Commit d8a1c03f authored by Yang Shi's avatar Yang Shi Committed by Linus Torvalds

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: default avatarYang Shi <yang.shi@linux.alibaba.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Reviewed-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Reviewed-by: default avatarDavid Hildenbrand <david@redhat.com>
Acked-by: default avatarMichal Hocko <mhocko@suse.com>
Acked-by: default avatarDavid Rientjes <rientjes@google.com>
Link: http://lkml.kernel.org/r/1581398649-125989-2-git-send-email-yang.shi@linux.alibaba.comSigned-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 565dc842
...@@ -280,7 +280,7 @@ void vmpressure(gfp_t gfp, struct mem_cgroup *memcg, bool tree, ...@@ -280,7 +280,7 @@ void vmpressure(gfp_t gfp, struct mem_cgroup *memcg, bool tree,
enum vmpressure_levels level; enum vmpressure_levels level;
/* For now, no users for root-level efficiency */ /* For now, no users for root-level efficiency */
if (!memcg || memcg == root_mem_cgroup) if (!memcg || mem_cgroup_is_root(memcg))
return; return;
spin_lock(&vmpr->sr_lock); spin_lock(&vmpr->sr_lock);
......
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