linux-kernel - Re: [PATCH 12/13] sysfs: Propagate renames to the vfs on demand

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Date:	Fri, 06 Nov 2009 18:16:29 -0800
From:	ebiederm@...ssion.com (Eric W. Biederman)
To:	Tejun Heo <tj@...nel.org>
Cc:	"Serge E. Hallyn" <serue@...ibm.com>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Kay Sievers <kay.sievers@...y.org>, Greg KH <greg@...ah.com>,
	linux-kernel@...r.kernel.org,
	Cornelia Huck <cornelia.huck@...ibm.com>,
	linux-fsdevel@...r.kernel.org,
	Eric Dumazet <eric.dumazet@...il.com>,
	Benjamin LaHaise <bcrl@...et.ca>,
	"Eric W. Biederman" <ebiederm@...stanetworks.com>
Subject: Re: [PATCH 12/13] sysfs: Propagate renames to the vfs on demand

Tejun Heo <tj@...nel.org> writes:

> Hello,
>
> Eric W. Biederman wrote:
>> It isn't what I want but it is what the VFS requires.  If let the vfs
>> continue on it's delusional state we will leak the vfs mount and
>> everything mounted on top of it, with no way to remove the mounts.
>
> This is caused by not having any way to prevent deletion on
> directories with submounts, right?  How does other distributed
> filesystems deal with directories with submounts going away underneath
> it?

NFS does exactly the same thing I am doing.

Eric
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