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ext3: fix hang on umount with quotas when journal is aborted 

Call dquot_drop() from ext3_dquot_drop() even if we fail to start a
transaction.  Otherwise we never get to dropping references to quota
structures from the inode and umount will hang indefinitely.  Thanks to
Payphone LIOU for spotting the problem.

Signed-off-by: Jan Kara <jack@suse.cz>
Cc: Payphone LIOU <lioupayphone@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jan Kara 2008-04-28 02:16:13 -07:00 committed by Linus Torvalds
parent 0b23076988
commit 07c9938a4e
1 changed files with 7 additions and 1 deletions
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8
fs/ext3/super.c
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@ -2639,8 +2639,14 @@ static int ext3_dquot_drop(struct inode *inode)
/* We may delete quota structure so we need to reserve enough blocks */
handle = ext3_journal_start(inode, 2*EXT3_QUOTA_DEL_BLOCKS(inode->i_sb));
if (IS_ERR(handle))
if (IS_ERR(handle)) {
/*
* We call dquot_drop() anyway to at least release references
* to quota structures so that umount does not hang.
*/
dquot_drop(inode);
return PTR_ERR(handle);
}
ret = dquot_drop(inode);
err = ext3_journal_stop(handle);
if (!ret)