From owner-freebsd-current  Wed Aug 13 21:59:42 1997
Return-Path: <owner-freebsd-current>
Received: (from root@localhost)
          by hub.freebsd.org (8.8.5/8.8.5) id VAA23105
          for current-outgoing; Wed, 13 Aug 1997 21:59:42 -0700 (PDT)
Received: from implode.root.com (implode.root.com [198.145.90.17])
          by hub.freebsd.org (8.8.5/8.8.5) with ESMTP id VAA23100
          for <current@FreeBSD.ORG>; Wed, 13 Aug 1997 21:59:40 -0700 (PDT)
Received: from implode.root.com (localhost [127.0.0.1])
	by implode.root.com (8.8.5/8.8.5) with ESMTP id VAA23455;
	Wed, 13 Aug 1997 21:59:44 -0700 (PDT)
Message-Id: <199708140459.VAA23455@implode.root.com>
To: Terry Lambert <terry@lambert.org>
cc: kato@migmatite.eps.nagoya-u.ac.jp (KATO Takenori), current@FreeBSD.ORG
Subject: Re: Read-only mount of union filesystem 
In-reply-to: Your message of "Wed, 13 Aug 1997 11:19:46 PDT."
             <199708131819.LAA12802@phaeton.artisoft.com> 
From: David Greenman <dg@root.com>
Reply-To: dg@root.com
Date: Wed, 13 Aug 1997 21:59:44 -0700
Sender: owner-freebsd-current@FreeBSD.ORG
X-Loop: FreeBSD.org
Precedence: bulk

>> I'm not 100% sure of the change in union_lookup().
>> 
>> 
>> 2. Following patch supports rdonly mount in vfs layer:
>[ ... ]
>
>> I will commit one of them after discussion.  Please comment.
>
>I support the second patch.
>
>Note that read-only devices need to propagate this falg as an
>override from the device attributes.

   I changed the behavior in FreeBSD to what it is now (which is also the
same as it is in Lite-2). For information on why it is this way, see PR#782.
In my opinion, the current structure is correct.

-DG

David Greenman
Core-team/Principal Architect, The FreeBSD Project