Commit d8a1c03f authored Apr 01, 2020 by Yang Shi Committed by Linus Torvalds Apr 02, 2020

mm: vmpressure: use mem_cgroup_is_root API



Use mem_cgroup_is_root() API to check if memcg is root memcg instead of
open coding.

Signed-off-by: Yang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: David Rientjes <rientjes@google.com>
Link: http://lkml.kernel.org/r/1581398649-125989-2-git-send-email-yang.shi@linux.alibaba.com


Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 565dc842

mm/vmpressure.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -280,7 +280,7 @@ void vmpressure(gfp_t gfp, struct mem_cgroup *memcg, bool tree,
		enum vmpressure_levels level;

		/* For now, no users for root-level efficiency */
		if (!memcg \|\| memcg == root_mem_cgroup)
		if (!memcg \|\| mem_cgroup_is_root(memcg))
		return;

		spin_lock(&vmpr->sr_lock);

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