From owner-svn-src-head@FreeBSD.ORG  Sat May 23 18:25:11 2009
Return-Path: <owner-svn-src-head@FreeBSD.ORG>
Delivered-To: svn-src-head@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 8E2DB106564A;
	Sat, 23 May 2009 18:25:11 +0000 (UTC) (envelope-from alc@FreeBSD.org)
Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c])
	by mx1.freebsd.org (Postfix) with ESMTP id 7CE048FC16;
	Sat, 23 May 2009 18:25:11 +0000 (UTC) (envelope-from alc@FreeBSD.org)
Received: from svn.freebsd.org (localhost [127.0.0.1])
	by svn.freebsd.org (8.14.3/8.14.3) with ESMTP id n4NIPBUr063333;
	Sat, 23 May 2009 18:25:11 GMT (envelope-from alc@svn.freebsd.org)
Received: (from alc@localhost)
	by svn.freebsd.org (8.14.3/8.14.3/Submit) id n4NIPBZN063332;
	Sat, 23 May 2009 18:25:11 GMT (envelope-from alc@svn.freebsd.org)
Message-Id: <200905231825.n4NIPBZN063332@svn.freebsd.org>
From: Alan Cox <alc@FreeBSD.org>
Date: Sat, 23 May 2009 18:25:11 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
	svn-src-head@freebsd.org
X-SVN-Group: head
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Cc: 
Subject: svn commit: r192657 - head/sys/fs/nwfs
X-BeenThere: svn-src-head@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: SVN commit messages for the src tree for head/-current
	<svn-src-head.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-head>,
	<mailto:svn-src-head-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-head>
List-Post: <mailto:svn-src-head@freebsd.org>
List-Help: <mailto:svn-src-head-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-head>,
	<mailto:svn-src-head-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 23 May 2009 18:25:11 -0000

Author: alc
Date: Sat May 23 18:25:11 2009
New Revision: 192657
URL: http://svn.freebsd.org/changeset/base/192657

Log:
  Eliminate the unnecessary clearing of a page's dirty bits from
  nwfs_getpages().

Modified:
  head/sys/fs/nwfs/nwfs_io.c

Modified: head/sys/fs/nwfs/nwfs_io.c
==============================================================================
--- head/sys/fs/nwfs/nwfs_io.c	Sat May 23 18:18:06 2009	(r192656)
+++ head/sys/fs/nwfs/nwfs_io.c	Sat May 23 18:25:11 2009	(r192657)
@@ -463,10 +463,13 @@ nwfs_getpages(ap)
 
 		if (nextoff <= size) {
 			m->valid = VM_PAGE_BITS_ALL;
-			m->dirty = 0;
+			KASSERT(m->dirty == 0,
+			    ("nwfs_getpages: page %p is dirty", m));
 		} else {
 			int nvalid = ((size + DEV_BSIZE - 1) - toff) & ~(DEV_BSIZE - 1);
-			vm_page_set_validclean(m, 0, nvalid);
+			vm_page_set_valid(m, 0, nvalid);
+			KASSERT((m->dirty & vm_page_bits(0, nvalid)) == 0,
+			    ("nwfs_getpages: page %p is dirty", m));
 		}
 
 		if (i != ap->a_reqpage) {