xfs: don't leak quotacheck dquots when cow recovery

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 <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/fs/xfs/xfs_mount.c b/fs/xfs/xfs_mount.c
index 151a82db0945..ea7d4b4e50d0 100644
--- a/fs/xfs/xfs_mount.c
+++ b/fs/xfs/xfs_mount.c
@@ -1024,6 +1024,8 @@ xfs_mountfs(
         IRELE(rip);
         cancel_delayed_work_sync(&mp->m_reclaim_work);
         xfs_reclaim_inodes(mp, SYNC_WAIT);
+        /* Clean out dquots that might be in memory after quotacheck. */
+        xfs_qm_unmount(mp);
  out_log_dealloc:
         mp->m_flags |= XFS_MOUNT_UNMOUNTING;
         xfs_log_mount_cancel(mp);