Linux-libre 4.5-gnu

1 files changed, 11 insertions, 7 deletions

diff --git a/mm/compaction.c b/mm/compaction.c
index de3e1e71c..585de54db 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -1658,14 +1658,15 @@ static void __compact_pgdat(pg_data_t *pgdat, struct compact_control *cc)
 				!compaction_deferred(zone, cc->order))
 			compact_zone(zone, cc);
 
-		if (cc->order > 0) {
-			if (zone_watermark_ok(zone, cc->order,
-						low_wmark_pages(zone), 0, 0))
-				compaction_defer_reset(zone, cc->order, false);
-		}
-
 		VM_BUG_ON(!list_empty(&cc->freepages));
 		VM_BUG_ON(!list_empty(&cc->migratepages));
+
+		if (is_via_compact_memory(cc->order))
+			continue;
+
+		if (zone_watermark_ok(zone, cc->order,
+				low_wmark_pages(zone), 0, 0))
+			compaction_defer_reset(zone, cc->order, false);
 	}
 }
 
@@ -1708,7 +1709,10 @@ static void compact_nodes(void)
 /* The written value is actually unused, all memory is compacted */
 int sysctl_compact_memory;
 
-/* This is the entry point for compacting all nodes via /proc/sys/vm */
+/*
+ * This is the entry point for compacting all nodes via
+ * /proc/sys/vm/compact_memory
+ */
 int sysctl_compaction_handler(struct ctl_table *table, int write,
 			void __user *buffer, size_t *length, loff_t *ppos)
 {