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| author | Theodore Ts'o <tytso@mit.edu> | 2013-08-16 22:06:14 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2013-08-16 22:06:14 -0400 |
| commit | 5b61de757535095c99212c1ed857c3a0e0bbe386 (patch) | |
| tree | f09415201c98595e10e5fdb84a2e39bd97e9a554 | |
| parent | 7869a4a6c5caa7b2e5c41ccaf46eb3371f88eea7 (diff) | |
| download | linux-5b61de757535095c99212c1ed857c3a0e0bbe386.tar.bz2 | |
ext4: start handle at least possible moment when renaming files
In ext4_rename(), don't start the journal handle until the the
directory entries have been successfully looked up.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
| -rw-r--r-- | fs/ext4/namei.c | 23 |
1 files changed, 13 insertions, 10 deletions
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 35f55a0dbc4b..d9b721c172a6 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -3009,7 +3009,7 @@ static struct buffer_head *ext4_get_first_dir_block(handle_t *handle, static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, struct inode *new_dir, struct dentry *new_dentry) { - handle_t *handle; + handle_t *handle = NULL; struct inode *old_inode, *new_inode; struct buffer_head *old_bh, *new_bh, *dir_bh; struct ext4_dir_entry_2 *old_de, *new_de; @@ -3026,14 +3026,6 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, * in separate transaction */ if (new_dentry->d_inode) dquot_initialize(new_dentry->d_inode); - handle = ext4_journal_start(old_dir, EXT4_HT_DIR, - (2 * EXT4_DATA_TRANS_BLOCKS(old_dir->i_sb) + - EXT4_INDEX_EXTRA_TRANS_BLOCKS + 2)); - if (IS_ERR(handle)) - return PTR_ERR(handle); - - if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir)) - ext4_handle_sync(handle); old_bh = ext4_find_entry(old_dir, &old_dentry->d_name, &old_de, NULL); /* @@ -3056,6 +3048,16 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry, new_bh = NULL; } } + + handle = ext4_journal_start(old_dir, EXT4_HT_DIR, + (2 * EXT4_DATA_TRANS_BLOCKS(old_dir->i_sb) + + EXT4_INDEX_EXTRA_TRANS_BLOCKS + 2)); + if (IS_ERR(handle)) + return PTR_ERR(handle); + + if (IS_DIRSYNC(old_dir) || IS_DIRSYNC(new_dir)) + ext4_handle_sync(handle); + if (S_ISDIR(old_inode->i_mode)) { if (new_inode) { retval = -ENOTEMPTY; @@ -3195,7 +3197,8 @@ end_rename: brelse(dir_bh); brelse(old_bh); brelse(new_bh); - ext4_journal_stop(handle); + if (handle) + ext4_journal_stop(handle); if (retval == 0 && force_da_alloc) ext4_alloc_da_blocks(old_inode); return retval; |