memcgroup: return negative error code in mem_cgroup_create()
Cgroup requires the subsystem to return negative error code on error in the
create method.
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Balbir Singh <balbir@in.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 bb4d7ac..631002d 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1100,7 +1100,7 @@
mem = kzalloc(sizeof(struct mem_cgroup), GFP_KERNEL);
if (mem == NULL)
- return NULL;
+ return ERR_PTR(-ENOMEM);
res_counter_init(&mem->res);
@@ -1116,7 +1116,7 @@
free_mem_cgroup_per_zone_info(mem, node);
if (cont->parent != NULL)
kfree(mem);
- return NULL;
+ return ERR_PTR(-ENOMEM);
}
static void mem_cgroup_pre_destroy(struct cgroup_subsys *ss,