memcg: remove redundant initialization in mem_cgroup_create()

*mem has been zeroed, that means mem->info has already been filled with 0.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 15aa34b..33add96 100644 (file)
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1024,8 +1024,6 @@ mem_cgroup_create(struct cgroup_subsys *ss, struct cgroup *cont)
 
        res_counter_init(&mem->res);
 
-       memset(&mem->info, 0, sizeof(mem->info));
-
        for_each_node_state(node, N_POSSIBLE)
                if (alloc_mem_cgroup_per_zone_info(mem, node))
                        goto free_out;