From owner-freebsd-arch@FreeBSD.ORG  Tue Jan  9 06:33:21 2007
Return-Path: <owner-freebsd-arch@FreeBSD.ORG>
X-Original-To: freebsd-arch@freebsd.org
Delivered-To: freebsd-arch@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id F364216A407;
	Tue,  9 Jan 2007 06:33:20 +0000 (UTC)
	(envelope-from phk@critter.freebsd.dk)
Received: from phk.freebsd.dk (phk.freebsd.dk [130.225.244.222])
	by mx1.freebsd.org (Postfix) with ESMTP id B47CD13C458;
	Tue,  9 Jan 2007 06:33:20 +0000 (UTC)
	(envelope-from phk@critter.freebsd.dk)
Received: from critter.freebsd.dk (critter.freebsd.dk [192.168.48.2])
	by phk.freebsd.dk (Postfix) with ESMTP id 12BD01747B;
	Tue,  9 Jan 2007 06:33:18 +0000 (UTC)
Received: from critter.freebsd.dk (localhost [127.0.0.1])
	by critter.freebsd.dk (8.13.8/8.13.8) with ESMTP id l096XIga025838;
	Tue, 9 Jan 2007 06:33:18 GMT (envelope-from phk@critter.freebsd.dk)
To: John Baldwin <jhb@freebsd.org>
From: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
In-Reply-To: Your message of "Mon, 08 Jan 2007 17:50:58 EST."
	<200701081750.59131.jhb@freebsd.org> 
Date: Tue, 09 Jan 2007 06:33:18 +0000
Message-ID: <25837.1168324398@critter.freebsd.dk>
Sender: phk@critter.freebsd.dk
Cc: Ed Schouten <ed@fxq.nl>, freebsd-arch@freebsd.org
Subject: Re: Request for PTY/devfs changes 
X-BeenThere: freebsd-arch@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussion related to FreeBSD architecture <freebsd-arch.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-arch>,
	<mailto:freebsd-arch-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-arch>
List-Post: <mailto:freebsd-arch@freebsd.org>
List-Help: <mailto:freebsd-arch-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-arch>,
	<mailto:freebsd-arch-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 09 Jan 2007 06:33:21 -0000

In message <200701081750.59131.jhb@freebsd.org>, John Baldwin writes:
>On Monday 08 January 2007 14:29, Poul-Henning Kamp wrote:

>Unfortunately the pty uses 'make_dev_cred' with a specific credential and that 
>credential reference is what is not getting released.

devfs needs to learn about that cred if the cdev is marked cheap.

>> In that case the cdev gets recycled quite fast if unreferenced.
>
>How does devfs know to recycle the cdev?  And will it recycle cdev's after 
>they are closed?

via the normal vnode cleaup.


-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk@FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.