From owner-freebsd-hackers@FreeBSD.ORG  Wed Oct 26 18:06:03 2005
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
X-Original-To: freebsd-hackers@freebsd.org
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 09E0716A41F
	for <freebsd-hackers@freebsd.org>; Wed, 26 Oct 2005 18:06:03 +0000 (GMT)
	(envelope-from smb@cs.columbia.edu)
Received: from machshav.com (machshav.com [147.28.0.16])
	by mx1.FreeBSD.org (Postfix) with ESMTP id B9C9043D46
	for <freebsd-hackers@freebsd.org>; Wed, 26 Oct 2005 18:06:02 +0000 (GMT)
	(envelope-from smb@cs.columbia.edu)
Received: by machshav.com (Postfix, from userid 512)
	id 3CA5DFB285; Wed, 26 Oct 2005 18:06:02 +0000 (UTC)
Received: from berkshire.machshav.com (localhost [127.0.0.1])
	by machshav.com (Postfix) with ESMTP
	id A6CB4FB262; Wed, 26 Oct 2005 18:06:01 +0000 (UTC)
Received: from cs.columbia.edu (localhost [127.0.0.1])
	by berkshire.machshav.com (Postfix) with ESMTP id 84A8E3BFD40;
	Wed, 26 Oct 2005 14:06:00 -0400 (EDT)
X-Mailer: exmh version 2.6.3 04/04/2003 with nmh-1.0.4
From: "Steven M. Bellovin" <smb@cs.columbia.edu>
To: Jason Thorpe <thorpej@shagadelic.org>
In-Reply-To: Your message of "Wed, 26 Oct 2005 10:55:39 PDT."
	<F1E1A773-FE03-4E20-906D-601FC522D750@shagadelic.org> 
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Date: Wed, 26 Oct 2005 14:06:00 -0400
Sender: smb@cs.columbia.edu
Message-Id: <20051026180600.84A8E3BFD40@berkshire.machshav.com>
X-Mailman-Approved-At: Thu, 27 Oct 2005 12:41:01 +0000
Cc: freebsd-hackers@freebsd.org, tech-kern@NetBSD.org,
	Bill Studenmund <wrstuden@NetBSD.org>,
	Hans Petter Selasky <hselasky@c2i.net>
Subject: Re: FreeBSD 5/6/7 kernel emulator for NetBSD 2.x 
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>, 
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 26 Oct 2005 18:06:03 -0000

In message <F1E1A773-FE03-4E20-906D-601FC522D750@shagadelic.org>, Jason Thorpe 
writes:

>
>FWIW, I think a devfs based on our new tmpfs would be better for NetBSD.
>

I was under the impression that each i-node in tmpfs consumed a fair 
amount of space, making it a bad match for things like /dev which have 
very many i-nodes but no actual files.  (Well, I've seen glitches on 
ancient systems where /dev/null got turned into a regular file, leading 
to amusing messages about "/dev/null: no space left on device"...)


		--Steven M. Bellovin, http://www.cs.columbia.edu/~smb