From owner-cvs-src-old@FreeBSD.ORG  Tue Nov 16 15:54:03 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 CB6A21065723
	for <cvs-src-old@freebsd.org>; Tue, 16 Nov 2010 15:54:03 +0000 (UTC)
	(envelope-from avg@FreeBSD.org)
Received: from repoman.freebsd.org (repoman.freebsd.org
	[IPv6:2001:4f8:fff6::29])
	by mx1.freebsd.org (Postfix) with ESMTP id B8D7E8FC1B
	for <cvs-src-old@freebsd.org>; Tue, 16 Nov 2010 15:54:03 +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 oAGFs3B7055059
	for <cvs-src-old@freebsd.org>; Tue, 16 Nov 2010 15:54:03 GMT
	(envelope-from avg@repoman.freebsd.org)
Received: (from svn2cvs@localhost)
	by repoman.freebsd.org (8.14.4/8.14.4/Submit) id oAGFs3E6055058
	for cvs-src-old@freebsd.org; Tue, 16 Nov 2010 15:54:03 GMT
	(envelope-from avg@repoman.freebsd.org)
Message-Id: <201011161554.oAGFs3E6055058@repoman.freebsd.org>
X-Authentication-Warning: repoman.freebsd.org: svn2cvs set sender to
	avg@repoman.freebsd.org using -f
From: Andriy Gapon <avg@FreeBSD.org>
Date: Tue, 16 Nov 2010 15:53:44 +0000 (UTC)
To: cvs-src-old@freebsd.org
X-FreeBSD-CVS-Branch: HEAD
Subject: cvs commit: src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs
	zfs_vnops.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: Tue, 16 Nov 2010 15:54:03 -0000

avg         2010-11-16 15:53:44 UTC

  FreeBSD src repository

  Modified files:
    sys/cddl/contrib/opensolaris/uts/common/fs/zfs zfs_vnops.c 
  Log:
  SVN rev 215401 on 2010-11-16 15:53:44Z by avg
  
  zfs+sendfile: populate all requested pages, not just those already cached
  
  kern_sendfile() uses vm_rdwr() to read-ahead blocks of data to populate
  page cache.  When sendfile stumbles upon a page that is not populated
  yet, it sends out all the mbufs that it collected so far.  This
  resulted in very poor performance with ZFS when file data is not in the
  page cache, because ZFS vop_read for UIO_NOCOPY case populated only
  those pages that are already in cache, but not valid.  Which means that
  most of the time it populated only the first requested page in the
  described above scenario.
  
  Reported by:    Alexander Zagrebin <alexz@visp.ru>
  Tested by:      Alexander Zagrebin <alexz@visp.ru>,
                  Artemiev Igor <ai@kliksys.ru>
  MFC after:      12 days
  
  Revision  Changes    Path
  1.85      +14 -4     src/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c