Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757380Ab2EaG26 (ORCPT ); Thu, 31 May 2012 02:28:58 -0400 Received: from mail-pb0-f46.google.com ([209.85.160.46]:42923 "EHLO mail-pb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751522Ab2EaG24 (ORCPT ); Thu, 31 May 2012 02:28:56 -0400 Date: Wed, 30 May 2012 23:28:54 -0700 (PDT) From: David Rientjes X-X-Sender: rientjes@chino.kir.corp.google.com To: KOSAKI Motohiro cc: Kamezawa Hiroyuki , 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 Subject: Re: [PATCH] meminfo: show /proc/meminfo base on container's memcg In-Reply-To: <4FC70E5E.1010003@gmail.com> Message-ID: 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> User-Agent: Alpine 2.00 (DEB 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 966 Lines: 20 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. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/