mm: oom: add memcg to oom_control

It's a part of oom context just like allocation order and nodemask, so
let's move it to oom_control instead of passing it in the argument list.

Link: http://lkml.kernel.org/r/40e03fd7aaf1f55c75d787128d6d17c5a71226c2.1464358556.git.vdavydov@virtuozzo.com
Signed-off-by: Vladimir Davydov <vdavydov@virtuozzo.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 8129922a1504..f7bb1aef54f2 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -3105,6 +3105,7 @@ __alloc_pages_may_oom(gfp_t gfp_mask, unsigned int order,
         struct oom_control oc = {
                 .zonelist = ac->zonelist,
                 .nodemask = ac->nodemask,
+                .memcg = NULL,
                 .gfp_mask = gfp_mask,
                 .order = order,
         };