linux-kernel - Re: [PATCH] free swap space when (re)activating page

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Message-ID: <45DAF794.2000209@redhat.com>
Date:	Tue, 20 Feb 2007 08:28:52 -0500
From:	Rik van Riel <riel@...hat.com>
To:	Christoph Lameter <clameter@....com>
CC:	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>
Subject: Re: [PATCH] free swap space when (re)activating page

Christoph Lameter wrote:
> On Fri, 16 Feb 2007, Rik van Riel wrote:
> 
>> What do you think?
> 
> Looks good apart from one passage (which just vanished when I tried to 
> reply, please post patches as inline text).
> 
> It was the portion that modifies shrink_active_list. Why operate
> on the pagevec there? The pagevec only contains the leftovers to be 
> released from scanning over the temporary inactive list.

Why?  Because the pages that were not referenced will be
going onto the inactive list and are now a candidate for
swapping out.  I don't see why we would want to reclaim
the swap space for pages that area about to be swapped
out again.

-- 
Politics is the struggle between those who want to make their country
the best in the world, and those who believe it already is.  Each group
calls the other unpatriotic.
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