Merge branch 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull vfs 'statx()' update from Al Viro.

This adds the new extended stat() interface that internally subsumes our
previous stat interfaces, and allows user mode to specify in more detail
what kind of information it wants.

It also allows for some explicit synchronization information to be
passed to the filesystem, which can be relevant for network filesystems:
is the cached value ok, or do you need open/close consistency, or what?

From David Howells.

Andreas Dilger points out that the first version of the extended statx
interface was posted June 29, 2010:

    https://www.spinics.net/lists/linux-fsdevel/msg33831.html

* 'rebased-statx' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  statx: Add a system call to make enhanced file info available

6 files changed, 13 insertions, 9 deletions

diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c
index 44a74cf1372c..d2fb9c8ed205 100644
--- a/drivers/base/devtmpfs.c
+++ b/drivers/base/devtmpfs.c
@@ -309,7 +309,8 @@ static int handle_remove(const char *nodename, struct device *dev)
 	if (d_really_is_positive(dentry)) {
 		struct kstat stat;
 		struct path p = {.mnt = parent.mnt, .dentry = dentry};
-		err = vfs_getattr(&p, &stat);
+		err = vfs_getattr(&p, &stat, STATX_TYPE | STATX_MODE,
+				  AT_STATX_SYNC_AS_STAT);
 		if (!err && dev_mynode(dev, d_inode(dentry), &stat)) {
 			struct iattr newattrs;
 			/*
diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 0712365f2729..0ecb6461ed81 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -1176,7 +1176,8 @@ loop_get_status(struct loop_device *lo, struct loop_info64 *info)
 
 	if (lo->lo_state != Lo_bound)
 		return -ENXIO;
-	error = vfs_getattr(&file->f_path, &stat);
+	error = vfs_getattr(&file->f_path, &stat,
+			    STATX_INO, AT_STATX_SYNC_AS_STAT);
 	if (error)
 		return error;
 	memset(info, 0, sizeof(*info));
diff --git a/drivers/mtd/ubi/build.c b/drivers/mtd/ubi/build.c
index 85d54f37e28f..77513195f50e 100644
--- a/drivers/mtd/ubi/build.c
+++ b/drivers/mtd/ubi/build.c
@@ -1159,7 +1159,7 @@ static struct mtd_info * __init open_mtd_by_chdev(const char *mtd_dev)
 	if (err)
 		return ERR_PTR(err);
 
-	err = vfs_getattr(&path, &stat);
+	err = vfs_getattr(&path, &stat, STATX_TYPE, AT_STATX_SYNC_AS_STAT);
 	path_put(&path);
 	if (err)
 		return ERR_PTR(err);
diff --git a/drivers/mtd/ubi/kapi.c b/drivers/mtd/ubi/kapi.c
index 88b1897aeb40..d4b2e8744498 100644
--- a/drivers/mtd/ubi/kapi.c
+++ b/drivers/mtd/ubi/kapi.c
@@ -314,7 +314,7 @@ struct ubi_volume_desc *ubi_open_volume_path(const char *pathname, int mode)
 	if (error)
 		return ERR_PTR(error);
 
-	error = vfs_getattr(&path, &stat);
+	error = vfs_getattr(&path, &stat, STATX_TYPE, AT_STATX_SYNC_AS_STAT);
 	path_put(&path);
 	if (error)
 		return ERR_PTR(error);
diff --git a/drivers/staging/lustre/lustre/llite/file.c b/drivers/staging/lustre/lustre/llite/file.c
index 10adfcdd7035..481c0d01d4c6 100644
--- a/drivers/staging/lustre/lustre/llite/file.c
+++ b/drivers/staging/lustre/lustre/llite/file.c
@@ -2952,15 +2952,16 @@ static int ll_inode_revalidate(struct dentry *dentry, __u64 ibits)
 	return rc;
 }
 
-int ll_getattr(struct vfsmount *mnt, struct dentry *de, struct kstat *stat)
+int ll_getattr(const struct path *path, struct kstat *stat,
+	       u32 request_mask, unsigned int flags)
 {
-	struct inode *inode = d_inode(de);
+	struct inode *inode = d_inode(path->dentry);
 	struct ll_sb_info *sbi = ll_i2sbi(inode);
 	struct ll_inode_info *lli = ll_i2info(inode);
 	int res;
 
-	res = ll_inode_revalidate(de, MDS_INODELOCK_UPDATE |
-				      MDS_INODELOCK_LOOKUP);
+	res = ll_inode_revalidate(path->dentry,
+				  MDS_INODELOCK_UPDATE | MDS_INODELOCK_LOOKUP);
 	ll_stats_ops_tally(sbi, LPROC_LL_GETATTR, 1);
 
 	if (res)
diff --git a/drivers/staging/lustre/lustre/llite/llite_internal.h b/drivers/staging/lustre/lustre/llite/llite_internal.h
index ecdfd0c29b7f..55f68acd85d1 100644
--- a/drivers/staging/lustre/lustre/llite/llite_internal.h
+++ b/drivers/staging/lustre/lustre/llite/llite_internal.h
@@ -750,7 +750,8 @@ int ll_file_open(struct inode *inode, struct file *file);
 int ll_file_release(struct inode *inode, struct file *file);
 int ll_release_openhandle(struct inode *, struct lookup_intent *);
 int ll_md_real_close(struct inode *inode, fmode_t fmode);
-int ll_getattr(struct vfsmount *mnt, struct dentry *de, struct kstat *stat);
+int ll_getattr(const struct path *path, struct kstat *stat,
+	       u32 request_mask, unsigned int flags);
 struct posix_acl *ll_get_acl(struct inode *inode, int type);
 int ll_migrate(struct inode *parent, struct file *file, int mdtidx,
 	       const char *name, int namelen);