linux-kernel - Re: Linux 2.6.26-rc4

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Message-Id: <1212515363.3025.125.camel@raven.themaw.net>
Date:	Wed, 04 Jun 2008 01:49:22 +0800
From:	Ian Kent <raven@...maw.net>
To:	Al Viro <viro@...IV.linux.org.uk>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Miklos Szeredi <miklos@...redi.hu>, jesper@...gh.cc,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: Linux 2.6.26-rc4


On Tue, 2008-06-03 at 18:50 +0100, Al Viro wrote:
> On Wed, Jun 04, 2008 at 01:41:32AM +0800, Ian Kent wrote:
> 
> > OK, I'll need to look at vfs_readdir().
> > I thought vfs_readdir() would take the containing directory mutex as
> > does ->lookup().
> 
> vfs_readdir() takes i_mutex on directory it reads.  I.e. on the victim
> in this case.  lookup has i_mutex on directory it does lookup in, i.e.
> root in this case...

Hahaha, yes, I'll need to go back and re-read that bit of code, sorry.

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