From: "Darrick J. Wong" <darrick.wong@oracle.com>
To: darrick.wong@oracle.com
Cc: linux-xfs@vger.kernel.org
Subject: [PATCH 1/5] xfs: don't iunlock the quota ip when quota block allocation fails
Date: Thu, 22 Feb 2018 17:59:48 -0800 [thread overview]
Message-ID: <151935118851.21654.14051188649580444275.stgit@magnolia> (raw)
In-Reply-To: <151935118240.21654.10146641674018880885.stgit@magnolia>
From: Darrick J. Wong <darrick.wong@oracle.com>
In xfs_qm_dqalloc, we join the locked quota inode to the transaction we
use to allocate blocks. If the allocation or mapping fails, we're not
allowed to unlock the inode because the transaction code is in charge of
unlocking it for us. Therefore, remove the iunlock call to avoid
blowing asserts about unbalanced locking + mount hang.
Found by corrupting the AGF and allocating space in the filesystem
(quotacheck) immediately after mount. The upcoming agfl wrapping fixup
test will trigger this scenario.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
---
fs/xfs/xfs_dquot.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/fs/xfs/xfs_dquot.c b/fs/xfs/xfs_dquot.c
index 43572f8..2410acc 100644
--- a/fs/xfs/xfs_dquot.c
+++ b/fs/xfs/xfs_dquot.c
@@ -394,8 +394,6 @@ xfs_qm_dqalloc(
error1:
xfs_defer_cancel(&dfops);
error0:
- xfs_iunlock(quotip, XFS_ILOCK_EXCL);
-
return error;
}
next prev parent reply other threads:[~2018-02-23 2:12 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-02-23 1:59 [PATCH 0/5] xfs: fix various problems Darrick J. Wong
2018-02-23 1:59 ` Darrick J. Wong [this message]
2018-02-27 13:55 ` [PATCH 1/5] xfs: don't iunlock the quota ip when quota block allocation fails Brian Foster
2018-02-23 1:59 ` [PATCH 2/5] xfs: convert a few more directory asserts to corruption returns Darrick J. Wong
2018-02-27 13:55 ` Brian Foster
2018-02-23 2:00 ` [PATCH 3/5] xfs: check for cow blocks before trying to clear them during inode reclaim Darrick J. Wong
2018-02-27 13:55 ` Brian Foster
2018-02-23 2:00 ` [PATCH 4/5] xfs: convert XFS_AGFL_SIZE to a helper function Darrick J. Wong
2018-02-27 19:34 ` Brian Foster
2018-02-23 2:00 ` [PATCH 5/5] xfs: fix agfl wrapping Darrick J. Wong
2018-02-23 4:40 ` Darrick J. Wong
2018-02-23 20:33 ` Darrick J. Wong
2018-02-27 19:35 ` Brian Foster
2018-02-27 21:03 ` Darrick J. Wong
2018-02-28 22:43 ` Brian Foster
2018-02-28 23:20 ` Darrick J. Wong
2018-03-01 17:28 ` Brian Foster
2018-03-01 20:55 ` Darrick J. Wong
2018-03-02 13:12 ` Brian Foster
2018-03-03 13:59 ` Brian Foster
2018-03-05 22:24 ` Darrick J. Wong
2018-03-05 22:53 ` Dave Chinner
2018-03-06 2:15 ` Darrick J. Wong
2018-03-06 12:02 ` Brian Foster
2018-03-01 6:37 ` Darrick J. Wong
2018-03-01 6:42 ` [PATCH v2 " Darrick J. Wong
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