Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762790AbXEVG2P (ORCPT ); Tue, 22 May 2007 02:28:15 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758018AbXEVG2A (ORCPT ); Tue, 22 May 2007 02:28:00 -0400 Received: from mailer.gwdg.de ([134.76.10.26]:45832 "EHLO mailer.gwdg.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757052AbXEVG17 (ORCPT ); Tue, 22 May 2007 02:27:59 -0400 Date: Tue, 22 May 2007 08:25:16 +0200 (MEST) From: Jan Engelhardt To: Bharata B Rao cc: Shaya Potter , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Jan Blunck Subject: Re: [RFC][PATCH 10/14] In-kernel file copy between union mounted filesystems In-Reply-To: <20070522031327.GA4728@in.ibm.com> Message-ID: References: <20070514093722.GB4139@in.ibm.com> <20070514094329.GL4139@in.ibm.com> <20070518111042.GC4869@in.ibm.com> <464DAE73.7000302@cs.columbia.edu> <20070522031327.GA4728@in.ibm.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Spam-Report: Content analysis: 0.0 points, 6.0 required _SUMMARY_ Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 934 Lines: 29 On May 22 2007 08:43, Bharata B Rao wrote: >On Fri, May 18, 2007 at 09:47:31AM -0400, Shaya Potter wrote: >> Bharata B Rao wrote: >> >> > >> >Not really. This is called during copyup of a file residing in a lower >> >layer. And that is done only for regular files. >> >> That is broken. > >But it only breaks the semantics (in other cases we allow writes only to the >top layer files). So the question is why do we have to copy up the device >node ? What difference it makes to writing to the device itself ? Because `chmod 666 blockdevnode` is not the same as writing to the device itself? >Currently we allow write to the device using the lower layer device node >itself. Jan -- - 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/