From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755128Ab0KRIXf (ORCPT ); Thu, 18 Nov 2010 03:23:35 -0500 Received: from cantor.suse.de ([195.135.220.2]:38234 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753506Ab0KRIXe (ORCPT ); Thu, 18 Nov 2010 03:23:34 -0500 Date: Thu, 18 Nov 2010 09:23:32 +0100 From: Michal Hocko To: Daisuke Nishimura Cc: Andrew Morton , linux-mm@kvack.org, KAMEZAWA Hiroyuki , linux-kernel@vger.kernel.org, balbir@linux.vnet.ibm.com, stable@kernel.org Subject: Re: [PATCH] Make swap accounting default behavior configurable Message-ID: <20101118082332.GB15928@tiehlicka.suse.cz> References: <20101116101726.GA21296@tiehlicka.suse.cz> <20101116124615.978ed940.akpm@linux-foundation.org> <20101117092339.1b7c2d6d.nishimura@mxp.nes.nec.co.jp> <20101116171225.274019cf.akpm@linux-foundation.org> <20101117122801.e9850acf.nishimura@mxp.nes.nec.co.jp> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20101117122801.e9850acf.nishimura@mxp.nes.nec.co.jp> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed 17-11-10 12:28:01, Daisuke Nishimura wrote: > On Tue, 16 Nov 2010 17:12:25 -0800 > Andrew Morton wrote: > > > On Wed, 17 Nov 2010 09:23:39 +0900 Daisuke Nishimura wrote: > > > > > > > > > > > > diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt > > > > > index ed45e98..14eafa5 100644 > > > > > --- a/Documentation/kernel-parameters.txt > > > > > +++ b/Documentation/kernel-parameters.txt > > > > > @@ -2385,6 +2385,9 @@ and is between 256 and 4096 characters. It is defined in the file > > > > > improve throughput, but will also increase the > > > > > amount of memory reserved for use by the client. > > > > > > > > > > + swapaccount [KNL] Enable accounting of swap in memory resource > > > > > + controller. (See Documentation/cgroups/memory.txt) > > > > > > > > So we have swapaccount and noswapaccount. Ho hum, "swapaccount=[1|0]" > > > > would have been better. > > > > > > > I suggested to keep "noswapaccount" for compatibility. > > > If you and other guys don't like having two parameters, I don't stick to > > > the old parameter. > > > > > > > Yes, we're stuck with the old one now. > > > > But we should note that "foo=[0|1]" is superior to "foo" and "nofoo". > > Even if we didn't initially intend to add "nofoo". > > > I see. > > Michal-san, could you update your patch to use "swapaccount=[1|0]" ? I have noticed that Andrew has already taken the last version of the patch for -mm tree. Should I still rework it to change swapaccount to swapaccount=0|1 resp. true|false? > > Thanks, > Daisuke Nishimura. -- Michal Hocko L3 team SUSE LINUX s.r.o. Lihovarska 1060/12 190 00 Praha 9 Czech Republic