Commit 5b61de75 authored by Theodore Ts'o's avatar Theodore Ts'o

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's avatar"Theodore Ts'o" <[email protected]>
parent 7869a4a6
......@@ -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 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry,
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;
......
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