From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764621AbYD2Pgm (ORCPT ); Tue, 29 Apr 2008 11:36:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756274AbYD2Pg3 (ORCPT ); Tue, 29 Apr 2008 11:36:29 -0400 Received: from vsmtp02.dti.ne.jp ([202.216.231.137]:54144 "EHLO vsmtp02.dti.ne.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755221AbYD2Pg3 (ORCPT ); Tue, 29 Apr 2008 11:36:29 -0400 X-Greylist: delayed 737 seconds by postgrey-1.27 at vger.kernel.org; Tue, 29 Apr 2008 11:36:28 EDT From: hooanon05@yahoo.co.jp Subject: Re: [RFC PATCH 0/2] Union Mount: Directory listing in glibc To: bsn.0007@gmail.com Cc: libc-alpha@sourceware.org, Jan Blunck , Erez Zadok , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, viro@zeniv.linux.org.uk, Christoph Hellwig , Ulrich Drepper , Mingming Cao , Dave Hansen , Trond Myklebust , bharata@linux.vnet.ibm.com, David Woodhouse In-Reply-To: <20080429133201.GA9938@localhost.localdomain> References: <20080429133201.GA9938@localhost.localdomain> Date: Wed, 30 Apr 2008 00:21:09 +0900 Message-ID: <9167.1209482469@jrobl> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello Nagabhushan, bsn.0007@gmail.com: > I went through Bharata's RFC post on glibc based Union Mount readdir solution > (http://lkml.org/lkml/2008/3/11/34) and have come up with patches > against glibc to implement the same. ::: While I don't have objection against the implementation in userspace, what will UnionMount handle about rmdir or rename dir? Those systemcalls need to test whether the dir is *logically* empty or not in kernel space, don't they? And I am afraid that UnionMount has to implement the similar thing, but it never mean to modify glibc is a bad idea. Junjiro Okajima