linux-kernel - Re: [PATCH 1/2] VFS: Make d_materialise_unique() enforce directory uniqueness

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Message-Id: <E1GaerI-0007Af-00@dorka.pomaz.szeredi.hu>
Date:	Thu, 19 Oct 2006 22:51:20 +0200
From:	Miklos Szeredi <miklos@...redi.hu>
To:	Trond.Myklebust@...app.com
CC:	torvalds@...l.org, viro@....linux.org.uk,
	linux-kernel@...r.kernel.org, nfs@...ts.sourceforge.net
Subject: Re: [PATCH 1/2] VFS: Make d_materialise_unique() enforce directory
	uniqueness

> From: Trond Myklebust <Trond.Myklebust@...app.com>
> 
> If the caller tries to instantiate a directory using an inode that already
> has a dentry alias, then we attempt to rename the existing dentry instead
> of instantiating a new one. Fail with an ELOOP error if the rename would
> affect one of our parent directories.
> 
> This behaviour is needed in order to avoid issues such as
> 
>   http://bugzilla.kernel.org/show_bug.cgi?id=7178
>

This looks like a stale patch.  You posted one on -fsdevel that did
i_mutex locking as well.

Miklos
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