From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 18 Jan 2008 17:54:50 -0500 From: Rik van Riel 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> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: 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 List-ID: 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, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org