From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758232AbZAJAtk (ORCPT ); Fri, 9 Jan 2009 19:49:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753820AbZAJAtc (ORCPT ); Fri, 9 Jan 2009 19:49:32 -0500 Received: from fgwmail6.fujitsu.co.jp ([192.51.44.36]:55275 "EHLO fgwmail6.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752858AbZAJAtb (ORCPT ); Fri, 9 Jan 2009 19:49:31 -0500 Message-ID: <8c182b969c7f3c9c583b879709767ed7.squirrel@webmail-b.css.fujitsu.com> In-Reply-To: <6599ad830901091623i2c3f6ce1ma88c845074b7c013@mail.gmail.com> References: <20090108182556.621e3ee6.kamezawa.hiroyu@jp.fujitsu.com> <20090108182817.2c393351.kamezawa.hiroyu@jp.fujitsu.com> <6599ad830901091623i2c3f6ce1ma88c845074b7c013@mail.gmail.com> Date: Sat, 10 Jan 2009 09:49:28 +0900 (JST) Subject: Re: [RFC][PATCH 1/4] cgroup: support per cgroup subsys state ID (CSS ID) From: "KAMEZAWA Hiroyuki" To: "Paul Menage" Cc: "KAMEZAWA Hiroyuki" , "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , "balbir@linux.vnet.ibm.com" , "nishimura@mxp.nes.nec.co.jp" , "lizf@cn.fujitsu.com" User-Agent: SquirrelMail/1.4.16 MIME-Version: 1.0 Content-Type: text/plain;charset=iso-2022-jp Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) Importance: Normal Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Paul Menage さんは書きました： > On Thu, Jan 8, 2009 at 1:28 AM, KAMEZAWA Hiroyuki > wrote: >> + * >> + * Looking up and scanning function should be called under >> rcu_read_lock(). >> + * Taking cgroup_mutex()/hierarchy_mutex() is not necessary for all >> calls. > > Can you clarify here - do you mean "not necessary for any calls" > (calls to what?) or "not necessary for some calls"? I presume the > former. > Ah, sorry bad text. not necessary for any calls related to css_id. -Kame