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Date:   Mon, 18 Sep 2017 11:11:58 +0200
From:   Greg Kroah-Hartman <>
Cc:     Greg Kroah-Hartman <>,,
        "Darrick J. Wong" <>,
        Brian Foster <>
Subject: [PATCH 4.9 49/78] xfs: dont leak quotacheck dquots when cow recovery

4.9-stable review patch.  If anyone has any objections, please let me know.


From: "Darrick J. Wong" <>

commit 77aff8c76425c8f49b50d0b9009915066739e7d2 upstream.

If we fail a mount on account of cow recovery errors, it's possible that
a previous quotacheck left some dquots in memory.  The bailout clause of
xfs_mountfs forgets to purge these, and so we leak them.  Fix that.

Signed-off-by: Darrick J. Wong <>
Reviewed-by: Brian Foster <>
Signed-off-by: Greg Kroah-Hartman <>
 fs/xfs/xfs_mount.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -1004,6 +1004,8 @@ xfs_mountfs(
 	xfs_reclaim_inodes(mp, SYNC_WAIT);
+	/* Clean out dquots that might be in memory after quotacheck. */
+	xfs_qm_unmount(mp);
 	mp->m_flags |= XFS_MOUNT_UNMOUNTING;

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