linux-kernel - Re: [PATCH 1/8] compacting file_ra

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Date:	Sat, 21 Jul 2007 08:17:20 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Andi Kleen <andi@...stfloor.org>,
	Fengguang Wu <wfg@...l.ustc.edu.cn>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/8] compacting file_ra_state

On Fri, Jul 20, 2007 at 11:13:34PM -0700, Linus Torvalds wrote:
> > I thought the new patches were some some restructured code, but 
> > essentially the tested algorithms?
> 
> No, this series is a further cleanup on top of the restructured code, with 
> some new features too. The series _looks_ fine to me, but it still makes 
> sense to go through -mm, I think.

What I meant was:

iirc he first had a "very complex" patchkit in -mm* (the one 
with multiple predictors working together); then that got then replaced
with a simpler easier to review one and now he's feeding the stuff from
the complex one piece by piece back.

Just pointed out that the newer stuff was likely already in -mm* for some
time, just before one of the simplifications.

But I guess more testing cannot hurt anyways.

Anyways it's good we're finally making forward progress on this. It has 
the potential for real nice performance gains.

-Andi
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