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authorMiaohe Lin <linmiaohe@huawei.com>2021-09-03 00:55:59 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2021-09-03 19:58:13 +0300
commit27fb0956ed08780e480a14c5cca2fd4818e99fa7 (patch)
treeb13dee90f87f8edb815092ca76b6857d3ecff481 /mm/memcontrol.c
parentbec49c067c679e9b7ca7c1aac50b56618c12d879 (diff)
downloadlinux-27fb0956ed08780e480a14c5cca2fd4818e99fa7.tar.xz
mm, memcg: save some atomic ops when flush is already true
Add 'else' to save some atomic ops in obj_stock_flush_required() when flush is already true. No functional change intended here. Link: https://lkml.kernel.org/r/20210807082835.61281-3-linmiaohe@huawei.com 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> Cc: Vladimir Davydov <vdavydov.dev@gmail.com> Cc: Muchun Song <songmuchun@bytedance.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Alex Shi <alexs@kernel.org> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memcontrol.c')
-rw-r--r--mm/memcontrol.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 80840e026c2f..894a24d5ec55 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -2246,7 +2246,7 @@ 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();