1 files changed, 6 insertions, 0 deletions

diff --git a/fs/xfs/libxfs/xfs_rtbitmap.c b/fs/xfs/libxfs/xfs_rtbitmap.c
index b228c821bae6..eaaff67e9626 100644
--- a/fs/xfs/libxfs/xfs_rtbitmap.c
+++ b/fs/xfs/libxfs/xfs_rtbitmap.c
@@ -505,6 +505,12 @@ xfs_rtmodify_summary_int(
                 uint first = (uint)((char *)sp - (char *)bp->b_addr);
 
                 *sp += delta;
+                if (mp->m_rsum_cache) {
+                        if (*sp == 0 && log == mp->m_rsum_cache[bbno])
+                                mp->m_rsum_cache[bbno]++;
+                        if (*sp != 0 && log < mp->m_rsum_cache[bbno])
+                                mp->m_rsum_cache[bbno] = log;
+                }
                 xfs_trans_log_buf(tp, bp, first, first + sizeof(*sp) - 1);
         }
         if (sum)