Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932619AbYARWz5 (ORCPT ); Fri, 18 Jan 2008 17:55:57 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1762575AbYARWzs (ORCPT ); Fri, 18 Jan 2008 17:55:48 -0500 Received: from mx1.redhat.com ([66.187.233.31]:50947 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761186AbYARWzr (ORCPT ); Fri, 18 Jan 2008 17:55:47 -0500 Date: Fri, 18 Jan 2008 17:54:50 -0500 From: Rik van Riel To: Linus Torvalds Cc: Ingo Oeser , Miklos Szeredi , peterz@infradead.org, salikhmetov@gmail.com, linux-mm@kvack.org, jakob@unthought.net, linux-kernel@vger.kernel.org, valdis.kletnieks@vt.edu, ksm@42.dk, staubach@redhat.com, jesper.juhl@gmail.com, akpm@linux-foundation.org, protasnb@gmail.com, r.e.wolff@bitwizard.nl, hidave.darkstar@gmail.com, hch@infradead.org Subject: Re: [PATCH -v6 2/2] Updating ctime and mtime for memory-mapped files Message-ID: <20080118175450.715ded60@bree.surriel.com> In-Reply-To: References: <12006091182260-git-send-email-salikhmetov@gmail.com> <200801182332.02945.ioe-lkml@rameria.de> Organization: Red Hat, Inc. X-Mailer: Claws Mail 3.0.2 (GTK+ 2.10.4; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 909 Lines: 23 On Fri, 18 Jan 2008 14:47:33 -0800 (PST) Linus Torvalds wrote: > - keep it simple. Let's face it, Linux has never ever given those > guarantees before, and it's not is if anybody has really cared. Even > now, the issue seems to be more about paper standards conformance than > anything else. There is one issue which is way more than just standards conformance. When a program changes file data through mmap(), at some point the mtime needs to be update so that backup programs know to back up the new version of the file. Backup programs not seeing an updated mtime is a really big deal. -- All rights reversed. -- 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/