linux-kernel - Re: [patch] lockdep: annotate vfs_rmdir for filesystems that take i_mutex in delete

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Message-Id: <1153895908.2896.6.camel@laptopd505.fenrus.org>
Date:	Wed, 26 Jul 2006 08:38:28 +0200
From:	Arjan van de Ven <arjan@...ux.intel.com>
To:	Andrew Morton <akpm@...l.org>
Cc:	Jesper Juhl <jesper.juhl@...il.com>, linux-kernel@...r.kernel.org,
	reiser@...esys.com, viro@...iv.linux.org.uk, viro@....linux.org.uk,
	reiserfs-dev@...esys.com, reiserfs-list@...esys.com,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [patch] lockdep: annotate vfs_rmdir for filesystems that take
	i_mutex in delete_inode

On Wed, 2006-07-26 at 08:32 +0200, Arjan van de Ven wrote:
> > The VFS takes the directory i_mutex and reiserfs_delete_inode() takes the
> > to-be-deleted file's i_mutex.
> > 
> > That's notabug and lockdep will need to be taught about it.
> 
> Actually the annotation is in vfs_rmdir() since that is where the parent
> is taken (this may sound odd but the I_MUTEX_* ordering rules require
> the parent taking to be annotated rather than the child)


Ignore this; this one is wrong, more later

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