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authorAl Viro <viro@zeniv.linux.org.uk>2013-06-29 13:23:08 +0400
committerAl Viro <viro@zeniv.linux.org.uk>2013-07-03 16:23:28 +0400
commitaf51a2ac36d1f96bee30438ec95a51e4635d1e33 (patch)
tree51aaa115bd9678153c425c0fb4b98472bcf666e5 /fs
parent46a1c2c7ae53de2a5676754b54a73c591a3951d2 (diff)
downloadlinux-af51a2ac36d1f96bee30438ec95a51e4635d1e33.tar.bz2
ext4: ->tmpfile() support
very similar to ext3 counterpart... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
-rw-r--r--fs/ext4/namei.c47
1 files changed, 46 insertions, 1 deletions
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 6653fc35ecb7..f91002f8c017 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -2299,6 +2299,45 @@ retry:
return err;
}
+static int ext4_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode)
+{
+ handle_t *handle;
+ struct inode *inode;
+ int err, retries = 0;
+
+ dquot_initialize(dir);
+
+retry:
+ inode = ext4_new_inode_start_handle(dir, mode,
+ NULL, 0, NULL,
+ EXT4_HT_DIR,
+ EXT4_MAXQUOTAS_INIT_BLOCKS(dir->i_sb) +
+ 4 + EXT4_XATTR_TRANS_BLOCKS);
+ handle = ext4_journal_current_handle();
+ err = PTR_ERR(inode);
+ if (!IS_ERR(inode)) {
+ inode->i_op = &ext4_file_inode_operations;
+ inode->i_fop = &ext4_file_operations;
+ ext4_set_aops(inode);
+ err = ext4_orphan_add(handle, inode);
+ if (err)
+ goto err_drop_inode;
+ mark_inode_dirty(inode);
+ d_tmpfile(dentry, inode);
+ unlock_new_inode(inode);
+ }
+ if (handle)
+ ext4_journal_stop(handle);
+ if (err == -ENOSPC && ext4_should_retry_alloc(dir->i_sb, &retries))
+ goto retry;
+ return err;
+err_drop_inode:
+ ext4_journal_stop(handle);
+ unlock_new_inode(inode);
+ iput(inode);
+ return err;
+}
+
struct ext4_dir_entry_2 *ext4_init_dot_dotdot(struct inode *inode,
struct ext4_dir_entry_2 *de,
int blocksize, int csum_size,
@@ -2906,7 +2945,7 @@ static int ext4_link(struct dentry *old_dentry,
retry:
handle = ext4_journal_start(dir, EXT4_HT_DIR,
(EXT4_DATA_TRANS_BLOCKS(dir->i_sb) +
- EXT4_INDEX_EXTRA_TRANS_BLOCKS));
+ EXT4_INDEX_EXTRA_TRANS_BLOCKS) + 1);
if (IS_ERR(handle))
return PTR_ERR(handle);
@@ -2920,6 +2959,11 @@ retry:
err = ext4_add_entry(handle, dentry, inode);
if (!err) {
ext4_mark_inode_dirty(handle, inode);
+ /* this can happen only for tmpfile being
+ * linked the first time
+ */
+ if (inode->i_nlink == 1)
+ ext4_orphan_del(handle, inode);
d_instantiate(dentry, inode);
} else {
drop_nlink(inode);
@@ -3172,6 +3216,7 @@ const struct inode_operations ext4_dir_inode_operations = {
.mkdir = ext4_mkdir,
.rmdir = ext4_rmdir,
.mknod = ext4_mknod,
+ .tmpfile = ext4_tmpfile,
.rename = ext4_rename,
.setattr = ext4_setattr,
.setxattr = generic_setxattr,