From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Thu, 3 Apr 2003 11:28:27 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Thu, 3 Apr 2003 11:28:26 -0500 Received: from pixpat.austin.ibm.com ([192.35.232.241]:56852 "EHLO baldur.austin.ibm.com") by vger.kernel.org with ESMTP id ; Thu, 3 Apr 2003 11:28:26 -0500 Date: Thu, 03 Apr 2003 10:39:37 -0600 From: Dave McCracken To: Hugh Dickins cc: Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 2.5.66-mm2] Fix page_convert_anon locking issues Message-ID: <23590000.1049387977@baldur.austin.ibm.com> In-Reply-To: References: 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 Thursday, April 03, 2003 17:33:31 +0100 Hugh Dickins wrote: > No: see the various checks on page_count(page) in vmscan.c: > though page_convert_anon temporarily leaves a page with neither > mapcount nor the right number of pte pointers, page_count is unaffected. Oh, hmm... Ok, so it's safe... This could have some interesting implications all around. Dave ====================================================================== Dave McCracken IBM Linux Base Kernel Team 1-512-838-3059 dmccr@us.ibm.com T/L 678-3059