From owner-freebsd-current@FreeBSD.ORG Wed Jun 18 14:49:43 2003 Return-Path: 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 3B79937B401 for ; Wed, 18 Jun 2003 14:49:43 -0700 (PDT) Received: from smtp-send.myrealbox.com (smtp-send.myrealbox.com [192.108.102.143]) by mx1.FreeBSD.org (Postfix) with ESMTP id B2A3543F3F for ; Wed, 18 Jun 2003 14:49:40 -0700 (PDT) (envelope-from wa1ter@myrealbox.com) Received: from myrealbox.com wa1ter@smtp-send.myrealbox.com [64.175.104.255] $ on Novell NetWare via secured & encrypted transport (TLS); Wed, 18 Jun 2003 14:49:40 -0700 Message-ID: <3EF0DE3A.5040605@myrealbox.com> Date: Wed, 18 Jun 2003 14:48:42 -0700 From: walt Organization: none User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.4b) Gecko/20030517 X-Accept-Language: en-us, en MIME-Version: 1.0 To: freebsd-current@freebsd.org References: <43720.1055971536@critter.freebsd.dk> In-Reply-To: <43720.1055971536@critter.freebsd.dk> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: Proof of concept patch for device rearrangement X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Jun 2003 21:49:43 -0000 Poul-Henning Kamp wrote: > I have uploaded a proof of concept patch: > > http://phk.freebsd.dk/patch/fd_dev.patch > ...And with this code enabled, it is possible to go from userland to > device driver without touching Giant underway. I'm sorry, I can't parse that last sentence. Could you explain in 25 words or less (or 3 lines of code) what it means? 'Giant' is the lock that Alan is trying to get rid of? Thanks!