mm/oom_kill: remove unneeded is_memcg_oom check

oom_cpuset_eligible() is always called when !is_memcg_oom().  Remove this
unnecessary check.

Link: https://lkml.kernel.org/r/20220224115933.20154-1-linmiaohe@huawei.comSigned-off-by: Miaohe Lin <linmiaohe@huawei.com>
Acked-by: David Rientjes <rientjes@google.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

mm/oom_kill.c

@@ -93,9 +93,6 @@ static bool oom_cpuset_eligible(struct task_struct *start,
 	bool ret = false;
 	const nodemask_t *mask = oc->nodemask;
 
-	if (is_memcg_oom(oc))
-		return true;
-
 	rcu_read_lock();
 	for_each_thread(start, tsk) {
 		if (mask) {