1 files changed, 3 insertions, 0 deletions

diff --git a/fs/xfs/xfs_trans_resv.h b/fs/xfs/xfs_trans_resv.h
index b8d5666990fe..140d3f367284 100644
--- a/fs/xfs/xfs_trans_resv.h
+++ b/fs/xfs/xfs_trans_resv.h
@@ -65,6 +65,9 @@ struct xfs_trans_resv {
         struct xfs_trans_res    tr_fsyncts;     /* update timestamps on fsync */
 };
 
+/* shorthand way of accessing reservation structure */
+#define M_RES(mp)       (&(mp)->m_resv)
+
 /*
  * Per-extent log reservation for the allocation btree changes
  * involved in freeing or allocating an extent.