Return-path: Received: from li9-11.members.linode.com ([67.18.176.11]:60430 "EHLO imap.thunk.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S936310Ab3DIAhj (ORCPT ); Mon, 8 Apr 2013 20:37:39 -0400 Date: Mon, 8 Apr 2013 20:37:20 -0400 From: Theodore Ts'o To: Adrian Chadd Cc: Christian Lamparter , Eugene Krasnikov , Kalle Valo , "Luis R. Rodriguez" , linux-bluetooth , linux-wireless , ath9k_htc_fw , "linux-kernel@vger.kernel.org" Subject: Re: Version number policy! Message-ID: <20130409003720.GA5145@thunk.org> (sfid-20130409_023755_418454_23C8310E) References: <201304090003.47056.chunkeey@googlemail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: Sender: linux-wireless-owner@vger.kernel.org List-ID: On Mon, Apr 08, 2013 at 04:12:07PM -0700, Adrian Chadd wrote: > I'm a FreeBSD user. I know what it's like to have an alternate, out of > linux implementation of ext2/3 that doesn't implement all of the > features. > > I also know what kinds of crap happens when you try mounting a more > recent extX filesystem on an earlier kernel. Ie, it doesn't > necessarily end well. :-) There shouldn't be any crap; just a an error message indicating that "the file system has features which this implementation doesn't understand". At least, if the implementation was competently coded.... (ext2/3/4 has feature bitmasks that make it very clear what features are required so that an implementation can mount the file system read/write or read/only). - Ted