There is no need to update last_pgdat for each zone,
only update last_pgdat when iterating the first zone
of a node.
Signed-off-by: Chen Wandun <chenwandun@xxxxxxxxxx>
---
mm/page_alloc.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index f648decfe39d..ea282630aedc 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -4674,9 +4674,10 @@ static void wake_all_kswapds(unsigned int order, gfp_t gfp_mask,
for_each_zone_zonelist_nodemask(zone, z, ac->zonelist, highest_zoneidx,
ac->nodemask) {
- if (last_pgdat != zone->zone_pgdat)
+ if (last_pgdat != zone->zone_pgdat) {
wakeup_kswapd(zone, gfp_mask, order, highest_zoneidx);
- last_pgdat = zone->zone_pgdat;
+ last_pgdat = zone->zone_pgdat;
+ }
}
}
--
2.18.0.huawei.25
