diff mbox series

[v2,2/3] mm, memcg: save some atomic ops when flush is already true

Message ID 20210807082835.61281-3-linmiaohe@huawei.com (mailing list archive)
State New
Headers show
Series Cleanups and fixup for memcontrol | expand

Commit Message

Miaohe Lin Aug. 7, 2021, 8:28 a.m. UTC 
Add 'else' to save some atomic ops in obj_stock_flush_required() when
flush is already true. No functional change intended here.

Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Acked-by: Roman Gushchin <guro@fb.com>
Acked-by: Michal Hocko <mhocko@suse.com>
---
 mm/memcontrol.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 6580c2381a3e..7fe242d92802 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2231,7 +2231,7 @@  static void drain_all_stock(struct mem_cgroup *root_memcg)
 		if (memcg && stock->nr_pages &&
 		    mem_cgroup_is_descendant(memcg, root_memcg))
 			flush = true;
-		if (obj_stock_flush_required(stock, root_memcg))
+		else if (obj_stock_flush_required(stock, root_memcg))
 			flush = true;
 		rcu_read_unlock();