memcg, slab: separate memcg vs root cache creation paths

Memcg-awareness turned kmem_cache_create() into a dirty interweaving of
memcg-only and except-for-memcg calls.  To clean this up, let's move the
code responsible for memcg cache creation to a separate function.

Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Glauber Costa <glommer@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 0 insertions, 6 deletions

diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index ab7f02884983..02d3072841e9 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -638,12 +638,6 @@ static inline int memcg_cache_id(struct mem_cgroup *memcg)
         return -1;
 }
 
-static inline char *memcg_create_cache_name(struct mem_cgroup *memcg,
-                                            struct kmem_cache *root_cache)
-{
-        return NULL;
-}
-
 static inline int memcg_alloc_cache_params(struct mem_cgroup *memcg,
                 struct kmem_cache *s, struct kmem_cache *root_cache)
 {