF_DELWRI)
@@ -385,31 +376,11 @@ static inline void xfs_buf_relse(xfs_buf_t *bp)
#define xfs_biomove(bp, off, len, data, rw) \
xfs_buf_iomove((bp), (off), (len), (data), \
- ((rw) == XFS_B_WRITE) ? XBRW_WRITE : XBRW_READ)
+ ((rw) == XBF_WRITE) ? XBRW_WRITE : XBRW_READ)
#define xfs_biozero(bp, off, len) \
xfs_buf_iomove((bp), (off), (len), NULL, XBRW_ZERO)
-
-static inline int XFS_bwrite(xfs_buf_t *bp)
-{
- int iowait = (bp->b_flags & XBF_ASYNC) == 0;
- int error = 0;
-
- if (!iowait)
- bp->b_flags |= _XBF_RUN_QUEUES;
-
- xfs_buf_delwri_dequeue(bp);
- xfs_buf_iostrategy(bp);
- if (iowait) {
- error = xfs_buf_iowait(bp);
- xfs_buf_relse(bp);
- }
- return error;
-}
-
-#define XFS_bdstrat(bp) xfs_buf_iorequest(bp)
-
#define xfs_iowait(bp) xfs_buf_iowait(bp)
#define xfs_baread(target, rablkno, ralen) \
@@ -424,6 +395,7 @@ extern void xfs_free_buftarg(struct xfs_mount *, struct xfs_buftarg *);
extern void xfs_wait_buftarg(xfs_buftarg_t *);
extern int xfs_setsize_buftarg(xfs_buftarg_t *, unsigned int, unsigned int);
extern int xfs_flush_buftarg(xfs_buftarg_t *, int);
+
#ifdef CONFIG_KDB_MODULES
extern struct list_head *xfs_get_buftarg_list(void);
#endif
diff --git a/fs/xfs/linux-2.6/xfs_fs_subr.c b/fs/xfs/linux-2.6/xfs_fs_subr.c
index 7501b85fd860..b6918d76bc7b 100644
--- a/fs/xfs/linux-2.6/xfs_fs_subr.c
+++ b/fs/xfs/linux-2.6/xfs_fs_subr.c
@@ -79,7 +79,7 @@ xfs_flush_pages(
xfs_iflags_clear(ip, XFS_ITRUNCATED);
ret = -filemap_fdatawrite(mapping);
}
- if (flags & XFS_B_ASYNC)
+ if (flags & XBF_ASYNC)
return ret;
ret2 = xfs_wait_on_pages(ip, first, last);
if (!ret)
diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/linux-2.6/xfs_ioctl.c
index a034cf624437..4ea1ee18aded 100644
--- a/fs/xfs/linux-2.6/xfs_ioctl.c
+++ b/fs/xfs/linux-2.6/xfs_ioctl.c
@@ -447,12 +447,12 @@ xfs_attrlist_by_handle(
int
xfs_attrmulti_attr_get(
struct inode *inode,
- char *name,
- char __user *ubuf,
+ unsigned char *name,
+ unsigned char __user *ubuf,
__uint32_t *len,
__uint32_t flags)
{
- char *kbuf;
+ unsigned char *kbuf;
int error = EFAULT;
if (*len > XATTR_SIZE_MAX)
@@ -476,12 +476,12 @@ xfs_attrmulti_attr_get(
int
xfs_attrmulti_attr_set(
struct inode *inode,
- char *name,
- const char __user *ubuf,
+ unsigned char *name,
+ const unsigned char __user *ubuf,
__uint32_t len,
__uint32_t flags)
{
- char *kbuf;
+ unsigned char *kbuf;
int error = EFAULT;
if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
@@ -501,7 +501,7 @@ xfs_attrmulti_attr_set(
int
xfs_attrmulti_attr_remove(
struct inode *inode,
- char *name,
+ unsigned char *name,
__uint32_t flags)
{
if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
@@ -519,7 +519,7 @@ xfs_attrmulti_by_handle(
xfs_fsop_attrmulti_handlereq_t am_hreq;
struct dentry *dentry;
unsigned int i, size;
- char *attr_name;
+ unsigned char *attr_name;
if (!capable(CAP_SYS_ADMIN))
return -XFS_ERROR(EPERM);
@@ -547,7 +547,7 @@ xfs_attrmulti_by_handle(
error = 0;
for (i = 0; i < am_hreq.opcount; i++) {
- ops[i].am_error = strncpy_from_user(attr_name,
+ ops[i].am_error = strncpy_from_user((char *)attr_name,
ops[i].am_attrname, MAXNAMELEN);
if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
error = -ERANGE;
@@ -1431,6 +1431,9 @@ xfs_file_ioctl(
if (!capable(CAP_SYS_ADMIN))
return -EPERM;
+ if (mp->m_flags & XFS_MOUNT_RDONLY)
+ return -XFS_ERROR(EROFS);
+
if (copy_from_user(&inout, arg, sizeof(inout)))
return -XFS_ERROR(EFAULT);
diff --git a/fs/xfs/linux-2.6/xfs_ioctl.h b/fs/xfs/linux-2.6/xfs_ioctl.h
index 7bd7c6afc1eb..d56173b34a2a 100644
--- a/fs/xfs/linux-2.6/xfs_ioctl.h
+++ b/fs/xfs/linux-2.6/xfs_ioctl.h
@@ -45,23 +45,23 @@ xfs_readlink_by_handle(
extern int
xfs_attrmulti_attr_get(
struct inode *inode,
- char *name,
- char __user *ubuf,
+ unsigned char *name,
+ unsigned char __user *ubuf,
__uint32_t *len,
__uint32_t flags);
extern int
- xfs_attrmulti_attr_set(
+xfs_attrmulti_attr_set(
struct inode *inode,
- char *name,
- const char __user *ubuf,
+ unsigned char *name,
+ const unsigned char __user *ubuf,
__uint32_t len,
__uint32_t flags);
extern int
xfs_attrmulti_attr_remove(
struct inode *inode,
- char *name,
+ unsigned char *name,
__uint32_t flags);
extern struct dentry *
diff --git a/fs/xfs/linux-2.6/xfs_ioctl32.c b/fs/xfs/linux-2.6/xfs_ioctl32.c
index be1527b1670c..0bf6d61f0528 100644
--- a/fs/xfs/linux-2.6/xfs_ioctl32.c
+++ b/fs/xfs/linux-2.6/xfs_ioctl32.c
@@ -411,7 +411,7 @@ xfs_compat_attrmulti_by_handle(
compat_xfs_fsop_attrmulti_handlereq_t am_hreq;
struct dentry *dentry;
unsigned int i, size;
- char *attr_name;
+ unsigned char *attr_name;
if (!capable(CAP_SYS_ADMIN))
return -XFS_ERROR(EPERM);
@@ -440,7 +440,7 @@ xfs_compat_attrmulti_by_handle(
error = 0;
for (i = 0; i < am_hreq.opcount; i++) {
- ops[i].am_error = strncpy_from_user(attr_name,
+ ops[i].am_error = strncpy_from_user((char *)attr_name,
compat_ptr(ops[i].am_attrname),
MAXNAMELEN);
if (ops[i].am_error == 0 || ops[i].am_error == MAXNAMELEN)
diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c
index 225946012d0b..e8566bbf0f00 100644
--- a/fs/xfs/linux-2.6/xfs_iops.c
+++ b/fs/xfs/linux-2.6/xfs_iops.c
@@ -140,10 +140,10 @@ xfs_init_security(
struct xfs_inode *ip = XFS_I(inode);
size_t length;
void *value;
- char *name;
+ unsigned char *name;
int error;
- error = security_inode_init_security(inode, dir, &name,
+ error = security_inode_init_security(inode, dir, (char **)&name,
&value, &length);
if (error) {
if (error == -EOPNOTSUPP)
diff --git a/fs/xfs/linux-2.6/xfs_lrw.c b/fs/xfs/linux-2.6/xfs_lrw.c
index 0d32457abef1..eac6f80d786d 100644
--- a/fs/xfs/linux-2.6/xfs_lrw.c
+++ b/fs/xfs/linux-2.6/xfs_lrw.c
@@ -630,18 +630,9 @@ start:
* by root. This keeps people from modifying setuid and
* setgid binaries.
*/
-
- if (((xip->i_d.di_mode & S_ISUID) ||
- ((xip->i_d.di_mode & (S_ISGID | S_IXGRP)) ==
- (S_ISGID | S_IXGRP))) &&
- !capable(CAP_FSETID)) {
- error = xfs_write_clear_setuid(xip);
- if (likely(!error))
- error = -file_remove_suid(file);
- if (unlikely(error)) {
- goto out_unlock_internal;
- }
- }
+ error = -file_remove_suid(file);
+ if (unlikely(error))
+ goto out_unlock_internal;
/* We can write back this queue in page reclaim */
current->backing_dev_info = mapping->backing_dev_info;
@@ -784,53 +775,6 @@ write_retry:
}
/*
- * All xfs metadata buffers except log state machine buffers
- * get this attached as their b_bdstrat callback function.
- * This is so that we can catch a buffer
- * after prematurely unpinning it to forcibly shutdown the filesystem.
- */
-int
-xfs_bdstrat_cb(struct xfs_buf *bp)
-{
- if (XFS_FORCED_SHUTDOWN(bp->b_mount)) {
- trace_xfs_bdstrat_shut(bp, _RET_IP_);
- /*
- * Metadata write that didn't get logged but
- * written delayed anyway. These aren't associated
- * with a transaction, and can be ignored.
- */
- if (XFS_BUF_IODONE_FUNC(bp) == NULL &&
- (XFS_BUF_ISREAD(bp)) == 0)
- return (xfs_bioerror_relse(bp));
- else
- return (xfs_bioerror(bp));
- }
-
- xfs_buf_iorequest(bp);
- return 0;
-}
-
-/*
- * Wrapper around bdstrat so that we can stop data from going to disk in case
- * we are shutting down the filesystem. Typically user data goes thru this
- * path; one of the exceptions is the superblock.
- */
-void
-xfsbdstrat(
- struct xfs_mount *mp,
- struct xfs_buf *bp)
-{
- ASSERT(mp);
- if (!XFS_FORCED_SHUTDOWN(mp)) {
- xfs_buf_iorequest(bp);
- return;
- }
-
- trace_xfs_bdstrat_shut(bp, _RET_IP_);
- xfs_bioerror_relse(bp);
-}
-
-/*
* If the underlying (data/log/rt) device is readonly, there are some
* operations that cannot proceed.
*/
diff --git a/fs/xfs/linux-2.6/xfs_lrw.h b/fs/xfs/linux-2.6/xfs_lrw.h
index d1f7789c7ffb..342ae8c0d011 100644
--- a/fs/xfs/linux-2.6/xfs_lrw.h
+++ b/fs/xfs/linux-2.6/xfs_lrw.h
@@ -22,9 +22,6 @@ struct xfs_mount;
struct xfs_inode;
struct xfs_buf;
-/* errors from xfsbdstrat() must be extracted from the buffer */
-extern void xfsbdstrat(struct xfs_mount *, struct xfs_buf *);
-extern int xfs_bdstrat_cb(struct xfs_buf *);
extern int xfs_dev_is_read_only(struct xfs_mount *, char *);
extern int xfs_zero_eof(struct xfs_inode *, xfs_off_t, xfs_fsize_t);
diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c
index 77414db10dc2..71345a370d9f 100644
--- a/fs/xfs/linux-2.6/xfs_super.c
+++ b/fs/xfs/linux-2.6/xfs_super.c
@@ -877,12 +877,11 @@ xfsaild(
{
struct xfs_ail *ailp = data;
xfs_lsn_t last_pushed_lsn = 0;
- long tout = 0;
+ long tout = 0; /* milliseconds */
while (!kthread_should_stop()) {
- if (tout)
- schedule_timeout_interruptible(msecs_to_jiffies(tout));
- tout = 1000;
+ schedule_timeout_interruptible(tout ?
+ msecs_to_jiffies(tout) : MAX_SCHEDULE_TIMEOUT);
/* swsusp */
try_to_freeze();
@@ -1022,59 +1021,108 @@ xfs_fs_dirty_inode(
XFS_I(inode)->i_update_core = 1;
}
-/*
- * Attempt to flush the inode, this will actually fail
- * if the inode is pinned, but we dirty the inode again
- * at the point when it is unpinned after a log write,
- * since this is when the inode itself becomes flushable.
- */
+STATIC int
+xfs_log_inode(
+ struct xfs_inode *ip)
+{
+ struct xfs_mount *mp = ip->i_mount;
+ struct xfs_trans *tp;
+ int error;
+
+ xfs_iunlock(ip, XFS_ILOCK_SHARED);
+ tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS);
+ error = xfs_trans_reserve(tp, 0, XFS_FSYNC_TS_LOG_RES(mp), 0, 0, 0);
+
+ if (error) {
+ xfs_trans_cancel(tp, 0);
+ /* we need to return with the lock hold shared */
+ xfs_ilock(ip, XFS_ILOCK_SHARED);
+ return error;
+ }
+
+ xfs_ilock(ip, XFS_ILOCK_EXCL);
+
+ /*
+ * Note - it's possible that we might have pushed ourselves out of the
+ * way during trans_reserve which would flush the inode. But there's
+ * no guarantee that the inode buffer has actually gone out yet (it's
+ * delwri). Plus the buffer could be pinned anyway if it's part of
+ * an inode in another recent transaction. So we play it safe and
+ * fire off the transaction anyway.
+ */
+ xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
+ xfs_trans_ihold(tp, ip);
+ xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
+ xfs_trans_set_sync(tp);
+ error = xfs_trans_commit(tp, 0);
+ xfs_ilock_demote(ip, XFS_ILOCK_EXCL);
+
+ return error;
+}
+
STATIC int
xfs_fs_write_inode(
struct inode *inode,
- int sync)
+ struct writeback_control *wbc)
{
struct xfs_inode *ip = XFS_I(inode);
struct xfs_mount *mp = ip->i_mount;
- int error = 0;
+ int error = EAGAIN;
xfs_itrace_entry(ip);
if (XFS_FORCED_SHUTDOWN(mp))
return XFS_ERROR(EIO);
- if (sync) {
- error = xfs_wait_on_pages(ip, 0, -1);
- if (error)
+ if (wbc->sync_mode == WB_SYNC_ALL) {
+ /*
+ * Make sure the inode has hit stable storage. By using the
+ * log and the fsync transactions we reduce the IOs we have
+ * to do here from two (log and inode) to just the log.
+ *
+ * Note: We still need to do a delwri write of the inode after
+ * this to flush it to the backing buffer so that bulkstat
+ * works properly if this is the first time the inode has been
+ * written. Because we hold the ilock atomically over the
+ * transaction commit and the inode flush we are guaranteed
+ * that the inode is not pinned when it returns. If the flush
+ * lock is already held, then the inode has already been
+ * flushed once and we don't need to flush it again. Hence
+ * the code will only flush the inode if it isn't already
+ * being flushed.
+ */
+ xfs_ilock(ip, XFS_ILOCK_SHARED);
+ if (ip->i_update_core) {
+ error = xfs_log_inode(ip);
+ if (error)
+ goto out_unlock;
+ }
+ } else {
+ /*
+ * We make this non-blocking if the inode is contended, return
+ * EAGAIN to indicate to the caller that they did not succeed.
+ * This prevents the flush path from blocking on inodes inside
+ * another operation right now, they get caught later by xfs_sync.
+ */
+ if (!xfs_ilock_nowait(ip, XFS_ILOCK_SHARED))
goto out;
}
- /*
- * Bypass inodes which have already been cleaned by
- * the inode flush clustering code inside xfs_iflush
- */
- if (xfs_inode_clean(ip))
- goto out;
+ if (xfs_ipincount(ip) || !xfs_iflock_nowait(ip))
+ goto out_unlock;
/*
- * We make this non-blocking if the inode is contended, return
- * EAGAIN to indicate to the caller that they did not succeed.
- * This prevents the flush path from blocking on inodes inside
- * another operation right now, they get caught later by xfs_sync.
+ * Now we have the flush lock and the inode is not pinned, we can check
+ * if the inode is really clean as we know that there are no pending
+ * transaction completions, it is not waiting on the delayed write
+ * queue and there is no IO in progress.
*/
- if (sync) {
- xfs_ilock(ip, XFS_ILOCK_SHARED);
- xfs_iflock(ip);
-
- error = xfs_iflush(ip, XFS_IFLUSH_SYNC);
- } else {
- error = EAGAIN;
- if (!xfs_ilock_nowait(ip, XFS_ILOCK_SHARED))
- goto out;
- if (xfs_ipincount(ip) || !xfs_iflock_nowait(ip))
- goto out_unlock;
-
- error = xfs_iflush(ip, XFS_IFLUSH_ASYNC_NOBLOCK);
+ if (xfs_inode_clean(ip)) {
+ xfs_ifunlock(ip);
+ error = 0;
+ goto out_unlock;
}
+ error = xfs_iflush(ip, 0);
out_unlock:
xfs_iunlock(ip, XFS_ILOCK_SHARED);
@@ -1257,6 +1305,29 @@ xfs_fs_statfs(
return 0;
}
+STATIC void
+xfs_save_resvblks(struct xfs_mount *mp)
+{
+ __uint64_t resblks = 0;
+
+ mp->m_resblks_save = mp->m_resblks;
+ xfs_reserve_blocks(mp, &resblks, NULL);
+}
+
+STATIC void
+xfs_restore_resvblks(struct xfs_mount *mp)
+{
+ __uint64_t resblks;
+
+ if (mp->m_resblks_save) {
+ resblks = mp->m_resblks_save;
+ mp->m_resblks_save = 0;
+ } else
+ resblks = xfs_default_resblks(mp);
+
+ xfs_reserve_blocks(mp, &resblks, NULL);
+}
+
STATIC int
xfs_fs_remount(
struct super_block *sb,
@@ -1336,11 +1407,27 @@ xfs_fs_remount(
}
mp->m_update_flags = 0;
}
+
+ /*
+ * Fill out the reserve pool if it is empty. Use the stashed
+ * value if it is non-zero, otherwise go with the default.
+ */
+ xfs_restore_resvblks(mp);
}
/* rw -> ro */
if (!(mp->m_flags & XFS_MOUNT_RDONLY) && (*flags & MS_RDONLY)) {
+ /*
+ * After we have synced the data but before we sync the
+ * metadata, we need to free up the reserve block pool so that
+ * the used block count in the superblock on disk is correct at
+ * the end of the remount. Stash the current reserve pool size
+ * so that if we get remounted rw, we can return it to the same
+ * size.
+ */
+
xfs_quiesce_data(mp);
+ xfs_save_resvblks(mp);
xfs_quiesce_attr(mp);
mp->m_flags |= XFS_MOUNT_RDONLY;
}
@@ -1359,11 +1446,22 @@ xfs_fs_freeze(
{
struct xfs_mount *mp = XFS_M(sb);
+ xfs_save_resvblks(mp);
xfs_quiesce_attr(mp);
return -xfs_fs_log_dummy(mp);
}
STATIC int
+xfs_fs_unfreeze(
+ struct super_block *sb)
+{
+ struct xfs_mount *mp = XFS_M(sb);
+
+ xfs_restore_resvblks(mp);
+ return 0;
+}
+
+STATIC int
xfs_fs_show_options(
struct seq_file *m,
struct vfsmount *mnt)
@@ -1585,6 +1683,7 @@ static const struct super_operations xfs_super_operations = {
.put_super = xfs_fs_put_super,
.sync_fs = xfs_fs_sync_fs,
.freeze_fs = xfs_fs_freeze,
+ .unfreeze_fs = xfs_fs_unfreeze,
.statfs = xfs_fs_statfs,
.remount_fs = xfs_fs_remount,
.show_options = xfs_fs_show_options,
diff --git a/fs/xfs/linux-2.6/xfs_sync.c b/fs/xfs/linux-2.6/xfs_sync.c
index 1f5e4bb5e970..a9f6d20aff41 100644
--- a/fs/xfs/linux-2.6/xfs_sync.c
+++ b/fs/xfs/linux-2.6/xfs_sync.c
@@ -90,14 +90,13 @@ xfs_inode_ag_lookup(
STATIC int
xfs_inode_ag_walk(
struct xfs_mount *mp,
- xfs_agnumber_t ag,
+ struct xfs_perag *pag,
int (*execute)(struct xfs_inode *ip,
struct xfs_perag *pag, int flags),
int flags,
int tag,
int exclusive)
{
- struct xfs_perag *pag = &mp->m_perag[ag];
uint32_t first_index;
int last_error = 0;
int skipped;
@@ -141,8 +140,6 @@ restart:
delay(1);
goto restart;
}
-
- xfs_put_perag(mp, pag);
return last_error;
}
@@ -160,10 +157,16 @@ xfs_inode_ag_iterator(
xfs_agnumber_t ag;
for (ag = 0; ag < mp->m_sb.sb_agcount; ag++) {
- if (!mp->m_perag[ag].pag_ici_init)
+ struct xfs_perag *pag;
+
+ pag = xfs_perag_get(mp, ag);
+ if (!pag->pag_ici_init) {
+ xfs_perag_put(pag);
continue;
- error = xfs_inode_ag_walk(mp, ag, execute, flags, tag,
+ }
+ error = xfs_inode_ag_walk(mp, pag, execute, flags, tag,
exclusive);
+ xfs_perag_put(pag);
if (error) {
last_error = error;
if (error == EFSCORRUPTED)
@@ -231,7 +234,7 @@ xfs_sync_inode_data(
}
error = xfs_flush_pages(ip, 0, -1, (flags & SYNC_WAIT) ?
- 0 : XFS_B_ASYNC, FI_NONE);
+ 0 : XBF_ASYNC, FI_NONE);
xfs_iunlock(ip, XFS_IOLOCK_SHARED);
out_wait:
@@ -267,8 +270,7 @@ xfs_sync_inode_attr(
goto out_unlock;
}
- error = xfs_iflush(ip, (flags & SYNC_WAIT) ?
- XFS_IFLUSH_SYNC : XFS_IFLUSH_DELWRI);
+ error = xfs_iflush(ip, flags);
out_unlock:
xfs_iunlock(ip, XFS_ILOCK_SHARED);
@@ -293,10 +295,7 @@ xfs_sync_data(
if (error)
return XFS_ERROR(error);
- xfs_log_force(mp, 0,
- (flags & SYNC_WAIT) ?
- XFS_LOG_FORCE | XFS_LOG_SYNC :
- XFS_LOG_FORCE);
+ xfs_log_force(mp, (flags & SYNC_WAIT) ? XFS_LOG_SYNC : 0);
return 0;
}
@@ -322,10 +321,6 @@ xfs_commit_dummy_trans(
struct xfs_inode *ip = mp->m_rootip;
struct xfs_trans *tp;
int error;
- int log_flags = XFS_LOG_FORCE;
-
- if (flags & SYNC_WAIT)
- log_flags |= XFS_LOG_SYNC;
/*
* Put a dummy transaction in the log to tell recovery
@@ -347,11 +342,11 @@ xfs_commit_dummy_trans(
xfs_iunlock(ip, XFS_ILOCK_EXCL);
/* the log force ensures this transaction is pushed to disk */
- xfs_log_force(mp, 0, log_flags);
+ xfs_log_force(mp, (flags & SYNC_WAIT) ? XFS_LOG_SYNC : 0);
return error;
}
-int
+STATIC int
xfs_sync_fsdata(
struct xfs_mount *mp,
int flags)
@@ -367,7 +362,7 @@ xfs_sync_fsdata(
if (flags & SYNC_TRYLOCK) {
ASSERT(!(flags & SYNC_WAIT));
- bp = xfs_getsb(mp, XFS_BUF_TRYLOCK);
+ bp = xfs_getsb(mp, XBF_TRYLOCK);
if (!bp)
goto out;
@@ -387,7 +382,7 @@ xfs_sync_fsdata(
* become pinned in between there and here.
*/
if (XFS_BUF_ISPINNED(bp))
- xfs_log_force(mp, 0, XFS_LOG_FORCE);
+ xfs_log_force(mp, 0);
}
@@ -448,9 +443,6 @@ xfs_quiesce_data(
xfs_sync_data(mp, SYNC_WAIT);
xfs_qm_sync(mp, SYNC_WAIT);
- /* drop inode references pinned by filestreams */
- xfs_filestream_flush(mp);
-
/* write superblock and hoover up shutdown errors */
error = xfs_sync_fsdata(mp, SYNC_WAIT);
@@ -467,16 +459,18 @@ xfs_quiesce_fs(
{
int count = 0, pincount;
+ xfs_reclaim_inodes(mp, 0);
xfs_flush_buftarg(mp->m_ddev_targp, 0);
- xfs_reclaim_inodes(mp, XFS_IFLUSH_DELWRI_ELSE_ASYNC);
/*
* This loop must run at least twice. The first instance of the loop
* will flush most meta data but that will generate more meta data
* (typically directory updates). Which then must be flushed and
- * logged before we can write the unmount record.
+ * logged before we can write the unmount record. We also so sync
+ * reclaim of inodes to catch any that the above delwri flush skipped.
*/
do {
+ xfs_reclaim_inodes(mp, SYNC_WAIT);
xfs_sync_attr(mp, SYNC_WAIT);
pincount = xfs_flush_buftarg(mp->m_ddev_targp, 1);
if (!pincount) {
@@ -575,7 +569,7 @@ xfs_flush_inodes(
igrab(inode);
xfs_syncd_queue_work(ip->i_mount, inode, xfs_flush_inodes_work, &completion);
wait_for_completion(&completion);
- xfs_log_force(ip->i_mount, (xfs_lsn_t)0, XFS_LOG_FORCE|XFS_LOG_SYNC);
+ xfs_log_force(ip->i_mount, XFS_LOG_SYNC);
}
/*
@@ -591,8 +585,8 @@ xfs_sync_worker(
int error;
if (!(mp->m_flags & XFS_MOUNT_RDONLY)) {
- xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE);
- xfs_reclaim_inodes(mp, XFS_IFLUSH_DELWRI_ELSE_ASYNC);
+ xfs_log_force(mp, 0);
+ xfs_reclaim_inodes(mp, 0);
/* dgc: errors ignored here */
error = xfs_qm_sync(mp, SYNC_TRYLOCK);
error = xfs_sync_fsdata(mp, SYNC_TRYLOCK);
@@ -690,16 +684,17 @@ void
xfs_inode_set_reclaim_tag(
xfs_inode_t *ip)
{
- xfs_mount_t *mp = ip->i_mount;
- xfs_perag_t *pag = xfs_get_perag(mp, ip->i_ino);
+ struct xfs_mount *mp = ip->i_mount;
+ struct xfs_perag *pag;
+ pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ip->i_ino));
read_lock(&pag->pag_ici_lock);
spin_lock(&ip->i_flags_lock);
__xfs_inode_set_reclaim_tag(pag, ip);
__xfs_iflags_set(ip, XFS_IRECLAIMABLE);
spin_unlock(&ip->i_flags_lock);
read_unlock(&pag->pag_ici_lock);
- xfs_put_perag(mp, pag);
+ xfs_perag_put(pag);
}
void
@@ -712,12 +707,64 @@ __xfs_inode_clear_reclaim_tag(
XFS_INO_TO_AGINO(mp, ip->i_ino), XFS_ICI_RECLAIM_TAG);
}
+/*
+ * Inodes in different states need to be treated differently, and the return
+ * value of xfs_iflush is not sufficient to get this right. The following table
+ * lists the inode states and the reclaim actions necessary for non-blocking
+ * reclaim:
+ *
+ *
+ * inode state iflush ret required action
+ * --------------- ---------- ---------------
+ * bad - reclaim
+ * shutdown EIO unpin and reclaim
+ * clean, unpinned 0 reclaim
+ * stale, unpinned 0 reclaim
+ * clean, pinned(*) 0 requeue
+ * stale, pinned EAGAIN requeue
+ * dirty, delwri ok 0 requeue
+ * dirty, delwri blocked EAGAIN requeue
+ * dirty, sync flush 0 reclaim
+ *
+ * (*) dgc: I don't think the clean, pinned state is possible but it gets
+ * handled anyway given the order of checks implemented.
+ *
+ * As can be seen from the table, the return value of xfs_iflush() is not
+ * sufficient to correctly decide the reclaim action here. The checks in
+ * xfs_iflush() might look like duplicates, but they are not.
+ *
+ * Also, because we get the flush lock first, we know that any inode that has
+ * been flushed delwri has had the flush completed by the time we check that
+ * the inode is clean. The clean inode check needs to be done before flushing
+ * the inode delwri otherwise we would loop forever requeuing clean inodes as
+ * we cannot tell apart a successful delwri flush and a clean inode from the
+ * return value of xfs_iflush().
+ *
+ * Note that because the inode is flushed delayed write by background
+ * writeback, the flush lock may already be held here and waiting on it can
+ * result in very long latencies. Hence for sync reclaims, where we wait on the
+ * flush lock, the caller should push out delayed write inodes first before
+ * trying to reclaim them to minimise the amount of time spent waiting. For
+ * background relaim, we just requeue the inode for the next pass.
+ *
+ * Hence the order of actions after gaining the locks should be:
+ * bad => reclaim
+ * shutdown => unpin and reclaim
+ * pinned, delwri => requeue
+ * pinned, sync => unpin
+ * stale => reclaim
+ * clean => reclaim
+ * dirty, delwri => flush and requeue
+ * dirty, sync => flush, wait and reclaim
+ */
STATIC int
xfs_reclaim_inode(
struct xfs_inode *ip,
struct xfs_perag *pag,
int sync_mode)
{
+ int error = 0;
+
/*
* The radix tree lock here protects a thread in xfs_iget from racing
* with us starting reclaim on the inode. Once we have the
@@ -735,33 +782,70 @@ xfs_reclaim_inode(
spin_unlock(&ip->i_flags_lock);
write_unlock(&pag->pag_ici_lock);
- /*
- * If the inode is still dirty, then flush it out. If the inode
- * is not in the AIL, then it will be OK to flush it delwri as
- * long as xfs_iflush() does not keep any references to the inode.
- * We leave that decision up to xfs_iflush() since it has the
- * knowledge of whether it's OK to simply do a delwri flush of
- * the inode or whether we need to wait until the inode is
- * pulled from the AIL.
- * We get the flush lock regardless, though, just to make sure
- * we don't free it while it is being flushed.
- */
xfs_ilock(ip, XFS_ILOCK_EXCL);
- xfs_iflock(ip);
+ if (!xfs_iflock_nowait(ip)) {
+ if (!(sync_mode & SYNC_WAIT))
+ goto out;
+ xfs_iflock(ip);
+ }
+
+ if (is_bad_inode(VFS_I(ip)))
+ goto reclaim;
+ if (XFS_FORCED_SHUTDOWN(ip->i_mount)) {
+ xfs_iunpin_wait(ip);
+ goto reclaim;
+ }
+ if (xfs_ipincount(ip)) {
+ if (!(sync_mode & SYNC_WAIT)) {
+ xfs_ifunlock(ip);
+ goto out;
+ }
+ xfs_iunpin_wait(ip);
+ }
+ if (xfs_iflags_test(ip, XFS_ISTALE))
+ goto reclaim;
+ if (xfs_inode_clean(ip))
+ goto reclaim;
+
+ /* Now we have an inode that needs flushing */
+ error = xfs_iflush(ip, sync_mode);
+ if (sync_mode & SYNC_WAIT) {
+ xfs_iflock(ip);
+ goto reclaim;
+ }
/*
- * In the case of a forced shutdown we rely on xfs_iflush() to
- * wait for the inode to be unpinned before returning an error.
+ * When we have to flush an inode but don't have SYNC_WAIT set, we
+ * flush the inode out using a delwri buffer and wait for the next
+ * call into reclaim to find it in a clean state instead of waiting for
+ * it now. We also don't return errors here - if the error is transient
+ * then the next reclaim pass will flush the inode, and if the error
+ * is permanent then the next sync reclaim will relcaim the inode and
+ * pass on the error.
*/
- if (!is_bad_inode(VFS_I(ip)) && xfs_iflush(ip, sync_mode) == 0) {
- /* synchronize with xfs_iflush_done */
- xfs_iflock(ip);
- xfs_ifunlock(ip);
+ if (error && !XFS_FORCED_SHUTDOWN(ip->i_mount)) {
+ xfs_fs_cmn_err(CE_WARN, ip->i_mount,
+ "inode 0x%llx background reclaim flush failed with %d",
+ (long long)ip->i_ino, error);
}
+out:
+ xfs_iflags_clear(ip, XFS_IRECLAIM);
+ xfs_iunlock(ip, XFS_ILOCK_EXCL);
+ /*
+ * We could return EAGAIN here to make reclaim rescan the inode tree in
+ * a short while. However, this just burns CPU time scanning the tree
+ * waiting for IO to complete and xfssyncd never goes back to the idle
+ * state. Instead, return 0 to let the next scheduled background reclaim
+ * attempt to reclaim the inode again.
+ */
+ return 0;
+reclaim:
+ xfs_ifunlock(ip);
xfs_iunlock(ip, XFS_ILOCK_EXCL);
xfs_ireclaim(ip);
- return 0;
+ return error;
+
}
int
diff --git a/fs/xfs/linux-2.6/xfs_sync.h b/fs/xfs/linux-2.6/xfs_sync.h
index ea932b43335d..d480c346cabb 100644
--- a/fs/xfs/linux-2.6/xfs_sync.h
+++ b/fs/xfs/linux-2.6/xfs_sync.h
@@ -37,7 +37,6 @@ void xfs_syncd_stop(struct xfs_mount *mp);
int xfs_sync_attr(struct xfs_mount *mp, int flags);
int xfs_sync_data(struct xfs_mount *mp, int flags);
-int xfs_sync_fsdata(struct xfs_mount *mp, int flags);
int xfs_quiesce_data(struct xfs_mount *mp);
void xfs_quiesce_attr(struct xfs_mount *mp);
diff --git a/fs/xfs/linux-2.6/xfs_trace.h b/fs/xfs/linux-2.6/xfs_trace.h
index c22a608321a3..a4574dcf5065 100644
--- a/fs/xfs/linux-2.6/xfs_trace.h
+++ b/fs/xfs/linux-2.6/xfs_trace.h
@@ -78,6 +78,33 @@ DECLARE_EVENT_CLASS(xfs_attr_list_class,
)
)
+#define DEFINE_PERAG_REF_EVENT(name) \
+TRACE_EVENT(name, \
+ TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, int refcount, \
+ unsigned long caller_ip), \
+ TP_ARGS(mp, agno, refcount, caller_ip), \
+ TP_STRUCT__entry( \
+ __field(dev_t, dev) \
+ __field(xfs_agnumber_t, agno) \
+ __field(int, refcount) \
+ __field(unsigned long, caller_ip) \
+ ), \
+ TP_fast_assign( \
+ __entry->dev = mp->m_super->s_dev; \
+ __entry->agno = agno; \
+ __entry->refcount = refcount; \
+ __entry->caller_ip = caller_ip; \
+ ), \
+ TP_printk("dev %d:%d agno %u refcount %d caller %pf", \
+ MAJOR(__entry->dev), MINOR(__entry->dev), \
+ __entry->agno, \
+ __entry->refcount, \
+ (char *)__entry->caller_ip) \
+);
+
+DEFINE_PERAG_REF_EVENT(xfs_perag_get)
+DEFINE_PERAG_REF_EVENT(xfs_perag_put)
+
#define DEFINE_ATTR_LIST_EVENT(name) \
DEFINE_EVENT(xfs_attr_list_class, name, \
TP_PROTO(struct xfs_attr_list_context *ctx), \
@@ -456,6 +483,7 @@ DEFINE_BUF_ITEM_EVENT(xfs_buf_item_unlock);
DEFINE_BUF_ITEM_EVENT(xfs_buf_item_unlock_stale);
DEFINE_BUF_ITEM_EVENT(xfs_buf_item_committed);
DEFINE_BUF_ITEM_EVENT(xfs_buf_item_push);
+DEFINE_BUF_ITEM_EVENT(xfs_buf_item_pushbuf);
DEFINE_BUF_ITEM_EVENT(xfs_trans_get_buf);
DEFINE_BUF_ITEM_EVENT(xfs_trans_get_buf_recur);
DEFINE_BUF_ITEM_EVENT(xfs_trans_getsb);
@@ -1414,6 +1442,59 @@ TRACE_EVENT(xfs_dir2_leafn_moveents,
__entry->count)
);
+#define XFS_SWAPEXT_INODES \
+ { 0, "target" }, \
+ { 1, "temp" }
+
+#define XFS_INODE_FORMAT_STR \
+ { 0, "invalid" }, \
+ { 1, "local" }, \
+ { 2, "extent" }, \
+ { 3, "btree" }
+
+DECLARE_EVENT_CLASS(xfs_swap_extent_class,
+ TP_PROTO(struct xfs_inode *ip, int which),
+ TP_ARGS(ip, which),
+ TP_STRUCT__entry(
+ __field(dev_t, dev)
+ __field(int, which)
+ __field(xfs_ino_t, ino)
+ __field(int, format)
+ __field(int, nex)
+ __field(int, max_nex)
+ __field(int, broot_size)
+ __field(int, fork_off)
+ ),
+ TP_fast_assign(
+ __entry->dev = VFS_I(ip)->i_sb->s_dev;
+ __entry->which = which;
+ __entry->ino = ip->i_ino;
+ __entry->format = ip->i_d.di_format;
+ __entry->nex = ip->i_d.di_nextents;
+ __entry->max_nex = ip->i_df.if_ext_max;
+ __entry->broot_size = ip->i_df.if_broot_bytes;
+ __entry->fork_off = XFS_IFORK_BOFF(ip);
+ ),
+ TP_printk("dev %d:%d ino 0x%llx (%s), %s format, num_extents %d, "
+ "Max in-fork extents %d, broot size %d, fork offset %d",
+ MAJOR(__entry->dev), MINOR(__entry->dev),
+ __entry->ino,
+ __print_symbolic(__entry->which, XFS_SWAPEXT_INODES),
+ __print_symbolic(__entry->format, XFS_INODE_FORMAT_STR),
+ __entry->nex,
+ __entry->max_nex,
+ __entry->broot_size,
+ __entry->fork_off)
+)
+
+#define DEFINE_SWAPEXT_EVENT(name) \
+DEFINE_EVENT(xfs_swap_extent_class, name, \
+ TP_PROTO(struct xfs_inode *ip, int which), \
+ TP_ARGS(ip, which))
+
+DEFINE_SWAPEXT_EVENT(xfs_swap_extent_before);
+DEFINE_SWAPEXT_EVENT(xfs_swap_extent_after);
+
#endif /* _TRACE_XFS_H */
#undef TRACE_INCLUDE_PATH
diff --git a/fs/xfs/linux-2.6/xfs_xattr.c b/fs/xfs/linux-2.6/xfs_xattr.c
index 0b1878857fc3..fa01b9daba6b 100644
--- a/fs/xfs/linux-2.6/xfs_xattr.c
+++ b/fs/xfs/linux-2.6/xfs_xattr.c
@@ -45,7 +45,7 @@ xfs_xattr_get(struct dentry *dentry, const char *name,
value = NULL;
}
- error = -xfs_attr_get(ip, name, value, &asize, xflags);
+ error = -xfs_attr_get(ip, (unsigned char *)name, value, &asize, xflags);
if (error)
return error;
return asize;
@@ -67,8 +67,9 @@ xfs_xattr_set(struct dentry *dentry, const char *name, const void *value,
xflags |= ATTR_REPLACE;
if (!value)
- return -xfs_attr_remove(ip, name, xflags);
- return -xfs_attr_set(ip, name, (void *)value, size, xflags);
+ return -xfs_attr_remove(ip, (unsigned char *)name, xflags);
+ return -xfs_attr_set(ip, (unsigned char *)name,
+ (void *)value, size, xflags);
}
static struct xattr_handler xfs_xattr_user_handler = {
@@ -124,8 +125,13 @@ static const char *xfs_xattr_prefix(int flags)
}
static int
-xfs_xattr_put_listent(struct xfs_attr_list_context *context, int flags,
- char *name, int namelen, int valuelen, char *value)
+xfs_xattr_put_listent(
+ struct xfs_attr_list_context *context,
+ int flags,
+ unsigned char *name,
+ int namelen,
+ int valuelen,
+ unsigned char *value)
{
unsigned int prefix_len = xfs_xattr_prefix_len(flags);
char *offset;
@@ -148,7 +154,7 @@ xfs_xattr_put_listent(struct xfs_attr_list_context *context, int flags,
offset = (char *)context->alist + context->count;
strncpy(offset, xfs_xattr_prefix(flags), prefix_len);
offset += prefix_len;
- strncpy(offset, name, namelen); /* real name */
+ strncpy(offset, (char *)name, namelen); /* real name */
offset += namelen;
*offset = '\0';
context->count += prefix_len + namelen + 1;
@@ -156,8 +162,13 @@ xfs_xattr_put_listent(struct xfs_attr_list_context *context, int flags,
}
static int
-xfs_xattr_put_listent_sizes(struct xfs_attr_list_context *context, int flags,
- char *name, int namelen, int valuelen, char *value)
+xfs_xattr_put_listent_sizes(
+ struct xfs_attr_list_context *context,
+ int flags,
+ unsigned char *name,
+ int namelen,
+ int valuelen,
+ unsigned char *value)
{
context->count += xfs_xattr_prefix_len(flags) + namelen + 1;
return 0;
diff --git a/fs/xfs/quota/xfs_dquot.c b/fs/xfs/quota/xfs_dquot.c
index d7c7eea09fc2..5f79dd78626b 100644
--- a/fs/xfs/quota/xfs_dquot.c
+++ b/fs/xfs/quota/xfs_dquot.c
@@ -1187,7 +1187,7 @@ xfs_qm_dqflush(
* block, nada.
*/
if (!XFS_DQ_IS_DIRTY(dqp) ||
- (!(flags & XFS_QMOPT_SYNC) && atomic_read(&dqp->q_pincount) > 0)) {
+ (!(flags & SYNC_WAIT) && atomic_read(&dqp->q_pincount) > 0)) {
xfs_dqfunlock(dqp);
return 0;
}
@@ -1248,23 +1248,20 @@ xfs_qm_dqflush(
*/
if (XFS_BUF_ISPINNED(bp)) {
trace_xfs_dqflush_force(dqp);
- xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE);
+ xfs_log_force(mp, 0);
}
- if (flags & XFS_QMOPT_DELWRI) {
- xfs_bdwrite(mp, bp);
- } else if (flags & XFS_QMOPT_ASYNC) {
- error = xfs_bawrite(mp, bp);
- } else {
+ if (flags & SYNC_WAIT)
error = xfs_bwrite(mp, bp);
- }
+ else
+ xfs_bdwrite(mp, bp);
trace_xfs_dqflush_done(dqp);
/*
* dqp is still locked, but caller is free to unlock it now.
*/
- return (error);
+ return error;
}
@@ -1445,7 +1442,7 @@ xfs_qm_dqpurge(
* We don't care about getting disk errors here. We need
* to purge this dquot anyway, so we go ahead regardless.
*/
- error = xfs_qm_dqflush(dqp, XFS_QMOPT_SYNC);
+ error = xfs_qm_dqflush(dqp, SYNC_WAIT);
if (error)
xfs_fs_cmn_err(CE_WARN, mp,
"xfs_qm_dqpurge: dquot %p flush failed", dqp);
@@ -1529,25 +1526,17 @@ xfs_qm_dqflock_pushbuf_wait(
* the flush lock when the I/O completes.
*/
bp = xfs_incore(dqp->q_mount->m_ddev_targp, dqp->q_blkno,
- XFS_QI_DQCHUNKLEN(dqp->q_mount),
- XFS_INCORE_TRYLOCK);
- if (bp != NULL) {
- if (XFS_BUF_ISDELAYWRITE(bp)) {
- int error;
- if (XFS_BUF_ISPINNED(bp)) {
- xfs_log_force(dqp->q_mount,
- (xfs_lsn_t)0,
- XFS_LOG_FORCE);
- }
- error = xfs_bawrite(dqp->q_mount, bp);
- if (error)
- xfs_fs_cmn_err(CE_WARN, dqp->q_mount,
- "xfs_qm_dqflock_pushbuf_wait: "
- "pushbuf error %d on dqp %p, bp %p",
- error, dqp, bp);
- } else {
- xfs_buf_relse(bp);
- }
+ XFS_QI_DQCHUNKLEN(dqp->q_mount), XBF_TRYLOCK);
+ if (!bp)
+ goto out_lock;
+
+ if (XFS_BUF_ISDELAYWRITE(bp)) {
+ if (XFS_BUF_ISPINNED(bp))
+ xfs_log_force(dqp->q_mount, 0);
+ xfs_buf_delwri_promote(bp);
+ wake_up_process(bp->b_target->bt_task);
}
+ xfs_buf_relse(bp);
+out_lock:
xfs_dqflock(dqp);
}
diff --git a/fs/xfs/quota/xfs_dquot_item.c b/fs/xfs/quota/xfs_dquot_item.c
index d0d4a9a0bbd7..4e4ee9a57194 100644
--- a/fs/xfs/quota/xfs_dquot_item.c
+++ b/fs/xfs/quota/xfs_dquot_item.c
@@ -74,11 +74,11 @@ xfs_qm_dquot_logitem_format(
logvec->i_addr = (xfs_caddr_t)&logitem->qli_format;
logvec->i_len = sizeof(xfs_dq_logformat_t);
- XLOG_VEC_SET_TYPE(logvec, XLOG_REG_TYPE_QFORMAT);
+ logvec->i_type = XLOG_REG_TYPE_QFORMAT;
logvec++;
logvec->i_addr = (xfs_caddr_t)&logitem->qli_dquot->q_core;
logvec->i_len = sizeof(xfs_disk_dquot_t);
- XLOG_VEC_SET_TYPE(logvec, XLOG_REG_TYPE_DQUOT);
+ logvec->i_type = XLOG_REG_TYPE_DQUOT;
ASSERT(2 == logitem->qli_item.li_desc->lid_size);
logitem->qli_format.qlf_size = 2;
@@ -153,7 +153,7 @@ xfs_qm_dquot_logitem_push(
* lock without sleeping, then there must not have been
* anyone in the process of flushing the dquot.
*/
- error = xfs_qm_dqflush(dqp, XFS_QMOPT_DELWRI);
+ error = xfs_qm_dqflush(dqp, 0);
if (error)
xfs_fs_cmn_err(CE_WARN, dqp->q_mount,
"xfs_qm_dquot_logitem_push: push error %d on dqp %p",
@@ -190,7 +190,7 @@ xfs_qm_dqunpin_wait(
/*
* Give the log a push so we don't wait here too long.
*/
- xfs_log_force(dqp->q_mount, (xfs_lsn_t)0, XFS_LOG_FORCE);
+ xfs_log_force(dqp->q_mount, 0);
wait_event(dqp->q_pinwait, (atomic_read(&dqp->q_pincount) == 0));
}
@@ -212,68 +212,31 @@ xfs_qm_dquot_logitem_pushbuf(
xfs_dquot_t *dqp;
xfs_mount_t *mp;
xfs_buf_t *bp;
- uint dopush;
dqp = qip->qli_dquot;
ASSERT(XFS_DQ_IS_LOCKED(dqp));
/*
- * The qli_pushbuf_flag keeps others from
- * trying to duplicate our effort.
- */
- ASSERT(qip->qli_pushbuf_flag != 0);
- ASSERT(qip->qli_push_owner == current_pid());
-
- /*
* If flushlock isn't locked anymore, chances are that the
* inode flush completed and the inode was taken off the AIL.
* So, just get out.
*/
if (completion_done(&dqp->q_flush) ||
((qip->qli_item.li_flags & XFS_LI_IN_AIL) == 0)) {
- qip->qli_pushbuf_flag = 0;
xfs_dqunlock(dqp);
return;
}
mp = dqp->q_mount;
bp = xfs_incore(mp->m_ddev_targp, qip->qli_format.qlf_blkno,
- XFS_QI_DQCHUNKLEN(mp),
- XFS_INCORE_TRYLOCK);
- if (bp != NULL) {
- if (XFS_BUF_ISDELAYWRITE(bp)) {
- dopush = ((qip->qli_item.li_flags & XFS_LI_IN_AIL) &&
- !completion_done(&dqp->q_flush));
- qip->qli_pushbuf_flag = 0;
- xfs_dqunlock(dqp);
-
- if (XFS_BUF_ISPINNED(bp)) {
- xfs_log_force(mp, (xfs_lsn_t)0,
- XFS_LOG_FORCE);
- }
- if (dopush) {
- int error;
-#ifdef XFSRACEDEBUG
- delay_for_intr();
- delay(300);
-#endif
- error = xfs_bawrite(mp, bp);
- if (error)
- xfs_fs_cmn_err(CE_WARN, mp,
- "xfs_qm_dquot_logitem_pushbuf: pushbuf error %d on qip %p, bp %p",
- error, qip, bp);
- } else {
- xfs_buf_relse(bp);
- }
- } else {
- qip->qli_pushbuf_flag = 0;
- xfs_dqunlock(dqp);
- xfs_buf_relse(bp);
- }
+ XFS_QI_DQCHUNKLEN(mp), XBF_TRYLOCK);
+ xfs_dqunlock(dqp);
+ if (!bp)
return;
- }
+ if (XFS_BUF_ISDELAYWRITE(bp))
+ xfs_buf_delwri_promote(bp);
+ xfs_buf_relse(bp);
+ return;
- qip->qli_pushbuf_flag = 0;
- xfs_dqunlock(dqp);
}
/*
@@ -291,50 +254,24 @@ xfs_qm_dquot_logitem_trylock(
xfs_dq_logitem_t *qip)
{
xfs_dquot_t *dqp;
- uint retval;
dqp = qip->qli_dquot;
if (atomic_read(&dqp->q_pincount) > 0)
- return (XFS_ITEM_PINNED);
+ return XFS_ITEM_PINNED;
if (! xfs_qm_dqlock_nowait(dqp))
- return (XFS_ITEM_LOCKED);
+ return XFS_ITEM_LOCKED;
- retval = XFS_ITEM_SUCCESS;
if (!xfs_dqflock_nowait(dqp)) {
/*
- * The dquot is already being flushed. It may have been
- * flushed delayed write, however, and we don't want to
- * get stuck waiting for that to complete. So, we want to check
- * to see if we can lock the dquot's buffer without sleeping.
- * If we can and it is marked for delayed write, then we
- * hold it and send it out from the push routine. We don't
- * want to do that now since we might sleep in the device
- * strategy routine. We also don't want to grab the buffer lock
- * here because we'd like not to call into the buffer cache
- * while holding the AIL lock.
- * Make sure to only return PUSHBUF if we set pushbuf_flag
- * ourselves. If someone else is doing it then we don't
- * want to go to the push routine and duplicate their efforts.
+ * dquot has already been flushed to the backing buffer,
+ * leave it locked, pushbuf routine will unlock it.
*/
- if (qip->qli_pushbuf_flag == 0) {
- qip->qli_pushbuf_flag = 1;
- ASSERT(qip->qli_format.qlf_blkno == dqp->q_blkno);
-#ifdef DEBUG
- qip->qli_push_owner = current_pid();
-#endif
- /*
- * The dquot is left locked.
- */
- retval = XFS_ITEM_PUSHBUF;
- } else {
- retval = XFS_ITEM_FLUSHING;
- xfs_dqunlock_nonotify(dqp);
- }
+ return XFS_ITEM_PUSHBUF;
}
ASSERT(qip->qli_item.li_flags & XFS_LI_IN_AIL);
- return (retval);
+ return XFS_ITEM_SUCCESS;
}
@@ -467,7 +404,7 @@ xfs_qm_qoff_logitem_format(xfs_qoff_logitem_t *qf,
log_vector->i_addr = (xfs_caddr_t)&(qf->qql_format);
log_vector->i_len = sizeof(xfs_qoff_logitem_t);
- XLOG_VEC_SET_TYPE(log_vector, XLOG_REG_TYPE_QUOTAOFF);
+ log_vector->i_type = XLOG_REG_TYPE_QUOTAOFF;
qf->qql_format.qf_size = 1;
}
diff --git a/fs/xfs/quota/xfs_dquot_item.h b/fs/xfs/quota/xfs_dquot_item.h
index 5a632531f843..5acae2ada70b 100644
--- a/fs/xfs/quota/xfs_dquot_item.h
+++ b/fs/xfs/quota/xfs_dquot_item.h
@@ -27,10 +27,6 @@ typedef struct xfs_dq_logitem {
xfs_log_item_t qli_item; /* common portion */
struct xfs_dquot *qli_dquot; /* dquot ptr */
xfs_lsn_t qli_flush_lsn; /* lsn at last flush */
- unsigned short qli_pushbuf_flag; /* 1 bit used in push_ail */
-#ifdef DEBUG
- uint64_t qli_push_owner;
-#endif
xfs_dq_logformat_t qli_format; /* logged structure */
} xfs_dq_logitem_t;
diff --git a/fs/xfs/quota/xfs_qm.c b/fs/xfs/quota/xfs_qm.c
index 9e627a8b5b0e..417e61e3d9dd 100644
--- a/fs/xfs/quota/xfs_qm.c
+++ b/fs/xfs/quota/xfs_qm.c
@@ -118,9 +118,14 @@ xfs_Gqm_init(void)
*/
udqhash = kmem_zalloc_greedy(&hsize,
XFS_QM_HASHSIZE_LOW * sizeof(xfs_dqhash_t),
- XFS_QM_HASHSIZE_HIGH * sizeof(xfs_dqhash_t),
- KM_SLEEP | KM_MAYFAIL | KM_LARGE);
- gdqhash = kmem_zalloc(hsize, KM_SLEEP | KM_LARGE);
+ XFS_QM_HASHSIZE_HIGH * sizeof(xfs_dqhash_t));
+ if (!udqhash)
+ goto out;
+
+ gdqhash = kmem_zalloc_large(hsize);
+ if (!gdqhash)
+ goto out_free_udqhash;
+
hsize /= sizeof(xfs_dqhash_t);
ndquot = hsize << 8;
@@ -170,6 +175,11 @@ xfs_Gqm_init(void)
mutex_init(&qcheck_lock);
#endif
return xqm;
+
+ out_free_udqhash:
+ kmem_free_large(udqhash);
+ out:
+ return NULL;
}
/*
@@ -189,8 +199,8 @@ xfs_qm_destroy(
xfs_qm_list_destroy(&(xqm->qm_usr_dqhtable[i]));
xfs_qm_list_destroy(&(xqm->qm_grp_dqhtable[i]));
}
- kmem_free(xqm->qm_usr_dqhtable);
- kmem_free(xqm->qm_grp_dqhtable);
+ kmem_free_large(xqm->qm_usr_dqhtable);
+ kmem_free_large(xqm->qm_grp_dqhtable);
xqm->qm_usr_dqhtable = NULL;
xqm->qm_grp_dqhtable = NULL;
xqm->qm_dqhashmask = 0;
@@ -219,8 +229,12 @@ xfs_qm_hold_quotafs_ref(
*/
mutex_lock(&xfs_Gqm_lock);
- if (xfs_Gqm == NULL)
+ if (!xfs_Gqm) {
xfs_Gqm = xfs_Gqm_init();
+ if (!xfs_Gqm)
+ return ENOMEM;
+ }
+
/*
* We can keep a list of all filesystems with quotas mounted for
* debugging and statistical purposes, but ...
@@ -436,7 +450,7 @@ xfs_qm_unmount_quotas(
STATIC int
xfs_qm_dqflush_all(
xfs_mount_t *mp,
- int flags)
+ int sync_mode)
{
int recl;
xfs_dquot_t *dqp;
@@ -472,7 +486,7 @@ again:
* across a disk write.
*/
xfs_qm_mplist_unlock(mp);
- error = xfs_qm_dqflush(dqp, flags);
+ error = xfs_qm_dqflush(dqp, sync_mode);
xfs_dqunlock(dqp);
if (error)
return error;
@@ -912,13 +926,11 @@ xfs_qm_sync(
{
int recl, restarts;
xfs_dquot_t *dqp;
- uint flush_flags;
int error;
if (!XFS_IS_QUOTA_RUNNING(mp) || !XFS_IS_QUOTA_ON(mp))
return 0;
- flush_flags = (flags & SYNC_WAIT) ? XFS_QMOPT_SYNC : XFS_QMOPT_DELWRI;
restarts = 0;
again:
@@ -978,7 +990,7 @@ xfs_qm_sync(
* across a disk write
*/
xfs_qm_mplist_unlock(mp);
- error = xfs_qm_dqflush(dqp, flush_flags);
+ error = xfs_qm_dqflush(dqp, flags);
xfs_dqunlock(dqp);
if (error && XFS_FORCED_SHUTDOWN(mp))
return 0; /* Need to prevent umount failure */
@@ -1782,7 +1794,7 @@ xfs_qm_quotacheck(
* successfully.
*/
if (!error)
- error = xfs_qm_dqflush_all(mp, XFS_QMOPT_DELWRI);
+ error = xfs_qm_dqflush_all(mp, 0);
/*
* We can get this error if we couldn't do a dquot allocation inside
@@ -2004,7 +2016,7 @@ xfs_qm_shake_freelist(
* We flush it delayed write, so don't bother
* releasing the mplock.
*/
- error = xfs_qm_dqflush(dqp, XFS_QMOPT_DELWRI);
+ error = xfs_qm_dqflush(dqp, 0);
if (error) {
xfs_fs_cmn_err(CE_WARN, dqp->q_mount,
"xfs_qm_dqflush_all: dquot %p flush failed", dqp);
@@ -2187,7 +2199,7 @@ xfs_qm_dqreclaim_one(void)
* We flush it delayed write, so don't bother
* releasing the freelist lock.
*/
- error = xfs_qm_dqflush(dqp, XFS_QMOPT_DELWRI);
+ error = xfs_qm_dqflush(dqp, 0);
if (error) {
xfs_fs_cmn_err(CE_WARN, dqp->q_mount,
"xfs_qm_dqreclaim: dquot %p flush failed", dqp);
diff --git a/fs/xfs/quota/xfs_qm_bhv.c b/fs/xfs/quota/xfs_qm_bhv.c
index a5346630dfae..97b410c12794 100644
--- a/fs/xfs/quota/xfs_qm_bhv.c
+++ b/fs/xfs/quota/xfs_qm_bhv.c
@@ -59,7 +59,7 @@ xfs_fill_statvfs_from_dquot(
be64_to_cpu(dp->d_blk_hardlimit);
if (limit && statp->f_blocks > limit) {
statp->f_blocks = limit;
- statp->f_bfree =
+ statp->f_bfree = statp->f_bavail =
(statp->f_blocks > be64_to_cpu(dp->d_bcount)) ?
(statp->f_blocks - be64_to_cpu(dp->d_bcount)) : 0;
}
diff --git a/fs/xfs/quota/xfs_qm_syscalls.c b/fs/xfs/quota/xfs_qm_syscalls.c
index 873e07e29074..5d0ee8d492db 100644
--- a/fs/xfs/quota/xfs_qm_syscalls.c
+++ b/fs/xfs/quota/xfs_qm_syscalls.c
@@ -1192,9 +1192,9 @@ xfs_qm_internalqcheck(
if (! XFS_IS_QUOTA_ON(mp))
return XFS_ERROR(ESRCH);
- xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE | XFS_LOG_SYNC);
+ xfs_log_force(mp, XFS_LOG_SYNC);
XFS_bflush(mp->m_ddev_targp);
- xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE | XFS_LOG_SYNC);
+ xfs_log_force(mp, XFS_LOG_SYNC);
XFS_bflush(mp->m_ddev_targp);
mutex_lock(&qcheck_lock);
diff --git a/fs/xfs/quota/xfs_trans_dquot.c b/fs/xfs/quota/xfs_trans_dquot.c
index 97ac9640be98..c3ab75cb1d9a 100644
--- a/fs/xfs/quota/xfs_trans_dquot.c
+++ b/fs/xfs/quota/xfs_trans_dquot.c
@@ -589,12 +589,18 @@ xfs_trans_unreserve_and_mod_dquots(
}
}
-STATIC int
-xfs_quota_error(uint flags)
+STATIC void
+xfs_quota_warn(
+ struct xfs_mount *mp,
+ struct xfs_dquot *dqp,
+ int type)
{
- if (flags & XFS_QMOPT_ENOSPC)
- return ENOSPC;
- return EDQUOT;
+ /* no warnings for project quotas - we just return ENOSPC later */
+ if (dqp->dq_flags & XFS_DQ_PROJ)
+ return;
+ quota_send_warning((dqp->dq_flags & XFS_DQ_USER) ? USRQUOTA : GRPQUOTA,
+ be32_to_cpu(dqp->q_core.d_id), mp->m_super->s_dev,
+ type);
}
/*
@@ -612,7 +618,6 @@ xfs_trans_dqresv(
long ninos,
uint flags)
{
- int error;
xfs_qcnt_t hardlimit;
xfs_qcnt_t softlimit;
time_t timer;
@@ -649,7 +654,6 @@ xfs_trans_dqresv(
warnlimit = XFS_QI_RTBWARNLIMIT(dqp->q_mount);
resbcountp = &dqp->q_res_rtbcount;
}
- error = 0;
if ((flags & XFS_QMOPT_FORCE_RES) == 0 &&
dqp->q_core.d_id &&
@@ -667,18 +671,20 @@ xfs_trans_dqresv(
* nblks.
*/
if (hardlimit > 0ULL &&
- (hardlimit <= nblks + *resbcountp)) {
- error = xfs_quota_error(flags);
+ hardlimit <= nblks + *resbcountp) {
+ xfs_quota_warn(mp, dqp, QUOTA_NL_BHARDWARN);
goto error_return;
}
-
if (softlimit > 0ULL &&
- (softlimit <= nblks + *resbcountp)) {
+ softlimit <= nblks + *resbcountp) {
if ((timer != 0 && get_seconds() > timer) ||
(warns != 0 && warns >= warnlimit)) {
- error = xfs_quota_error(flags);
+ xfs_quota_warn(mp, dqp,
+ QUOTA_NL_BSOFTLONGWARN);
goto error_return;
}
+
+ xfs_quota_warn(mp, dqp, QUOTA_NL_BSOFTWARN);
}
}
if (ninos > 0) {
@@ -692,15 +698,19 @@ xfs_trans_dqresv(
softlimit = be64_to_cpu(dqp->q_core.d_ino_softlimit);
if (!softlimit)
softlimit = q->qi_isoftlimit;
+
if (hardlimit > 0ULL && count >= hardlimit) {
- error = xfs_quota_error(flags);
+ xfs_quota_warn(mp, dqp, QUOTA_NL_IHARDWARN);
goto error_return;
- } else if (softlimit > 0ULL && count >= softlimit) {
- if ((timer != 0 && get_seconds() > timer) ||
+ }
+ if (softlimit > 0ULL && count >= softlimit) {
+ if ((timer != 0 && get_seconds() > timer) ||
(warns != 0 && warns >= warnlimit)) {
- error = xfs_quota_error(flags);
+ xfs_quota_warn(mp, dqp,
+ QUOTA_NL_ISOFTLONGWARN);
goto error_return;
}
+ xfs_quota_warn(mp, dqp, QUOTA_NL_ISOFTWARN);
}
}
}
@@ -736,9 +746,14 @@ xfs_trans_dqresv(
ASSERT(dqp->q_res_rtbcount >= be64_to_cpu(dqp->q_core.d_rtbcount));
ASSERT(dqp->q_res_icount >= be64_to_cpu(dqp->q_core.d_icount));
+ xfs_dqunlock(dqp);
+ return 0;
+
error_return:
xfs_dqunlock(dqp);
- return error;
+ if (flags & XFS_QMOPT_ENOSPC)
+ return ENOSPC;
+ return EDQUOT;
}
diff --git a/fs/xfs/xfs_acl.h b/fs/xfs/xfs_acl.h
index 00fd357c3e46..d13eeba2c8f8 100644
--- a/fs/xfs/xfs_acl.h
+++ b/fs/xfs/xfs_acl.h
@@ -36,8 +36,8 @@ struct xfs_acl {
};
/* On-disk XFS extended attribute names */
-#define SGI_ACL_FILE "SGI_ACL_FILE"
-#define SGI_ACL_DEFAULT "SGI_ACL_DEFAULT"
+#define SGI_ACL_FILE (unsigned char *)"SGI_ACL_FILE"
+#define SGI_ACL_DEFAULT (unsigned char *)"SGI_ACL_DEFAULT"
#define SGI_ACL_FILE_SIZE (sizeof(SGI_ACL_FILE)-1)
#define SGI_ACL_DEFAULT_SIZE (sizeof(SGI_ACL_DEFAULT)-1)
diff --git a/fs/xfs/xfs_ag.h b/fs/xfs/xfs_ag.h
index 6702bd865811..b1a5a1ff88ea 100644
--- a/fs/xfs/xfs_ag.h
+++ b/fs/xfs/xfs_ag.h
@@ -187,17 +187,13 @@ typedef struct xfs_perag_busy {
/*
* Per-ag incore structure, copies of information in agf and agi,
* to improve the performance of allocation group selection.
- *
- * pick sizes which fit in allocation buckets well
*/
-#if (BITS_PER_LONG == 32)
-#define XFS_PAGB_NUM_SLOTS 84
-#elif (BITS_PER_LONG == 64)
#define XFS_PAGB_NUM_SLOTS 128
-#endif
-typedef struct xfs_perag
-{
+typedef struct xfs_perag {
+ struct xfs_mount *pag_mount; /* owner filesystem */
+ xfs_agnumber_t pag_agno; /* AG this structure belongs to */
+ atomic_t pag_ref; /* perag reference count */
char pagf_init; /* this agf's entry is initialized */
char pagi_init; /* this agi's entry is initialized */
char pagf_metadata; /* the agf is preferred to be metadata */
@@ -210,8 +206,6 @@ typedef struct xfs_perag
__uint32_t pagf_btreeblks; /* # of blocks held in AGF btrees */
xfs_agino_t pagi_freecount; /* number of free inodes */
xfs_agino_t pagi_count; /* number of allocated inodes */
- int pagb_count; /* pagb slots in use */
- xfs_perag_busy_t *pagb_list; /* unstable blocks */
/*
* Inode allocation search lookup optimisation.
@@ -230,6 +224,8 @@ typedef struct xfs_perag
rwlock_t pag_ici_lock; /* incore inode lock */
struct radix_tree_root pag_ici_root; /* incore inode cache root */
#endif
+ int pagb_count; /* pagb slots in use */
+ xfs_perag_busy_t pagb_list[XFS_PAGB_NUM_SLOTS]; /* unstable blocks */
} xfs_perag_t;
/*
diff --git a/fs/xfs/xfs_alloc.c b/fs/xfs/xfs_alloc.c
index 275b1f4f9430..94cddbfb2560 100644
--- a/fs/xfs/xfs_alloc.c
+++ b/fs/xfs/xfs_alloc.c
@@ -1662,11 +1662,13 @@ xfs_free_ag_extent(
xfs_agf_t *agf;
xfs_perag_t *pag; /* per allocation group data */
+ pag = xfs_perag_get(mp, agno);
+ pag->pagf_freeblks += len;
+ xfs_perag_put(pag);
+
agf = XFS_BUF_TO_AGF(agbp);
- pag = &mp->m_perag[agno];
be32_add_cpu(&agf->agf_freeblks, len);
xfs_trans_agblocks_delta(tp, len);
- pag->pagf_freeblks += len;
XFS_WANT_CORRUPTED_GOTO(
be32_to_cpu(agf->agf_freeblks) <=
be32_to_cpu(agf->agf_length),
@@ -1969,10 +1971,12 @@ xfs_alloc_get_freelist(
xfs_trans_brelse(tp, agflbp);
if (be32_to_cpu(agf->agf_flfirst) == XFS_AGFL_SIZE(mp))
agf->agf_flfirst = 0;
- pag = &mp->m_perag[be32_to_cpu(agf->agf_seqno)];
+
+ pag = xfs_perag_get(mp, be32_to_cpu(agf->agf_seqno));
be32_add_cpu(&agf->agf_flcount, -1);
xfs_trans_agflist_delta(tp, -1);
pag->pagf_flcount--;
+ xfs_perag_put(pag);
logflags = XFS_AGF_FLFIRST | XFS_AGF_FLCOUNT;
if (btreeblk) {
@@ -2078,7 +2082,8 @@ xfs_alloc_put_freelist(
be32_add_cpu(&agf->agf_fllast, 1);
if (be32_to_cpu(agf->agf_fllast) == XFS_AGFL_SIZE(mp))
agf->agf_fllast = 0;
- pag = &mp->m_perag[be32_to_cpu(agf->agf_seqno)];
+
+ pag = xfs_perag_get(mp, be32_to_cpu(agf->agf_seqno));
be32_add_cpu(&agf->agf_flcount, 1);
xfs_trans_agflist_delta(tp, 1);
pag->pagf_flcount++;
@@ -2089,6 +2094,7 @@ xfs_alloc_put_freelist(
pag->pagf_btreeblks--;
logflags |= XFS_AGF_BTREEBLKS;
}
+ xfs_perag_put(pag);
xfs_alloc_log_agf(tp, agbp, logflags);
@@ -2152,7 +2158,6 @@ xfs_read_agf(
xfs_trans_brelse(tp, *bpp);
return XFS_ERROR(EFSCORRUPTED);
}
-
XFS_BUF_SET_VTYPE_REF(*bpp, B_FS_AGF, XFS_AGF_REF);
return 0;
}
@@ -2175,7 +2180,7 @@ xfs_alloc_read_agf(
ASSERT(agno != NULLAGNUMBER);
error = xfs_read_agf(mp, tp, agno,
- (flags & XFS_ALLOC_FLAG_TRYLOCK) ? XFS_BUF_TRYLOCK : 0,
+ (flags & XFS_ALLOC_FLAG_TRYLOCK) ? XBF_TRYLOCK : 0,
bpp);
if (error)
return error;
@@ -2184,7 +2189,7 @@ xfs_alloc_read_agf(
ASSERT(!XFS_BUF_GETERROR(*bpp));
agf = XFS_BUF_TO_AGF(*bpp);
- pag = &mp->m_perag[agno];
+ pag = xfs_perag_get(mp, agno);
if (!pag->pagf_init) {
pag->pagf_freeblks = be32_to_cpu(agf->agf_freeblks);
pag->pagf_btreeblks = be32_to_cpu(agf->agf_btreeblks);
@@ -2195,8 +2200,8 @@ xfs_alloc_read_agf(
pag->pagf_levels[XFS_BTNUM_CNTi] =
be32_to_cpu(agf->agf_levels[XFS_BTNUM_CNTi]);
spin_lock_init(&pag->pagb_lock);
- pag->pagb_list = kmem_zalloc(XFS_PAGB_NUM_SLOTS *
- sizeof(xfs_perag_busy_t), KM_SLEEP);
+ pag->pagb_count = 0;
+ memset(pag->pagb_list, 0, sizeof(pag->pagb_list));
pag->pagf_init = 1;
}
#ifdef DEBUG
@@ -2211,6 +2216,7 @@ xfs_alloc_read_agf(
be32_to_cpu(agf->agf_levels[XFS_BTNUM_CNTi]));
}
#endif
+ xfs_perag_put(pag);
return 0;
}
@@ -2270,8 +2276,7 @@ xfs_alloc_vextent(
* These three force us into a single a.g.
*/
args->agno = XFS_FSB_TO_AGNO(mp, args->fsbno);
- down_read(&mp->m_peraglock);
- args->pag = &mp->m_perag[args->agno];
+ args->pag = xfs_perag_get(mp, args->agno);
args->minleft = 0;
error = xfs_alloc_fix_freelist(args, 0);
args->minleft = minleft;
@@ -2280,14 +2285,12 @@ xfs_alloc_vextent(
goto error0;
}
if (!args->agbp) {
- up_read(&mp->m_peraglock);
trace_xfs_alloc_vextent_noagbp(args);
break;
}
args->agbno = XFS_FSB_TO_AGBNO(mp, args->fsbno);
if ((error = xfs_alloc_ag_vextent(args)))
goto error0;
- up_read(&mp->m_peraglock);
break;
case XFS_ALLOCTYPE_START_BNO:
/*
@@ -2339,9 +2342,8 @@ xfs_alloc_vextent(
* Loop over allocation groups twice; first time with
* trylock set, second time without.
*/
- down_read(&mp->m_peraglock);
for (;;) {
- args->pag = &mp->m_perag[args->agno];
+ args->pag = xfs_perag_get(mp, args->agno);
if (no_min) args->minleft = 0;
error = xfs_alloc_fix_freelist(args, flags);
args->minleft = minleft;
@@ -2400,8 +2402,8 @@ xfs_alloc_vextent(
}
}
}
+ xfs_perag_put(args->pag);
}
- up_read(&mp->m_peraglock);
if (bump_rotor || (type == XFS_ALLOCTYPE_ANY_AG)) {
if (args->agno == sagno)
mp->m_agfrotor = (mp->m_agfrotor + 1) %
@@ -2427,9 +2429,10 @@ xfs_alloc_vextent(
args->len);
#endif
}
+ xfs_perag_put(args->pag);
return 0;
error0:
- up_read(&mp->m_peraglock);
+ xfs_perag_put(args->pag);
return error;
}
@@ -2454,8 +2457,7 @@ xfs_free_extent(
args.agno = XFS_FSB_TO_AGNO(args.mp, bno);
ASSERT(args.agno < args.mp->m_sb.sb_agcount);
args.agbno = XFS_FSB_TO_AGBNO(args.mp, bno);
- down_read(&args.mp->m_peraglock);
- args.pag = &args.mp->m_perag[args.agno];
+ args.pag = xfs_perag_get(args.mp, args.agno);
if ((error = xfs_alloc_fix_freelist(&args, XFS_ALLOC_FLAG_FREEING)))
goto error0;
#ifdef DEBUG
@@ -2465,7 +2467,7 @@ xfs_free_extent(
#endif
error = xfs_free_ag_extent(tp, args.agbp, args.agno, args.agbno, len, 0);
error0:
- up_read(&args.mp->m_peraglock);
+ xfs_perag_put(args.pag);
return error;
}
@@ -2486,15 +2488,15 @@ xfs_alloc_mark_busy(xfs_trans_t *tp,
xfs_agblock_t bno,
xfs_extlen_t len)
{
- xfs_mount_t *mp;
xfs_perag_busy_t *bsy;
+ struct xfs_perag *pag;
int n;
- mp = tp->t_mountp;
- spin_lock(&mp->m_perag[agno].pagb_lock);
+ pag = xfs_perag_get(tp->t_mountp, agno);
+ spin_lock(&pag->pagb_lock);
/* search pagb_list for an open slot */
- for (bsy = mp->m_perag[agno].pagb_list, n = 0;
+ for (bsy = pag->pagb_list, n = 0;
n < XFS_PAGB_NUM_SLOTS;
bsy++, n++) {
if (bsy->busy_tp == NULL) {
@@ -2502,11 +2504,11 @@ xfs_alloc_mark_busy(xfs_trans_t *tp,
}
}
- trace_xfs_alloc_busy(mp, agno, bno, len, n);
+ trace_xfs_alloc_busy(tp->t_mountp, agno, bno, len, n);
if (n < XFS_PAGB_NUM_SLOTS) {
- bsy = &mp->m_perag[agno].pagb_list[n];
- mp->m_perag[agno].pagb_count++;
+ bsy = &pag->pagb_list[n];
+ pag->pagb_count++;
bsy->busy_start = bno;
bsy->busy_length = len;
bsy->busy_tp = tp;
@@ -2521,7 +2523,8 @@ xfs_alloc_mark_busy(xfs_trans_t *tp,
xfs_trans_set_sync(tp);
}
- spin_unlock(&mp->m_perag[agno].pagb_lock);
+ spin_unlock(&pag->pagb_lock);
+ xfs_perag_put(pag);
}
void
@@ -2529,24 +2532,23 @@ xfs_alloc_clear_busy(xfs_trans_t *tp,
xfs_agnumber_t agno,
int idx)
{
- xfs_mount_t *mp;
+ struct xfs_perag *pag;
xfs_perag_busy_t *list;
- mp = tp->t_mountp;
-
- spin_lock(&mp->m_perag[agno].pagb_lock);
- list = mp->m_perag[agno].pagb_list;
-
ASSERT(idx < XFS_PAGB_NUM_SLOTS);
+ pag = xfs_perag_get(tp->t_mountp, agno);
+ spin_lock(&pag->pagb_lock);
+ list = pag->pagb_list;
- trace_xfs_alloc_unbusy(mp, agno, idx, list[idx].busy_tp == tp);
+ trace_xfs_alloc_unbusy(tp->t_mountp, agno, idx, list[idx].busy_tp == tp);
if (list[idx].busy_tp == tp) {
list[idx].busy_tp = NULL;
- mp->m_perag[agno].pagb_count--;
+ pag->pagb_count--;
}
- spin_unlock(&mp->m_perag[agno].pagb_lock);
+ spin_unlock(&pag->pagb_lock);
+ xfs_perag_put(pag);
}
@@ -2560,17 +2562,15 @@ xfs_alloc_search_busy(xfs_trans_t *tp,
xfs_agblock_t bno,
xfs_extlen_t len)
{
- xfs_mount_t *mp;
+ struct xfs_perag *pag;
xfs_perag_busy_t *bsy;
xfs_agblock_t uend, bend;
xfs_lsn_t lsn = 0;
int cnt;
- mp = tp->t_mountp;
-
- spin_lock(&mp->m_perag[agno].pagb_lock);
-
- uend = bno + len - 1;
+ pag = xfs_perag_get(tp->t_mountp, agno);
+ spin_lock(&pag->pagb_lock);
+ cnt = pag->pagb_count;
/*
* search pagb_list for this slot, skipping open slots. We have to
@@ -2578,8 +2578,9 @@ xfs_alloc_search_busy(xfs_trans_t *tp,
* we have to get the most recent LSN for the log force to push out
* all the transactions that span the range.
*/
- for (cnt = 0; cnt < mp->m_perag[agno].pagb_count; cnt++) {
- bsy = &mp->m_perag[agno].pagb_list[cnt];
+ uend = bno + len - 1;
+ for (cnt = 0; cnt < pag->pagb_count; cnt++) {
+ bsy = &pag->pagb_list[cnt];
if (!bsy->busy_tp)
continue;
@@ -2591,7 +2592,8 @@ xfs_alloc_search_busy(xfs_trans_t *tp,
if (XFS_LSN_CMP(bsy->busy_tp->t_commit_lsn, lsn) > 0)
lsn = bsy->busy_tp->t_commit_lsn;
}
- spin_unlock(&mp->m_perag[agno].pagb_lock);
+ spin_unlock(&pag->pagb_lock);
+ xfs_perag_put(pag);
trace_xfs_alloc_busysearch(tp->t_mountp, agno, bno, len, lsn);
/*
@@ -2599,5 +2601,5 @@ xfs_alloc_search_busy(xfs_trans_t *tp,
* transaction that freed the block
*/
if (lsn)
- xfs_log_force(mp, lsn, XFS_LOG_FORCE|XFS_LOG_SYNC);
+ xfs_log_force_lsn(tp->t_mountp, lsn, XFS_LOG_SYNC);
}
diff --git a/fs/xfs/xfs_alloc_btree.c b/fs/xfs/xfs_alloc_btree.c
index adbd9141aea1..b726e10d2c1c 100644
--- a/fs/xfs/xfs_alloc_btree.c
+++ b/fs/xfs/xfs_alloc_btree.c
@@ -61,12 +61,14 @@ xfs_allocbt_set_root(
struct xfs_agf *agf = XFS_BUF_TO_AGF(agbp);
xfs_agnumber_t seqno = be32_to_cpu(agf->agf_seqno);
int btnum = cur->bc_btnum;
+ struct xfs_perag *pag = xfs_perag_get(cur->bc_mp, seqno);
ASSERT(ptr->s != 0);
agf->agf_roots[btnum] = ptr->s;
be32_add_cpu(&agf->agf_levels[btnum], inc);
- cur->bc_mp->m_perag[seqno].pagf_levels[btnum] += inc;
+ pag->pagf_levels[btnum] += inc;
+ xfs_perag_put(pag);
xfs_alloc_log_agf(cur->bc_tp, agbp, XFS_AGF_ROOTS | XFS_AGF_LEVELS);
}
@@ -150,6 +152,7 @@ xfs_allocbt_update_lastrec(
{
struct xfs_agf *agf = XFS_BUF_TO_AGF(cur->bc_private.a.agbp);
xfs_agnumber_t seqno = be32_to_cpu(agf->agf_seqno);
+ struct xfs_perag *pag;
__be32 len;
int numrecs;
@@ -193,7 +196,9 @@ xfs_allocbt_update_lastrec(
}
agf->agf_longest = len;
- cur->bc_mp->m_perag[seqno].pagf_longest = be32_to_cpu(len);
+ pag = xfs_perag_get(cur->bc_mp, seqno);
+ pag->pagf_longest = be32_to_cpu(len);
+ xfs_perag_put(pag);
xfs_alloc_log_agf(cur->bc_tp, cur->bc_private.a.agbp, XFS_AGF_LONGEST);
}
diff --git a/fs/xfs/xfs_attr.c b/fs/xfs/xfs_attr.c
index e953b6cfb2a8..b9c196a53c42 100644
--- a/fs/xfs/xfs_attr.c
+++ b/fs/xfs/xfs_attr.c
@@ -93,12 +93,12 @@ STATIC int xfs_attr_rmtval_remove(xfs_da_args_t *args);
STATIC int
xfs_attr_name_to_xname(
struct xfs_name *xname,
- const char *aname)
+ const unsigned char *aname)
{
if (!aname)
return EINVAL;
xname->name = aname;
- xname->len = strlen(aname);
+ xname->len = strlen((char *)aname);
if (xname->len >= MAXNAMELEN)
return EFAULT; /* match IRIX behaviour */
@@ -124,7 +124,7 @@ STATIC int
xfs_attr_get_int(
struct xfs_inode *ip,
struct xfs_name *name,
- char *value,
+ unsigned char *value,
int *valuelenp,
int flags)
{
@@ -171,8 +171,8 @@ xfs_attr_get_int(
int
xfs_attr_get(
xfs_inode_t *ip,
- const char *name,
- char *value,
+ const unsigned char *name,
+ unsigned char *value,
int *valuelenp,
int flags)
{
@@ -197,7 +197,7 @@ xfs_attr_get(
/*
* Calculate how many blocks we need for the new attribute,
*/
-int
+STATIC int
xfs_attr_calc_size(
struct xfs_inode *ip,
int namelen,
@@ -235,8 +235,12 @@ xfs_attr_calc_size(
}
STATIC int
-xfs_attr_set_int(xfs_inode_t *dp, struct xfs_name *name,
- char *value, int valuelen, int flags)
+xfs_attr_set_int(
+ struct xfs_inode *dp,
+ struct xfs_name *name,
+ unsigned char *value,
+ int valuelen,
+ int flags)
{
xfs_da_args_t args;
xfs_fsblock_t firstblock;
@@ -452,8 +456,8 @@ out:
int
xfs_attr_set(
xfs_inode_t *dp,
- const char *name,
- char *value,
+ const unsigned char *name,
+ unsigned char *value,
int valuelen,
int flags)
{
@@ -600,7 +604,7 @@ out:
int
xfs_attr_remove(
xfs_inode_t *dp,
- const char *name,
+ const unsigned char *name,
int flags)
{
int error;
@@ -669,9 +673,13 @@ xfs_attr_list_int(xfs_attr_list_context_t *context)
*/
/*ARGSUSED*/
STATIC int
-xfs_attr_put_listent(xfs_attr_list_context_t *context, int flags,
- char *name, int namelen,
- int valuelen, char *value)
+xfs_attr_put_listent(
+ xfs_attr_list_context_t *context,
+ int flags,
+ unsigned char *name,
+ int namelen,
+ int valuelen,
+ unsigned char *value)
{
struct attrlist *alist = (struct attrlist *)context->alist;
attrlist_ent_t *aep;
@@ -1980,7 +1988,7 @@ xfs_attr_rmtval_get(xfs_da_args_t *args)
xfs_bmbt_irec_t map[ATTR_RMTVALUE_MAPSIZE];
xfs_mount_t *mp;
xfs_daddr_t dblkno;
- xfs_caddr_t dst;
+ void *dst;
xfs_buf_t *bp;
int nmap, error, tmp, valuelen, blkcnt, i;
xfs_dablk_t lblkno;
@@ -2007,15 +2015,14 @@ xfs_attr_rmtval_get(xfs_da_args_t *args)
dblkno = XFS_FSB_TO_DADDR(mp, map[i].br_startblock);
blkcnt = XFS_FSB_TO_BB(mp, map[i].br_blockcount);
error = xfs_read_buf(mp, mp->m_ddev_targp, dblkno,
- blkcnt,
- XFS_BUF_LOCK | XBF_DONT_BLOCK,
+ blkcnt, XBF_LOCK | XBF_DONT_BLOCK,
&bp);
if (error)
return(error);
tmp = (valuelen < XFS_BUF_SIZE(bp))
? valuelen : XFS_BUF_SIZE(bp);
- xfs_biomove(bp, 0, tmp, dst, XFS_B_READ);
+ xfs_biomove(bp, 0, tmp, dst, XBF_READ);
xfs_buf_relse(bp);
dst += tmp;
valuelen -= tmp;
@@ -2039,7 +2046,7 @@ xfs_attr_rmtval_set(xfs_da_args_t *args)
xfs_inode_t *dp;
xfs_bmbt_irec_t map;
xfs_daddr_t dblkno;
- xfs_caddr_t src;
+ void *src;
xfs_buf_t *bp;
xfs_dablk_t lblkno;
int blkcnt, valuelen, nmap, error, tmp, committed;
@@ -2141,13 +2148,13 @@ xfs_attr_rmtval_set(xfs_da_args_t *args)
blkcnt = XFS_FSB_TO_BB(mp, map.br_blockcount);
bp = xfs_buf_get(mp->m_ddev_targp, dblkno, blkcnt,
- XFS_BUF_LOCK | XBF_DONT_BLOCK);
+ XBF_LOCK | XBF_DONT_BLOCK);
ASSERT(bp);
ASSERT(!XFS_BUF_GETERROR(bp));
tmp = (valuelen < XFS_BUF_SIZE(bp)) ? valuelen :
XFS_BUF_SIZE(bp);
- xfs_biomove(bp, 0, tmp, src, XFS_B_WRITE);
+ xfs_biomove(bp, 0, tmp, src, XBF_WRITE);
if (tmp < XFS_BUF_SIZE(bp))
xfs_biozero(bp, tmp, XFS_BUF_SIZE(bp) - tmp);
if ((error = xfs_bwrite(mp, bp))) {/* GROT: NOTE: synchronous write */
@@ -2208,8 +2215,7 @@ xfs_attr_rmtval_remove(xfs_da_args_t *args)
/*
* If the "remote" value is in the cache, remove it.
*/
- bp = xfs_incore(mp->m_ddev_targp, dblkno, blkcnt,
- XFS_INCORE_TRYLOCK);
+ bp = xfs_incore(mp->m_ddev_targp, dblkno, blkcnt, XBF_TRYLOCK);
if (bp) {
XFS_BUF_STALE(bp);
XFS_BUF_UNDELAYWRITE(bp);
diff --git a/fs/xfs/xfs_attr.h b/fs/xfs/xfs_attr.h
index 59b410ce69a1..e920d68ef509 100644
--- a/fs/xfs/xfs_attr.h
+++ b/fs/xfs/xfs_attr.h
@@ -113,7 +113,7 @@ typedef struct attrlist_cursor_kern {
typedef int (*put_listent_func_t)(struct xfs_attr_list_context *, int,
- char *, int, int, char *);
+ unsigned char *, int, int, unsigned char *);
typedef struct xfs_attr_list_context {
struct xfs_inode *dp; /* inode */
@@ -139,7 +139,6 @@ typedef struct xfs_attr_list_context {
/*
* Overall external interface routines.
*/
-int xfs_attr_calc_size(struct xfs_inode *, int, int, int *);
int xfs_attr_inactive(struct xfs_inode *dp);
int xfs_attr_rmtval_get(struct xfs_da_args *args);
int xfs_attr_list_int(struct xfs_attr_list_context *);
diff --git a/fs/xfs/xfs_attr_leaf.c b/fs/xfs/xfs_attr_leaf.c
index baf41b5af756..a90ce74fc256 100644
--- a/fs/xfs/xfs_attr_leaf.c
+++ b/fs/xfs/xfs_attr_leaf.c
@@ -521,11 +521,11 @@ xfs_attr_shortform_to_leaf(xfs_da_args_t *args)
sfe = &sf->list[0];
for (i = 0; i < sf->hdr.count; i++) {
- nargs.name = (char *)sfe->nameval;
+ nargs.name = sfe->nameval;
nargs.namelen = sfe->namelen;
- nargs.value = (char *)&sfe->nameval[nargs.namelen];
+ nargs.value = &sfe->nameval[nargs.namelen];
nargs.valuelen = sfe->valuelen;
- nargs.hashval = xfs_da_hashname((char *)sfe->nameval,
+ nargs.hashval = xfs_da_hashname(sfe->nameval,
sfe->namelen);
nargs.flags = XFS_ATTR_NSP_ONDISK_TO_ARGS(sfe->flags);
error = xfs_attr_leaf_lookup_int(bp, &nargs); /* set a->index */
@@ -612,10 +612,10 @@ xfs_attr_shortform_list(xfs_attr_list_context_t *context)
for (i = 0, sfe = &sf->list[0]; i < sf->hdr.count; i++) {
error = context->put_listent(context,
sfe->flags,
- (char *)sfe->nameval,
+ sfe->nameval,
(int)sfe->namelen,
(int)sfe->valuelen,
- (char*)&sfe->nameval[sfe->namelen]);
+ &sfe->nameval[sfe->namelen]);
/*
* Either search callback finished early or
@@ -659,8 +659,8 @@ xfs_attr_shortform_list(xfs_attr_list_context_t *context)
}
sbp->entno = i;
- sbp->hash = xfs_da_hashname((char *)sfe->nameval, sfe->namelen);
- sbp->name = (char *)sfe->nameval;
+ sbp->hash = xfs_da_hashname(sfe->nameval, sfe->namelen);
+ sbp->name = sfe->nameval;
sbp->namelen = sfe->namelen;
/* These are bytes, and both on-disk, don't endian-flip */
sbp->valuelen = sfe->valuelen;
@@ -818,9 +818,9 @@ xfs_attr_leaf_to_shortform(xfs_dabuf_t *bp, xfs_da_args_t *args, int forkoff)
continue;
ASSERT(entry->flags & XFS_ATTR_LOCAL);
name_loc = xfs_attr_leaf_name_local(leaf, i);
- nargs.name = (char *)name_loc->nameval;
+ nargs.name = name_loc->nameval;
nargs.namelen = name_loc->namelen;
- nargs.value = (char *)&name_loc->nameval[nargs.namelen];
+ nargs.value = &name_loc->nameval[nargs.namelen];
nargs.valuelen = be16_to_cpu(name_loc->valuelen);
nargs.hashval = be32_to_cpu(entry->hashval);
nargs.flags = XFS_ATTR_NSP_ONDISK_TO_ARGS(entry->flags);
@@ -2370,10 +2370,10 @@ xfs_attr_leaf_list_int(xfs_dabuf_t *bp, xfs_attr_list_context_t *context)
retval = context->put_listent(context,
entry->flags,
- (char *)name_loc->nameval,
+ name_loc->nameval,
(int)name_loc->namelen,
be16_to_cpu(name_loc->valuelen),
- (char *)&name_loc->nameval[name_loc->namelen]);
+ &name_loc->nameval[name_loc->namelen]);
if (retval)
return retval;
} else {
@@ -2397,15 +2397,15 @@ xfs_attr_leaf_list_int(xfs_dabuf_t *bp, xfs_attr_list_context_t *context)
return retval;
retval = context->put_listent(context,
entry->flags,
- (char *)name_rmt->name,
+ name_rmt->name,
(int)name_rmt->namelen,
valuelen,
- (char*)args.value);
+ args.value);
kmem_free(args.value);
} else {
retval = context->put_listent(context,
entry->flags,
- (char *)name_rmt->name,
+ name_rmt->name,
(int)name_rmt->namelen,
valuelen,
NULL);
@@ -2950,7 +2950,7 @@ xfs_attr_leaf_freextent(xfs_trans_t **trans, xfs_inode_t *dp,
map.br_blockcount);
bp = xfs_trans_get_buf(*trans,
dp->i_mount->m_ddev_targp,
- dblkno, dblkcnt, XFS_BUF_LOCK);
+ dblkno, dblkcnt, XBF_LOCK);
xfs_trans_binval(*trans, bp);
/*
* Roll to next transaction.
diff --git a/fs/xfs/xfs_attr_sf.h b/fs/xfs/xfs_attr_sf.h
index 76ab7b0cbb3a..919756e3ba53 100644
--- a/fs/xfs/xfs_attr_sf.h
+++ b/fs/xfs/xfs_attr_sf.h
@@ -52,7 +52,7 @@ typedef struct xfs_attr_sf_sort {
__uint8_t valuelen; /* length of value */
__uint8_t flags; /* flags bits (see xfs_attr_leaf.h) */
xfs_dahash_t hash; /* this entry's hash value */
- char *name; /* name value, pointer into buffer */
+ unsigned char *name; /* name value, pointer into buffer */
} xfs_attr_sf_sort_t;
#define XFS_ATTR_SF_ENTSIZE_BYNAME(nlen,vlen) /* space name/value uses */ \
diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
index 98251cdc52aa..1869fb973819 100644
--- a/fs/xfs/xfs_bmap.c
+++ b/fs/xfs/xfs_bmap.c
@@ -2629,13 +2629,12 @@ xfs_bmap_btalloc(
if (startag == NULLAGNUMBER)
startag = ag = 0;
notinit = 0;
- down_read(&mp->m_peraglock);
+ pag = xfs_perag_get(mp, ag);
while (blen < ap->alen) {
- pag = &mp->m_perag[ag];
if (!pag->pagf_init &&
(error = xfs_alloc_pagf_init(mp, args.tp,
ag, XFS_ALLOC_FLAG_TRYLOCK))) {
- up_read(&mp->m_peraglock);
+ xfs_perag_put(pag);
return error;
}
/*
@@ -2667,13 +2666,13 @@ xfs_bmap_btalloc(
break;
error = xfs_filestream_new_ag(ap, &ag);
- if (error) {
- up_read(&mp->m_peraglock);
+ xfs_perag_put(pag);
+ if (error)
return error;
- }
/* loop again to set 'blen'*/
startag = NULLAGNUMBER;
+ pag = xfs_perag_get(mp, ag);
continue;
}
}
@@ -2681,8 +2680,10 @@ xfs_bmap_btalloc(
ag = 0;
if (ag == startag)
break;
+ xfs_perag_put(pag);
+ pag = xfs_perag_get(mp, ag);
}
- up_read(&mp->m_peraglock);
+ xfs_perag_put(pag);
/*
* Since the above loop did a BUF_TRYLOCK, it is
* possible that there is space for this request.
@@ -4470,7 +4471,7 @@ xfs_bmapi(
xfs_fsblock_t abno; /* allocated block number */
xfs_extlen_t alen; /* allocated extent length */
xfs_fileoff_t aoff; /* allocated file offset */
- xfs_bmalloca_t bma; /* args for xfs_bmap_alloc */
+ xfs_bmalloca_t bma = { 0 }; /* args for xfs_bmap_alloc */
xfs_btree_cur_t *cur; /* bmap btree cursor */
xfs_fileoff_t end; /* end of mapped file region */
int eof; /* we've hit the end of extents */
diff --git a/fs/xfs/xfs_bmap_btree.c b/fs/xfs/xfs_bmap_btree.c
index 38751d5fac6f..416e47e54b83 100644
--- a/fs/xfs/xfs_bmap_btree.c
+++ b/fs/xfs/xfs_bmap_btree.c
@@ -334,7 +334,7 @@ xfs_bmbt_disk_set_allf(
/*
* Set all the fields in a bmap extent record from the uncompressed form.
*/
-void
+STATIC void
xfs_bmbt_disk_set_all(
xfs_bmbt_rec_t *r,
xfs_bmbt_irec_t *s)
diff --git a/fs/xfs/xfs_bmap_btree.h b/fs/xfs/xfs_bmap_btree.h
index cf07ca7c22e7..0e66c4ea0f85 100644
--- a/fs/xfs/xfs_bmap_btree.h
+++ b/fs/xfs/xfs_bmap_btree.h
@@ -223,7 +223,6 @@ extern void xfs_bmbt_set_startblock(xfs_bmbt_rec_host_t *r, xfs_fsblock_t v);
extern void xfs_bmbt_set_startoff(xfs_bmbt_rec_host_t *r, xfs_fileoff_t v);
extern void xfs_bmbt_set_state(xfs_bmbt_rec_host_t *r, xfs_exntst_t v);
-extern void xfs_bmbt_disk_set_all(xfs_bmbt_rec_t *r, xfs_bmbt_irec_t *s);
extern void xfs_bmbt_disk_set_allf(xfs_bmbt_rec_t *r, xfs_fileoff_t o,
xfs_fsblock_t b, xfs_filblks_t c, xfs_exntst_t v);
diff --git a/fs/xfs/xfs_btree.c b/fs/xfs/xfs_btree.c
index 36a0992dd669..96be4b0f2496 100644
--- a/fs/xfs/xfs_btree.c
+++ b/fs/xfs/xfs_btree.c
@@ -977,7 +977,7 @@ xfs_btree_get_buf_block(
xfs_daddr_t d;
/* need to sort out how callers deal with failures first */
- ASSERT(!(flags & XFS_BUF_TRYLOCK));
+ ASSERT(!(flags & XBF_TRYLOCK));
d = xfs_btree_ptr_to_daddr(cur, ptr);
*bpp = xfs_trans_get_buf(cur->bc_tp, mp->m_ddev_targp, d,
@@ -1008,7 +1008,7 @@ xfs_btree_read_buf_block(
int error;
/* need to sort out how callers deal with failures first */
- ASSERT(!(flags & XFS_BUF_TRYLOCK));
+ ASSERT(!(flags & XBF_TRYLOCK));
d = xfs_btree_ptr_to_daddr(cur, ptr);
error = xfs_trans_read_buf(mp, cur->bc_tp, mp->m_ddev_targp, d,
diff --git a/fs/xfs/xfs_buf_item.c b/fs/xfs/xfs_buf_item.c
index a30f7e9eb2b9..f3c49e69eab9 100644
--- a/fs/xfs/xfs_buf_item.c
+++ b/fs/xfs/xfs_buf_item.c
@@ -250,7 +250,7 @@ xfs_buf_item_format(
((bip->bli_format.blf_map_size - 1) * sizeof(uint)));
vecp->i_addr = (xfs_caddr_t)&bip->bli_format;
vecp->i_len = base_size;
- XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_BFORMAT);
+ vecp->i_type = XLOG_REG_TYPE_BFORMAT;
vecp++;
nvecs = 1;
@@ -297,14 +297,14 @@ xfs_buf_item_format(
buffer_offset = first_bit * XFS_BLI_CHUNK;
vecp->i_addr = xfs_buf_offset(bp, buffer_offset);
vecp->i_len = nbits * XFS_BLI_CHUNK;
- XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_BCHUNK);
+ vecp->i_type = XLOG_REG_TYPE_BCHUNK;
nvecs++;
break;
} else if (next_bit != last_bit + 1) {
buffer_offset = first_bit * XFS_BLI_CHUNK;
vecp->i_addr = xfs_buf_offset(bp, buffer_offset);
vecp->i_len = nbits * XFS_BLI_CHUNK;
- XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_BCHUNK);
+ vecp->i_type = XLOG_REG_TYPE_BCHUNK;
nvecs++;
vecp++;
first_bit = next_bit;
@@ -316,7 +316,7 @@ xfs_buf_item_format(
buffer_offset = first_bit * XFS_BLI_CHUNK;
vecp->i_addr = xfs_buf_offset(bp, buffer_offset);
vecp->i_len = nbits * XFS_BLI_CHUNK;
- XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_BCHUNK);
+ vecp->i_type = XLOG_REG_TYPE_BCHUNK;
/* You would think we need to bump the nvecs here too, but we do not
* this number is used by recovery, and it gets confused by the boundary
* split here
@@ -467,8 +467,10 @@ xfs_buf_item_unpin_remove(
/*
* This is called to attempt to lock the buffer associated with this
* buf log item. Don't sleep on the buffer lock. If we can't get
- * the lock right away, return 0. If we can get the lock, pull the
- * buffer from the free list, mark it busy, and return 1.
+ * the lock right away, return 0. If we can get the lock, take a
+ * reference to the buffer. If this is a delayed write buffer that
+ * needs AIL help to be written back, invoke the pushbuf routine
+ * rather than the normal success path.
*/
STATIC uint
xfs_buf_item_trylock(
@@ -477,24 +479,18 @@ xfs_buf_item_trylock(
xfs_buf_t *bp;
bp = bip->bli_buf;
-
- if (XFS_BUF_ISPINNED(bp)) {
+ if (XFS_BUF_ISPINNED(bp))
return XFS_ITEM_PINNED;
- }
-
- if (!XFS_BUF_CPSEMA(bp)) {
+ if (!XFS_BUF_CPSEMA(bp))
return XFS_ITEM_LOCKED;
- }
- /*
- * Remove the buffer from the free list. Only do this
- * if it's on the free list. Private buffers like the
- * superblock buffer are not.
- */
+ /* take a reference to the buffer. */
XFS_BUF_HOLD(bp);
ASSERT(!(bip->bli_flags & XFS_BLI_STALE));
trace_xfs_buf_item_trylock(bip);
+ if (XFS_BUF_ISDELAYWRITE(bp))
+ return XFS_ITEM_PUSHBUF;
return XFS_ITEM_SUCCESS;
}
@@ -626,11 +622,9 @@ xfs_buf_item_committed(
}
/*
- * This is called to asynchronously write the buffer associated with this
- * buf log item out to disk. The buffer will already have been locked by
- * a successful call to xfs_buf_item_trylock(). If the buffer still has
- * B_DELWRI set, then get it going out to disk with a call to bawrite().
- * If not, then just release the buffer.
+ * The buffer is locked, but is not a delayed write buffer. This happens
+ * if we race with IO completion and hence we don't want to try to write it
+ * again. Just release the buffer.
*/
STATIC void
xfs_buf_item_push(
@@ -642,17 +636,29 @@ xfs_buf_item_push(
trace_xfs_buf_item_push(bip);
bp = bip->bli_buf;
+ ASSERT(!XFS_BUF_ISDELAYWRITE(bp));
+ xfs_buf_relse(bp);
+}
- if (XFS_BUF_ISDELAYWRITE(bp)) {
- int error;
- error = xfs_bawrite(bip->bli_item.li_mountp, bp);
- if (error)
- xfs_fs_cmn_err(CE_WARN, bip->bli_item.li_mountp,
- "xfs_buf_item_push: pushbuf error %d on bip %p, bp %p",
- error, bip, bp);
- } else {
- xfs_buf_relse(bp);
- }
+/*
+ * The buffer is locked and is a delayed write buffer. Promote the buffer
+ * in the delayed write queue as the caller knows that they must invoke
+ * the xfsbufd to get this buffer written. We have to unlock the buffer
+ * to allow the xfsbufd to write it, too.
+ */
+STATIC void
+xfs_buf_item_pushbuf(
+ xfs_buf_log_item_t *bip)
+{
+ xfs_buf_t *bp;
+
+ ASSERT(!(bip->bli_flags & XFS_BLI_STALE));
+ trace_xfs_buf_item_pushbuf(bip);
+
+ bp = bip->bli_buf;
+ ASSERT(XFS_BUF_ISDELAYWRITE(bp));
+ xfs_buf_delwri_promote(bp);
+ xfs_buf_relse(bp);
}
/* ARGSUSED */
@@ -677,7 +683,7 @@ static struct xfs_item_ops xfs_buf_item_ops = {
.iop_committed = (xfs_lsn_t(*)(xfs_log_item_t*, xfs_lsn_t))
xfs_buf_item_committed,
.iop_push = (void(*)(xfs_log_item_t*))xfs_buf_item_push,
- .iop_pushbuf = NULL,
+ .iop_pushbuf = (void(*)(xfs_log_item_t*))xfs_buf_item_pushbuf,
.iop_committing = (void(*)(xfs_log_item_t*, xfs_lsn_t))
xfs_buf_item_committing
};
diff --git a/fs/xfs/xfs_da_btree.c b/fs/xfs/xfs_da_btree.c
index c0c8869115b1..0ca556b4bf31 100644
--- a/fs/xfs/xfs_da_btree.c
+++ b/fs/xfs/xfs_da_btree.c
@@ -1534,8 +1534,8 @@ xfs_da_hashname(const __uint8_t *name, int namelen)
enum xfs_dacmp
xfs_da_compname(
struct xfs_da_args *args,
- const char *name,
- int len)
+ const unsigned char *name,
+ int len)
{
return (args->namelen == len && memcmp(args->name, name, len) == 0) ?
XFS_CMP_EXACT : XFS_CMP_DIFFERENT;
diff --git a/fs/xfs/xfs_da_btree.h b/fs/xfs/xfs_da_btree.h
index 30cd08f56a3a..fe9f5a8c1d2a 100644
--- a/fs/xfs/xfs_da_btree.h
+++ b/fs/xfs/xfs_da_btree.h
@@ -209,7 +209,8 @@ typedef struct xfs_da_state {
*/
struct xfs_nameops {
xfs_dahash_t (*hashname)(struct xfs_name *);
- enum xfs_dacmp (*compname)(struct xfs_da_args *, const char *, int);
+ enum xfs_dacmp (*compname)(struct xfs_da_args *,
+ const unsigned char *, int);
};
@@ -260,7 +261,7 @@ int xfs_da_shrink_inode(xfs_da_args_t *args, xfs_dablk_t dead_blkno,
uint xfs_da_hashname(const __uint8_t *name_string, int name_length);
enum xfs_dacmp xfs_da_compname(struct xfs_da_args *args,
- const char *name, int len);
+ const unsigned char *name, int len);
xfs_da_state_t *xfs_da_state_alloc(void);
diff --git a/fs/xfs/xfs_dfrag.c b/fs/xfs/xfs_dfrag.c
index 84ca1cf16a1e..cd27c9d6c71f 100644
--- a/fs/xfs/xfs_dfrag.c
+++ b/fs/xfs/xfs_dfrag.c
@@ -45,15 +45,21 @@
#include "xfs_vnodeops.h"
#include "xfs_trace.h"
+
+static int xfs_swap_extents(
+ xfs_inode_t *ip, /* target inode */
+ xfs_inode_t *tip, /* tmp inode */
+ xfs_swapext_t *sxp);
+
/*
- * Syssgi interface for swapext
+ * ioctl interface for swapext
*/
int
xfs_swapext(
xfs_swapext_t *sxp)
{
xfs_inode_t *ip, *tip;
- struct file *file, *target_file;
+ struct file *file, *tmp_file;
int error = 0;
/* Pull information for the target fd */
@@ -68,46 +74,46 @@ xfs_swapext(
goto out_put_file;
}
- target_file = fget((int)sxp->sx_fdtmp);
- if (!target_file) {
+ tmp_file = fget((int)sxp->sx_fdtmp);
+ if (!tmp_file) {
error = XFS_ERROR(EINVAL);
goto out_put_file;
}
- if (!(target_file->f_mode & FMODE_WRITE) ||
- (target_file->f_flags & O_APPEND)) {
+ if (!(tmp_file->f_mode & FMODE_WRITE) ||
+ (tmp_file->f_flags & O_APPEND)) {
error = XFS_ERROR(EBADF);
- goto out_put_target_file;
+ goto out_put_tmp_file;
}
if (IS_SWAPFILE(file->f_path.dentry->d_inode) ||
- IS_SWAPFILE(target_file->f_path.dentry->d_inode)) {
+ IS_SWAPFILE(tmp_file->f_path.dentry->d_inode)) {
error = XFS_ERROR(EINVAL);
- goto out_put_target_file;
+ goto out_put_tmp_file;
}
ip = XFS_I(file->f_path.dentry->d_inode);
- tip = XFS_I(target_file->f_path.dentry->d_inode);
+ tip = XFS_I(tmp_file->f_path.dentry->d_inode);
if (ip->i_mount != tip->i_mount) {
error = XFS_ERROR(EINVAL);
- goto out_put_target_file;
+ goto out_put_tmp_file;
}
if (ip->i_ino == tip->i_ino) {
error = XFS_ERROR(EINVAL);
- goto out_put_target_file;
+ goto out_put_tmp_file;
}
if (XFS_FORCED_SHUTDOWN(ip->i_mount)) {
error = XFS_ERROR(EIO);
- goto out_put_target_file;
+ goto out_put_tmp_file;
}
error = xfs_swap_extents(ip, tip, sxp);
- out_put_target_file:
- fput(target_file);
+ out_put_tmp_file:
+ fput(tmp_file);
out_put_file:
fput(file);
out:
@@ -186,7 +192,7 @@ xfs_swap_extents_check_format(
return 0;
}
-int
+static int
xfs_swap_extents(
xfs_inode_t *ip, /* target inode */
xfs_inode_t *tip, /* tmp inode */
@@ -254,6 +260,9 @@ xfs_swap_extents(
goto out_unlock;
}
+ trace_xfs_swap_extent_before(ip, 0);
+ trace_xfs_swap_extent_before(tip, 1);
+
/* check inode formats now that data is flushed */
error = xfs_swap_extents_check_format(ip, tip);
if (error) {
@@ -421,6 +430,8 @@ xfs_swap_extents(
error = xfs_trans_commit(tp, XFS_TRANS_SWAPEXT);
+ trace_xfs_swap_extent_after(ip, 0);
+ trace_xfs_swap_extent_after(tip, 1);
out:
kmem_free(tempifp);
return error;
diff --git a/fs/xfs/xfs_dfrag.h b/fs/xfs/xfs_dfrag.h
index 4f55a6306558..20bdd935c121 100644
--- a/fs/xfs/xfs_dfrag.h
+++ b/fs/xfs/xfs_dfrag.h
@@ -48,9 +48,6 @@ typedef struct xfs_swapext
*/
int xfs_swapext(struct xfs_swapext *sx);
-int xfs_swap_extents(struct xfs_inode *ip, struct xfs_inode *tip,
- struct xfs_swapext *sxp);
-
#endif /* __KERNEL__ */
#endif /* __XFS_DFRAG_H__ */
diff --git a/fs/xfs/xfs_dir2.c b/fs/xfs/xfs_dir2.c
index 93634a7e90e9..42520f041265 100644
--- a/fs/xfs/xfs_dir2.c
+++ b/fs/xfs/xfs_dir2.c
@@ -44,7 +44,7 @@
#include "xfs_vnodeops.h"
#include "xfs_trace.h"
-struct xfs_name xfs_name_dotdot = {"..", 2};
+struct xfs_name xfs_name_dotdot = { (unsigned char *)"..", 2};
/*
* ASCII case-insensitive (ie. A-Z) support for directories that was
@@ -66,8 +66,8 @@ xfs_ascii_ci_hashname(
STATIC enum xfs_dacmp
xfs_ascii_ci_compname(
struct xfs_da_args *args,
- const char *name,
- int len)
+ const unsigned char *name,
+ int len)
{
enum xfs_dacmp result;
int i;
@@ -247,7 +247,7 @@ xfs_dir_createname(
int
xfs_dir_cilookup_result(
struct xfs_da_args *args,
- const char *name,
+ const unsigned char *name,
int len)
{
if (args->cmpresult == XFS_CMP_DIFFERENT)
diff --git a/fs/xfs/xfs_dir2.h b/fs/xfs/xfs_dir2.h
index 1d9ef96f33aa..74a3b1057685 100644
--- a/fs/xfs/xfs_dir2.h
+++ b/fs/xfs/xfs_dir2.h
@@ -100,7 +100,7 @@ extern int xfs_dir2_isleaf(struct xfs_trans *tp, struct xfs_inode *dp,
extern int xfs_dir2_shrink_inode(struct xfs_da_args *args, xfs_dir2_db_t db,
struct xfs_dabuf *bp);
-extern int xfs_dir_cilookup_result(struct xfs_da_args *args, const char *name,
- int len);
+extern int xfs_dir_cilookup_result(struct xfs_da_args *args,
+ const unsigned char *name, int len);
#endif /* __XFS_DIR2_H__ */
diff --git a/fs/xfs/xfs_dir2_block.c b/fs/xfs/xfs_dir2_block.c
index ddc4ecc7807f..779a267b0a84 100644
--- a/fs/xfs/xfs_dir2_block.c
+++ b/fs/xfs/xfs_dir2_block.c
@@ -57,8 +57,8 @@ static xfs_dahash_t xfs_dir_hash_dot, xfs_dir_hash_dotdot;
void
xfs_dir_startup(void)
{
- xfs_dir_hash_dot = xfs_da_hashname(".", 1);
- xfs_dir_hash_dotdot = xfs_da_hashname("..", 2);
+ xfs_dir_hash_dot = xfs_da_hashname((unsigned char *)".", 1);
+ xfs_dir_hash_dotdot = xfs_da_hashname((unsigned char *)"..", 2);
}
/*
@@ -513,8 +513,9 @@ xfs_dir2_block_getdents(
/*
* If it didn't fit, set the final offset to here & return.
*/
- if (filldir(dirent, dep->name, dep->namelen, cook & 0x7fffffff,
- be64_to_cpu(dep->inumber), DT_UNKNOWN)) {
+ if (filldir(dirent, (char *)dep->name, dep->namelen,
+ cook & 0x7fffffff, be64_to_cpu(dep->inumber),
+ DT_UNKNOWN)) {
*offset = cook & 0x7fffffff;
xfs_da_brelse(NULL, bp);
return 0;
diff --git a/fs/xfs/xfs_dir2_leaf.c b/fs/xfs/xfs_dir2_leaf.c
index 29f484c11b3a..e2d89854ec9e 100644
--- a/fs/xfs/xfs_dir2_leaf.c
+++ b/fs/xfs/xfs_dir2_leaf.c
@@ -1081,7 +1081,7 @@ xfs_dir2_leaf_getdents(
dep = (xfs_dir2_data_entry_t *)ptr;
length = xfs_dir2_data_entsize(dep->namelen);
- if (filldir(dirent, dep->name, dep->namelen,
+ if (filldir(dirent, (char *)dep->name, dep->namelen,
xfs_dir2_byte_to_dataptr(mp, curoff) & 0x7fffffff,
be64_to_cpu(dep->inumber), DT_UNKNOWN))
break;
diff --git a/fs/xfs/xfs_dir2_node.c b/fs/xfs/xfs_dir2_node.c
index ce6e355199b5..78fc4d9ae756 100644
--- a/fs/xfs/xfs_dir2_node.c
+++ b/fs/xfs/xfs_dir2_node.c
@@ -65,7 +65,7 @@ static int xfs_dir2_node_addname_int(xfs_da_args_t *args,
/*
* Log entries from a freespace block.
*/
-void
+STATIC void
xfs_dir2_free_log_bests(
xfs_trans_t *tp, /* transaction pointer */
xfs_dabuf_t *bp, /* freespace buffer */
diff --git a/fs/xfs/xfs_dir2_node.h b/fs/xfs/xfs_dir2_node.h
index dde72db3d695..82dfe7147195 100644
--- a/fs/xfs/xfs_dir2_node.h
+++ b/fs/xfs/xfs_dir2_node.h
@@ -75,8 +75,6 @@ xfs_dir2_db_to_fdindex(struct xfs_mount *mp, xfs_dir2_db_t db)
return ((db) % XFS_DIR2_MAX_FREE_BESTS(mp));
}
-extern void xfs_dir2_free_log_bests(struct xfs_trans *tp, struct xfs_dabuf *bp,
- int first, int last);
extern int xfs_dir2_leaf_to_node(struct xfs_da_args *args,
struct xfs_dabuf *lbp);
extern xfs_dahash_t xfs_dir2_leafn_lasthash(struct xfs_dabuf *bp, int *count);
diff --git a/fs/xfs/xfs_dir2_sf.c b/fs/xfs/xfs_dir2_sf.c
index 9d4f17a69676..c1a5945d463a 100644
--- a/fs/xfs/xfs_dir2_sf.c
+++ b/fs/xfs/xfs_dir2_sf.c
@@ -782,7 +782,7 @@ xfs_dir2_sf_getdents(
}
ino = xfs_dir2_sf_get_inumber(sfp, xfs_dir2_sf_inumberp(sfep));
- if (filldir(dirent, sfep->name, sfep->namelen,
+ if (filldir(dirent, (char *)sfep->name, sfep->namelen,
off & 0x7fffffff, ino, DT_UNKNOWN)) {
*offset = off & 0x7fffffff;
return 0;
diff --git a/fs/xfs/xfs_extfree_item.c b/fs/xfs/xfs_extfree_item.c
index 05a4bdd4be39..6f35ed1b39b9 100644
--- a/fs/xfs/xfs_extfree_item.c
+++ b/fs/xfs/xfs_extfree_item.c
@@ -82,7 +82,7 @@ xfs_efi_item_format(xfs_efi_log_item_t *efip,
log_vector->i_addr = (xfs_caddr_t)&(efip->efi_format);
log_vector->i_len = size;
- XLOG_VEC_SET_TYPE(log_vector, XLOG_REG_TYPE_EFI_FORMAT);
+ log_vector->i_type = XLOG_REG_TYPE_EFI_FORMAT;
ASSERT(size >= sizeof(xfs_efi_log_format_t));
}
@@ -406,7 +406,7 @@ xfs_efd_item_format(xfs_efd_log_item_t *efdp,
log_vector->i_addr = (xfs_caddr_t)&(efdp->efd_format);
log_vector->i_len = size;
- XLOG_VEC_SET_TYPE(log_vector, XLOG_REG_TYPE_EFD_FORMAT);
+ log_vector->i_type = XLOG_REG_TYPE_EFD_FORMAT;
ASSERT(size >= sizeof(xfs_efd_log_format_t));
}
diff --git a/fs/xfs/xfs_filestream.c b/fs/xfs/xfs_filestream.c
index a631e1451abb..390850ee6603 100644
--- a/fs/xfs/xfs_filestream.c
+++ b/fs/xfs/xfs_filestream.c
@@ -140,6 +140,7 @@ _xfs_filestream_pick_ag(
int flags,
xfs_extlen_t minlen)
{
+ int streams, max_streams;
int err, trylock, nscan;
xfs_extlen_t longest, free, minfree, maxfree = 0;
xfs_agnumber_t ag, max_ag = NULLAGNUMBER;
@@ -155,15 +156,15 @@ _xfs_filestream_pick_ag(
trylock = XFS_ALLOC_FLAG_TRYLOCK;
for (nscan = 0; 1; nscan++) {
-
- TRACE_AG_SCAN(mp, ag, xfs_filestream_peek_ag(mp, ag));
-
- pag = mp->m_perag + ag;
+ pag = xfs_perag_get(mp, ag);
+ TRACE_AG_SCAN(mp, ag, atomic_read(&pag->pagf_fstrms));
if (!pag->pagf_init) {
err = xfs_alloc_pagf_init(mp, NULL, ag, trylock);
- if (err && !trylock)
+ if (err && !trylock) {
+ xfs_perag_put(pag);
return err;
+ }
}
/* Might fail sometimes during the 1st pass with trylock set. */
@@ -173,6 +174,7 @@ _xfs_filestream_pick_ag(
/* Keep track of the AG with the most free blocks. */
if (pag->pagf_freeblks > maxfree) {
maxfree = pag->pagf_freeblks;
+ max_streams = atomic_read(&pag->pagf_fstrms);
max_ag = ag;
}
@@ -195,6 +197,8 @@ _xfs_filestream_pick_ag(
/* Break out, retaining the reference on the AG. */
free = pag->pagf_freeblks;
+ streams = atomic_read(&pag->pagf_fstrms);
+ xfs_perag_put(pag);
*agp = ag;
break;
}
@@ -202,6 +206,7 @@ _xfs_filestream_pick_ag(
/* Drop the reference on this AG, it's not usable. */
xfs_filestream_put_ag(mp, ag);
next_ag:
+ xfs_perag_put(pag);
/* Move to the next AG, wrapping to AG 0 if necessary. */
if (++ag >= mp->m_sb.sb_agcount)
ag = 0;
@@ -229,6 +234,7 @@ next_ag:
if (max_ag != NULLAGNUMBER) {
xfs_filestream_get_ag(mp, max_ag);
TRACE_AG_PICK1(mp, max_ag, maxfree);
+ streams = max_streams;
free = maxfree;
*agp = max_ag;
break;
@@ -240,16 +246,14 @@ next_ag:
return 0;
}
- TRACE_AG_PICK2(mp, startag, *agp, xfs_filestream_peek_ag(mp, *agp),
- free, nscan, flags);
+ TRACE_AG_PICK2(mp, startag, *agp, streams, free, nscan, flags);
return 0;
}
/*
* Set the allocation group number for a file or a directory, updating inode
- * references and per-AG references as appropriate. Must be called with the
- * m_peraglock held in read mode.
+ * references and per-AG references as appropriate.
*/
static int
_xfs_filestream_update_ag(
@@ -451,20 +455,6 @@ xfs_filestream_unmount(
}
/*
- * If the mount point's m_perag array is going to be reallocated, all
- * outstanding cache entries must be flushed to avoid accessing reference count
- * addresses that have been freed. The call to xfs_filestream_flush() must be
- * made inside the block that holds the m_peraglock in write mode to do the
- * reallocation.
- */
-void
-xfs_filestream_flush(
- xfs_mount_t *mp)
-{
- xfs_mru_cache_flush(mp->m_filestream);
-}
-
-/*
* Return the AG of the filestream the file or directory belongs to, or
* NULLAGNUMBER otherwise.
*/
@@ -526,7 +516,6 @@ xfs_filestream_associate(
mp = pip->i_mount;
cache = mp->m_filestream;
- down_read(&mp->m_peraglock);
/*
* We have a problem, Houston.
@@ -543,10 +532,8 @@ xfs_filestream_associate(
*
* So, if we can't get the iolock without sleeping then just give up
*/
- if (!xfs_ilock_nowait(pip, XFS_IOLOCK_EXCL)) {
- up_read(&mp->m_peraglock);
+ if (!xfs_ilock_nowait(pip, XFS_IOLOCK_EXCL))
return 1;
- }
/* If the parent directory is already in the cache, use its AG. */
item = xfs_mru_cache_lookup(cache, pip->i_ino);
@@ -601,7 +588,6 @@ exit_did_pick:
exit:
xfs_iunlock(pip, XFS_IOLOCK_EXCL);
- up_read(&mp->m_peraglock);
return -err;
}
diff --git a/fs/xfs/xfs_filestream.h b/fs/xfs/xfs_filestream.h
index 4aba67c5f64f..260f757bbc5d 100644
--- a/fs/xfs/xfs_filestream.h
+++ b/fs/xfs/xfs_filestream.h
@@ -79,12 +79,21 @@ extern ktrace_t *xfs_filestreams_trace_buf;
* the cache that reference per-ag array elements that have since been
* reallocated.
*/
+/*
+ * xfs_filestream_peek_ag is only used in tracing code
+ */
static inline int
xfs_filestream_peek_ag(
xfs_mount_t *mp,
xfs_agnumber_t agno)
{
- return atomic_read(&mp->m_perag[agno].pagf_fstrms);
+ struct xfs_perag *pag;
+ int ret;
+
+ pag = xfs_perag_get(mp, agno);
+ ret = atomic_read(&pag->pagf_fstrms);
+ xfs_perag_put(pag);
+ return ret;
}
static inline int
@@ -92,7 +101,13 @@ xfs_filestream_get_ag(
xfs_mount_t *mp,
xfs_agnumber_t agno)
{
- return atomic_inc_return(&mp->m_perag[agno].pagf_fstrms);
+ struct xfs_perag *pag;
+ int ret;
+
+ pag = xfs_perag_get(mp, agno);
+ ret = atomic_inc_return(&pag->pagf_fstrms);
+ xfs_perag_put(pag);
+ return ret;
}
static inline int
@@ -100,7 +115,13 @@ xfs_filestream_put_ag(
xfs_mount_t *mp,
xfs_agnumber_t agno)
{
- return atomic_dec_return(&mp->m_perag[agno].pagf_fstrms);
+ struct xfs_perag *pag;
+ int ret;
+
+ pag = xfs_perag_get(mp, agno);
+ ret = atomic_dec_return(&pag->pagf_fstrms);
+ xfs_perag_put(pag);
+ return ret;
}
/* allocation selection flags */
@@ -114,7 +135,6 @@ int xfs_filestream_init(void);
void xfs_filestream_uninit(void);
int xfs_filestream_mount(struct xfs_mount *mp);
void xfs_filestream_unmount(struct xfs_mount *mp);
-void xfs_filestream_flush(struct xfs_mount *mp);
xfs_agnumber_t xfs_filestream_lookup_ag(struct xfs_inode *ip);
int xfs_filestream_associate(struct xfs_inode *dip, struct xfs_inode *ip);
void xfs_filestream_deassociate(struct xfs_inode *ip);
diff --git a/fs/xfs/xfs_fsops.c b/fs/xfs/xfs_fsops.c
index a13919a6a364..37a6f62c57b6 100644
--- a/fs/xfs/xfs_fsops.c
+++ b/fs/xfs/xfs_fsops.c
@@ -167,27 +167,14 @@ xfs_growfs_data_private(
}
new = nb - mp->m_sb.sb_dblocks;
oagcount = mp->m_sb.sb_agcount;
- if (nagcount > oagcount) {
- void *new_perag, *old_perag;
-
- xfs_filestream_flush(mp);
-
- new_perag = kmem_zalloc(sizeof(xfs_perag_t) * nagcount,
- KM_MAYFAIL);
- if (!new_perag)
- return XFS_ERROR(ENOMEM);
-
- down_write(&mp->m_peraglock);
- memcpy(new_perag, mp->m_perag, sizeof(xfs_perag_t) * oagcount);
- old_perag = mp->m_perag;
- mp->m_perag = new_perag;
-
- mp->m_flags |= XFS_MOUNT_32BITINODES;
- nagimax = xfs_initialize_perag(mp, nagcount);
- up_write(&mp->m_peraglock);
- kmem_free(old_perag);
+ /* allocate the new per-ag structures */
+ if (nagcount > oagcount) {
+ error = xfs_initialize_perag(mp, nagcount, &nagimax);
+ if (error)
+ return error;
}
+
tp = xfs_trans_alloc(mp, XFS_TRANS_GROWFS);
tp->t_flags |= XFS_TRANS_RESERVE;
if ((error = xfs_trans_reserve(tp, XFS_GROWFS_SPACE_RES(mp),
@@ -196,6 +183,11 @@ xfs_growfs_data_private(
return error;
}
+ /*
+ * Write new AG headers to disk. Non-transactional, but written
+ * synchronously so they are completed prior to the growfs transaction
+ * being logged.
+ */
nfree = 0;
for (agno = nagcount - 1; agno >= oagcount; agno--, new -= agsize) {
/*
@@ -359,6 +351,12 @@ xfs_growfs_data_private(
goto error0;
}
}
+
+ /*
+ * Update changed superblock fields transactionally. These are not
+ * seen by the rest of the world until the transaction commit applies
+ * them atomically to the superblock.
+ */
if (nagcount > oagcount)
xfs_trans_mod_sb(tp, XFS_TRANS_SB_AGCOUNT, nagcount - oagcount);
if (nb > mp->m_sb.sb_dblocks)
@@ -369,9 +367,9 @@ xfs_growfs_data_private(
if (dpct)
xfs_trans_mod_sb(tp, XFS_TRANS_SB_IMAXPCT, dpct);
error = xfs_trans_commit(tp, 0);
- if (error) {
+ if (error)
return error;
- }
+
/* New allocation groups fully initialized, so update mount struct */
if (nagimax)
mp->m_maxagi = nagimax;
@@ -381,6 +379,8 @@ xfs_growfs_data_private(
mp->m_maxicount = icount << mp->m_sb.sb_inopblog;
} else
mp->m_maxicount = 0;
+
+ /* update secondary superblocks. */
for (agno = 1; agno < nagcount; agno++) {
error = xfs_read_buf(mp, mp->m_ddev_targp,
XFS_AGB_TO_DADDR(mp, agno, XFS_SB_BLOCK(mp)),
diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c
index cb907ba69c4c..9d884c127bb9 100644
--- a/fs/xfs/xfs_ialloc.c
+++ b/fs/xfs/xfs_ialloc.c
@@ -205,7 +205,7 @@ xfs_ialloc_inode_init(
d = XFS_AGB_TO_DADDR(mp, agno, agbno + (j * blks_per_cluster));
fbuf = xfs_trans_get_buf(tp, mp->m_ddev_targp, d,
mp->m_bsize * blks_per_cluster,
- XFS_BUF_LOCK);
+ XBF_LOCK);
ASSERT(fbuf);
ASSERT(!XFS_BUF_GETERROR(fbuf));
@@ -253,6 +253,7 @@ xfs_ialloc_ag_alloc(
xfs_agino_t thisino; /* current inode number, for loop */
int isaligned = 0; /* inode allocation at stripe unit */
/* boundary */
+ struct xfs_perag *pag;
args.tp = tp;
args.mp = tp->t_mountp;
@@ -382,9 +383,9 @@ xfs_ialloc_ag_alloc(
newino = XFS_OFFBNO_TO_AGINO(args.mp, args.agbno, 0);
be32_add_cpu(&agi->agi_count, newlen);
be32_add_cpu(&agi->agi_freecount, newlen);
- down_read(&args.mp->m_peraglock);
- args.mp->m_perag[agno].pagi_freecount += newlen;
- up_read(&args.mp->m_peraglock);
+ pag = xfs_perag_get(args.mp, agno);
+ pag->pagi_freecount += newlen;
+ xfs_perag_put(pag);
agi->agi_newino = cpu_to_be32(newino);
/*
@@ -486,9 +487,8 @@ xfs_ialloc_ag_select(
*/
agno = pagno;
flags = XFS_ALLOC_FLAG_TRYLOCK;
- down_read(&mp->m_peraglock);
for (;;) {
- pag = &mp->m_perag[agno];
+ pag = xfs_perag_get(mp, agno);
if (!pag->pagi_init) {
if (xfs_ialloc_read_agi(mp, tp, agno, &agbp)) {
agbp = NULL;
@@ -527,7 +527,7 @@ xfs_ialloc_ag_select(
agbp = NULL;
goto nextag;
}
- up_read(&mp->m_peraglock);
+ xfs_perag_put(pag);
return agbp;
}
}
@@ -535,22 +535,19 @@ unlock_nextag:
if (agbp)
xfs_trans_brelse(tp, agbp);
nextag:
+ xfs_perag_put(pag);
/*
* No point in iterating over the rest, if we're shutting
* down.
*/
- if (XFS_FORCED_SHUTDOWN(mp)) {
- up_read(&mp->m_peraglock);
+ if (XFS_FORCED_SHUTDOWN(mp))
return NULL;
- }
agno++;
if (agno >= agcount)
agno = 0;
if (agno == pagno) {
- if (flags == 0) {
- up_read(&mp->m_peraglock);
+ if (flags == 0)
return NULL;
- }
flags = 0;
}
}
@@ -672,6 +669,7 @@ xfs_dialloc(
xfs_agnumber_t tagno; /* testing allocation group number */
xfs_btree_cur_t *tcur; /* temp cursor */
xfs_inobt_rec_incore_t trec; /* temp inode allocation record */
+ struct xfs_perag *pag;
if (*IO_agbp == NULL) {
@@ -771,13 +769,13 @@ nextag:
*inop = NULLFSINO;
return noroom ? ENOSPC : 0;
}
- down_read(&mp->m_peraglock);
- if (mp->m_perag[tagno].pagi_inodeok == 0) {
- up_read(&mp->m_peraglock);
+ pag = xfs_perag_get(mp, tagno);
+ if (pag->pagi_inodeok == 0) {
+ xfs_perag_put(pag);
goto nextag;
}
error = xfs_ialloc_read_agi(mp, tp, tagno, &agbp);
- up_read(&mp->m_peraglock);
+ xfs_perag_put(pag);
if (error)
goto nextag;
agi = XFS_BUF_TO_AGI(agbp);
@@ -790,6 +788,7 @@ nextag:
*/
agno = tagno;
*IO_agbp = NULL;
+ pag = xfs_perag_get(mp, agno);
restart_pagno:
cur = xfs_inobt_init_cursor(mp, tp, agbp, be32_to_cpu(agi->agi_seqno));
@@ -808,7 +807,6 @@ nextag:
* If in the same AG as the parent, try to get near the parent.
*/
if (pagno == agno) {
- xfs_perag_t *pag = &mp->m_perag[agno];
int doneleft; /* done, to the left */
int doneright; /* done, to the right */
int searchdistance = 10;
@@ -1006,9 +1004,7 @@ alloc_inode:
goto error0;
be32_add_cpu(&agi->agi_freecount, -1);
xfs_ialloc_log_agi(tp, agbp, XFS_AGI_FREECOUNT);
- down_read(&mp->m_peraglock);
- mp->m_perag[tagno].pagi_freecount--;
- up_read(&mp->m_peraglock);
+ pag->pagi_freecount--;
error = xfs_check_agi_freecount(cur, agi);
if (error)
@@ -1016,12 +1012,14 @@ alloc_inode:
xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR);
xfs_trans_mod_sb(tp, XFS_TRANS_SB_IFREE, -1);
+ xfs_perag_put(pag);
*inop = ino;
return 0;
error1:
xfs_btree_del_cursor(tcur, XFS_BTREE_ERROR);
error0:
xfs_btree_del_cursor(cur, XFS_BTREE_ERROR);
+ xfs_perag_put(pag);
return error;
}
@@ -1052,6 +1050,7 @@ xfs_difree(
xfs_mount_t *mp; /* mount structure for filesystem */
int off; /* offset of inode in inode chunk */
xfs_inobt_rec_incore_t rec; /* btree record */
+ struct xfs_perag *pag;
mp = tp->t_mountp;
@@ -1088,9 +1087,7 @@ xfs_difree(
/*
* Get the allocation group header.
*/
- down_read(&mp->m_peraglock);
error = xfs_ialloc_read_agi(mp, tp, agno, &agbp);
- up_read(&mp->m_peraglock);
if (error) {
cmn_err(CE_WARN,
"xfs_difree: xfs_ialloc_read_agi() returned an error %d on %s. Returning error.",
@@ -1157,9 +1154,9 @@ xfs_difree(
be32_add_cpu(&agi->agi_count, -ilen);
be32_add_cpu(&agi->agi_freecount, -(ilen - 1));
xfs_ialloc_log_agi(tp, agbp, XFS_AGI_COUNT | XFS_AGI_FREECOUNT);
- down_read(&mp->m_peraglock);
- mp->m_perag[agno].pagi_freecount -= ilen - 1;
- up_read(&mp->m_peraglock);
+ pag = xfs_perag_get(mp, agno);
+ pag->pagi_freecount -= ilen - 1;
+ xfs_perag_put(pag);
xfs_trans_mod_sb(tp, XFS_TRANS_SB_ICOUNT, -ilen);
xfs_trans_mod_sb(tp, XFS_TRANS_SB_IFREE, -(ilen - 1));
@@ -1188,9 +1185,9 @@ xfs_difree(
*/
be32_add_cpu(&agi->agi_freecount, 1);
xfs_ialloc_log_agi(tp, agbp, XFS_AGI_FREECOUNT);
- down_read(&mp->m_peraglock);
- mp->m_perag[agno].pagi_freecount++;
- up_read(&mp->m_peraglock);
+ pag = xfs_perag_get(mp, agno);
+ pag->pagi_freecount++;
+ xfs_perag_put(pag);
xfs_trans_mod_sb(tp, XFS_TRANS_SB_IFREE, 1);
}
@@ -1312,9 +1309,7 @@ xfs_imap(
xfs_buf_t *agbp; /* agi buffer */
int i; /* temp state */
- down_read(&mp->m_peraglock);
error = xfs_ialloc_read_agi(mp, tp, agno, &agbp);
- up_read(&mp->m_peraglock);
if (error) {
xfs_fs_cmn_err(CE_ALERT, mp, "xfs_imap: "
"xfs_ialloc_read_agi() returned "
@@ -1379,7 +1374,6 @@ xfs_imap(
XFS_FSB_TO_BB(mp, mp->m_sb.sb_dblocks));
return XFS_ERROR(EINVAL);
}
-
return 0;
}
@@ -1523,8 +1517,7 @@ xfs_ialloc_read_agi(
return error;
agi = XFS_BUF_TO_AGI(*bpp);
- pag = &mp->m_perag[agno];
-
+ pag = xfs_perag_get(mp, agno);
if (!pag->pagi_init) {
pag->pagi_freecount = be32_to_cpu(agi->agi_freecount);
pag->pagi_count = be32_to_cpu(agi->agi_count);
@@ -1537,6 +1530,7 @@ xfs_ialloc_read_agi(
*/
ASSERT(pag->pagi_freecount == be32_to_cpu(agi->agi_freecount) ||
XFS_FORCED_SHUTDOWN(mp));
+ xfs_perag_put(pag);
return 0;
}
diff --git a/fs/xfs/xfs_iget.c b/fs/xfs/xfs_iget.c
index 155e798f30a1..e281eb4a1c49 100644
--- a/fs/xfs/xfs_iget.c
+++ b/fs/xfs/xfs_iget.c
@@ -374,7 +374,7 @@ xfs_iget(
return EINVAL;
/* get the perag structure and ensure that it's inode capable */
- pag = xfs_get_perag(mp, ino);
+ pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ino));
if (!pag->pagi_inodeok)
return EINVAL;
ASSERT(pag->pag_ici_init);
@@ -398,7 +398,7 @@ again:
if (error)
goto out_error_or_again;
}
- xfs_put_perag(mp, pag);
+ xfs_perag_put(pag);
*ipp = ip;
@@ -417,7 +417,7 @@ out_error_or_again:
delay(1);
goto again;
}
- xfs_put_perag(mp, pag);
+ xfs_perag_put(pag);
return error;
}
@@ -488,12 +488,12 @@ xfs_ireclaim(
* added to the tree assert that it's been there before to catch
* problems with the inode life time early on.
*/
- pag = xfs_get_perag(mp, ip->i_ino);
+ pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ip->i_ino));
write_lock(&pag->pag_ici_lock);
if (!radix_tree_delete(&pag->pag_ici_root, agino))
ASSERT(0);
write_unlock(&pag->pag_ici_lock);
- xfs_put_perag(mp, pag);
+ xfs_perag_put(pag);
/*
* Here we do an (almost) spurious inode lock in order to coordinate
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index ef77fd88c8e3..fa31360046d4 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -151,7 +151,7 @@ xfs_imap_to_bp(
"an error %d on %s. Returning error.",
error, mp->m_fsname);
} else {
- ASSERT(buf_flags & XFS_BUF_TRYLOCK);
+ ASSERT(buf_flags & XBF_TRYLOCK);
}
return error;
}
@@ -239,7 +239,7 @@ xfs_inotobp(
if (error)
return error;
- error = xfs_imap_to_bp(mp, tp, &imap, &bp, XFS_BUF_LOCK, imap_flags);
+ error = xfs_imap_to_bp(mp, tp, &imap, &bp, XBF_LOCK, imap_flags);
if (error)
return error;
@@ -285,7 +285,7 @@ xfs_itobp(
return error;
if (!bp) {
- ASSERT(buf_flags & XFS_BUF_TRYLOCK);
+ ASSERT(buf_flags & XBF_TRYLOCK);
ASSERT(tp == NULL);
*bpp = NULL;
return EAGAIN;
@@ -807,7 +807,7 @@ xfs_iread(
* Get pointers to the on-disk inode and the buffer containing it.
*/
error = xfs_imap_to_bp(mp, tp, &ip->i_imap, &bp,
- XFS_BUF_LOCK, iget_flags);
+ XBF_LOCK, iget_flags);
if (error)
return error;
dip = (xfs_dinode_t *)xfs_buf_offset(bp, ip->i_imap.im_boffset);
@@ -1751,7 +1751,7 @@ xfs_iunlink(
* Here we put the head pointer into our next pointer,
* and then we fall through to point the head at us.
*/
- error = xfs_itobp(mp, tp, ip, &dip, &ibp, XFS_BUF_LOCK);
+ error = xfs_itobp(mp, tp, ip, &dip, &ibp, XBF_LOCK);
if (error)
return error;
@@ -1833,7 +1833,7 @@ xfs_iunlink_remove(
* of dealing with the buffer when there is no need to
* change it.
*/
- error = xfs_itobp(mp, tp, ip, &dip, &ibp, XFS_BUF_LOCK);
+ error = xfs_itobp(mp, tp, ip, &dip, &ibp, XBF_LOCK);
if (error) {
cmn_err(CE_WARN,
"xfs_iunlink_remove: xfs_itobp() returned an error %d on %s. Returning error.",
@@ -1895,7 +1895,7 @@ xfs_iunlink_remove(
* Now last_ibp points to the buffer previous to us on
* the unlinked list. Pull us from the list.
*/
- error = xfs_itobp(mp, tp, ip, &dip, &ibp, XFS_BUF_LOCK);
+ error = xfs_itobp(mp, tp, ip, &dip, &ibp, XBF_LOCK);
if (error) {
cmn_err(CE_WARN,
"xfs_iunlink_remove: xfs_itobp() returned an error %d on %s. Returning error.",
@@ -1946,8 +1946,9 @@ xfs_ifree_cluster(
xfs_inode_t *ip, **ip_found;
xfs_inode_log_item_t *iip;
xfs_log_item_t *lip;
- xfs_perag_t *pag = xfs_get_perag(mp, inum);
+ struct xfs_perag *pag;
+ pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, inum));
if (mp->m_sb.sb_blocksize >= XFS_INODE_CLUSTER_SIZE(mp)) {
blks_per_cluster = 1;
ninodes = mp->m_sb.sb_inopblock;
@@ -2039,7 +2040,7 @@ xfs_ifree_cluster(
bp = xfs_trans_get_buf(tp, mp->m_ddev_targp, blkno,
mp->m_bsize * blks_per_cluster,
- XFS_BUF_LOCK);
+ XBF_LOCK);
pre_flushed = 0;
lip = XFS_BUF_FSPRIVATE(bp, xfs_log_item_t *);
@@ -2088,7 +2089,7 @@ xfs_ifree_cluster(
}
kmem_free(ip_found);
- xfs_put_perag(mp, pag);
+ xfs_perag_put(pag);
}
/*
@@ -2150,7 +2151,7 @@ xfs_ifree(
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
- error = xfs_itobp(ip->i_mount, tp, ip, &dip, &ibp, XFS_BUF_LOCK);
+ error = xfs_itobp(ip->i_mount, tp, ip, &dip, &ibp, XBF_LOCK);
if (error)
return error;
@@ -2483,13 +2484,16 @@ __xfs_iunpin_wait(
return;
/* Give the log a push to start the unpinning I/O */
- xfs_log_force(ip->i_mount, (iip && iip->ili_last_lsn) ?
- iip->ili_last_lsn : 0, XFS_LOG_FORCE);
+ if (iip && iip->ili_last_lsn)
+ xfs_log_force_lsn(ip->i_mount, iip->ili_last_lsn, 0);
+ else
+ xfs_log_force(ip->i_mount, 0);
+
if (wait)
wait_event(ip->i_ipin_wait, (atomic_read(&ip->i_pincount) == 0));
}
-static inline void
+void
xfs_iunpin_wait(
xfs_inode_t *ip)
{
@@ -2675,7 +2679,7 @@ xfs_iflush_cluster(
xfs_buf_t *bp)
{
xfs_mount_t *mp = ip->i_mount;
- xfs_perag_t *pag = xfs_get_perag(mp, ip->i_ino);
+ struct xfs_perag *pag;
unsigned long first_index, mask;
unsigned long inodes_per_cluster;
int ilist_size;
@@ -2686,6 +2690,7 @@ xfs_iflush_cluster(
int bufwasdelwri;
int i;
+ pag = xfs_perag_get(mp, XFS_INO_TO_AGNO(mp, ip->i_ino));
ASSERT(pag->pagi_inodeok);
ASSERT(pag->pag_ici_init);
@@ -2693,7 +2698,7 @@ xfs_iflush_cluster(
ilist_size = inodes_per_cluster * sizeof(xfs_inode_t *);
ilist = kmem_alloc(ilist_size, KM_MAYFAIL|KM_NOFS);
if (!ilist)
- return 0;
+ goto out_put;
mask = ~(((XFS_INODE_CLUSTER_SIZE(mp) >> mp->m_sb.sb_inodelog)) - 1);
first_index = XFS_INO_TO_AGINO(mp, ip->i_ino) & mask;
@@ -2762,6 +2767,8 @@ xfs_iflush_cluster(
out_free:
read_unlock(&pag->pag_ici_lock);
kmem_free(ilist);
+out_put:
+ xfs_perag_put(pag);
return 0;
@@ -2805,6 +2812,7 @@ cluster_corrupt_out:
*/
xfs_iflush_abort(iq);
kmem_free(ilist);
+ xfs_perag_put(pag);
return XFS_ERROR(EFSCORRUPTED);
}
@@ -2827,8 +2835,6 @@ xfs_iflush(
xfs_dinode_t *dip;
xfs_mount_t *mp;
int error;
- int noblock = (flags == XFS_IFLUSH_ASYNC_NOBLOCK);
- enum { INT_DELWRI = (1 << 0), INT_ASYNC = (1 << 1) };
XFS_STATS_INC(xs_iflush_count);
@@ -2841,15 +2847,6 @@ xfs_iflush(
mp = ip->i_mount;
/*
- * If the inode isn't dirty, then just release the inode flush lock and
- * do nothing.
- */
- if (xfs_inode_clean(ip)) {
- xfs_ifunlock(ip);
- return 0;
- }
-
- /*
* We can't flush the inode until it is unpinned, so wait for it if we
* are allowed to block. We know noone new can pin it, because we are
* holding the inode lock shared and you need to hold it exclusively to
@@ -2860,7 +2857,7 @@ xfs_iflush(
* in the same cluster are dirty, they will probably write the inode
* out for us if they occur after the log force completes.
*/
- if (noblock && xfs_ipincount(ip)) {
+ if (!(flags & SYNC_WAIT) && xfs_ipincount(ip)) {
xfs_iunpin_nowait(ip);
xfs_ifunlock(ip);
return EAGAIN;
@@ -2894,60 +2891,10 @@ xfs_iflush(
}
/*
- * Decide how buffer will be flushed out. This is done before
- * the call to xfs_iflush_int because this field is zeroed by it.
- */
- if (iip != NULL && iip->ili_format.ilf_fields != 0) {
- /*
- * Flush out the inode buffer according to the directions
- * of the caller. In the cases where the caller has given
- * us a choice choose the non-delwri case. This is because
- * the inode is in the AIL and we need to get it out soon.
- */
- switch (flags) {
- case XFS_IFLUSH_SYNC:
- case XFS_IFLUSH_DELWRI_ELSE_SYNC:
- flags = 0;
- break;
- case XFS_IFLUSH_ASYNC_NOBLOCK:
- case XFS_IFLUSH_ASYNC:
- case XFS_IFLUSH_DELWRI_ELSE_ASYNC:
- flags = INT_ASYNC;
- break;
- case XFS_IFLUSH_DELWRI:
- flags = INT_DELWRI;
- break;
- default:
- ASSERT(0);
- flags = 0;
- break;
- }
- } else {
- switch (flags) {
- case XFS_IFLUSH_DELWRI_ELSE_SYNC:
- case XFS_IFLUSH_DELWRI_ELSE_ASYNC:
- case XFS_IFLUSH_DELWRI:
- flags = INT_DELWRI;
- break;
- case XFS_IFLUSH_ASYNC_NOBLOCK:
- case XFS_IFLUSH_ASYNC:
- flags = INT_ASYNC;
- break;
- case XFS_IFLUSH_SYNC:
- flags = 0;
- break;
- default:
- ASSERT(0);
- flags = 0;
- break;
- }
- }
-
- /*
* Get the buffer containing the on-disk inode.
*/
error = xfs_itobp(mp, NULL, ip, &dip, &bp,
- noblock ? XFS_BUF_TRYLOCK : XFS_BUF_LOCK);
+ (flags & SYNC_WAIT) ? XBF_LOCK : XBF_TRYLOCK);
if (error || !bp) {
xfs_ifunlock(ip);
return error;
@@ -2965,7 +2912,7 @@ xfs_iflush(
* get stuck waiting in the write for too long.
*/
if (XFS_BUF_ISPINNED(bp))
- xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE);
+ xfs_log_force(mp, 0);
/*
* inode clustering:
@@ -2975,13 +2922,10 @@ xfs_iflush(
if (error)
goto cluster_corrupt_out;
- if (flags & INT_DELWRI) {
- xfs_bdwrite(mp, bp);
- } else if (flags & INT_ASYNC) {
- error = xfs_bawrite(mp, bp);
- } else {
+ if (flags & SYNC_WAIT)
error = xfs_bwrite(mp, bp);
- }
+ else
+ xfs_bdwrite(mp, bp);
return error;
corrupt_out:
@@ -3016,16 +2960,6 @@ xfs_iflush_int(
iip = ip->i_itemp;
mp = ip->i_mount;
-
- /*
- * If the inode isn't dirty, then just release the inode
- * flush lock and do nothing.
- */
- if (xfs_inode_clean(ip)) {
- xfs_ifunlock(ip);
- return 0;
- }
-
/* set *dip = inode's place in the buffer */
dip = (xfs_dinode_t *)xfs_buf_offset(bp, ip->i_imap.im_boffset);
diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
index ec1f28c4fc4f..6c912b027596 100644
--- a/fs/xfs/xfs_inode.h
+++ b/fs/xfs/xfs_inode.h
@@ -420,16 +420,6 @@ static inline void xfs_ifunlock(xfs_inode_t *ip)
#define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) >> XFS_ILOCK_SHIFT)
/*
- * Flags for xfs_iflush()
- */
-#define XFS_IFLUSH_DELWRI_ELSE_SYNC 1
-#define XFS_IFLUSH_DELWRI_ELSE_ASYNC 2
-#define XFS_IFLUSH_SYNC 3
-#define XFS_IFLUSH_ASYNC 4
-#define XFS_IFLUSH_DELWRI 5
-#define XFS_IFLUSH_ASYNC_NOBLOCK 6
-
-/*
* Flags for xfs_itruncate_start().
*/
#define XFS_ITRUNC_DEFINITE 0x1
@@ -483,6 +473,7 @@ int xfs_iunlink(struct xfs_trans *, xfs_inode_t *);
void xfs_iext_realloc(xfs_inode_t *, int, int);
void xfs_ipin(xfs_inode_t *);
void xfs_iunpin(xfs_inode_t *);
+void xfs_iunpin_wait(xfs_inode_t *);
int xfs_iflush(xfs_inode_t *, uint);
void xfs_ichgtime(xfs_inode_t *, int);
void xfs_lock_inodes(xfs_inode_t **, int, uint);
diff --git a/fs/xfs/xfs_inode_item.c b/fs/xfs/xfs_inode_item.c
index f38855d21ea5..d4dc063111f8 100644
--- a/fs/xfs/xfs_inode_item.c
+++ b/fs/xfs/xfs_inode_item.c
@@ -228,7 +228,7 @@ xfs_inode_item_format(
vecp->i_addr = (xfs_caddr_t)&iip->ili_format;
vecp->i_len = sizeof(xfs_inode_log_format_t);
- XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_IFORMAT);
+ vecp->i_type = XLOG_REG_TYPE_IFORMAT;
vecp++;
nvecs = 1;
@@ -279,7 +279,7 @@ xfs_inode_item_format(
vecp->i_addr = (xfs_caddr_t)&ip->i_d;
vecp->i_len = sizeof(struct xfs_icdinode);
- XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_ICORE);
+ vecp->i_type = XLOG_REG_TYPE_ICORE;
vecp++;
nvecs++;
iip->ili_format.ilf_fields |= XFS_ILOG_CORE;
@@ -336,7 +336,7 @@ xfs_inode_item_format(
vecp->i_addr =
(char *)(ip->i_df.if_u1.if_extents);
vecp->i_len = ip->i_df.if_bytes;
- XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_IEXT);
+ vecp->i_type = XLOG_REG_TYPE_IEXT;
} else
#endif
{
@@ -355,7 +355,7 @@ xfs_inode_item_format(
vecp->i_addr = (xfs_caddr_t)ext_buffer;
vecp->i_len = xfs_iextents_copy(ip, ext_buffer,
XFS_DATA_FORK);
- XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_IEXT);
+ vecp->i_type = XLOG_REG_TYPE_IEXT;
}
ASSERT(vecp->i_len <= ip->i_df.if_bytes);
iip->ili_format.ilf_dsize = vecp->i_len;
@@ -373,7 +373,7 @@ xfs_inode_item_format(
ASSERT(ip->i_df.if_broot != NULL);
vecp->i_addr = (xfs_caddr_t)ip->i_df.if_broot;
vecp->i_len = ip->i_df.if_broot_bytes;
- XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_IBROOT);
+ vecp->i_type = XLOG_REG_TYPE_IBROOT;
vecp++;
nvecs++;
iip->ili_format.ilf_dsize = ip->i_df.if_broot_bytes;
@@ -399,7 +399,7 @@ xfs_inode_item_format(
ASSERT((ip->i_df.if_real_bytes == 0) ||
(ip->i_df.if_real_bytes == data_bytes));
vecp->i_len = (int)data_bytes;
- XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_ILOCAL);
+ vecp->i_type = XLOG_REG_TYPE_ILOCAL;
vecp++;
nvecs++;
iip->ili_format.ilf_dsize = (unsigned)data_bytes;
@@ -477,7 +477,7 @@ xfs_inode_item_format(
vecp->i_len = xfs_iextents_copy(ip, ext_buffer,
XFS_ATTR_FORK);
#endif
- XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_IATTR_EXT);
+ vecp->i_type = XLOG_REG_TYPE_IATTR_EXT;
iip->ili_format.ilf_asize = vecp->i_len;
vecp++;
nvecs++;
@@ -492,7 +492,7 @@ xfs_inode_item_format(
ASSERT(ip->i_afp->if_broot != NULL);
vecp->i_addr = (xfs_caddr_t)ip->i_afp->if_broot;
vecp->i_len = ip->i_afp->if_broot_bytes;
- XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_IATTR_BROOT);
+ vecp->i_type = XLOG_REG_TYPE_IATTR_BROOT;
vecp++;
nvecs++;
iip->ili_format.ilf_asize = ip->i_afp->if_broot_bytes;
@@ -516,7 +516,7 @@ xfs_inode_item_format(
ASSERT((ip->i_afp->if_real_bytes == 0) ||
(ip->i_afp->if_real_bytes == data_bytes));
vecp->i_len = (int)data_bytes;
- XLOG_VEC_SET_TYPE(vecp, XLOG_REG_TYPE_IATTR_LOCAL);
+ vecp->i_type = XLOG_REG_TYPE_IATTR_LOCAL;
vecp++;
nvecs++;
iip->ili_format.ilf_asize = (unsigned)data_bytes;
@@ -602,33 +602,20 @@ xfs_inode_item_trylock(
if (!xfs_iflock_nowait(ip)) {
/*
- * If someone else isn't already trying to push the inode
- * buffer, we get to do it.
+ * inode has already been flushed to the backing buffer,
+ * leave it locked in shared mode, pushbuf routine will
+ * unlock it.
*/
- if (iip->ili_pushbuf_flag == 0) {
- iip->ili_pushbuf_flag = 1;
-#ifdef DEBUG
- iip->ili_push_owner = current_pid();
-#endif
- /*
- * Inode is left locked in shared mode.
- * Pushbuf routine gets to unlock it.
- */
- return XFS_ITEM_PUSHBUF;
- } else {
- /*
- * We hold the AIL lock, so we must specify the
- * NONOTIFY flag so that we won't double trip.
- */
- xfs_iunlock(ip, XFS_ILOCK_SHARED|XFS_IUNLOCK_NONOTIFY);
- return XFS_ITEM_FLUSHING;
- }
- /* NOTREACHED */
+ return XFS_ITEM_PUSHBUF;
}
/* Stale items should force out the iclog */
if (ip->i_flags & XFS_ISTALE) {
xfs_ifunlock(ip);
+ /*
+ * we hold the AIL lock - notify the unlock routine of this
+ * so it doesn't try to get the lock again.
+ */
xfs_iunlock(ip, XFS_ILOCK_SHARED|XFS_IUNLOCK_NONOTIFY);
return XFS_ITEM_PINNED;
}
@@ -746,11 +733,8 @@ xfs_inode_item_committed(
* This gets called by xfs_trans_push_ail(), when IOP_TRYLOCK
* failed to get the inode flush lock but did get the inode locked SHARED.
* Here we're trying to see if the inode buffer is incore, and if so whether it's
- * marked delayed write. If that's the case, we'll initiate a bawrite on that
- * buffer to expedite the process.
- *
- * We aren't holding the AIL lock (or the flush lock) when this gets called,
- * so it is inherently race-y.
+ * marked delayed write. If that's the case, we'll promote it and that will
+ * allow the caller to write the buffer by triggering the xfsbufd to run.
*/
STATIC void
xfs_inode_item_pushbuf(
@@ -759,82 +743,30 @@ xfs_inode_item_pushbuf(
xfs_inode_t *ip;
xfs_mount_t *mp;
xfs_buf_t *bp;
- uint dopush;
ip = iip->ili_inode;
-
ASSERT(xfs_isilocked(ip, XFS_ILOCK_SHARED));
/*
- * The ili_pushbuf_flag keeps others from
- * trying to duplicate our effort.
- */
- ASSERT(iip->ili_pushbuf_flag != 0);
- ASSERT(iip->ili_push_owner == current_pid());
-
- /*
* If a flush is not in progress anymore, chances are that the
* inode was taken off the AIL. So, just get out.
*/
if (completion_done(&ip->i_flush) ||
((iip->ili_item.li_flags & XFS_LI_IN_AIL) == 0)) {
- iip->ili_pushbuf_flag = 0;
xfs_iunlock(ip, XFS_ILOCK_SHARED);
return;
}
mp = ip->i_mount;
bp = xfs_incore(mp->m_ddev_targp, iip->ili_format.ilf_blkno,
- iip->ili_format.ilf_len, XFS_INCORE_TRYLOCK);
+ iip->ili_format.ilf_len, XBF_TRYLOCK);
- if (bp != NULL) {
- if (XFS_BUF_ISDELAYWRITE(bp)) {
- /*
- * We were racing with iflush because we don't hold
- * the AIL lock or the flush lock. However, at this point,
- * we have the buffer, and we know that it's dirty.
- * So, it's possible that iflush raced with us, and
- * this item is already taken off the AIL.
- * If not, we can flush it async.
- */
- dopush = ((iip->ili_item.li_flags & XFS_LI_IN_AIL) &&
- !completion_done(&ip->i_flush));
- iip->ili_pushbuf_flag = 0;
- xfs_iunlock(ip, XFS_ILOCK_SHARED);
-
- trace_xfs_inode_item_push(bp, _RET_IP_);
-
- if (XFS_BUF_ISPINNED(bp)) {
- xfs_log_force(mp, (xfs_lsn_t)0,
- XFS_LOG_FORCE);
- }
- if (dopush) {
- int error;
- error = xfs_bawrite(mp, bp);
- if (error)
- xfs_fs_cmn_err(CE_WARN, mp,
- "xfs_inode_item_pushbuf: pushbuf error %d on iip %p, bp %p",
- error, iip, bp);
- } else {
- xfs_buf_relse(bp);
- }
- } else {
- iip->ili_pushbuf_flag = 0;
- xfs_iunlock(ip, XFS_ILOCK_SHARED);
- xfs_buf_relse(bp);
- }
- return;
- }
- /*
- * We have to be careful about resetting pushbuf flag too early (above).
- * Even though in theory we can do it as soon as we have the buflock,
- * we don't want others to be doing work needlessly. They'll come to
- * this function thinking that pushing the buffer is their
- * responsibility only to find that the buffer is still locked by
- * another doing the same thing
- */
- iip->ili_pushbuf_flag = 0;
xfs_iunlock(ip, XFS_ILOCK_SHARED);
+ if (!bp)
+ return;
+ if (XFS_BUF_ISDELAYWRITE(bp))
+ xfs_buf_delwri_promote(bp);
+ xfs_buf_relse(bp);
return;
}
@@ -867,10 +799,14 @@ xfs_inode_item_push(
iip->ili_format.ilf_fields != 0);
/*
- * Write out the inode. The completion routine ('iflush_done') will
- * pull it from the AIL, mark it clean, unlock the flush lock.
+ * Push the inode to it's backing buffer. This will not remove the
+ * inode from the AIL - a further push will be required to trigger a
+ * buffer push. However, this allows all the dirty inodes to be pushed
+ * to the buffer before it is pushed to disk. THe buffer IO completion
+ * will pull th einode from the AIL, mark it clean and unlock the flush
+ * lock.
*/
- (void) xfs_iflush(ip, XFS_IFLUSH_ASYNC);
+ (void) xfs_iflush(ip, 0);
xfs_iunlock(ip, XFS_ILOCK_SHARED);
return;
@@ -934,7 +870,6 @@ xfs_inode_item_init(
/*
We have zeroed memory. No need ...
iip->ili_extents_buf = NULL;
- iip->ili_pushbuf_flag = 0;
*/
iip->ili_format.ilf_type = XFS_LI_INODE;
diff --git a/fs/xfs/xfs_inode_item.h b/fs/xfs/xfs_inode_item.h
index cc8df1ac7783..9a467958ecdd 100644
--- a/fs/xfs/xfs_inode_item.h
+++ b/fs/xfs/xfs_inode_item.h
@@ -144,12 +144,6 @@ typedef struct xfs_inode_log_item {
data exts */
struct xfs_bmbt_rec *ili_aextents_buf; /* array of logged
attr exts */
- unsigned int ili_pushbuf_flag; /* one bit used in push_ail */
-
-#ifdef DEBUG
- uint64_t ili_push_owner; /* one who sets pushbuf_flag
- above gets to push the buf */
-#endif
#ifdef XFS_TRANS_DEBUG
int ili_root_size;
char *ili_orig_root;
diff --git a/fs/xfs/xfs_itable.c b/fs/xfs/xfs_itable.c
index 62efab2f3839..3af02314c605 100644
--- a/fs/xfs/xfs_itable.c
+++ b/fs/xfs/xfs_itable.c
@@ -408,8 +408,10 @@ xfs_bulkstat(
(XFS_INODE_CLUSTER_SIZE(mp) >> mp->m_sb.sb_inodelog);
nimask = ~(nicluster - 1);
nbcluster = nicluster >> mp->m_sb.sb_inopblog;
- irbuf = kmem_zalloc_greedy(&irbsize, PAGE_SIZE, PAGE_SIZE * 4,
- KM_SLEEP | KM_MAYFAIL | KM_LARGE);
+ irbuf = kmem_zalloc_greedy(&irbsize, PAGE_SIZE, PAGE_SIZE * 4);
+ if (!irbuf)
+ return ENOMEM;
+
nirbuf = irbsize / sizeof(*irbuf);
/*
@@ -420,9 +422,7 @@ xfs_bulkstat(
while (XFS_BULKSTAT_UBLEFT(ubleft) && agno < mp->m_sb.sb_agcount) {
cond_resched();
bp = NULL;
- down_read(&mp->m_peraglock);
error = xfs_ialloc_read_agi(mp, NULL, agno, &agbp);
- up_read(&mp->m_peraglock);
if (error) {
/*
* Skip this allocation group and go to the next one.
@@ -729,7 +729,7 @@ xfs_bulkstat(
/*
* Done, we're either out of filesystem or space to put the data.
*/
- kmem_free(irbuf);
+ kmem_free_large(irbuf);
*ubcountp = ubelem;
/*
* Found some inodes, return them now and return the error next time.
@@ -849,9 +849,7 @@ xfs_inumbers(
agbp = NULL;
while (left > 0 && agno < mp->m_sb.sb_agcount) {
if (agbp == NULL) {
- down_read(&mp->m_peraglock);
error = xfs_ialloc_read_agi(mp, NULL, agno, &agbp);
- up_read(&mp->m_peraglock);
if (error) {
/*
* If we can't read the AGI of this ag,
diff --git a/fs/xfs/xfs_log.c b/fs/xfs/xfs_log.c
index 600b5b06aaeb..4f16be4b6ee5 100644
--- a/fs/xfs/xfs_log.c
+++ b/fs/xfs/xfs_log.c
@@ -50,7 +50,6 @@ kmem_zone_t *xfs_log_ticket_zone;
(off) += (bytes);}
/* Local miscellaneous function prototypes */
-STATIC int xlog_bdstrat_cb(struct xfs_buf *);
STATIC int xlog_commit_record(xfs_mount_t *mp, xlog_ticket_t *ticket,
xlog_in_core_t **, xfs_lsn_t *);
STATIC xlog_t * xlog_alloc_log(xfs_mount_t *mp,
@@ -80,11 +79,6 @@ STATIC int xlog_state_release_iclog(xlog_t *log,
STATIC void xlog_state_switch_iclogs(xlog_t *log,
xlog_in_core_t *iclog,
int eventual_size);
-STATIC int xlog_state_sync(xlog_t *log,
- xfs_lsn_t lsn,
- uint flags,
- int *log_flushed);
-STATIC int xlog_state_sync_all(xlog_t *log, uint flags, int *log_flushed);
STATIC void xlog_state_want_sync(xlog_t *log, xlog_in_core_t *iclog);
/* local functions to manipulate grant head */
@@ -297,65 +291,6 @@ xfs_log_done(xfs_mount_t *mp,
return lsn;
} /* xfs_log_done */
-
-/*
- * Force the in-core log to disk. If flags == XFS_LOG_SYNC,
- * the force is done synchronously.
- *
- * Asynchronous forces are implemented by setting the WANT_SYNC
- * bit in the appropriate in-core log and then returning.
- *
- * Synchronous forces are implemented with a signal variable. All callers
- * to force a given lsn to disk will wait on a the sv attached to the
- * specific in-core log. When given in-core log finally completes its
- * write to disk, that thread will wake up all threads waiting on the
- * sv.
- */
-int
-_xfs_log_force(
- xfs_mount_t *mp,
- xfs_lsn_t lsn,
- uint flags,
- int *log_flushed)
-{
- xlog_t *log = mp->m_log;
- int dummy;
-
- if (!log_flushed)
- log_flushed = &dummy;
-
- ASSERT(flags & XFS_LOG_FORCE);
-
- XFS_STATS_INC(xs_log_force);
-
- if (log->l_flags & XLOG_IO_ERROR)
- return XFS_ERROR(EIO);
- if (lsn == 0)
- return xlog_state_sync_all(log, flags, log_flushed);
- else
- return xlog_state_sync(log, lsn, flags, log_flushed);
-} /* _xfs_log_force */
-
-/*
- * Wrapper for _xfs_log_force(), to be used when caller doesn't care
- * about errors or whether the log was flushed or not. This is the normal
- * interface to use when trying to unpin items or move the log forward.
- */
-void
-xfs_log_force(
- xfs_mount_t *mp,
- xfs_lsn_t lsn,
- uint flags)
-{
- int error;
- error = _xfs_log_force(mp, lsn, flags, NULL);
- if (error) {
- xfs_fs_cmn_err(CE_WARN, mp, "xfs_log_force: "
- "error %d returned.", error);
- }
-}
-
-
/*
* Attaches a new iclog I/O completion callback routine during
* transaction commit. If the log is in error state, a non-zero
@@ -602,7 +537,7 @@ xfs_log_unmount_write(xfs_mount_t *mp)
if (mp->m_flags & XFS_MOUNT_RDONLY)
return 0;
- error = _xfs_log_force(mp, 0, XFS_LOG_FORCE|XFS_LOG_SYNC, NULL);
+ error = _xfs_log_force(mp, XFS_LOG_SYNC, NULL);
ASSERT(error || !(XLOG_FORCED_SHUTDOWN(log)));
#ifdef DEBUG
@@ -618,7 +553,7 @@ xfs_log_unmount_write(xfs_mount_t *mp)
if (! (XLOG_FORCED_SHUTDOWN(log))) {
reg[0].i_addr = (void*)&magic;
reg[0].i_len = sizeof(magic);
- XLOG_VEC_SET_TYPE(&reg[0], XLOG_REG_TYPE_UNMOUNT);
+ reg[0].i_type = XLOG_REG_TYPE_UNMOUNT;
error = xfs_log_reserve(mp, 600, 1, &tic,
XFS_LOG, 0, XLOG_UNMOUNT_REC_TYPE);
@@ -988,35 +923,6 @@ xlog_iodone(xfs_buf_t *bp)
} /* xlog_iodone */
/*
- * The bdstrat callback function for log bufs. This gives us a central
- * place to trap bufs in case we get hit by a log I/O error and need to
- * shutdown. Actually, in practice, even when we didn't get a log error,
- * we transition the iclogs to IOERROR state *after* flushing all existing
- * iclogs to disk. This is because we don't want anymore new transactions to be
- * started or completed afterwards.
- */
-STATIC int
-xlog_bdstrat_cb(struct xfs_buf *bp)
-{
- xlog_in_core_t *iclog;
-
- iclog = XFS_BUF_FSPRIVATE(bp, xlog_in_core_t *);
-
- if ((iclog->ic_state & XLOG_STATE_IOERROR) == 0) {
- /* note for irix bstrat will need struct bdevsw passed
- * Fix the following macro if the code ever is merged
- */
- XFS_bdstrat(bp);
- return 0;
- }
-
- XFS_BUF_ERROR(bp, EIO);
- XFS_BUF_STALE(bp);
- xfs_biodone(bp);
- return XFS_ERROR(EIO);
-}
-
-/*
* Return size of each in-core log record buffer.
*
* All machines get 8 x 32kB buffers by default, unless tuned otherwise.
@@ -1158,7 +1064,6 @@ xlog_alloc_log(xfs_mount_t *mp,
if (!bp)
goto out_free_log;
XFS_BUF_SET_IODONE_FUNC(bp, xlog_iodone);
- XFS_BUF_SET_BDSTRAT_FUNC(bp, xlog_bdstrat_cb);
XFS_BUF_SET_FSPRIVATE2(bp, (unsigned long)1);
ASSERT(XFS_BUF_ISBUSY(bp));
ASSERT(XFS_BUF_VALUSEMA(bp) <= 0);
@@ -1196,7 +1101,6 @@ xlog_alloc_log(xfs_mount_t *mp,
if (!XFS_BUF_CPSEMA(bp))
ASSERT(0);
XFS_BUF_SET_IODONE_FUNC(bp, xlog_iodone);
- XFS_BUF_SET_BDSTRAT_FUNC(bp, xlog_bdstrat_cb);
XFS_BUF_SET_FSPRIVATE2(bp, (unsigned long)1);
iclog->ic_bp = bp;
iclog->ic_data = bp->b_addr;
@@ -1268,7 +1172,7 @@ xlog_commit_record(xfs_mount_t *mp,
reg[0].i_addr = NULL;
reg[0].i_len = 0;
- XLOG_VEC_SET_TYPE(&reg[0], XLOG_REG_TYPE_COMMIT);
+ reg[0].i_type = XLOG_REG_TYPE_COMMIT;
ASSERT_ALWAYS(iclog);
if ((error = xlog_write(mp, reg, 1, ticket, commitlsnp,
@@ -1343,6 +1247,37 @@ xlog_grant_push_ail(xfs_mount_t *mp,
xfs_trans_ail_push(log->l_ailp, threshold_lsn);
} /* xlog_grant_push_ail */
+/*
+ * The bdstrat callback function for log bufs. This gives us a central
+ * place to trap bufs in case we get hit by a log I/O error and need to
+ * shutdown. Actually, in practice, even when we didn't get a log error,
+ * we transition the iclogs to IOERROR state *after* flushing all existing
+ * iclogs to disk. This is because we don't want anymore new transactions to be
+ * started or completed afterwards.
+ */
+STATIC int
+xlog_bdstrat(
+ struct xfs_buf *bp)
+{
+ struct xlog_in_core *iclog;
+
+ iclog = XFS_BUF_FSPRIVATE(bp, xlog_in_core_t *);
+ if (iclog->ic_state & XLOG_STATE_IOERROR) {
+ XFS_BUF_ERROR(bp, EIO);
+ XFS_BUF_STALE(bp);
+ xfs_biodone(bp);
+ /*
+ * It would seem logical to return EIO here, but we rely on
+ * the log state machine to propagate I/O errors instead of
+ * doing it here.
+ */
+ return 0;
+ }
+
+ bp->b_flags |= _XBF_RUN_QUEUES;
+ xfs_buf_iorequest(bp);
+ return 0;
+}
/*
* Flush out the in-core log (iclog) to the on-disk log in an asynchronous
@@ -1462,7 +1397,7 @@ xlog_sync(xlog_t *log,
*/
XFS_BUF_WRITE(bp);
- if ((error = XFS_bwrite(bp))) {
+ if ((error = xlog_bdstrat(bp))) {
xfs_ioerror_alert("xlog_sync", log->l_mp, bp,
XFS_BUF_ADDR(bp));
return error;
@@ -1502,7 +1437,7 @@ xlog_sync(xlog_t *log,
/* account for internal log which doesn't start at block #0 */
XFS_BUF_SET_ADDR(bp, XFS_BUF_ADDR(bp) + log->l_logBBstart);
XFS_BUF_WRITE(bp);
- if ((error = XFS_bwrite(bp))) {
+ if ((error = xlog_bdstrat(bp))) {
xfs_ioerror_alert("xlog_sync (split)", log->l_mp,
bp, XFS_BUF_ADDR(bp));
return error;
@@ -2854,7 +2789,6 @@ xlog_state_switch_iclogs(xlog_t *log,
log->l_iclog = iclog->ic_next;
} /* xlog_state_switch_iclogs */
-
/*
* Write out all data in the in-core log as of this exact moment in time.
*
@@ -2882,11 +2816,17 @@ xlog_state_switch_iclogs(xlog_t *log,
* b) when we return from flushing out this iclog, it is still
* not in the active nor dirty state.
*/
-STATIC int
-xlog_state_sync_all(xlog_t *log, uint flags, int *log_flushed)
+int
+_xfs_log_force(
+ struct xfs_mount *mp,
+ uint flags,
+ int *log_flushed)
{
- xlog_in_core_t *iclog;
- xfs_lsn_t lsn;
+ struct log *log = mp->m_log;
+ struct xlog_in_core *iclog;
+ xfs_lsn_t lsn;
+
+ XFS_STATS_INC(xs_log_force);
spin_lock(&log->l_icloglock);
@@ -2932,7 +2872,9 @@ xlog_state_sync_all(xlog_t *log, uint flags, int *log_flushed)
if (xlog_state_release_iclog(log, iclog))
return XFS_ERROR(EIO);
- *log_flushed = 1;
+
+ if (log_flushed)
+ *log_flushed = 1;
spin_lock(&log->l_icloglock);
if (be64_to_cpu(iclog->ic_header.h_lsn) == lsn &&
iclog->ic_state != XLOG_STATE_DIRTY)
@@ -2976,19 +2918,37 @@ maybe_sleep:
*/
if (iclog->ic_state & XLOG_STATE_IOERROR)
return XFS_ERROR(EIO);
- *log_flushed = 1;
-
+ if (log_flushed)
+ *log_flushed = 1;
} else {
no_sleep:
spin_unlock(&log->l_icloglock);
}
return 0;
-} /* xlog_state_sync_all */
+}
+/*
+ * Wrapper for _xfs_log_force(), to be used when caller doesn't care
+ * about errors or whether the log was flushed or not. This is the normal
+ * interface to use when trying to unpin items or move the log forward.
+ */
+void
+xfs_log_force(
+ xfs_mount_t *mp,
+ uint flags)
+{
+ int error;
+
+ error = _xfs_log_force(mp, flags, NULL);
+ if (error) {
+ xfs_fs_cmn_err(CE_WARN, mp, "xfs_log_force: "
+ "error %d returned.", error);
+ }
+}
/*
- * Used by code which implements synchronous log forces.
+ * Force the in-core log to disk for a specific LSN.
*
* Find in-core log with lsn.
* If it is in the DIRTY state, just return.
@@ -2996,109 +2956,142 @@ no_sleep:
* state and go to sleep or return.
* If it is in any other state, go to sleep or return.
*
- * If filesystem activity goes to zero, the iclog will get flushed only by
- * bdflush().
+ * Synchronous forces are implemented with a signal variable. All callers
+ * to force a given lsn to disk will wait on a the sv attached to the
+ * specific in-core log. When given in-core log finally completes its
+ * write to disk, that thread will wake up all threads waiting on the
+ * sv.
*/
-STATIC int
-xlog_state_sync(xlog_t *log,
- xfs_lsn_t lsn,
- uint flags,
- int *log_flushed)
+int
+_xfs_log_force_lsn(
+ struct xfs_mount *mp,
+ xfs_lsn_t lsn,
+ uint flags,
+ int *log_flushed)
{
- xlog_in_core_t *iclog;
- int already_slept = 0;
+ struct log *log = mp->m_log;
+ struct xlog_in_core *iclog;
+ int already_slept = 0;
-try_again:
- spin_lock(&log->l_icloglock);
- iclog = log->l_iclog;
+ ASSERT(lsn != 0);
- if (iclog->ic_state & XLOG_STATE_IOERROR) {
- spin_unlock(&log->l_icloglock);
- return XFS_ERROR(EIO);
- }
-
- do {
- if (be64_to_cpu(iclog->ic_header.h_lsn) != lsn) {
- iclog = iclog->ic_next;
- continue;
- }
+ XFS_STATS_INC(xs_log_force);
- if (iclog->ic_state == XLOG_STATE_DIRTY) {
+try_again:
+ spin_lock(&log->l_icloglock);
+ iclog = log->l_iclog;
+ if (iclog->ic_state & XLOG_STATE_IOERROR) {
spin_unlock(&log->l_icloglock);
- return 0;
+ return XFS_ERROR(EIO);
}
- if (iclog->ic_state == XLOG_STATE_ACTIVE) {
- /*
- * We sleep here if we haven't already slept (e.g.
- * this is the first time we've looked at the correct
- * iclog buf) and the buffer before us is going to
- * be sync'ed. The reason for this is that if we
- * are doing sync transactions here, by waiting for
- * the previous I/O to complete, we can allow a few
- * more transactions into this iclog before we close
- * it down.
- *
- * Otherwise, we mark the buffer WANT_SYNC, and bump
- * up the refcnt so we can release the log (which drops
- * the ref count). The state switch keeps new transaction
- * commits from using this buffer. When the current commits
- * finish writing into the buffer, the refcount will drop to
- * zero and the buffer will go out then.
- */
- if (!already_slept &&
- (iclog->ic_prev->ic_state & (XLOG_STATE_WANT_SYNC |
- XLOG_STATE_SYNCING))) {
- ASSERT(!(iclog->ic_state & XLOG_STATE_IOERROR));
- XFS_STATS_INC(xs_log_force_sleep);
- sv_wait(&iclog->ic_prev->ic_write_wait, PSWP,
- &log->l_icloglock, s);
- *log_flushed = 1;
- already_slept = 1;
- goto try_again;
- } else {
+ do {
+ if (be64_to_cpu(iclog->ic_header.h_lsn) != lsn) {
+ iclog = iclog->ic_next;
+ continue;
+ }
+
+ if (iclog->ic_state == XLOG_STATE_DIRTY) {
+ spin_unlock(&log->l_icloglock);
+ return 0;
+ }
+
+ if (iclog->ic_state == XLOG_STATE_ACTIVE) {
+ /*
+ * We sleep here if we haven't already slept (e.g.
+ * this is the first time we've looked at the correct
+ * iclog buf) and the buffer before us is going to
+ * be sync'ed. The reason for this is that if we
+ * are doing sync transactions here, by waiting for
+ * the previous I/O to complete, we can allow a few
+ * more transactions into this iclog before we close
+ * it down.
+ *
+ * Otherwise, we mark the buffer WANT_SYNC, and bump
+ * up the refcnt so we can release the log (which
+ * drops the ref count). The state switch keeps new
+ * transaction commits from using this buffer. When
+ * the current commits finish writing into the buffer,
+ * the refcount will drop to zero and the buffer will
+ * go out then.
+ */
+ if (!already_slept &&
+ (iclog->ic_prev->ic_state &
+ (XLOG_STATE_WANT_SYNC | XLOG_STATE_SYNCING))) {
+ ASSERT(!(iclog->ic_state & XLOG_STATE_IOERROR));
+
+ XFS_STATS_INC(xs_log_force_sleep);
+
+ sv_wait(&iclog->ic_prev->ic_write_wait,
+ PSWP, &log->l_icloglock, s);
+ if (log_flushed)
+ *log_flushed = 1;
+ already_slept = 1;
+ goto try_again;
+ }
atomic_inc(&iclog->ic_refcnt);
xlog_state_switch_iclogs(log, iclog, 0);
spin_unlock(&log->l_icloglock);
if (xlog_state_release_iclog(log, iclog))
return XFS_ERROR(EIO);
- *log_flushed = 1;
+ if (log_flushed)
+ *log_flushed = 1;
spin_lock(&log->l_icloglock);
}
- }
- if ((flags & XFS_LOG_SYNC) && /* sleep */
- !(iclog->ic_state & (XLOG_STATE_ACTIVE | XLOG_STATE_DIRTY))) {
+ if ((flags & XFS_LOG_SYNC) && /* sleep */
+ !(iclog->ic_state &
+ (XLOG_STATE_ACTIVE | XLOG_STATE_DIRTY))) {
+ /*
+ * Don't wait on completion if we know that we've
+ * gotten a log write error.
+ */
+ if (iclog->ic_state & XLOG_STATE_IOERROR) {
+ spin_unlock(&log->l_icloglock);
+ return XFS_ERROR(EIO);
+ }
+ XFS_STATS_INC(xs_log_force_sleep);
+ sv_wait(&iclog->ic_force_wait, PSWP, &log->l_icloglock, s);
+ /*
+ * No need to grab the log lock here since we're
+ * only deciding whether or not to return EIO
+ * and the memory read should be atomic.
+ */
+ if (iclog->ic_state & XLOG_STATE_IOERROR)
+ return XFS_ERROR(EIO);
- /*
- * Don't wait on completion if we know that we've
- * gotten a log write error.
- */
- if (iclog->ic_state & XLOG_STATE_IOERROR) {
+ if (log_flushed)
+ *log_flushed = 1;
+ } else { /* just return */
spin_unlock(&log->l_icloglock);
- return XFS_ERROR(EIO);
}
- XFS_STATS_INC(xs_log_force_sleep);
- sv_wait(&iclog->ic_force_wait, PSWP, &log->l_icloglock, s);
- /*
- * No need to grab the log lock here since we're
- * only deciding whether or not to return EIO
- * and the memory read should be atomic.
- */
- if (iclog->ic_state & XLOG_STATE_IOERROR)
- return XFS_ERROR(EIO);
- *log_flushed = 1;
- } else { /* just return */
- spin_unlock(&log->l_icloglock);
- }
- return 0;
- } while (iclog != log->l_iclog);
+ return 0;
+ } while (iclog != log->l_iclog);
- spin_unlock(&log->l_icloglock);
- return 0;
-} /* xlog_state_sync */
+ spin_unlock(&log->l_icloglock);
+ return 0;
+}
+/*
+ * Wrapper for _xfs_log_force_lsn(), to be used when caller doesn't care
+ * about errors or whether the log was flushed or not. This is the normal
+ * interface to use when trying to unpin items or move the log forward.
+ */
+void
+xfs_log_force_lsn(
+ xfs_mount_t *mp,
+ xfs_lsn_t lsn,
+ uint flags)
+{
+ int error;
+
+ error = _xfs_log_force_lsn(mp, lsn, flags, NULL);
+ if (error) {
+ xfs_fs_cmn_err(CE_WARN, mp, "xfs_log_force: "
+ "error %d returned.", error);
+ }
+}
/*
* Called when we want to mark the current iclog as being ready to sync to
@@ -3463,7 +3456,6 @@ xfs_log_force_umount(
xlog_ticket_t *tic;
xlog_t *log;
int retval;
- int dummy;
log = mp->m_log;
@@ -3537,13 +3529,14 @@ xfs_log_force_umount(
}
spin_unlock(&log->l_grant_lock);
- if (! (log->l_iclog->ic_state & XLOG_STATE_IOERROR)) {
+ if (!(log->l_iclog->ic_state & XLOG_STATE_IOERROR)) {
ASSERT(!logerror);
/*
* Force the incore logs to disk before shutting the
* log down completely.
*/
- xlog_state_sync_all(log, XFS_LOG_FORCE|XFS_LOG_SYNC, &dummy);
+ _xfs_log_force(mp, XFS_LOG_SYNC, NULL);
+
spin_lock(&log->l_icloglock);
retval = xlog_state_ioerror(log);
spin_unlock(&log->l_icloglock);
diff --git a/fs/xfs/xfs_log.h b/fs/xfs/xfs_log.h
index d0c9baa50b1a..7074be9d13e9 100644
--- a/fs/xfs/xfs_log.h
+++ b/fs/xfs/xfs_log.h
@@ -70,14 +70,8 @@ static inline xfs_lsn_t _lsn_cmp(xfs_lsn_t lsn1, xfs_lsn_t lsn2)
* Flags to xfs_log_force()
*
* XFS_LOG_SYNC: Synchronous force in-core log to disk
- * XFS_LOG_FORCE: Start in-core log write now.
- * XFS_LOG_URGE: Start write within some window of time.
- *
- * Note: Either XFS_LOG_FORCE or XFS_LOG_URGE must be set.
*/
#define XFS_LOG_SYNC 0x1
-#define XFS_LOG_FORCE 0x2
-#define XFS_LOG_URGE 0x4
#endif /* __KERNEL__ */
@@ -110,10 +104,8 @@ static inline xfs_lsn_t _lsn_cmp(xfs_lsn_t lsn1, xfs_lsn_t lsn2)
#define XLOG_REG_TYPE_TRANSHDR 19
#define XLOG_REG_TYPE_MAX 19
-#define XLOG_VEC_SET_TYPE(vecp, t) ((vecp)->i_type = (t))
-
typedef struct xfs_log_iovec {
- xfs_caddr_t i_addr; /* beginning address of region */
+ xfs_caddr_t i_addr; /* beginning address of region */
int i_len; /* length in bytes of region */
uint i_type; /* type of region */
} xfs_log_iovec_t;
@@ -140,12 +132,17 @@ xfs_lsn_t xfs_log_done(struct xfs_mount *mp,
void **iclog,
uint flags);
int _xfs_log_force(struct xfs_mount *mp,
- xfs_lsn_t lsn,
uint flags,
int *log_forced);
void xfs_log_force(struct xfs_mount *mp,
- xfs_lsn_t lsn,
uint flags);
+int _xfs_log_force_lsn(struct xfs_mount *mp,
+ xfs_lsn_t lsn,
+ uint flags,
+ int *log_forced);
+void xfs_log_force_lsn(struct xfs_mount *mp,
+ xfs_lsn_t lsn,
+ uint flags);
int xfs_log_mount(struct xfs_mount *mp,
struct xfs_buftarg *log_target,
xfs_daddr_t start_block,
diff --git a/fs/xfs/xfs_log_priv.h b/fs/xfs/xfs_log_priv.h
index d55662db7077..fd02a18facd5 100644
--- a/fs/xfs/xfs_log_priv.h
+++ b/fs/xfs/xfs_log_priv.h
@@ -443,14 +443,9 @@ typedef struct log {
/* common routines */
extern xfs_lsn_t xlog_assign_tail_lsn(struct xfs_mount *mp);
-extern int xlog_find_tail(xlog_t *log,
- xfs_daddr_t *head_blk,
- xfs_daddr_t *tail_blk);
extern int xlog_recover(xlog_t *log);
extern int xlog_recover_finish(xlog_t *log);
extern void xlog_pack_data(xlog_t *log, xlog_in_core_t *iclog, int);
-extern struct xfs_buf *xlog_get_bp(xlog_t *, int);
-extern void xlog_put_bp(struct xfs_buf *);
extern kmem_zone_t *xfs_log_ticket_zone;
diff --git a/fs/xfs/xfs_log_recover.c b/fs/xfs/xfs_log_recover.c
index 69ac2e5ef20c..22e6efdc17ea 100644
--- a/fs/xfs/xfs_log_recover.c
+++ b/fs/xfs/xfs_log_recover.c
@@ -50,8 +50,6 @@
STATIC int xlog_find_zeroed(xlog_t *, xfs_daddr_t *);
STATIC int xlog_clear_stale_blocks(xlog_t *, xfs_lsn_t);
-STATIC void xlog_recover_insert_item_backq(xlog_recover_item_t **q,
- xlog_recover_item_t *item);
#if defined(DEBUG)
STATIC void xlog_recover_check_summary(xlog_t *);
#else
@@ -68,7 +66,7 @@ STATIC void xlog_recover_check_summary(xlog_t *);
((bbs + (log)->l_sectbb_mask + 1) & ~(log)->l_sectbb_mask) : (bbs) )
#define XLOG_SECTOR_ROUNDDOWN_BLKNO(log, bno) ((bno) & ~(log)->l_sectbb_mask)
-xfs_buf_t *
+STATIC xfs_buf_t *
xlog_get_bp(
xlog_t *log,
int nbblks)
@@ -88,7 +86,7 @@ xlog_get_bp(
return xfs_buf_get_noaddr(BBTOB(nbblks), log->l_mp->m_logdev_targp);
}
-void
+STATIC void
xlog_put_bp(
xfs_buf_t *bp)
{
@@ -805,7 +803,7 @@ xlog_find_head(
* We could speed up search by using current head_blk buffer, but it is not
* available.
*/
-int
+STATIC int
xlog_find_tail(
xlog_t *log,
xfs_daddr_t *head_blk,
@@ -1367,36 +1365,45 @@ xlog_clear_stale_blocks(
STATIC xlog_recover_t *
xlog_recover_find_tid(
- xlog_recover_t *q,
+ struct hlist_head *head,
xlog_tid_t tid)
{
- xlog_recover_t *p = q;
+ xlog_recover_t *trans;
+ struct hlist_node *n;
- while (p != NULL) {
- if (p->r_log_tid == tid)
- break;
- p = p->r_next;
+ hlist_for_each_entry(trans, n, head, r_list) {
+ if (trans->r_log_tid == tid)
+ return trans;
}
- return p;
+ return NULL;
}
STATIC void
-xlog_recover_put_hashq(
- xlog_recover_t **q,
- xlog_recover_t *trans)
+xlog_recover_new_tid(
+ struct hlist_head *head,
+ xlog_tid_t tid,
+ xfs_lsn_t lsn)
{
- trans->r_next = *q;
- *q = trans;
+ xlog_recover_t *trans;
+
+ trans = kmem_zalloc(sizeof(xlog_recover_t), KM_SLEEP);
+ trans->r_log_tid = tid;
+ trans->r_lsn = lsn;
+ INIT_LIST_HEAD(&trans->r_itemq);
+
+ INIT_HLIST_NODE(&trans->r_list);
+ hlist_add_head(&trans->r_list, head);
}
STATIC void
xlog_recover_add_item(
- xlog_recover_item_t **itemq)
+ struct list_head *head)
{
xlog_recover_item_t *item;
item = kmem_zalloc(sizeof(xlog_recover_item_t), KM_SLEEP);
- xlog_recover_insert_item_backq(itemq, item);
+ INIT_LIST_HEAD(&item->ri_list);
+ list_add_tail(&item->ri_list, head);
}
STATIC int
@@ -1409,8 +1416,7 @@ xlog_recover_add_to_cont_trans(
xfs_caddr_t ptr, old_ptr;
int old_len;
- item = trans->r_itemq;
- if (item == NULL) {
+ if (list_empty(&trans->r_itemq)) {
/* finish copying rest of trans header */
xlog_recover_add_item(&trans->r_itemq);
ptr = (xfs_caddr_t) &trans->r_theader +
@@ -1418,7 +1424,8 @@ xlog_recover_add_to_cont_trans(
memcpy(ptr, dp, len); /* d, s, l */
return 0;
}
- item = item->ri_prev;
+ /* take the tail entry */
+ item = list_entry(trans->r_itemq.prev, xlog_recover_item_t, ri_list);
old_ptr = item->ri_buf[item->ri_cnt-1].i_addr;
old_len = item->ri_buf[item->ri_cnt-1].i_len;
@@ -1455,8 +1462,7 @@ xlog_recover_add_to_trans(
if (!len)
return 0;
- item = trans->r_itemq;
- if (item == NULL) {
+ if (list_empty(&trans->r_itemq)) {
/* we need to catch log corruptions here */
if (*(uint *)dp != XFS_TRANS_HEADER_MAGIC) {
xlog_warn("XFS: xlog_recover_add_to_trans: "
@@ -1474,12 +1480,15 @@ xlog_recover_add_to_trans(
memcpy(ptr, dp, len);
in_f = (xfs_inode_log_format_t *)ptr;
- if (item->ri_prev->ri_total != 0 &&
- item->ri_prev->ri_total == item->ri_prev->ri_cnt) {
+ /* take the tail entry */
+ item = list_entry(trans->r_itemq.prev, xlog_recover_item_t, ri_list);
+ if (item->ri_total != 0 &&
+ item->ri_total == item->ri_cnt) {
+ /* tail item is in use, get a new one */
xlog_recover_add_item(&trans->r_itemq);
+ item = list_entry(trans->r_itemq.prev,
+ xlog_recover_item_t, ri_list);
}
- item = trans->r_itemq;
- item = item->ri_prev;
if (item->ri_total == 0) { /* first region to be added */
if (in_f->ilf_size == 0 ||
@@ -1504,96 +1513,29 @@ xlog_recover_add_to_trans(
return 0;
}
-STATIC void
-xlog_recover_new_tid(
- xlog_recover_t **q,
- xlog_tid_t tid,
- xfs_lsn_t lsn)
-{
- xlog_recover_t *trans;
-
- trans = kmem_zalloc(sizeof(xlog_recover_t), KM_SLEEP);
- trans->r_log_tid = tid;
- trans->r_lsn = lsn;
- xlog_recover_put_hashq(q, trans);
-}
-
-STATIC int
-xlog_recover_unlink_tid(
- xlog_recover_t **q,
- xlog_recover_t *trans)
-{
- xlog_recover_t *tp;
- int found = 0;
-
- ASSERT(trans != NULL);
- if (trans == *q) {
- *q = (*q)->r_next;
- } else {
- tp = *q;
- while (tp) {
- if (tp->r_next == trans) {
- found = 1;
- break;
- }
- tp = tp->r_next;
- }
- if (!found) {
- xlog_warn(
- "XFS: xlog_recover_unlink_tid: trans not found");
- ASSERT(0);
- return XFS_ERROR(EIO);
- }
- tp->r_next = tp->r_next->r_next;
- }
- return 0;
-}
-
-STATIC void
-xlog_recover_insert_item_backq(
- xlog_recover_item_t **q,
- xlog_recover_item_t *item)
-{
- if (*q == NULL) {
- item->ri_prev = item->ri_next = item;
- *q = item;
- } else {
- item->ri_next = *q;
- item->ri_prev = (*q)->ri_prev;
- (*q)->ri_prev = item;
- item->ri_prev->ri_next = item;
- }
-}
-
-STATIC void
-xlog_recover_insert_item_frontq(
- xlog_recover_item_t **q,
- xlog_recover_item_t *item)
-{
- xlog_recover_insert_item_backq(q, item);
- *q = item;
-}
-
+/*
+ * Sort the log items in the transaction. Cancelled buffers need
+ * to be put first so they are processed before any items that might
+ * modify the buffers. If they are cancelled, then the modifications
+ * don't need to be replayed.
+ */
STATIC int
xlog_recover_reorder_trans(
xlog_recover_t *trans)
{
- xlog_recover_item_t *first_item, *itemq, *itemq_next;
- xfs_buf_log_format_t *buf_f;
- ushort flags = 0;
+ xlog_recover_item_t *item, *n;
+ LIST_HEAD(sort_list);
- first_item = itemq = trans->r_itemq;
- trans->r_itemq = NULL;
- do {
- itemq_next = itemq->ri_next;
- buf_f = (xfs_buf_log_format_t *)itemq->ri_buf[0].i_addr;
+ list_splice_init(&trans->r_itemq, &sort_list);
+ list_for_each_entry_safe(item, n, &sort_list, ri_list) {
+ xfs_buf_log_format_t *buf_f;
- switch (ITEM_TYPE(itemq)) {
+ buf_f = (xfs_buf_log_format_t *)item->ri_buf[0].i_addr;
+
+ switch (ITEM_TYPE(item)) {
case XFS_LI_BUF:
- flags = buf_f->blf_flags;
- if (!(flags & XFS_BLI_CANCEL)) {
- xlog_recover_insert_item_frontq(&trans->r_itemq,
- itemq);
+ if (!(buf_f->blf_flags & XFS_BLI_CANCEL)) {
+ list_move(&item->ri_list, &trans->r_itemq);
break;
}
case XFS_LI_INODE:
@@ -1601,7 +1543,7 @@ xlog_recover_reorder_trans(
case XFS_LI_QUOTAOFF:
case XFS_LI_EFD:
case XFS_LI_EFI:
- xlog_recover_insert_item_backq(&trans->r_itemq, itemq);
+ list_move_tail(&item->ri_list, &trans->r_itemq);
break;
default:
xlog_warn(
@@ -1609,8 +1551,8 @@ xlog_recover_reorder_trans(
ASSERT(0);
return XFS_ERROR(EIO);
}
- itemq = itemq_next;
- } while (first_item != itemq);
+ }
+ ASSERT(list_empty(&sort_list));
return 0;
}
@@ -2242,9 +2184,9 @@ xlog_recover_do_buffer_trans(
}
mp = log->l_mp;
- buf_flags = XFS_BUF_LOCK;
+ buf_flags = XBF_LOCK;
if (!(flags & XFS_BLI_INODE_BUF))
- buf_flags |= XFS_BUF_MAPPED;
+ buf_flags |= XBF_MAPPED;
bp = xfs_buf_read(mp->m_ddev_targp, blkno, len, buf_flags);
if (XFS_BUF_ISERROR(bp)) {
@@ -2346,7 +2288,7 @@ xlog_recover_do_inode_trans(
}
bp = xfs_buf_read(mp->m_ddev_targp, in_f->ilf_blkno, in_f->ilf_len,
- XFS_BUF_LOCK);
+ XBF_LOCK);
if (XFS_BUF_ISERROR(bp)) {
xfs_ioerror_alert("xlog_recover_do..(read#2)", mp,
bp, in_f->ilf_blkno);
@@ -2814,14 +2756,13 @@ xlog_recover_do_trans(
int pass)
{
int error = 0;
- xlog_recover_item_t *item, *first_item;
+ xlog_recover_item_t *item;
error = xlog_recover_reorder_trans(trans);
if (error)
return error;
- first_item = item = trans->r_itemq;
- do {
+ list_for_each_entry(item, &trans->r_itemq, ri_list) {
switch (ITEM_TYPE(item)) {
case XFS_LI_BUF:
error = xlog_recover_do_buffer_trans(log, item, pass);
@@ -2854,8 +2795,7 @@ xlog_recover_do_trans(
if (error)
return error;
- item = item->ri_next;
- } while (first_item != item);
+ }
return 0;
}
@@ -2869,21 +2809,18 @@ STATIC void
xlog_recover_free_trans(
xlog_recover_t *trans)
{
- xlog_recover_item_t *first_item, *item, *free_item;
+ xlog_recover_item_t *item, *n;
int i;
- item = first_item = trans->r_itemq;
- do {
- free_item = item;
- item = item->ri_next;
- /* Free the regions in the item. */
- for (i = 0; i < free_item->ri_cnt; i++) {
- kmem_free(free_item->ri_buf[i].i_addr);
- }
+ list_for_each_entry_safe(item, n, &trans->r_itemq, ri_list) {
+ /* Free the regions in the item. */
+ list_del(&item->ri_list);
+ for (i = 0; i < item->ri_cnt; i++)
+ kmem_free(item->ri_buf[i].i_addr);
/* Free the item itself */
- kmem_free(free_item->ri_buf);
- kmem_free(free_item);
- } while (first_item != item);
+ kmem_free(item->ri_buf);
+ kmem_free(item);
+ }
/* Free the transaction recover structure */
kmem_free(trans);
}
@@ -2891,14 +2828,12 @@ xlog_recover_free_trans(
STATIC int
xlog_recover_commit_trans(
xlog_t *log,
- xlog_recover_t **q,
xlog_recover_t *trans,
int pass)
{
int error;
- if ((error = xlog_recover_unlink_tid(q, trans)))
- return error;
+ hlist_del(&trans->r_list);
if ((error = xlog_recover_do_trans(log, trans, pass)))
return error;
xlog_recover_free_trans(trans); /* no error */
@@ -2926,7 +2861,7 @@ xlog_recover_unmount_trans(
STATIC int
xlog_recover_process_data(
xlog_t *log,
- xlog_recover_t *rhash[],
+ struct hlist_head rhash[],
xlog_rec_header_t *rhead,
xfs_caddr_t dp,
int pass)
@@ -2960,7 +2895,7 @@ xlog_recover_process_data(
}
tid = be32_to_cpu(ohead->oh_tid);
hash = XLOG_RHASH(tid);
- trans = xlog_recover_find_tid(rhash[hash], tid);
+ trans = xlog_recover_find_tid(&rhash[hash], tid);
if (trans == NULL) { /* not found; add new tid */
if (ohead->oh_flags & XLOG_START_TRANS)
xlog_recover_new_tid(&rhash[hash], tid,
@@ -2978,7 +2913,7 @@ xlog_recover_process_data(
switch (flags) {
case XLOG_COMMIT_TRANS:
error = xlog_recover_commit_trans(log,
- &rhash[hash], trans, pass);
+ trans, pass);
break;
case XLOG_UNMOUNT_TRANS:
error = xlog_recover_unmount_trans(trans);
@@ -3211,7 +3146,7 @@ xlog_recover_process_one_iunlink(
/*
* Get the on disk inode to find the next inode in the bucket.
*/
- error = xfs_itobp(mp, NULL, ip, &dip, &ibp, XFS_BUF_LOCK);
+ error = xfs_itobp(mp, NULL, ip, &dip, &ibp, XBF_LOCK);
if (error)
goto fail_iput;
@@ -3517,7 +3452,7 @@ xlog_do_recovery_pass(
int error = 0, h_size;
int bblks, split_bblks;
int hblks, split_hblks, wrapped_hblks;
- xlog_recover_t *rhash[XLOG_RHASH_SIZE];
+ struct hlist_head rhash[XLOG_RHASH_SIZE];
ASSERT(head_blk != tail_blk);
@@ -3978,8 +3913,7 @@ xlog_recover_finish(
* case the unlink transactions would have problems
* pushing the EFIs out of the way.
*/
- xfs_log_force(log->l_mp, (xfs_lsn_t)0,
- (XFS_LOG_FORCE | XFS_LOG_SYNC));
+ xfs_log_force(log->l_mp, XFS_LOG_SYNC);
xlog_recover_process_iunlinks(log);
diff --git a/fs/xfs/xfs_log_recover.h b/fs/xfs/xfs_log_recover.h
index b22545555301..75d749207258 100644
--- a/fs/xfs/xfs_log_recover.h
+++ b/fs/xfs/xfs_log_recover.h
@@ -35,22 +35,21 @@
* item headers are in ri_buf[0]. Additional buffers follow.
*/
typedef struct xlog_recover_item {
- struct xlog_recover_item *ri_next;
- struct xlog_recover_item *ri_prev;
- int ri_type;
- int ri_cnt; /* count of regions found */
- int ri_total; /* total regions */
- xfs_log_iovec_t *ri_buf; /* ptr to regions buffer */
+ struct list_head ri_list;
+ int ri_type;
+ int ri_cnt; /* count of regions found */
+ int ri_total; /* total regions */
+ xfs_log_iovec_t *ri_buf; /* ptr to regions buffer */
} xlog_recover_item_t;
struct xlog_tid;
typedef struct xlog_recover {
- struct xlog_recover *r_next;
- xlog_tid_t r_log_tid; /* log's transaction id */
- xfs_trans_header_t r_theader; /* trans header for partial */
- int r_state; /* not needed */
- xfs_lsn_t r_lsn; /* xact lsn */
- xlog_recover_item_t *r_itemq; /* q for items */
+ struct hlist_node r_list;
+ xlog_tid_t r_log_tid; /* log's transaction id */
+ xfs_trans_header_t r_theader; /* trans header for partial */
+ int r_state; /* not needed */
+ xfs_lsn_t r_lsn; /* xact lsn */
+ struct list_head r_itemq; /* q for items */
} xlog_recover_t;
#define ITEM_TYPE(i) (*(ushort *)(i)->ri_buf[0].i_addr)
diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index eb403b40e120..6afaaeb2950a 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -201,6 +201,38 @@ xfs_uuid_unmount(
/*
+ * Reference counting access wrappers to the perag structures.
+ */
+struct xfs_perag *
+xfs_perag_get(struct xfs_mount *mp, xfs_agnumber_t agno)
+{
+ struct xfs_perag *pag;
+ int ref = 0;
+
+ spin_lock(&mp->m_perag_lock);
+ pag = radix_tree_lookup(&mp->m_perag_tree, agno);
+ if (pag) {
+ ASSERT(atomic_read(&pag->pag_ref) >= 0);
+ /* catch leaks in the positive direction during testing */
+ ASSERT(atomic_read(&pag->pag_ref) < 1000);
+ ref = atomic_inc_return(&pag->pag_ref);
+ }
+ spin_unlock(&mp->m_perag_lock);
+ trace_xfs_perag_get(mp, agno, ref, _RET_IP_);
+ return pag;
+}
+
+void
+xfs_perag_put(struct xfs_perag *pag)
+{
+ int ref;
+
+ ASSERT(atomic_read(&pag->pag_ref) > 0);
+ ref = atomic_dec_return(&pag->pag_ref);
+ trace_xfs_perag_put(pag->pag_mount, pag->pag_agno, ref, _RET_IP_);
+}
+
+/*
* Free up the resources associated with a mount structure. Assume that
* the structure was initially zeroed, so we can tell which fields got
* initialized.
@@ -209,13 +241,16 @@ STATIC void
xfs_free_perag(
xfs_mount_t *mp)
{
- if (mp->m_perag) {
- int agno;
+ xfs_agnumber_t agno;
+ struct xfs_perag *pag;
- for (agno = 0; agno < mp->m_maxagi; agno++)
- if (mp->m_perag[agno].pagb_list)
- kmem_free(mp->m_perag[agno].pagb_list);
- kmem_free(mp->m_perag);
+ for (agno = 0; agno < mp->m_sb.sb_agcount; agno++) {
+ spin_lock(&mp->m_perag_lock);
+ pag = radix_tree_delete(&mp->m_perag_tree, agno);
+ ASSERT(pag);
+ ASSERT(atomic_read(&pag->pag_ref) == 0);
+ spin_unlock(&mp->m_perag_lock);
+ kmem_free(pag);
}
}
@@ -389,22 +424,57 @@ xfs_initialize_perag_icache(
}
}
-xfs_agnumber_t
+int
xfs_initialize_perag(
xfs_mount_t *mp,
- xfs_agnumber_t agcount)
+ xfs_agnumber_t agcount,
+ xfs_agnumber_t *maxagi)
{
xfs_agnumber_t index, max_metadata;
+ xfs_agnumber_t first_initialised = 0;
xfs_perag_t *pag;
xfs_agino_t agino;
xfs_ino_t ino;
xfs_sb_t *sbp = &mp->m_sb;
xfs_ino_t max_inum = XFS_MAXINUMBER_32;
+ int error = -ENOMEM;
/* Check to see if the filesystem can overflow 32 bit inodes */
agino = XFS_OFFBNO_TO_AGINO(mp, sbp->sb_agblocks - 1, 0);
ino = XFS_AGINO_TO_INO(mp, agcount - 1, agino);
+ /*
+ * Walk the current per-ag tree so we don't try to initialise AGs
+ * that already exist (growfs case). Allocate and insert all the
+ * AGs we don't find ready for initialisation.
+ */
+ for (index = 0; index < agcount; index++) {
+ pag = xfs_perag_get(mp, index);
+ if (pag) {
+ xfs_perag_put(pag);
+ continue;
+ }
+ if (!first_initialised)
+ first_initialised = index;
+ pag = kmem_zalloc(sizeof(*pag), KM_MAYFAIL);
+ if (!pag)
+ goto out_unwind;
+ if (radix_tree_preload(GFP_NOFS))
+ goto out_unwind;
+ spin_lock(&mp->m_perag_lock);
+ if (radix_tree_insert(&mp->m_perag_tree, index, pag)) {
+ BUG();
+ spin_unlock(&mp->m_perag_lock);
+ radix_tree_preload_end();
+ error = -EEXIST;
+ goto out_unwind;
+ }
+ pag->pag_agno = index;
+ pag->pag_mount = mp;
+ spin_unlock(&mp->m_perag_lock);
+ radix_tree_preload_end();
+ }
+
/* Clear the mount flag if no inode can overflow 32 bits
* on this filesystem, or if specifically requested..
*/
@@ -438,21 +508,33 @@ xfs_initialize_perag(
}
/* This ag is preferred for inodes */
- pag = &mp->m_perag[index];
+ pag = xfs_perag_get(mp, index);
pag->pagi_inodeok = 1;
if (index < max_metadata)
pag->pagf_metadata = 1;
xfs_initialize_perag_icache(pag);
+ xfs_perag_put(pag);
}
} else {
/* Setup default behavior for smaller filesystems */
for (index = 0; index < agcount; index++) {
- pag = &mp->m_perag[index];
+ pag = xfs_perag_get(mp, index);
pag->pagi_inodeok = 1;
xfs_initialize_perag_icache(pag);
+ xfs_perag_put(pag);
}
}
- return index;
+ if (maxagi)
+ *maxagi = index;
+ return 0;
+
+out_unwind:
+ kmem_free(pag);
+ for (; index > first_initialised; index--) {
+ pag = radix_tree_delete(&mp->m_perag_tree, index);
+ kmem_free(pag);
+ }
+ return error;
}
void
@@ -583,7 +665,7 @@ xfs_readsb(xfs_mount_t *mp, int flags)
* access to the superblock.
*/
sector_size = xfs_getsize_buftarg(mp->m_ddev_targp);
- extra_flags = XFS_BUF_LOCK | XFS_BUF_MANAGE | XFS_BUF_MAPPED;
+ extra_flags = XBF_LOCK | XBF_FS_MANAGED | XBF_MAPPED;
bp = xfs_buf_read(mp->m_ddev_targp, XFS_SB_DADDR, BTOBB(sector_size),
extra_flags);
@@ -731,12 +813,13 @@ xfs_initialize_perag_data(xfs_mount_t *mp, xfs_agnumber_t agcount)
error = xfs_ialloc_pagi_init(mp, NULL, index);
if (error)
return error;
- pag = &mp->m_perag[index];
+ pag = xfs_perag_get(mp, index);
ifree += pag->pagi_freecount;
ialloc += pag->pagi_count;
bfree += pag->pagf_freeblks;
bfreelst += pag->pagf_flcount;
btree += pag->pagf_btreeblks;
+ xfs_perag_put(pag);
}
/*
* Overwrite incore superblock counters with just-read data
@@ -1008,6 +1091,22 @@ xfs_mount_reset_sbqflags(
return xfs_trans_commit(tp, 0);
}
+__uint64_t
+xfs_default_resblks(xfs_mount_t *mp)
+{
+ __uint64_t resblks;
+
+ /*
+ * We default to 5% or 1024 fsbs of space reserved, whichever is smaller.
+ * This may drive us straight to ENOSPC on mount, but that implies
+ * we were already there on the last unmount. Warn if this occurs.
+ */
+ resblks = mp->m_sb.sb_dblocks;
+ do_div(resblks, 20);
+ resblks = min_t(__uint64_t, resblks, 1024);
+ return resblks;
+}
+
/*
* This function does the following on an initial mount of a file system:
* - reads the superblock from disk and init the mount struct
@@ -1152,13 +1251,13 @@ xfs_mountfs(
/*
* Allocate and initialize the per-ag data.
*/
- init_rwsem(&mp->m_peraglock);
- mp->m_perag = kmem_zalloc(sbp->sb_agcount * sizeof(xfs_perag_t),
- KM_MAYFAIL);
- if (!mp->m_perag)
+ spin_lock_init(&mp->m_perag_lock);
+ INIT_RADIX_TREE(&mp->m_perag_tree, GFP_NOFS);
+ error = xfs_initialize_perag(mp, sbp->sb_agcount, &mp->m_maxagi);
+ if (error) {
+ cmn_err(CE_WARN, "XFS: Failed per-ag init: %d", error);
goto out_remove_uuid;
-
- mp->m_maxagi = xfs_initialize_perag(mp, sbp->sb_agcount);
+ }
if (!sbp->sb_logblocks) {
cmn_err(CE_WARN, "XFS: no log defined");
@@ -1318,18 +1417,14 @@ xfs_mountfs(
* when at ENOSPC. This is needed for operations like create with
* attr, unwritten extent conversion at ENOSPC, etc. Data allocations
* are not allowed to use this reserved space.
- *
- * We default to 5% or 1024 fsbs of space reserved, whichever is smaller.
- * This may drive us straight to ENOSPC on mount, but that implies
- * we were already there on the last unmount. Warn if this occurs.
*/
- resblks = mp->m_sb.sb_dblocks;
- do_div(resblks, 20);
- resblks = min_t(__uint64_t, resblks, 1024);
- error = xfs_reserve_blocks(mp, &resblks, NULL);
- if (error)
- cmn_err(CE_WARN, "XFS: Unable to allocate reserve blocks. "
- "Continuing without a reserve pool.");
+ if (!(mp->m_flags & XFS_MOUNT_RDONLY)) {
+ resblks = xfs_default_resblks(mp);
+ error = xfs_reserve_blocks(mp, &resblks, NULL);
+ if (error)
+ cmn_err(CE_WARN, "XFS: Unable to allocate reserve "
+ "blocks. Continuing without a reserve pool.");
+ }
return 0;
@@ -1372,8 +1467,19 @@ xfs_unmountfs(
* push out the iclog we will never get that unlocked. hence we
* need to force the log first.
*/
- xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE | XFS_LOG_SYNC);
- xfs_reclaim_inodes(mp, XFS_IFLUSH_ASYNC);
+ xfs_log_force(mp, XFS_LOG_SYNC);
+
+ /*
+ * Do a delwri reclaim pass first so that as many dirty inodes are
+ * queued up for IO as possible. Then flush the buffers before making
+ * a synchronous path to catch all the remaining inodes are reclaimed.
+ * This makes the reclaim process as quick as possible by avoiding
+ * synchronous writeout and blocking on inodes already in the delwri
+ * state as much as possible.
+ */
+ xfs_reclaim_inodes(mp, 0);
+ XFS_bflush(mp->m_ddev_targp);
+ xfs_reclaim_inodes(mp, SYNC_WAIT);
xfs_qm_unmount(mp);
@@ -1382,7 +1488,7 @@ xfs_unmountfs(
* that nothing is pinned. This is important because bflush()
* will skip pinned buffers.
*/
- xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE | XFS_LOG_SYNC);
+ xfs_log_force(mp, XFS_LOG_SYNC);
xfs_binval(mp->m_ddev_targp);
if (mp->m_rtdev_targp) {
@@ -1548,15 +1654,14 @@ xfs_mod_sb(xfs_trans_t *tp, __int64_t fields)
xfs_sb_to_disk(XFS_BUF_TO_SBP(bp), &mp->m_sb, fields);
/* find modified range */
+ f = (xfs_sb_field_t)xfs_highbit64((__uint64_t)fields);
+ ASSERT((1LL << f) & XFS_SB_MOD_BITS);
+ last = xfs_sb_info[f + 1].offset - 1;
f = (xfs_sb_field_t)xfs_lowbit64((__uint64_t)fields);
ASSERT((1LL << f) & XFS_SB_MOD_BITS);
first = xfs_sb_info[f].offset;
- f = (xfs_sb_field_t)xfs_highbit64((__uint64_t)fields);
- ASSERT((1LL << f) & XFS_SB_MOD_BITS);
- last = xfs_sb_info[f + 1].offset - 1;
-
xfs_trans_log_buf(tp, bp, first, last);
}
@@ -1887,7 +1992,7 @@ xfs_getsb(
ASSERT(mp->m_sb_bp != NULL);
bp = mp->m_sb_bp;
- if (flags & XFS_BUF_TRYLOCK) {
+ if (flags & XBF_TRYLOCK) {
if (!XFS_BUF_CPSEMA(bp)) {
return NULL;
}
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index 1df7e4502967..14dafd608230 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -78,7 +78,8 @@ typedef int (*xfs_send_destroy_t)(struct xfs_inode *, dm_right_t);
typedef int (*xfs_send_namesp_t)(dm_eventtype_t, struct xfs_mount *,
struct xfs_inode *, dm_right_t,
struct xfs_inode *, dm_right_t,
- const char *, const char *, mode_t, int, int);
+ const unsigned char *, const unsigned char *,
+ mode_t, int, int);
typedef int (*xfs_send_mount_t)(struct xfs_mount *, dm_right_t,
char *, char *);
typedef void (*xfs_send_unmount_t)(struct xfs_mount *, struct xfs_inode *,
@@ -207,8 +208,8 @@ typedef struct xfs_mount {
uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */
uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */
uint m_in_maxlevels; /* max inobt btree levels. */
- struct xfs_perag *m_perag; /* per-ag accounting info */
- struct rw_semaphore m_peraglock; /* lock for m_perag (pointer) */
+ struct radix_tree_root m_perag_tree; /* per-ag accounting info */
+ spinlock_t m_perag_lock; /* lock for m_perag_tree */
struct mutex m_growlock; /* growfs mutex */
int m_fixedfsid[2]; /* unchanged for life of FS */
uint m_dmevmask; /* DMI events for this FS */
@@ -224,6 +225,7 @@ typedef struct xfs_mount {
__uint64_t m_maxioffset; /* maximum inode offset */
__uint64_t m_resblks; /* total reserved blocks */
__uint64_t m_resblks_avail;/* available reserved blocks */
+ __uint64_t m_resblks_save; /* reserved blks @ remount,ro */
int m_dalign; /* stripe unit */
int m_swidth; /* stripe width */
int m_sinoalign; /* stripe unit inode alignment */
@@ -243,7 +245,7 @@ typedef struct xfs_mount {
struct xfs_qmops *m_qm_ops; /* vector of XQM ops */
atomic_t m_active_trans; /* number trans frozen */
#ifdef HAVE_PERCPU_SB
- xfs_icsb_cnts_t *m_sb_cnts; /* per-cpu superblock counters */
+ xfs_icsb_cnts_t __percpu *m_sb_cnts; /* per-cpu superblock counters */
unsigned long m_icsb_counters; /* disabled per-cpu counters */
struct notifier_block m_icsb_notifier; /* hotplug cpu notifier */
struct mutex m_icsb_mutex; /* balancer sync lock */
@@ -384,19 +386,10 @@ xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d)
}
/*
- * perag get/put wrappers for eventual ref counting
+ * perag get/put wrappers for ref counting
*/
-static inline xfs_perag_t *
-xfs_get_perag(struct xfs_mount *mp, xfs_ino_t ino)
-{
- return &mp->m_perag[XFS_INO_TO_AGNO(mp, ino)];
-}
-
-static inline void
-xfs_put_perag(struct xfs_mount *mp, xfs_perag_t *pag)
-{
- /* nothing to see here, move along */
-}
+struct xfs_perag *xfs_perag_get(struct xfs_mount *mp, xfs_agnumber_t agno);
+void xfs_perag_put(struct xfs_perag *pag);
/*
* Per-cpu superblock locking functions
@@ -428,6 +421,7 @@ typedef struct xfs_mod_sb {
} xfs_mod_sb_t;
extern int xfs_log_sbcount(xfs_mount_t *, uint);
+extern __uint64_t xfs_default_resblks(xfs_mount_t *mp);
extern int xfs_mountfs(xfs_mount_t *mp);
extern void xfs_unmountfs(xfs_mount_t *);
@@ -450,7 +444,8 @@ extern struct xfs_dmops xfs_dmcore_xfs;
#endif /* __KERNEL__ */
extern void xfs_mod_sb(struct xfs_trans *, __int64_t);
-extern xfs_agnumber_t xfs_initialize_perag(struct xfs_mount *, xfs_agnumber_t);
+extern int xfs_initialize_perag(struct xfs_mount *, xfs_agnumber_t,
+ xfs_agnumber_t *);
extern void xfs_sb_from_disk(struct xfs_sb *, struct xfs_dsb *);
extern void xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t);
diff --git a/fs/xfs/xfs_mru_cache.c b/fs/xfs/xfs_mru_cache.c
index 4b0613d99faa..45ce15dc5b2b 100644
--- a/fs/xfs/xfs_mru_cache.c
+++ b/fs/xfs/xfs_mru_cache.c
@@ -398,7 +398,7 @@ exit:
* guaranteed that all the free functions for all the elements have finished
* executing and the reaper is not running.
*/
-void
+static void
xfs_mru_cache_flush(
xfs_mru_cache_t *mru)
{
diff --git a/fs/xfs/xfs_mru_cache.h b/fs/xfs/xfs_mru_cache.h
index 5d439f34b0c9..36dd3ec8b4eb 100644
--- a/fs/xfs/xfs_mru_cache.h
+++ b/fs/xfs/xfs_mru_cache.h
@@ -42,7 +42,6 @@ void xfs_mru_cache_uninit(void);
int xfs_mru_cache_create(struct xfs_mru_cache **mrup, unsigned int lifetime_ms,
unsigned int grp_count,
xfs_mru_cache_free_func_t free_func);
-void xfs_mru_cache_flush(xfs_mru_cache_t *mru);
void xfs_mru_cache_destroy(struct xfs_mru_cache *mru);
int xfs_mru_cache_insert(struct xfs_mru_cache *mru, unsigned long key,
void *value);
diff --git a/fs/xfs/xfs_quota.h b/fs/xfs/xfs_quota.h
index 91bfd60f4c74..fdcab3f81dde 100644
--- a/fs/xfs/xfs_quota.h
+++ b/fs/xfs/xfs_quota.h
@@ -223,16 +223,9 @@ typedef struct xfs_qoff_logformat {
#define XFS_QMOPT_RES_INOS 0x0800000
/*
- * flags for dqflush and dqflush_all.
- */
-#define XFS_QMOPT_SYNC 0x1000000
-#define XFS_QMOPT_ASYNC 0x2000000
-#define XFS_QMOPT_DELWRI 0x4000000
-
-/*
* flags for dqalloc.
*/
-#define XFS_QMOPT_INHERIT 0x8000000
+#define XFS_QMOPT_INHERIT 0x1000000
/*
* flags to xfs_trans_mod_dquot.
diff --git a/fs/xfs/xfs_rw.c b/fs/xfs/xfs_rw.c
index 5aa07caea5f1..e336742a58a4 100644
--- a/fs/xfs/xfs_rw.c
+++ b/fs/xfs/xfs_rw.c
@@ -47,48 +47,6 @@
#include "xfs_trace.h"
/*
- * This is a subroutine for xfs_write() and other writers (xfs_ioctl)
- * which clears the setuid and setgid bits when a file is written.
- */
-int
-xfs_write_clear_setuid(
- xfs_inode_t *ip)
-{
- xfs_mount_t *mp;
- xfs_trans_t *tp;
- int error;
-
- mp = ip->i_mount;
- tp = xfs_trans_alloc(mp, XFS_TRANS_WRITEID);
- if ((error = xfs_trans_reserve(tp, 0,
- XFS_WRITEID_LOG_RES(mp),
- 0, 0, 0))) {
- xfs_trans_cancel(tp, 0);
- return error;
- }
- xfs_ilock(ip, XFS_ILOCK_EXCL);
- xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
- xfs_trans_ihold(tp, ip);
- ip->i_d.di_mode &= ~S_ISUID;
-
- /*
- * Note that we don't have to worry about mandatory
- * file locking being disabled here because we only
- * clear the S_ISGID bit if the Group execute bit is
- * on, but if it was on then mandatory locking wouldn't
- * have been enabled.
- */
- if (ip->i_d.di_mode & S_IXGRP) {
- ip->i_d.di_mode &= ~S_ISGID;
- }
- xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
- xfs_trans_set_sync(tp);
- error = xfs_trans_commit(tp, 0);
- xfs_iunlock(ip, XFS_ILOCK_EXCL);
- return 0;
-}
-
-/*
* Force a shutdown of the filesystem instantly while keeping
* the filesystem consistent. We don't do an unmount here; just shutdown
* the shop, make sure that absolutely nothing persistent happens to
@@ -153,88 +111,6 @@ xfs_do_force_shutdown(
}
}
-
-/*
- * Called when we want to stop a buffer from getting written or read.
- * We attach the EIO error, muck with its flags, and call biodone
- * so that the proper iodone callbacks get called.
- */
-int
-xfs_bioerror(
- xfs_buf_t *bp)
-{
-
-#ifdef XFSERRORDEBUG
- ASSERT(XFS_BUF_ISREAD(bp) || bp->b_iodone);
-#endif
-
- /*
- * No need to wait until the buffer is unpinned.
- * We aren't flushing it.
- */
- XFS_BUF_ERROR(bp, EIO);
- /*
- * We're calling biodone, so delete B_DONE flag. Either way
- * we have to call the iodone callback, and calling biodone
- * probably is the best way since it takes care of
- * GRIO as well.
- */
- XFS_BUF_UNREAD(bp);
- XFS_BUF_UNDELAYWRITE(bp);
- XFS_BUF_UNDONE(bp);
- XFS_BUF_STALE(bp);
-
- XFS_BUF_CLR_BDSTRAT_FUNC(bp);
- xfs_biodone(bp);
-
- return (EIO);
-}
-
-/*
- * Same as xfs_bioerror, except that we are releasing the buffer
- * here ourselves, and avoiding the biodone call.
- * This is meant for userdata errors; metadata bufs come with
- * iodone functions attached, so that we can track down errors.
- */
-int
-xfs_bioerror_relse(
- xfs_buf_t *bp)
-{
- int64_t fl;
-
- ASSERT(XFS_BUF_IODONE_FUNC(bp) != xfs_buf_iodone_callbacks);
- ASSERT(XFS_BUF_IODONE_FUNC(bp) != xlog_iodone);
-
- fl = XFS_BUF_BFLAGS(bp);
- /*
- * No need to wait until the buffer is unpinned.
- * We aren't flushing it.
- *
- * chunkhold expects B_DONE to be set, whether
- * we actually finish the I/O or not. We don't want to
- * change that interface.
- */
- XFS_BUF_UNREAD(bp);
- XFS_BUF_UNDELAYWRITE(bp);
- XFS_BUF_DONE(bp);
- XFS_BUF_STALE(bp);
- XFS_BUF_CLR_IODONE_FUNC(bp);
- XFS_BUF_CLR_BDSTRAT_FUNC(bp);
- if (!(fl & XFS_B_ASYNC)) {
- /*
- * Mark b_error and B_ERROR _both_.
- * Lot's of chunkcache code assumes that.
- * There's no reason to mark error for
- * ASYNC buffers.
- */
- XFS_BUF_ERROR(bp, EIO);
- XFS_BUF_FINISH_IOWAIT(bp);
- } else {
- xfs_buf_relse(bp);
- }
- return (EIO);
-}
-
/*
* Prints out an ALERT message about I/O error.
*/
@@ -306,37 +182,6 @@ xfs_read_buf(
}
/*
- * Wrapper around bwrite() so that we can trap
- * write errors, and act accordingly.
- */
-int
-xfs_bwrite(
- struct xfs_mount *mp,
- struct xfs_buf *bp)
-{
- int error;
-
- /*
- * XXXsup how does this work for quotas.
- */
- XFS_BUF_SET_BDSTRAT_FUNC(bp, xfs_bdstrat_cb);
- bp->b_mount = mp;
- XFS_BUF_WRITE(bp);
-
- if ((error = XFS_bwrite(bp))) {
- ASSERT(mp);
- /*
- * Cannot put a buftrace here since if the buffer is not
- * B_HOLD then we will brelse() the buffer before returning
- * from bwrite and we could be tracing a buffer that has
- * been reused.
- */
- xfs_force_shutdown(mp, SHUTDOWN_META_IO_ERROR);
- }
- return (error);
-}
-
-/*
* helper function to extract extent size hint from inode
*/
xfs_extlen_t
diff --git a/fs/xfs/xfs_rw.h b/fs/xfs/xfs_rw.h
index 571f2174435c..11c41ec6ed75 100644
--- a/fs/xfs/xfs_rw.h
+++ b/fs/xfs/xfs_rw.h
@@ -39,10 +39,6 @@ xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb)
/*
* Prototypes for functions in xfs_rw.c.
*/
-extern int xfs_write_clear_setuid(struct xfs_inode *ip);
-extern int xfs_bwrite(struct xfs_mount *mp, struct xfs_buf *bp);
-extern int xfs_bioerror(struct xfs_buf *bp);
-extern int xfs_bioerror_relse(struct xfs_buf *bp);
extern int xfs_read_buf(struct xfs_mount *mp, xfs_buftarg_t *btp,
xfs_daddr_t blkno, int len, uint flags,
struct xfs_buf **bpp);
diff --git a/fs/xfs/xfs_trans.c b/fs/xfs/xfs_trans.c
index 237badcbac3b..be942d4e3324 100644
--- a/fs/xfs/xfs_trans.c
+++ b/fs/xfs/xfs_trans.c
@@ -981,9 +981,8 @@ shut_us_down:
*/
if (sync) {
if (!error) {
- error = _xfs_log_force(mp, commit_lsn,
- XFS_LOG_FORCE | XFS_LOG_SYNC,
- log_flushed);
+ error = _xfs_log_force_lsn(mp, commit_lsn,
+ XFS_LOG_SYNC, log_flushed);
}
XFS_STATS_INC(xs_trans_sync);
} else {
@@ -1121,7 +1120,7 @@ xfs_trans_fill_vecs(
tp->t_header.th_num_items = nitems;
log_vector->i_addr = (xfs_caddr_t)&tp->t_header;
log_vector->i_len = sizeof(xfs_trans_header_t);
- XLOG_VEC_SET_TYPE(log_vector, XLOG_REG_TYPE_TRANSHDR);
+ log_vector->i_type = XLOG_REG_TYPE_TRANSHDR;
}
diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h
index ca64f33c63a3..c93e3a102857 100644
--- a/fs/xfs/xfs_trans.h
+++ b/fs/xfs/xfs_trans.h
@@ -861,8 +861,7 @@ typedef struct xfs_item_ops {
#define XFS_ITEM_SUCCESS 0
#define XFS_ITEM_PINNED 1
#define XFS_ITEM_LOCKED 2
-#define XFS_ITEM_FLUSHING 3
-#define XFS_ITEM_PUSHBUF 4
+#define XFS_ITEM_PUSHBUF 3
/*
* This structure is used to maintain a list of block ranges that have been
diff --git a/fs/xfs/xfs_trans_ail.c b/fs/xfs/xfs_trans_ail.c
index 2ffc570679be..e799824f7245 100644
--- a/fs/xfs/xfs_trans_ail.c
+++ b/fs/xfs/xfs_trans_ail.c
@@ -237,14 +237,15 @@ out:
}
/*
- * Function that does the work of pushing on the AIL
+ * xfsaild_push does the work of pushing on the AIL. Returning a timeout of
+ * zero indicates that the caller should sleep until woken.
*/
long
xfsaild_push(
struct xfs_ail *ailp,
xfs_lsn_t *last_lsn)
{
- long tout = 1000; /* milliseconds */
+ long tout = 0;
xfs_lsn_t last_pushed_lsn = *last_lsn;
xfs_lsn_t target = ailp->xa_target;
xfs_lsn_t lsn;
@@ -252,6 +253,7 @@ xfsaild_push(
int flush_log, count, stuck;
xfs_mount_t *mp = ailp->xa_mount;
struct xfs_ail_cursor *cur = &ailp->xa_cursors;
+ int push_xfsbufd = 0;
spin_lock(&ailp->xa_lock);
xfs_trans_ail_cursor_init(ailp, cur);
@@ -262,7 +264,7 @@ xfsaild_push(
*/
xfs_trans_ail_cursor_done(ailp, cur);
spin_unlock(&ailp->xa_lock);
- last_pushed_lsn = 0;
+ *last_lsn = 0;
return tout;
}
@@ -279,7 +281,6 @@ xfsaild_push(
* prevents use from spinning when we can't do anything or there is
* lots of contention on the AIL lists.
*/
- tout = 10;
lsn = lip->li_lsn;
flush_log = stuck = count = 0;
while ((XFS_LSN_CMP(lip->li_lsn, target) < 0)) {
@@ -308,6 +309,7 @@ xfsaild_push(
XFS_STATS_INC(xs_push_ail_pushbuf);
IOP_PUSHBUF(lip);
last_pushed_lsn = lsn;
+ push_xfsbufd = 1;
break;
case XFS_ITEM_PINNED:
@@ -322,12 +324,6 @@ xfsaild_push(
stuck++;
break;
- case XFS_ITEM_FLUSHING:
- XFS_STATS_INC(xs_push_ail_flushing);
- last_pushed_lsn = lsn;
- stuck++;
- break;
-
default:
ASSERT(0);
break;
@@ -371,19 +367,24 @@ xfsaild_push(
* move forward in the AIL.
*/
XFS_STATS_INC(xs_push_ail_flush);
- xfs_log_force(mp, (xfs_lsn_t)0, XFS_LOG_FORCE);
+ xfs_log_force(mp, 0);
+ }
+
+ if (push_xfsbufd) {
+ /* we've got delayed write buffers to flush */
+ wake_up_process(mp->m_ddev_targp->bt_task);
}
if (!count) {
/* We're past our target or empty, so idle */
- tout = 1000;
+ last_pushed_lsn = 0;
} else if (XFS_LSN_CMP(lsn, target) >= 0) {
/*
* We reached the target so wait a bit longer for I/O to
* complete and remove pushed items from the AIL before we
* start the next scan from the start of the AIL.
*/
- tout += 20;
+ tout = 50;
last_pushed_lsn = 0;
} else if ((stuck * 100) / count > 90) {
/*
@@ -395,11 +396,14 @@ xfsaild_push(
* Backoff a bit more to allow some I/O to complete before
* continuing from where we were.
*/
- tout += 10;
+ tout = 20;
+ } else {
+ /* more to do, but wait a short while before continuing */
+ tout = 10;
}
*last_lsn = last_pushed_lsn;
return tout;
-} /* xfsaild_push */
+}
/*
diff --git a/fs/xfs/xfs_trans_buf.c b/fs/xfs/xfs_trans_buf.c
index 49130628d5ef..5ffd544434eb 100644
--- a/fs/xfs/xfs_trans_buf.c
+++ b/fs/xfs/xfs_trans_buf.c
@@ -75,13 +75,14 @@ xfs_trans_get_buf(xfs_trans_t *tp,
xfs_buf_log_item_t *bip;
if (flags == 0)
- flags = XFS_BUF_LOCK | XFS_BUF_MAPPED;
+ flags = XBF_LOCK | XBF_MAPPED;
/*
* Default to a normal get_buf() call if the tp is NULL.
*/
if (tp == NULL)
- return xfs_buf_get(target_dev, blkno, len, flags | BUF_BUSY);
+ return xfs_buf_get(target_dev, blkno, len,
+ flags | XBF_DONT_BLOCK);
/*
* If we find the buffer in the cache with this transaction
@@ -117,14 +118,14 @@ xfs_trans_get_buf(xfs_trans_t *tp,
}
/*
- * We always specify the BUF_BUSY flag within a transaction so
- * that get_buf does not try to push out a delayed write buffer
+ * We always specify the XBF_DONT_BLOCK flag within a transaction
+ * so that get_buf does not try to push out a delayed write buffer
* which might cause another transaction to take place (if the
* buffer was delayed alloc). Such recursive transactions can
* easily deadlock with our current transaction as well as cause
* us to run out of stack space.
*/
- bp = xfs_buf_get(target_dev, blkno, len, flags | BUF_BUSY);
+ bp = xfs_buf_get(target_dev, blkno, len, flags | XBF_DONT_BLOCK);
if (bp == NULL) {
return NULL;
}
@@ -290,15 +291,15 @@ xfs_trans_read_buf(
int error;
if (flags == 0)
- flags = XFS_BUF_LOCK | XFS_BUF_MAPPED;
+ flags = XBF_LOCK | XBF_MAPPED;
/*
* Default to a normal get_buf() call if the tp is NULL.
*/
if (tp == NULL) {
- bp = xfs_buf_read(target, blkno, len, flags | BUF_BUSY);
+ bp = xfs_buf_read(target, blkno, len, flags | XBF_DONT_BLOCK);
if (!bp)
- return (flags & XFS_BUF_TRYLOCK) ?
+ return (flags & XBF_TRYLOCK) ?
EAGAIN : XFS_ERROR(ENOMEM);
if (XFS_BUF_GETERROR(bp) != 0) {
@@ -385,14 +386,14 @@ xfs_trans_read_buf(
}
/*
- * We always specify the BUF_BUSY flag within a transaction so
- * that get_buf does not try to push out a delayed write buffer
+ * We always specify the XBF_DONT_BLOCK flag within a transaction
+ * so that get_buf does not try to push out a delayed write buffer
* which might cause another transaction to take place (if the
* buffer was delayed alloc). Such recursive transactions can
* easily deadlock with our current transaction as well as cause
* us to run out of stack space.
*/
- bp = xfs_buf_read(target, blkno, len, flags | BUF_BUSY);
+ bp = xfs_buf_read(target, blkno, len, flags | XBF_DONT_BLOCK);
if (bp == NULL) {
*bpp = NULL;
return 0;
@@ -472,8 +473,8 @@ shutdown_abort:
if (XFS_BUF_ISSTALE(bp) && XFS_BUF_ISDELAYWRITE(bp))
cmn_err(CE_NOTE, "about to pop assert, bp == 0x%p", bp);
#endif
- ASSERT((XFS_BUF_BFLAGS(bp) & (XFS_B_STALE|XFS_B_DELWRI)) !=
- (XFS_B_STALE|XFS_B_DELWRI));
+ ASSERT((XFS_BUF_BFLAGS(bp) & (XBF_STALE|XBF_DELWRI)) !=
+ (XBF_STALE|XBF_DELWRI));
trace_xfs_trans_read_buf_shut(bp, _RET_IP_);
xfs_buf_relse(bp);
diff --git a/fs/xfs/xfs_types.h b/fs/xfs/xfs_types.h
index d725428c9df6..b09904555d07 100644
--- a/fs/xfs/xfs_types.h
+++ b/fs/xfs/xfs_types.h
@@ -151,8 +151,8 @@ typedef enum {
} xfs_btnum_t;
struct xfs_name {
- const char *name;
- int len;
+ const unsigned char *name;
+ int len;
};
#endif /* __XFS_TYPES_H__ */
diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
index 6f268756bf36..ddd2c5d1b854 100644
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -256,7 +256,7 @@ xfs_setattr(
iattr->ia_size > ip->i_d.di_size) {
code = xfs_flush_pages(ip,
ip->i_d.di_size, iattr->ia_size,
- XFS_B_ASYNC, FI_NONE);
+ XBF_ASYNC, FI_NONE);
}
/* wait for all I/O to complete */
@@ -597,7 +597,7 @@ xfs_fsync(
{
xfs_trans_t *tp;
int error = 0;
- int log_flushed = 0, changed = 1;
+ int log_flushed = 0;
xfs_itrace_entry(ip);
@@ -627,19 +627,16 @@ xfs_fsync(
* disk yet, the inode will be still be pinned. If it is,
* force the log.
*/
-
xfs_iunlock(ip, XFS_ILOCK_SHARED);
-
if (xfs_ipincount(ip)) {
- error = _xfs_log_force(ip->i_mount, (xfs_lsn_t)0,
- XFS_LOG_FORCE | XFS_LOG_SYNC,
- &log_flushed);
- } else {
- /*
- * If the inode is not pinned and nothing has changed
- * we don't need to flush the cache.
- */
- changed = 0;
+ if (ip->i_itemp->ili_last_lsn) {
+ error = _xfs_log_force_lsn(ip->i_mount,
+ ip->i_itemp->ili_last_lsn,
+ XFS_LOG_SYNC, &log_flushed);
+ } else {
+ error = _xfs_log_force(ip->i_mount,
+ XFS_LOG_SYNC, &log_flushed);
+ }
}
} else {
/*
@@ -674,7 +671,7 @@ xfs_fsync(
xfs_iunlock(ip, XFS_ILOCK_EXCL);
}
- if ((ip->i_mount->m_flags & XFS_MOUNT_BARRIER) && changed) {
+ if (ip->i_mount->m_flags & XFS_MOUNT_BARRIER) {
/*
* If the log write didn't issue an ordered tag we need
* to flush the disk cache for the data device now.
@@ -1096,7 +1093,7 @@ xfs_release(
*/
truncated = xfs_iflags_test_and_clear(ip, XFS_ITRUNCATED);
if (truncated && VN_DIRTY(VFS_I(ip)) && ip->i_delayed_blks > 0)
- xfs_flush_pages(ip, 0, -1, XFS_B_ASYNC, FI_NONE);
+ xfs_flush_pages(ip, 0, -1, XBF_ASYNC, FI_NONE);
}
if (ip->i_d.di_nlink != 0) {
@@ -2199,7 +2196,8 @@ xfs_symlink(
if (DM_EVENT_ENABLED(dp, DM_EVENT_SYMLINK)) {
error = XFS_SEND_NAMESP(mp, DM_EVENT_SYMLINK, dp,
DM_RIGHT_NULL, NULL, DM_RIGHT_NULL,
- link_name->name, target_path, 0, 0, 0);
+ link_name->name,
+ (unsigned char *)target_path, 0, 0, 0);
if (error)
return error;
}
@@ -2395,7 +2393,8 @@ std_return:
dp, DM_RIGHT_NULL,
error ? NULL : ip,
DM_RIGHT_NULL, link_name->name,
- target_path, 0, error, 0);
+ (unsigned char *)target_path,
+ 0, error, 0);
}
if (!error)
diff --git a/fs/xfs/xfs_vnodeops.h b/fs/xfs/xfs_vnodeops.h
index 167a467403a5..774f40729ca1 100644
--- a/fs/xfs/xfs_vnodeops.h
+++ b/fs/xfs/xfs_vnodeops.h
@@ -43,11 +43,11 @@ int xfs_change_file_space(struct xfs_inode *ip, int cmd,
int xfs_rename(struct xfs_inode *src_dp, struct xfs_name *src_name,
struct xfs_inode *src_ip, struct xfs_inode *target_dp,
struct xfs_name *target_name, struct xfs_inode *target_ip);
-int xfs_attr_get(struct xfs_inode *ip, const char *name, char *value,
- int *valuelenp, int flags);
-int xfs_attr_set(struct xfs_inode *dp, const char *name, char *value,
- int valuelen, int flags);
-int xfs_attr_remove(struct xfs_inode *dp, const char *name, int flags);
+int xfs_attr_get(struct xfs_inode *ip, const unsigned char *name,
+ unsigned char *value, int *valuelenp, int flags);
+int xfs_attr_set(struct xfs_inode *dp, const unsigned char *name,
+ unsigned char *value, int valuelen, int flags);
+int xfs_attr_remove(struct xfs_inode *dp, const unsigned char *name, int flags);
int xfs_attr_list(struct xfs_inode *dp, char *buffer, int bufsize,
int flags, struct attrlist_cursor_kern *cursor);
ssize_t xfs_read(struct xfs_inode *ip, struct kiocb *iocb,