memcg: fix memcg_size() calculation

commit 695c60830764945cf61a2cc623eb1392d137223e upstream.

The mem_cgroup structure contains nr_node_ids pointers to
mem_cgroup_per_node objects, not the objects themselves.

Signed-off-by: Vladimir Davydov <vdavydov@parallels.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: Glauber Costa <glommer@openvz.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Balbir Singh <bsingharora@gmail.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 36cc2d0..e0e9792 100644 (file)
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -337,7 +337,7 @@ struct mem_cgroup {
 static size_t memcg_size(void)
 {
        return sizeof(struct mem_cgroup) +
-               nr_node_ids * sizeof(struct mem_cgroup_per_node);
+               nr_node_ids * sizeof(struct mem_cgroup_per_node *);
 }
 
 /* internal only representation about the status of kmem accounting. */