From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 8 Mar 2002 10:31:44 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 8 Mar 2002 10:31:34 -0500 Received: from ns1.fast.net.uk ([212.42.162.2]:6404 "EHLO t2.fast.net.uk") by vger.kernel.org with ESMTP id ; Fri, 8 Mar 2002 10:31:20 -0500 Message-ID: <3C88D930.2080308@htec.demon.co.uk> Date: Fri, 08 Mar 2002 15:30:56 +0000 From: Christopher Quinn User-Agent: Mozilla/5.0 (compatible; MSIE5.5; Windows 98; X-Accept-Language: en-us MIME-Version: 1.0 To: Alan Cox CC: linux-kernel@vger.kernel.org Subject: Re: Interprocess shared memory .... but file backed? In-Reply-To: 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 Alan Cox wrote: >>However as far as I can tell this is anonymous memory only. >>Are there any options if one initially maps a disk file via >>mmap (in particular MAP_PRIVATE) for sharing that vm, such >> > > well MAP_PRIVATE is "dont share" so not with that 8) > Use MAP_SHARED and you'll get what you want > > Certainly true! But MAP_SHARED gives uncontrolled flush of dirty data - so that's out for me. I only want 'privacy' to extend to the right to make changes permanent at my own discretion. Chris Q. -- rgrds, Chris Quinn