From owner-svn-src-head@FreeBSD.ORG  Fri Feb 20 00:25:07 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 E55E0106566B;
	Fri, 20 Feb 2009 00:25:07 +0000 (UTC)
	(envelope-from scottl@samsco.org)
Received: from pooker.samsco.org (pooker.samsco.org [168.103.85.57])
	by mx1.freebsd.org (Postfix) with ESMTP id 993B48FC16;
	Fri, 20 Feb 2009 00:25:07 +0000 (UTC)
	(envelope-from scottl@samsco.org)
Received: from phobos.local ([192.168.254.200]) (authenticated bits=0)
	by pooker.samsco.org (8.14.2/8.14.2) with ESMTP id n1K0P4Lu011485;
	Thu, 19 Feb 2009 17:25:04 -0700 (MST)
	(envelope-from scottl@samsco.org)
Message-ID: <499DF860.8020903@samsco.org>
Date: Thu, 19 Feb 2009 17:25:04 -0700
From: Scott Long <scottl@samsco.org>
User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X; en-US;
	rv:1.8.1.13) Gecko/20080313 SeaMonkey/1.1.9
MIME-Version: 1.0
To: John Baldwin <jhb@FreeBSD.org>
References: <200902192218.n1JMI1HF009245@svn.freebsd.org>
In-Reply-To: <200902192218.n1JMI1HF009245@svn.freebsd.org>
X-Enigmail-Version: 0.95.6
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
X-Spam-Status: No, score=-4.4 required=3.8 tests=ALL_TRUSTED,BAYES_00
	autolearn=ham version=3.1.8
X-Spam-Checker-Version: SpamAssassin 3.1.8 (2007-02-13) on pooker.samsco.org
Cc: svn-src-head@FreeBSD.org, svn-src-all@FreeBSD.org,
	src-committers@FreeBSD.org
Subject: Re: svn commit: r188832 - head/sys/nfsclient
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: Fri, 20 Feb 2009 00:25:08 -0000

John Baldwin wrote:
> Author: jhb
> Date: Thu Feb 19 22:18:00 2009
> New Revision: 188832
> URL: http://svn.freebsd.org/changeset/base/188832
> 
> Log:
>   When fetching attributes for a file for NFSv3 mounts, do not perform an
>   opportunistic ACCESS RPC to populate both the access and attribute caches
>   of the file and instead always use a GETATTR RPC.  On many modern NFS
>   servers, an ACCESS RPC is much more expensive to service than a GETATTR
>   RPC.
>   

Not too long ago, this was a very useful and important optimization. 
Can you say which servers this applies to?  Could it have been made an
option instead of outright deleted?

Scott