From: Chen Ni <nichen@iscas.ac.cn>
Date: Thu, 17 Apr 2025 08:43:30 +0000 (+0800)
Subject: mm: memcontrol: remove unnecessary NULL check before free_percpu()
X-Git-Tag: v6.16-rc1~92^2~150
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=6e14fd33f148cf36db9bcee7561f2b5b6c3b65aa;p=thirdparty%2Flinux.git

mm: memcontrol: remove unnecessary NULL check before free_percpu()

free_percpu() checks for NULL pointers internally.  Remove unneeded NULL
check here.

Link: https://lkml.kernel.org/r/20250417084330.937380-1-nichen@iscas.ac.cn
Signed-off-by: Chen Ni <nichen@iscas.ac.cn>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/mm/memcontrol-v1.c b/mm/memcontrol-v1.c
index 4a9cf27a70af0..54c49cbfc968c 100644
--- a/mm/memcontrol-v1.c
+++ b/mm/memcontrol-v1.c
@@ -2198,8 +2198,7 @@ bool memcg1_alloc_events(struct mem_cgroup *memcg)
 
 void memcg1_free_events(struct mem_cgroup *memcg)
 {
-	if (memcg->events_percpu)
-		free_percpu(memcg->events_percpu);
+	free_percpu(memcg->events_percpu);
 }
 
 static int __init memcg1_init(void)