diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 0f92e04..a34d9fc 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3367,10 +3367,14 @@
 {
 	struct zoneref *z;
 	struct zone *zone;
+	pg_data_t *last_pgdat = NULL;
 
 	for_each_zone_zonelist_nodemask(zone, z, ac->zonelist,
-						ac->high_zoneidx, ac->nodemask)
-		wakeup_kswapd(zone, order, ac_classzone_idx(ac));
+					ac->high_zoneidx, ac->nodemask) {
+		if (last_pgdat != zone->zone_pgdat)
+			wakeup_kswapd(zone, order, ac_classzone_idx(ac));
+		last_pgdat = zone->zone_pgdat;
+	}
 }
 
 static inline unsigned int