[PATCH] memcg: correct return value at mem_cgroup reclaim

[Liu bo <bo-liu@hotmail.com>]

In order to indicate reclaim has succeeded, mem_cgroup_hierarchical_reclaim() used to return 1.
Now the return value is without indicating whether reclaim has successded usage, so just return the total reclaimed pages don't plus 1.
 
Signed-off-by: Liu Bo <bo-liu@hotmail.com>
---
 
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 14593f5..51b6b3c 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -737,7 +737,7 @@ static int mem_cgroup_hierarchical_reclaim(struct mem_cgroup *root_mem,
   css_put(&victim->css);
   total += ret;
   if (mem_cgroup_check_under_limit(root_mem))
-   return 1 + total;
+   return total;
  }
  return total;
 } 		 	   		  
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