1 files changed, 6 insertions, 2 deletions

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 0f92e04b58db..a34d9fcf1339 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3367,10 +3367,14 @@ static void wake_all_kswapds(unsigned int order, const struct alloc_context *ac)
 {
         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