On Mon, Jul 30, 2018 at 11:00:58AM -0700, Roman Gushchin wrote:

Introduce the mem_cgroup_put() helper, which helps to eliminate guarding
memcg css release with "#ifdef CONFIG_MEMCG" in multiple places.

Link: http://lkml.kernel.org/r/20180623000600.5818-2-guro@fb.com
Signed-off-by: Roman Gushchin <redacted>
Reviewed-by: Shakeel Butt <redacted>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Shakeel Butt <redacted>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stephen Rothwell <redacted>

Acked-by: Johannes Weiner <hannes@cmpxchg.org>