diff --git a/mm/page_cgroup.c b/mm/page_cgroup.c
index 39d216d..6bdc67d 100644
--- a/mm/page_cgroup.c
+++ b/mm/page_cgroup.c
@@ -513,11 +513,10 @@
 	length = DIV_ROUND_UP(max_pages, SC_PER_PAGE);
 	array_size = length * sizeof(void *);
 
-	array = vmalloc(array_size);
+	array = vzalloc(array_size);
 	if (!array)
 		goto nomem;
 
-	memset(array, 0, array_size);
 	ctrl = &swap_cgroup_ctrl[type];
 	mutex_lock(&swap_cgroup_mutex);
 	ctrl->length = length;