From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arjan van de Ven Subject: Re: [PATCH v2 2/2] relatime: Allow making relatime the default behaviour Date: Sat, 29 Nov 2008 12:55:29 -0800 Message-ID: <20081129125529.0198e973@infradead.org> References: <20081126195457.GA3541@srcf.ucam.org> <20081126195824.GB3541@srcf.ucam.org> <492DD035.5020705@oracle.com> <20081127150126.GA20941@srcf.ucam.org> <20081127150341.GB20941@srcf.ucam.org> <20081127170345.GA14991@infradead.org> <20081129002419.abfd2504.akpm@linux-foundation.org> <20081129130308.GX25548@parisc-linux.org> <20081129135742.GC11959@logfs.org> <20081129185645.GA20194@shareable.org> <20081129190245.GA21502@srcf.ucam.org> <20081129123220.67fd1e6a.akpm@linux-foundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: Matthew Garrett , Jamie Lokier , =?UTF-8?B?SsO2cm4=?= Engel , Matthew Wilcox , Christoph Hellwig , Randy Dunlap , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, mingo@redhat.com, val.henson@gmail.com To: Andrew Morton Return-path: Received: from casper.infradead.org ([85.118.1.10]:39182 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751270AbYK2UzE (ORCPT ); Sat, 29 Nov 2008 15:55:04 -0500 In-Reply-To: <20081129123220.67fd1e6a.akpm@linux-foundation.org> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: On Sat, 29 Nov 2008 12:32:20 -0800 Andrew Morton wrote: > > The standard, usual, expected way of modifying a filesystem's > behaviour is via mount options. This is also quite flexible. > > Is there some extraordinary reason why the standard interface is not > to be used here? let me ask this: Has anmyone ever had the desire to change the default of 1 day of relatime? Ever? Maybe this code isn't really needed if nobody even thought about changing it. Clearly there are two extremes (always and never) for which we have atime/noatime. I'm not sure we need to have any smarts in the middle point for the user to change. If this is something people wish to see tuned better, I would rather spend the code size in trying to get it autotuning. -- Arjan van de Ven Intel Open Source Technology Centre For development, discussion and tips for power savings, visit http://www.lesswatts.org