From owner-cvs-src-old@FreeBSD.ORG  Mon Dec 20 22:49:59 2010
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 92A1A1065670
	for <cvs-src-old@freebsd.org>; Mon, 20 Dec 2010 22:49:59 +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 7FB618FC14
	for <cvs-src-old@freebsd.org>; Mon, 20 Dec 2010 22:49:59 +0000 (UTC)
Received: from repoman.freebsd.org (localhost [127.0.0.1])
	by repoman.freebsd.org (8.14.4/8.14.4) with ESMTP id oBKMnxYu074871
	for <cvs-src-old@freebsd.org>; Mon, 20 Dec 2010 22:49:59 GMT
	(envelope-from alc@repoman.freebsd.org)
Received: (from svn2cvs@localhost)
	by repoman.freebsd.org (8.14.4/8.14.4/Submit) id oBKMnx35074870
	for cvs-src-old@freebsd.org; Mon, 20 Dec 2010 22:49:59 GMT
	(envelope-from alc@repoman.freebsd.org)
Message-Id: <201012202249.oBKMnx35074870@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: Mon, 20 Dec 2010 22:49:31 +0000 (UTC)
To: cvs-src-old@freebsd.org
X-FreeBSD-CVS-Branch: HEAD
Subject: cvs commit: src/sys/dev/cxgb/ulp/tom cxgb_vm.c src/sys/kern
 sys_process.c src/sys/vm vm_extern.h vm_fault.c vm_map.h
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: Mon, 20 Dec 2010 22:49:59 -0000

alc         2010-12-20 22:49:31 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/cxgb/ulp/tom cxgb_vm.c 
    sys/kern             sys_process.c 
    sys/vm               vm_extern.h vm_fault.c vm_map.h 
  Log:
  SVN rev 216604 on 2010-12-20 22:49:31Z by alc
  
  Introduce vm_fault_hold() and use it to (1) eliminate a long-standing race
  condition in proc_rwmem() and to (2) simplify the implementation of the
  cxgb driver's vm_fault_hold_user_pages().  Specifically, in proc_rwmem()
  the requested read or write could fail because the targeted page could be
  reclaimed between the calls to vm_fault() and vm_page_hold().
  
  In collaboration with:  kib@
  MFC after:      6 weeks
  
  Revision  Changes    Path
  1.8       +4 -13     src/sys/dev/cxgb/ulp/tom/cxgb_vm.c
  1.172     +17 -63    src/sys/kern/sys_process.c
  1.96      +2 -0      src/sys/vm/vm_extern.h
  1.284     +18 -5     src/sys/vm/vm_fault.c
  1.140     +1 -0      src/sys/vm/vm_map.h