From owner-freebsd-current@FreeBSD.ORG  Wed Apr 23 20:33:05 2008
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 33633106564A
	for <freebsd-current@freebsd.org>; Wed, 23 Apr 2008 20:33:05 +0000 (UTC)
	(envelope-from rmtodd@ichotolot.servalan.com)
Received: from mx2.synetsystems.com (mx2.synetsystems.com [76.10.206.15])
	by mx1.freebsd.org (Postfix) with ESMTP id EB9E38FC17
	for <freebsd-current@freebsd.org>; Wed, 23 Apr 2008 20:33:04 +0000 (UTC)
	(envelope-from rmtodd@ichotolot.servalan.com)
Received: by mx2.synetsystems.com (Postfix, from userid 66)
	id 275245D7; Wed, 23 Apr 2008 16:15:43 -0400 (EDT)
Received: from rmtodd by servalan.servalan.com with local (Exim 4.68 (FreeBSD))
	(envelope-from <rmtodd@ichotolot.servalan.com>)
	id 1Joj34-000LOT-TO; Wed, 23 Apr 2008 12:46:26 -0500
To: Andrew Gallatin <gallatin@cs.duke.edu>
References: <18447.17658.759349.720175@grasshopper.cs.duke.edu>
	<480F4972.20609@FreeBSD.org>
	<18447.19594.892539.640373@grasshopper.cs.duke.edu>
From: Richard Todd <rmtodd@ichotolot.servalan.com>
Date: Wed, 23 Apr 2008 12:44:49 -0500
In-Reply-To: <servalan.mailinglist.fbsd-current/18447.19594.892539.640373@grasshopper.cs.duke.edu>
	(Andrew Gallatin's message of "Wed,
	23 Apr 2008 10:49:23 -0400 (EDT)")
Message-ID: <x7ej8wpisu.fsf@ichotolot.servalan.com>
User-Agent: Gnus/5.1008 (Gnus v5.10.8) XEmacs/21.4.21 (berkeley-unix)
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Cc: freebsd-current@FreeBSD.org
Subject: Re: ZFS file caching question
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>, 
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 23 Apr 2008 20:33:05 -0000

Andrew Gallatin <gallatin@cs.duke.edu> writes:

> Kris Kennaway writes:
>  > Andrew Gallatin wrote:
>  > > Hmm.. Could this be the cause of the problems with ZFS and mmap'ed files?
>  > 
>  > What problems do you mean?  There were coherency problems but I think 
>  > they were fixed.
>
> The last I saw about this on -current was:
> http://lists.freebsd.org/pipermail/freebsd-current/2008-February/083396.html
>
> This seemed to terminate with people disabling mmap in the
> applications, not with a fix to ZFS.  Maybe I missed a commit..

Someone else recently asked me in email about the mmap bug I reported in
the above thread, so I recently ran a retest; the bug was still there as of
Apr 7th -CURRENT.