> static int mem_cgroup_force_empty_write(struct cgroup *cont, unsigned int event)
> @@ -5013,13 +5011,9 @@ free_out:
> static int mem_cgroup_pre_destroy(struct cgroup *cont)
> {
> struct mem_cgroup *memcg = mem_cgroup_from_cont(cont);
> - int ret;
>
> - css_get(&memcg->css);
> - ret = mem_cgroup_reparent_charges(memcg);
> - css_put(&memcg->css);
> -
> - return ret;
> + mem_cgroup_reparent_charges(memcg);
> + return 0;
> }
>
Why don't you make pre_destroy() return void?
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