linux-kernel - Re: lguest, Re: -mm merge plans for 2.6.23

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Message-ID: <20070719172746.GA17710@lst.de>
Date:	Thu, 19 Jul 2007 19:27:46 +0200
From:	Christoph Hellwig <hch@....de>
To:	Rusty Russell <rusty@...tcorp.com.au>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	David Miller <davem@...emloft.net>, hch@....de,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: lguest, Re: -mm merge plans for 2.6.23

On Thu, Jul 12, 2007 at 02:52:23PM +1000, Rusty Russell wrote:
> This is solely for the wakeup: you don't wake an mm 8)
> 
> The mm reference is held as well under the big lguest_mutex (mm gets
> destroyed before files get closed, so we definitely do need to hold a
> reference).
> 
> I just completed benchmarking: the cached wakeup with the current naive
> drivers makes no difference (at one stage I was playing with batched
> hypercalls, where it seemed to help).
> 
> Thanks Christoph, DaveM!

The version that just got into mainline still has the __put_task_struct
export despite not needing it anymore.  Care to fix this up?
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