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memcg: remove duplication detection for mem_cgroup_uncharge_swap

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__mem_cgroup_uncharge_swap is only called in mem_cgroup_uncharge_swap, if
mem cgroup is disabled, __mem_cgroup_uncharge_swap cannot be called. 
Therefore, there is no need to judge whether mem_cgroup is disabled or
not.

Link: https://lkml.kernel.org/r/20230819081302.1217098-1-lujialin4@huawei.com
Signed-off-by: Lu Jialin <lujialin4@huawei.com>
Acked-by: Shakeel Butt <shakeelb@google.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Lu Jialin 2023-08-19 08:13:02 +00:00 committed by Andrew Morton
parent 07e09c483c
commit 14a405c3a9
1 changed files with 0 additions and 3 deletions
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3
mm/memcontrol.c
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@ -7535,9 +7535,6 @@ void __mem_cgroup_uncharge_swap(swp_entry_t entry, unsigned int nr_pages)
struct mem_cgroup *memcg;
unsigned short id;
if (mem_cgroup_disabled())
return;
id = swap_cgroup_record(entry, 0, nr_pages);
rcu_read_lock();
memcg = mem_cgroup_from_id(id);