memcg: hierarchy avoid unnecessary reclaim

[linux-2.6-omap-h63xx.git] / mm / memcontrol.c

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 964a70035e8f9ef24a8777e0db9c1c1d854a4273..9b4993ee46b315187600f48cac8236cebd7c46af 100644 (file)
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -606,6 +606,8 @@ static int mem_cgroup_hierarchical_reclaim(struct mem_cgroup *root_mem,
        ret = try_to_free_mem_cgroup_pages(root_mem, gfp_mask, noswap);
        if (mem_cgroup_check_under_limit(root_mem))
                return 0;
+       if (!root_mem->use_hierarchy)
+               return ret;
 
        next_mem = mem_cgroup_get_first_node(root_mem);