From owner-freebsd-current@FreeBSD.ORG  Thu Oct 20 15:07:41 2005
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
X-Original-To: current@FreeBSD.org
Delivered-To: freebsd-current@FreeBSD.ORG
Received: from green.homeunix.org (freefall.freebsd.org [216.136.204.21])
	by hub.freebsd.org (Postfix) with ESMTP id 641D916A41F;
	Thu, 20 Oct 2005 15:07:41 +0000 (GMT)
	(envelope-from green@green.homeunix.org)
Received: from green.homeunix.org (green@localhost [127.0.0.1])
	by green.homeunix.org (8.13.4/8.13.1) with ESMTP id j9KF7eKI067505;
	Thu, 20 Oct 2005 11:07:40 -0400 (EDT)
	(envelope-from green@green.homeunix.org)
Received: (from green@localhost)
	by green.homeunix.org (8.13.4/8.13.1/Submit) id j9KF7d0X067504;
	Thu, 20 Oct 2005 11:07:39 -0400 (EDT) (envelope-from green)
Date: Thu, 20 Oct 2005 11:07:39 -0400
From: Brian Fundakowski Feldman <green@FreeBSD.org>
To: Poul-Henning Kamp <phk@phk.freebsd.dk>
Message-ID: <20051020150739.GB43031@green.homeunix.org>
References: <20051020063303.GA19624@garage.freebsd.pl>
	<8321.1129791093@critter.freebsd.dk>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <8321.1129791093@critter.freebsd.dk>
User-Agent: Mutt/1.5.11
Cc: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net>,
	Pawel Jakub Dawidek <pjd@FreeBSD.org>,
	FreeBSD current mailing list <current@FreeBSD.org>
Subject: Re: mount memory modified after free
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: Thu, 20 Oct 2005 15:07:41 -0000

On Thu, Oct 20, 2005 at 08:51:33AM +0200, Poul-Henning Kamp wrote:
> In message <20051020063303.GA19624@garage.freebsd.pl>, Pawel Jakub Dawidek writ
> es:
> 
> >Bascially there is only one place to store mount-point's
> >vnode in device structure (IIRC) and if you mount the same provider twice,
> >it will be overwritten and you'll not be able to unmount first file system
> >without panicing.
> 
> There is more, you also need to cope with the UFS snapshot data hung
> off the cdev etc.

There's UFS snapshot data for read-only mounts?

-- 
Brian Fundakowski Feldman                           \'[ FreeBSD ]''''''''''\
  <> green@FreeBSD.org                               \  The Power to Serve! \
 Opinions expressed are my own.                       \,,,,,,,,,,,,,,,,,,,,,,\