memcg, slab: merge memcg_{bind,release}_pages to memcg_{un}charge_slab

Currently we have two pairs of kmemcg-related functions that are called on
slab alloc/free.  The first is memcg_{bind,release}_pages that count the
total number of pages allocated on a kmem cache.  The second is
memcg_{un}charge_slab that {un}charge slab pages to kmemcg resource
counter.  Let's just merge them to keep the code clean.

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

1 files changed, 0 insertions, 2 deletions

diff --git a/mm/slub.c b/mm/slub.c
index 5d1b653183ab..9e288d7c5e6a 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1422,7 +1422,6 @@ static struct page *new_slab(struct kmem_cache *s, gfp_t flags, int node)
 
         order = compound_order(page);
         inc_slabs_node(s, page_to_nid(page), page->objects);
-        memcg_bind_pages(s, order);
         page->slab_cache = s;
         __SetPageSlab(page);
         if (page->pfmemalloc)
@@ -1473,7 +1472,6 @@ static void __free_slab(struct kmem_cache *s, struct page *page)
         __ClearPageSlabPfmemalloc(page);
         __ClearPageSlab(page);
 
-        memcg_release_pages(s, order);
         page_mapcount_reset(page);
         if (current->reclaim_state)
                 current->reclaim_state->reclaimed_slab += pages;