Hello, KAME. On Thu, Jun 28, 2012 at 1:33 AM, Kamezawa Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> wrote: >> Ooh, once memcg drops the __DEPRECATED_clear_css_refs, cgroup_rmdir() >> will mark the cgroup dead before start calling pre_destroy() and none >> of the above will happen. >> > > Hm, threads which touches memcg should hold memcg's reference count rather > than css. > Right ? IIUC, one of reason is a reference from kswapd etc...hm. I'll check > it. Not sure I'm following. I meant that css_tryget() will always fail once pre_destroy() calls being for the cgroup, so no new child or reference can be created for it after that point. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe cgroups" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
