From owner-cvs-all@FreeBSD.ORG  Mon Oct 18 08:11:59 2004
Return-Path: <owner-cvs-all@FreeBSD.ORG>
Delivered-To: cvs-all@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP
	id 926A416A4CE; Mon, 18 Oct 2004 08:11:59 +0000 (GMT)
Received: from repoman.freebsd.org (repoman.freebsd.org [216.136.204.115])
	by mx1.FreeBSD.org (Postfix) with ESMTP
	id 6E95443D45; Mon, 18 Oct 2004 08:11:59 +0000 (GMT)
	(envelope-from alc@FreeBSD.org)
Received: from repoman.freebsd.org (localhost [127.0.0.1])
	by repoman.freebsd.org (8.12.11/8.12.11) with ESMTP id i9I8Bx2D059270;
	Mon, 18 Oct 2004 08:11:59 GMT
	(envelope-from alc@repoman.freebsd.org)
Received: (from alc@localhost)
	by repoman.freebsd.org (8.12.11/8.12.11/Submit) id i9I8Bx7T059269;
	Mon, 18 Oct 2004 08:11:59 GMT
	(envelope-from alc)
Message-Id: <200410180811.i9I8Bx7T059269@repoman.freebsd.org>
From: Alan Cox <alc@FreeBSD.org>
Date: Mon, 18 Oct 2004 08:11:59 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org,
	cvs-all@FreeBSD.org
X-FreeBSD-CVS-Branch: HEAD
Subject: cvs commit: src/sys/vm vm_page.c
X-BeenThere: cvs-all@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: CVS commit messages for the entire tree <cvs-all.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-all>,
	<mailto:cvs-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/cvs-all>
List-Post: <mailto:cvs-all@freebsd.org>
List-Help: <mailto:cvs-all-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-all>,
	<mailto:cvs-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 18 Oct 2004 08:11:59 -0000

alc         2004-10-18 08:11:59 UTC

  FreeBSD src repository

  Modified files:
    sys/vm               vm_page.c 
  Log:
  Correct two errors in PG_BUSY management by vm_page_cowfault().  Both
  errors are in rarely executed paths.
  1. Each time the retry_alloc path is taken, the PG_BUSY must be set again.
     Otherwise vm_page_remove() panics.
  2. There is no need to set PG_BUSY on the newly allocated page before
     freeing it.  The page already has PG_BUSY set by vm_page_alloc().
     Setting it again could cause an assertion failure.
  
  MFC after: 2 weeks
  
  Revision  Changes    Path
  1.293     +1 -2      src/sys/vm/vm_page.c