From owner-freebsd-current  Fri Feb  7  9:23:46 2003
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP
	id 8F81837B401; Fri,  7 Feb 2003 09:23:45 -0800 (PST)
Received: from angelica.unixdaemons.com (angelica.unixdaemons.com [209.148.64.135])
	by mx1.FreeBSD.org (Postfix) with ESMTP
	id 6E5CB43FB1; Fri,  7 Feb 2003 09:23:44 -0800 (PST)
	(envelope-from hiten@angelica.unixdaemons.com)
Received: from angelica.unixdaemons.com (hiten@localhost.unixdaemons.com [127.0.0.1])
	by angelica.unixdaemons.com (8.12.7/8.12.1) with ESMTP id h17HNSOm024878;
	Fri, 7 Feb 2003 12:23:28 -0500 (EST)
Received: (from hiten@localhost)
	by angelica.unixdaemons.com (8.12.7/8.12.1/Submit) id h17HNR6M024873;
	Fri, 7 Feb 2003 12:23:27 -0500 (EST)
	(envelope-from hiten)
Date: Fri, 7 Feb 2003 12:23:27 -0500
From: Hiten Pandya <hiten@unixdaemons.com>
To: Julian Elischer <julian@elischer.org>
Cc: John Baldwin <jhb@FreeBSD.ORG>,
	FreeBSD current users <current@FreeBSD.ORG>
Subject: Re: vnode locking question.
Message-ID: <20030207172327.GA23165@unixdaemons.com>
References: <XFMail.20030206111319.jhb@FreeBSD.org> <Pine.BSF.4.21.0302061052200.97117-100000@InterJet.elischer.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <Pine.BSF.4.21.0302061052200.97117-100000@InterJet.elischer.org>
User-Agent: Mutt/1.4i
X-Operating-System: FreeBSD i386
X-Public-Key: http://www.pittgoth.com/~hiten/pubkey.asc
X-URL: http://www.unixdaemons.com/~hiten
X-PGP: http://pgp.mit.edu:11371/pks/lookup?search=Hiten+Pandya&op=index
Sender: owner-freebsd-current@FreeBSD.ORG
Precedence: bulk
List-ID: <freebsd-current.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20freebsd-current>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-current>
X-Loop: FreeBSD.ORG

On Thu, Feb 06, 2003 at 10:53:08AM -0800, Julian Elischer wrote the words in effect of:
> 
> 
> On Thu, 6 Feb 2003, John Baldwin wrote:
> 
> > 
> > On 05-Feb-2003 Julian Elischer wrote:
> > > 
> > > Is there ever a case when a vnode is locked for longer than the duration
> > > of the syscall that locked it?
> > 
> > Shouldn't be.  That would be a bug I believe.  Userland threads should
> > never hold any kernel locks.
> 
> That's what I think too but I just thought I'd ask..
> (NFS worries me a bit)
> 

If It did, wouldn't that give a panic() with something like:
	"panic: mutex held on exit to userland..."

... or something like that?

-- 
Hiten Pandya (hiten@unixdaemons.com, hiten@uk.FreeBSD.org)
http://www.unixdaemons.com/~hiten/

To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-current" in the body of the message