Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764800AbXHDUMR (ORCPT ); Sat, 4 Aug 2007 16:12:17 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752275AbXHDUMH (ORCPT ); Sat, 4 Aug 2007 16:12:07 -0400 Received: from mx3.mail.elte.hu ([157.181.1.138]:53456 "EHLO mx3.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751121AbXHDUME (ORCPT ); Sat, 4 Aug 2007 16:12:04 -0400 Date: Sat, 4 Aug 2007 22:11:42 +0200 From: Ingo Molnar To: Linus Torvalds Cc: J?rn Engel , Jeff Garzik , 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: <20070804201142.GA2545@elte.hu> References: <20070804103347.GA1956@elte.hu> <20070804163733.GA31001@elte.hu> <46B4C0A8.1000902@garzik.org> <20070804191205.GA24723@lazybastard.org> <20070804192130.GA25346@elte.hu> <20070804192615.GA25600@lazybastard.org> <20070804200038.GA31017@elte.hu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20070804200038.GA31017@elte.hu> User-Agent: Mutt/1.5.14 (2007-02-12) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.1.7-deb -1.0 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 704 Lines: 23 * Ingo Molnar wrote: > +#ifdef CONFIG_FASTATIME > + if (!(flags & (MNT_NOATIME | MNT_NODIRATIME))) > + mnt_flags |= MNT_RELATIME; > +#endif btw., "relatime" does not seem to make much of a difference, if i do this: ls -l x ; sync on a "relatime" mounted filesystem ('x' is a regular file), then there's disk IO for every such command. Only if i mount it noatime,nodiratime do i get zero disk IO. Or my patch is wrong somehow. Ingo - 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/