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

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Message-ID: <m18wejvz9g.fsf@fess.ebiederm.org>
Date:	Fri, 06 Nov 2009 18:34:35 -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:
>> NFS does exactly the same thing I am doing.
>
> Oh... well, sysfs directories parenting other filesystems are pretty
> rare and well defined.  Although it's not very pretty, I don't think
> we'll see any actual problem there.  Thanks for the explanation.

To be perfectly clear, if we hit this ugly case.  The internal
sysfs_dirent tree is always what it should be.  Only the VFS dentry
cache doesn't get updated.

Eric
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