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[XFS] Fix dbflush panic in xfs_qm_sync. 

The recent behaviour layer removal dropped the check for quotas that have
been requested at mount time but have subsequently been turned off. This
results in a panic when accessing m_quotainfo which has been freed.

This patch adds the check originally made by xfs_qm_syncall() to
xfs_qm_sync().

SGI-PV: 969769
SGI-Modid: xfs-linux-melb:xfs-kern:29908a

Signed-off-by: Donald Douwsma <donaldd@sgi.com>
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
This commit is contained in:
Donald Douwsma 2007-11-23 16:27:42 +11:00 committed by Lachlan McIlroy
parent c6143911a7
commit d757762bf2
1 changed files with 3 additions and 0 deletions
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3
fs/xfs/quota/xfs_qm.c
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@ -1008,6 +1008,9 @@ xfs_qm_sync(
boolean_t nowait;
int error;
if (! XFS_IS_QUOTA_ON(mp))
return 0;
restarts = 0;
/*
* We won't block unless we are asked to.