From owner-cvs-src-old@FreeBSD.ORG  Sat May  9 08:31:00 2009
Return-Path: <owner-cvs-src-old@FreeBSD.ORG>
Delivered-To: cvs-src-old@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id EA60A106567E
	for <cvs-src-old@freebsd.org>; Sat,  9 May 2009 08:31:00 +0000 (UTC)
	(envelope-from alc@FreeBSD.org)
Received: from repoman.freebsd.org (repoman.freebsd.org
	[IPv6:2001:4f8:fff6::29])
	by mx1.freebsd.org (Postfix) with ESMTP id D831D8FC23
	for <cvs-src-old@freebsd.org>; Sat,  9 May 2009 08:31:00 +0000 (UTC)
	(envelope-from alc@FreeBSD.org)
Received: from repoman.freebsd.org (localhost [127.0.0.1])
	by repoman.freebsd.org (8.14.3/8.14.3) with ESMTP id n498V0uc009441
	for <cvs-src-old@freebsd.org>; Sat, 9 May 2009 08:31:00 GMT
	(envelope-from alc@repoman.freebsd.org)
Received: (from svn2cvs@localhost)
	by repoman.freebsd.org (8.14.3/8.14.3/Submit) id n498V0pr009440
	for cvs-src-old@freebsd.org; Sat, 9 May 2009 08:31:00 GMT
	(envelope-from alc@repoman.freebsd.org)
Message-Id: <200905090831.n498V0pr009440@repoman.freebsd.org>
X-Authentication-Warning: repoman.freebsd.org: svn2cvs set sender to
	alc@repoman.freebsd.org using -f
From: Alan Cox <alc@FreeBSD.org>
Date: Sat, 9 May 2009 08:30:44 +0000 (UTC)
To: cvs-src-old@freebsd.org
X-FreeBSD-CVS-Branch: HEAD
Subject: cvs commit: src/sys/vm vnode_pager.c
X-BeenThere: cvs-src-old@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: **OBSOLETE** CVS commit messages for the src tree
	<cvs-src-old.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-src-old>,
	<mailto:cvs-src-old-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/cvs-src-old>
List-Post: <mailto:cvs-src-old@freebsd.org>
List-Help: <mailto:cvs-src-old-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-src-old>,
	<mailto:cvs-src-old-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 09 May 2009 08:31:01 -0000

alc         2009-05-09 08:30:44 UTC

  FreeBSD src repository

  Modified files:
    sys/vm               vnode_pager.c 
  Log:
  SVN rev 191935 on 2009-05-09 08:30:44Z by alc
  
  Fix a race involving vnode_pager_input_smlfs().  Specifically, in the case
  that vnode_pager_input_smlfs() zeroes the page, it should not mark the page
  as valid until after the page is zeroed.  Otherwise, the page could be
  mapped for read access (e.g., by vm_map_pmap_enter()) before the page is
  zeroed.  Reviewed by: tegge
  
  Eliminate gratuitous clearing of the page's dirty mask by
  vnode_pager_input_smlfs().  Instead, assert that the page is clean.
  Reviewed by: tegge
  
  Eliminate some blank lines.
  
  Eliminate pointless calls to pmap_clear_modify() and vm_page_undirty() from
  vnode_pager_input_old().  The page is not mapped.  Therefore, it cannot have
  any page table entries that are modified.
  
  Eliminate an incorrect comment from vnode_pager_generic_getpages().
  
  Revision  Changes    Path
  1.253     +10 -23    src/sys/vm/vnode_pager.c