linux-kernel - Re: [malware-list] TALPA - a threat model? well sorta.

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Date:	Thu, 14 Aug 2008 16:20:39 -0400
From:	Christoph Hellwig <hch@...radead.org>
To:	Theodore Tso <tytso@....edu>,
	Christoph Hellwig <hch@...radead.org>,
	Eric Paris <eparis@...hat.com>, tvrtko.ursulin@...hos.com,
	alan@...rguk.ukuu.org.uk, andi@...stfloor.org,
	Arjan van de Ven <arjan@...radead.org>,
	linux-kernel@...r.kernel.org, malware-list@...ts.printk.net,
	malware-list-bounces@...sg.printk.net, peterz@...radead.org,
	viro@...IV.linux.org.uk
Subject: Re: [malware-list] TALPA - a threat model?  well sorta.

On Thu, Aug 14, 2008 at 03:41:11PM -0400, Theodore Tso wrote:
> We do need a standardized way of enabling it (since it does cost you
> something in performance, so not everyone will want it on), and a
> standardized way of reading i_version out to userspace.  Maybe a mount
> option is the right way to do it, maybe not.
> 
> We may want to take this to the linux-fs list and try to get
> agreements on these points; the main reason why it's not enabled by
> default in ext4 is because the NFSv4 advanced caching code is in
> common use (is it even in mainline)?

I have not yet seen code actually using it at all, neither in mainline
nor on one of the many nfs development lists.

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