diff --git a/fs/xfs/xfs_trans.h b/fs/xfs/xfs_trans.h
index 57339e4..d06919e 100644
--- a/fs/xfs/xfs_trans.h
+++ b/fs/xfs/xfs_trans.h
@@ -267,6 +267,7 @@
 #define XFS_QM_DQALLOC_LOG_RES(mp)	((mp)->m_reservations.tr_qm_dqalloc)
 #define XFS_QM_QUOTAOFF_LOG_RES(mp)	((mp)->m_reservations.tr_qm_quotaoff)
 #define XFS_QM_QUOTAOFF_END_LOG_RES(mp)	((mp)->m_reservations.tr_qm_equotaoff)
+#define XFS_SB_LOG_RES(mp)		((mp)->m_reservations.tr_sb)
 
 /*
  * Various log count values.