* [PATCH] mm/page_alloc: simplify update of pgdat in wake_all_kswapds
@ 2022-03-22 11:56 Chen Wandun
0 siblings, 0 replies; only message in thread
From: Chen Wandun @ 2022-03-22 11:56 UTC (permalink / raw)
To: linux-mm, linux-kernel, akpm
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@huawei.com>
---
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
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2022-03-22 11:37 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-03-22 11:56 [PATCH] mm/page_alloc: simplify update of pgdat in wake_all_kswapds Chen Wandun
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox