[XFS] Catch errors resetting quota flags.

Warn to the syslog if we fail to reset the quota flags in the superblock
when a quota check fails.

SGI-PV: 980084
SGI-Modid: xfs-linux-melb:xfs-kern:30789a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Niv Sardi <xaiki@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>

fs/xfs/quota/xfs_qm.c

diff --git a/fs/xfs/quota/xfs_qm.c b/fs/xfs/quota/xfs_qm.c
index e15ee7c..6aa3445 100644
--- a/fs/xfs/quota/xfs_qm.c
+++ b/fs/xfs/quota/xfs_qm.c
@@ -1927,7 +1927,10 @@
 		ASSERT(mp->m_quotainfo != NULL);
 		ASSERT(xfs_Gqm != NULL);
 		xfs_qm_destroy_quotainfo(mp);
-		(void)xfs_mount_reset_sbqflags(mp);
+		if (xfs_mount_reset_sbqflags(mp)) {
+			cmn_err(CE_WARN, "XFS quotacheck %s: "
+				"Failed to reset quota flags.", mp->m_fsname);
+		}
 	} else {
 		cmn_err(CE_NOTE, "XFS quotacheck %s: Done.", mp->m_fsname);
 	}