From mboxrd@z Thu Jan  1 00:00:00 1970
From: hooanon05@yahoo.co.jp
Subject: Re: [RFC PATCH 0/2] Union Mount: Directory listing in glibc
Date: Wed, 30 Apr 2008 00:21:09 +0900
Message-ID: <9167.1209482469@jrobl>
References: <20080429133201.GA9938@localhost.localdomain>
Cc: libc-alpha@sourceware.org, Jan Blunck <jblunck@suse.de>,
	Erez Zadok <ezk@cs.sunysb.edu>, linux-kernel@vger.kernel.org,
	linux-fsdevel@vger.kernel.org, viro@zeniv.linux.org.uk,
	Christoph Hellwig <hch@lst.de>,
	Ulrich Drepper <drepper@redhat.com>,
	Mingming Cao <cmm@us.ibm.com>,
	Dave Hansen <haveblue@us.ibm.com>,
	Trond Myklebust <trond.myklebust@fys.uio.no>,
	bharata@linux.vnet.ibm.com, David Woodhouse <dwmw2@infradead.org>
To: bsn.0007@gmail.com
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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