From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264000AbTJ1P07 (ORCPT ); Tue, 28 Oct 2003 10:26:59 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S264001AbTJ1P07 (ORCPT ); Tue, 28 Oct 2003 10:26:59 -0500 Received: from zcars0m9.nortelnetworks.com ([47.129.242.157]:50915 "EHLO zcars0m9.nortelnetworks.com") by vger.kernel.org with ESMTP id S264000AbTJ1P06 (ORCPT ); Tue, 28 Oct 2003 10:26:58 -0500 Message-ID: <3F9E8AB3.4070305@nortelnetworks.com> Date: Tue, 28 Oct 2003 10:26:43 -0500 X-Sybari-Space: 00000000 00000000 00000000 00000000 From: Chris Friesen User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.8) Gecko/20020204 X-Accept-Language: en-us MIME-Version: 1.0 To: Helge Hafting Cc: Amir Hermelin , linux-kernel@vger.kernel.org Subject: Re: how do file-mapped (mmapped) pages become dirty? References: <006901c39d50$0b1313d0$2501a8c0@CARTMAN> <3F9E84A5.2060500@aitel.hist.no> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Helge Hafting wrote: > Amir Hermelin wrote: >> What function is responsible for this setting? And when will the page be >> written back to disk (i.e. where's the flusher located)? >> > When there's memory pressure, or a sync. Note however that you need an msync() -- fsync() and fdatasync() do not catch changes to mmapped pages. Chris -- Chris Friesen | MailStop: 043/33/F10 Nortel Networks | work: (613) 765-0557 3500 Carling Avenue | fax: (613) 765-2986 Nepean, ON K2H 8E9 Canada | email: cfriesen@nortelnetworks.com