mm: fix off-by-two in __zone_watermark_ok()

[platform/adaptation/renesas_rcar/renesas_kernel.git] / mm / compaction.c

diff --git a/mm/compaction.c b/mm/compaction.c
index 1253d7a..e6670c3 100644 (file)
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -365,8 +365,10 @@ static isolate_migrate_t isolate_migratepages(struct zone *zone,
                nr_isolated++;
 
                /* Avoid isolating too much */
-               if (cc->nr_migratepages == COMPACT_CLUSTER_MAX)
+               if (cc->nr_migratepages == COMPACT_CLUSTER_MAX) {
+                       ++low_pfn;
                        break;
+               }
        }
 
        acct_isolated(zone, cc);