From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753258AbYKBGEQ (ORCPT ); Sun, 2 Nov 2008 01:04:16 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751982AbYKBGD7 (ORCPT ); Sun, 2 Nov 2008 01:03:59 -0500 Received: from E23SMTP01.au.ibm.com ([202.81.18.162]:40862 "EHLO e23smtp01.au.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751909AbYKBGD6 (ORCPT ); Sun, 2 Nov 2008 01:03:58 -0500 Message-ID: <490D42C7.4000301@linux.vnet.ibm.com> Date: Sun, 02 Nov 2008 11:33:51 +0530 From: Balbir Singh Reply-To: balbir@linux.vnet.ibm.com Organization: IBM User-Agent: Thunderbird 2.0.0.17 (X11/20080925) MIME-Version: 1.0 To: KAMEZAWA Hiroyuki CC: linux-mm@kvack.org, YAMAMOTO Takashi , Paul Menage , lizf@cn.fujitsu.com, linux-kernel@vger.kernel.org, Nick Piggin , David Rientjes , Pavel Emelianov , Dhaval Giani , Andrew Morton Subject: Re: [mm] [PATCH 4/4] Memory cgroup hierarchy feature selector References: <20081101184812.2575.68112.sendpatchset@balbir-laptop> <20081101184902.2575.11443.sendpatchset@balbir-laptop> <20081102143817.99edca6d.kamezawa.hiroyu@jp.fujitsu.com> In-Reply-To: <20081102143817.99edca6d.kamezawa.hiroyu@jp.fujitsu.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org KAMEZAWA Hiroyuki wrote: > On Sun, 02 Nov 2008 00:19:02 +0530 > Balbir Singh wrote: > >> Don't enable multiple hierarchy support by default. This patch introduces >> a features element that can be set to enable the nested depth hierarchy >> feature. This feature can only be enabled when there is just one cgroup >> (the root cgroup). >> > Why the flag is for the whole system ? > flag-per-subtree is of no use ? Flag per subtree might not be useful, since we charge all the way up to root, which means that all subtrees have the root cgroup and hence the global flag. Thanks for the comments, -- Balbir