Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964777AbXAHVkX (ORCPT ); Mon, 8 Jan 2007 16:40:23 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932160AbXAHVkW (ORCPT ); Mon, 8 Jan 2007 16:40:22 -0500 Received: from cs.columbia.edu ([128.59.16.20]:39759 "EHLO cs.columbia.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932152AbXAHVkT (ORCPT ); Mon, 8 Jan 2007 16:40:19 -0500 Subject: Re: [PATCH 01/24] Unionfs: Documentation From: Shaya Potter To: Andrew Morton Cc: "Josef 'Jeff' Sipek" , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, hch@infradead.org, viro@ftp.linux.org.uk, torvalds@osdl.org, mhalcrow@us.ibm.com, David Quigley , Erez Zadok In-Reply-To: <20070108131957.cbaf6736.akpm@osdl.org> References: <1168229596580-git-send-email-jsipek@cs.sunysb.edu> <1168229596875-git-send-email-jsipek@cs.sunysb.edu> <20070108111852.ee156a90.akpm@osdl.org> <20070108131957.cbaf6736.akpm@osdl.org> Content-Type: text/plain Date: Mon, 08 Jan 2007 16:30:48 -0500 Message-Id: <1168291848.9853.1.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.9.4 Content-Transfer-Encoding: 7bit X-PerlMx-Spam: Gauge=IIIIIII, Probability=7%, X-Seen-By filter1.cs.columbia.edu Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 825 Lines: 18 On Mon, 2007-01-08 at 13:19 -0800, Andrew Morton wrote: > On Mon, 8 Jan 2007 14:43:39 -0500 (EST) Shaya Potter wrote: > > It's the same thing as modifying a block > > device while a file system is using it. Now, when unionfs gets confused, > > it shouldn't oops, but would one expect ext3 to allow one to modify its > > backing store while its using it? > > There's no such problem with bind mounts. It's surprising to see such a > restriction with union mounts. the difference is bind mounts are a vfs construct, while unionfs is a file system. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/