[RFC][for -mm] memory controller enhancements for reclaiming take2 [3/8] define free_mem_cgroup_per_zone_info

[KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>]

Now allocation of per_zone of mem_controller is done by
alloc_mem_cgroup_per_zone_info(). Then it will be good to use
free_mem_cgroup_per_zone_info() for maintainance.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>


 mm/memcontrol.c |    9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

Index: linux-2.6.24-rc3-mm2/mm/memcontrol.c
===================================================================
--- linux-2.6.24-rc3-mm2.orig/mm/memcontrol.c
+++ linux-2.6.24-rc3-mm2/mm/memcontrol.c
@@ -1141,6 +1141,11 @@ static int alloc_mem_cgroup_per_zone_inf
 	return 0;
 }
 
+static void free_mem_cgroup_per_zone_info(struct mem_cgroup *mem, int node)
+{
+	kfree(mem->info.nodeinfo[node]);
+}
+
 
 static struct mem_cgroup init_mem_cgroup;
 
@@ -1171,7 +1176,7 @@ mem_cgroup_create(struct cgroup_subsys *
 	return &mem->css;
 free_out:
 	for_each_node_state(node, N_POSSIBLE)
-		kfree(mem->info.nodeinfo[node]);
+		free_mem_cgroup_per_zone_info(mem, node);
 	if (cont->parent != NULL)
 		kfree(mem);
 	return NULL;
@@ -1191,7 +1196,7 @@ static void mem_cgroup_destroy(struct cg
 	struct mem_cgroup *mem = mem_cgroup_from_cont(cont);
 
 	for_each_node_state(node, N_POSSIBLE)
-		kfree(mem->info.nodeinfo[node]);
+		free_mem_cgroup_per_zone_info(mem, node);
 
 	kfree(mem_cgroup_from_cont(cont));
 }

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