From owner-cvs-src@FreeBSD.ORG Tue Nov 8 06:43:25 2005 Return-Path: X-Original-To: cvs-src@FreeBSD.org Delivered-To: cvs-src@FreeBSD.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id E890716A41F for ; Tue, 8 Nov 2005 06:43:25 +0000 (GMT) (envelope-from silby@silby.com) Received: from relay01.pair.com (relay01.pair.com [209.68.5.15]) by mx1.FreeBSD.org (Postfix) with SMTP id 8BBFB43D48 for ; Tue, 8 Nov 2005 06:43:24 +0000 (GMT) (envelope-from silby@silby.com) Received: (qmail 65891 invoked from network); 8 Nov 2005 06:43:23 -0000 Received: from unknown (HELO localhost) (unknown) by unknown with SMTP; 8 Nov 2005 06:43:23 -0000 X-pair-Authenticated: 209.68.2.70 Date: Tue, 8 Nov 2005 00:43:21 -0600 (CST) From: Mike Silbersack To: Alan Cox In-Reply-To: <200511080633.jA86XMXm062174@repoman.freebsd.org> Message-ID: <20051108004258.Q31106@odysseus.silby.com> References: <200511080633.jA86XMXm062174@repoman.freebsd.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/vm vm_page.c X-BeenThere: cvs-src@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 08 Nov 2005 06:43:26 -0000 On Tue, 8 Nov 2005, Alan Cox wrote: > If a physical page is mapped by two or more virtual addresses, transmitted > by the zero-copy sockets method, and written to before the transmission > completes, we need to destroy all of the existing mappings to the page, > not just the one that we fault on. Otherwise, the mappings will no longer > be to the same page and changes made through one of the mappings will not > be visible through the others. These kinds of changes could REALLY use regression tests, if possible. Mike "Silby" Silbersack