xfs: calculate XFS_TRANS_QM_QUOTAOFF_END space log reservation at mount time

Convert the calculation for end of quotaoff log space reservation
from runtime to mount time.

Signed-off-by: Jie Liu <jeff.liu@oracle.com>
CC: Dave Chinner <david@fromorbit.com>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>

diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h
index 4f5e148..b46009d 100644
--- a/fs/xfs/xfs_mount.h
+++ b/fs/xfs/xfs_mount.h
@@ -44,6 +44,7 @@
 	uint	tr_qm_setqlim;	/* adjust quota limits */
 	uint	tr_qm_dqalloc;	/* allocate quota on disk */
 	uint	tr_qm_quotaoff;	/* turn quota off */
+	uint	tr_qm_equotaoff;/* end of turn quota off */
 } xfs_trans_reservations_t;
 
 #ifndef __KERNEL__