memcg: rename some cache id related variables
memcg_limited_groups_array_size, which defines the size of memcg_caches
arrays, sounds rather cumbersome. Also it doesn't point anyhow that
it's related to kmem/caches stuff. So let's rename it to
memcg_nr_cache_ids. It's concise and points us directly to
memcg_cache_id.
Also, rename kmem_limited_groups to memcg_cache_ida.
Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Greg Thelen <gthelen@google.com>
Cc: Glauber Costa <glommer@gmail.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/slab_common.c b/mm/slab_common.c
index 6e1e4cf..f8899ee 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -116,7 +116,7 @@
if (!memcg) {
size = offsetof(struct memcg_cache_params, memcg_caches);
- size += memcg_limited_groups_array_size * sizeof(void *);
+ size += memcg_nr_cache_ids * sizeof(void *);
} else
size = sizeof(struct memcg_cache_params);
@@ -154,7 +154,7 @@
cur_params = s->memcg_params;
memcpy(new_params->memcg_caches, cur_params->memcg_caches,
- memcg_limited_groups_array_size * sizeof(void *));
+ memcg_nr_cache_ids * sizeof(void *));
new_params->is_root_cache = true;