Review: Fix dbflush panic in xfs_qm_sync

Donald Douwsma
2007-10-15T23:29:32Z

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This patch adds the check originally made by xfs_qm_syncall() to xfs_qm_sync()

Signed-off-by: Donald Douwsma <donaldd@sgi.com>

--- 2.6.x-xfs.orig/fs/xfs/quota/xfs_qm.c
+++ 2.6.x-xfs/fs/xfs/quota/xfs_qm.c
@@ -1007,6 +1007,9 @@ 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.