linux-kernel - Re: [patch 05/19] split LRU lists into anon & file sets

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Date:	Fri, 11 Jan 2008 11:06:22 -0500
From:	Rik van Riel <riel@...hat.com>
To:	Lee Schermerhorn <Lee.Schermerhorn@...com>
Cc:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [patch 05/19] split LRU lists into anon & file sets

On Fri, 11 Jan 2008 10:50:09 -0500
Lee Schermerhorn <Lee.Schermerhorn@...com> wrote:

> Again, my doing.  I agree that the calculation is a bit strange, but I
> wanted to "future-proof" this function in case we ever get to a value of
> '6' for the lru_list enum.  In that case, the AND will evaluate to
> non-zero for what may not be a file LRU.  Between the build time
> assertion and the division [which could just be a 'l >> 1', I suppose]
> we should be safe.

Good point.  I did not guess that.

I'll restore the code to your original test.

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