From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail202.messagelabs.com (mail202.messagelabs.com [216.82.254.227]) by kanga.kvack.org (Postfix) with ESMTP id 5BCF68D0039 for ; Fri, 4 Mar 2011 04:08:24 -0500 (EST) Received: from m4.gw.fujitsu.co.jp (unknown [10.0.50.74]) by fgwmail5.fujitsu.co.jp (Postfix) with ESMTP id 81A7A3EE0C1 for ; Fri, 4 Mar 2011 18:08:19 +0900 (JST) Received: from smail (m4 [127.0.0.1]) by outgoing.m4.gw.fujitsu.co.jp (Postfix) with ESMTP id 5FE9245DE50 for ; Fri, 4 Mar 2011 18:08:19 +0900 (JST) Received: from s4.gw.fujitsu.co.jp (s4.gw.fujitsu.co.jp [10.0.50.94]) by m4.gw.fujitsu.co.jp (Postfix) with ESMTP id 4449C45DE54 for ; Fri, 4 Mar 2011 18:08:19 +0900 (JST) Received: from s4.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s4.gw.fujitsu.co.jp (Postfix) with ESMTP id 30AC21DB8037 for ; Fri, 4 Mar 2011 18:08:19 +0900 (JST) Received: from m106.s.css.fujitsu.com (m106.s.css.fujitsu.com [10.249.87.106]) by s4.gw.fujitsu.co.jp (Postfix) with ESMTP id E93E9E78004 for ; Fri, 4 Mar 2011 18:08:18 +0900 (JST) Date: Fri, 4 Mar 2011 18:01:57 +0900 From: KAMEZAWA Hiroyuki Subject: Re: [Bugme-new] [Bug 30432] New: rmdir on cgroup can cause hang tasks Message-Id: <20110304180157.133fdfd1.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <20110304172815.9d9e3672.kamezawa.hiroyu@jp.fujitsu.com> References: <20110304000355.4f68bab1.akpm@linux-foundation.org> <20110304172815.9d9e3672.kamezawa.hiroyu@jp.fujitsu.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: KAMEZAWA Hiroyuki Cc: Andrew Morton , Daniel Poelzleithner , bugzilla-daemon@bugzilla.kernel.org, linux-mm@kvack.org, bugme-daemon@bugzilla.kernel.org, containers@lists.osdl.org, Paul Menage On Fri, 4 Mar 2011 17:28:15 +0900 KAMEZAWA Hiroyuki wrote: This seems.... > == > static void mem_cgroup_start_move(struct mem_cgroup *mem) > { > ..... > put_online_cpus(); > > synchronize_rcu(); <---------(*) > } > == > But this may scan LRU of memcg forever and SysRq+T just shows above stack. I'll check a tree before THP and force_empty again -Kame -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. 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: email@kvack.org