Hello, On Thu, Apr 12, 2012 at 08:30:22PM +0900, KAMEZAWA Hiroyuki wrote: > +/* > + * This function is called after ->destroy(). So, we cannot access cgroup > + * of this memcg. > + */ > +static void mem_cgroup_recharge(struct work_struct *work) So, ->pre_destroy per-se isn't gonna go away. It's just gonna be this callback which cgroup core uses to unilaterally notify that the cgroup is going away, so no need to do this cleanup asynchronously from ->destroy(). It's okay to keep doing it synchronously from ->pre_destroy(). The only thing is that it can't fail. Thanks. -- tejun -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>