From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail203.messagelabs.com (mail203.messagelabs.com [216.82.254.243]) by kanga.kvack.org (Postfix) with ESMTP id 77A086B0093 for ; Fri, 9 Jan 2009 19:24:00 -0500 (EST) Received: from spaceape14.eur.corp.google.com (spaceape14.eur.corp.google.com [172.28.16.148]) by smtp-out.google.com with ESMTP id n0A0Nu39022293 for ; Sat, 10 Jan 2009 00:23:56 GMT Received: from rv-out-0506.google.com (rvbf6.prod.google.com [10.140.82.6]) by spaceape14.eur.corp.google.com with ESMTP id n0A0N5hU006302 for ; Fri, 9 Jan 2009 16:23:54 -0800 Received: by rv-out-0506.google.com with SMTP id f6so13652376rvb.5 for ; Fri, 09 Jan 2009 16:23:53 -0800 (PST) MIME-Version: 1.0 In-Reply-To: <20090108182817.2c393351.kamezawa.hiroyu@jp.fujitsu.com> References: <20090108182556.621e3ee6.kamezawa.hiroyu@jp.fujitsu.com> <20090108182817.2c393351.kamezawa.hiroyu@jp.fujitsu.com> Date: Fri, 9 Jan 2009 16:23:53 -0800 Message-ID: <6599ad830901091623i2c3f6ce1ma88c845074b7c013@mail.gmail.com> Subject: Re: [RFC][PATCH 1/4] cgroup: support per cgroup subsys state ID (CSS ID) From: Paul Menage Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: KAMEZAWA Hiroyuki Cc: "linux-mm@kvack.org" , "linux-kernel@vger.kernel.org" , "balbir@linux.vnet.ibm.com" , "nishimura@mxp.nes.nec.co.jp" , "lizf@cn.fujitsu.com" List-ID: 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. Paul -- 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/ . Don't email: email@kvack.org