From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx139.postini.com [74.125.245.139]) by kanga.kvack.org (Postfix) with SMTP id 7C0AA6B005C for ; Thu, 31 May 2012 03:09:52 -0400 (EDT) Received: from m3.gw.fujitsu.co.jp (unknown [10.0.50.73]) by fgwmail5.fujitsu.co.jp (Postfix) with ESMTP id 77D7A3EE0BD for ; Thu, 31 May 2012 16:09:50 +0900 (JST) Received: from smail (m3 [127.0.0.1]) by outgoing.m3.gw.fujitsu.co.jp (Postfix) with ESMTP id 5B35445DEB3 for ; Thu, 31 May 2012 16:09:50 +0900 (JST) Received: from s3.gw.fujitsu.co.jp (s3.gw.fujitsu.co.jp [10.0.50.93]) by m3.gw.fujitsu.co.jp (Postfix) with ESMTP id 43A6545DEAD for ; Thu, 31 May 2012 16:09:50 +0900 (JST) Received: from s3.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s3.gw.fujitsu.co.jp (Postfix) with ESMTP id 32A47E38006 for ; Thu, 31 May 2012 16:09:50 +0900 (JST) Received: from m1000.s.css.fujitsu.com (m1000.s.css.fujitsu.com [10.240.81.136]) by s3.gw.fujitsu.co.jp (Postfix) with ESMTP id DC13BE38003 for ; Thu, 31 May 2012 16:09:49 +0900 (JST) Message-ID: <4FC718BA.8060608@jp.fujitsu.com> Date: Thu, 31 May 2012 16:07:38 +0900 From: Kamezawa Hiroyuki MIME-Version: 1.0 Subject: Re: [PATCH] meminfo: show /proc/meminfo base on container's memcg References: <1338260214-21919-1-git-send-email-gaofeng@cn.fujitsu.com> <4FC6B68C.2070703@jp.fujitsu.com> <4FC6BC3E.5010807@jp.fujitsu.com> <4FC6C111.2060108@jp.fujitsu.com> <4FC6D881.4090706@jp.fujitsu.com> <4FC70355.70805@jp.fujitsu.com> <4FC70E5E.1010003@gmail.com> <4FC711A5.4090003@gmail.com> In-Reply-To: <4FC711A5.4090003@gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: KOSAKI Motohiro Cc: David Rientjes , Gao feng , hannes@cmpxchg.org, mhocko@suse.cz, bsingharora@gmail.com, akpm@linux-foundation.org, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, linux-mm@kvack.org, containers@lists.linux-foundation.org (2012/05/31 15:37), KOSAKI Motohiro wrote: > (5/31/12 2:28 AM), David Rientjes wrote: >> On Thu, 31 May 2012, KOSAKI Motohiro wrote: >> >>>> An application should always know the cgroup that its attached to and be >>>> able to read its state using the command that I gave earlier. >>> >>> No. you don't need why userland folks want namespaces. Even though you don't >>> need namespaces. It doesn't good reason to refuse another use case. >>> >> >> This is tangent to the discussion, we need to revisit why an application >> other than a daemon managing a set of memcgs would ever need to know the >> information in /proc/meminfo. No use-case was ever presented in the >> changelog and its not clear how this is at all relevant. So before >> changing the kernel, please describe how this actually matters in a real- >> world scenario. > > Huh? Don't you know a meanings of a namespace ISOLATION? isolation mean, > isolated container shouldn't be able to access global information. If you > want to lean container/namespace concept, tasting openvz or solaris container > is a good start. > > But anyway, I dislike current implementaion. So, I NAK this patch too. Could you give us advice for improving this ? What idea do you have ? Thanks, -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