The patch titled
Subject: mm, memcg: save some atomic ops when flush is already true
has been removed from the -mm tree. Its filename was
mm-memcg-save-some-atomic-ops-when-flush-is-already-true.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Subject: 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@xxxxxxxxxx
Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx>
Reviewed-by: Shakeel Butt <shakeelb@xxxxxxxxxx>
Reviewed-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Acked-by: Roman Gushchin <guro@xxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Cc: Vladimir Davydov <vdavydov.dev@xxxxxxxxx>
Cc: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Alex Shi <alexs@xxxxxxxxxx>
Cc: Wei Yang <richard.weiyang@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memcontrol.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/memcontrol.c~mm-memcg-save-some-atomic-ops-when-flush-is-already-true
+++ a/mm/memcontrol.c
@@ -2246,7 +2246,7 @@ static void drain_all_stock(struct mem_c
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();
_
Patches currently in -mm which might be from linmiaohe@xxxxxxxxxx are
mm-page_allocc-avoid-accessing-uninitialized-pcp-page-migratetype.patch
mm-memory_hotplug-use-helper-zone_is_zone_device-to-simplify-the-code.patch
mm-memory_hotplug-make-hwpoisoned-dirty-swapcache-pages-unmovable.patch
mm-zsmallocc-close-race-window-between-zs_pool_dec_isolated-and-zs_unregister_migration.patch
mm-zsmallocc-combine-two-atomic-ops-in-zs_pool_dec_isolated.patch
