mm: vmpressure: use mem_cgroup_is_root API
authorYang Shi <yang.shi@linux.alibaba.com>
Thu, 2 Apr 2020 04:10:02 +0000 (21:10 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 2 Apr 2020 16:35:31 +0000 (09:35 -0700)
commitd8a1c03ff797050b4310bd34b5ef5c0d5c7491e6
tree4ac8ad5edffb4788e798dcfc5e5afed3b9544a0d
parent565dc842313fde3d0a2e817f96b42bd6a1eb0cad
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>
mm/vmpressure.c