From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Wed, 2 Apr 2003 18:46:51 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Wed, 2 Apr 2003 18:46:51 -0500 Received: from pixpat.austin.ibm.com ([192.35.232.241]:38101 "EHLO baldur.austin.ibm.com") by vger.kernel.org with ESMTP id ; Wed, 2 Apr 2003 18:46:50 -0500 Date: Wed, 02 Apr 2003 17:58:08 -0600 From: Dave McCracken To: Andrew Morton cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2.5.66-mm2] Fix page_convert_anon locking issues Message-ID: <116640000.1049327888@baldur.austin.ibm.com> In-Reply-To: <20030402155220.651a1005.akpm@digeo.com> References: <8910000.1049303582@baldur.austin.ibm.com> <20030402132939.647c74a6.akpm@digeo.com> <80300000.1049320593@baldur.austin.ibm.com> <20030402150903.21765844.akpm@digeo.com> <102170000.1049325787@baldur.austin.ibm.com> <20030402153845.0770ef54.akpm@digeo.com> <110950000.1049326945@baldur.austin.ibm.com> <20030402155220.651a1005.akpm@digeo.com> X-Mailer: Mulberry/2.2.1 (Linux/x86) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --On Wednesday, April 02, 2003 15:52:20 -0800 Andrew Morton wrote: > hmmmm. It also probably needs both compiler barriers and memory barriers. > > It does give me creepy feelings. I worry that because nobody uses > remap_file_pages() yet, we will hit 2.6.25 before discovering that we have > fundamental VM locking problems which affect $major$ applications. It's looking more and more like we should use your other suggestion. It's definitely simpler if we can make it failsafe. I'll code it up tomorrow. Dave ====================================================================== Dave McCracken IBM Linux Base Kernel Team 1-512-838-3059 dmccr@us.ibm.com T/L 678-3059