Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761494AbXHEUgW (ORCPT ); Sun, 5 Aug 2007 16:36:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753632AbXHEUgP (ORCPT ); Sun, 5 Aug 2007 16:36:15 -0400 Received: from pentafluge.infradead.org ([213.146.154.40]:34683 "EHLO pentafluge.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753789AbXHEUgO (ORCPT ); Sun, 5 Aug 2007 16:36:14 -0400 Date: Sun, 5 Aug 2007 21:36:02 +0100 From: Christoph Hellwig To: J??rn Engel Cc: Ingo Molnar , Jeff Garzik , Linus Torvalds , Peter Zijlstra , linux-mm@kvack.org, Linux Kernel Mailing List , miklos@szeredi.hu, akpm@linux-foundation.org, neilb@suse.de, dgc@sgi.com, tomoki.sekiyama.qu@hitachi.com, nikita@clusterfs.com, trond.myklebust@fys.uio.no, yingchao.zhou@gmail.com, richard@rsk.demon.co.uk, david@lang.hm Subject: Re: [PATCH 00/23] per device dirty throttling -v8 Message-ID: <20070805203602.GB25107@infradead.org> Mail-Followup-To: Christoph Hellwig , J??rn Engel , Ingo Molnar , Jeff Garzik , Linus Torvalds , Peter Zijlstra , linux-mm@kvack.org, Linux Kernel Mailing List , miklos@szeredi.hu, akpm@linux-foundation.org, neilb@suse.de, dgc@sgi.com, tomoki.sekiyama.qu@hitachi.com, nikita@clusterfs.com, trond.myklebust@fys.uio.no, yingchao.zhou@gmail.com, richard@rsk.demon.co.uk, david@lang.hm References: <20070804070737.GA940@elte.hu> <20070804103347.GA1956@elte.hu> <20070804163733.GA31001@elte.hu> <46B4C0A8.1000902@garzik.org> <20070804191205.GA24723@lazybastard.org> <20070804192130.GA25346@elte.hu> <20070804192615.GA25600@lazybastard.org> <20070804194259.GA25753@lazybastard.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070804194259.GA25753@lazybastard.org> User-Agent: Mutt/1.4.2.3i X-SRS-Rewrite: SMTP reverse-path rewritten from by pentafluge.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1111 Lines: 23 On Sat, Aug 04, 2007 at 09:42:59PM +0200, J??rn Engel wrote: > On Sat, 4 August 2007 21:26:15 +0200, J??rn Engel wrote: > > > > Given the choice between only "atime" and "noatime" I'd agree with you. > > Heck, I use it myself. But "relatime" seems to combine the best of both > > worlds. It currently just suffers from mount not supporting it in any > > relevant distro. > > And here is a completely untested patch to enable it by default. Ingo, > can you see how good this fares compared to "atime" and > "noatime,nodiratime"? Umm, no f**king way. atime selection is 100% policy and belongs into userspace. Add to that the problem that we can't actually re-enable atimes because of the way the vfs-level mount flags API is designed. Instead of doing such a fugly kernel patch just talk to the handfull of distributions that matter to update their defaults. - 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/