linux-kernel - Re: [PATCHv2 8/9] zswap: add to mm/

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Message-ID: <5107A2B8.4070505@parallels.com>
Date:	Tue, 29 Jan 2013 14:21:44 +0400
From:	Lord Glauber Costa of Sealand <glommer@...allels.com>
To:	Seth Jennings <sjenning@...ux.vnet.ibm.com>
CC:	Rik van Riel <riel@...hat.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Nitin Gupta <ngupta@...are.org>,
	Minchan Kim <minchan@...nel.org>,
	"Konrad Rzeszutek Wilk" <konrad.wilk@...cle.com>,
	Dan Magenheimer <dan.magenheimer@...cle.com>,
	Robert Jennings <rcj@...ux.vnet.ibm.com>,
	Jenifer Hopper <jhopper@...ibm.com>,
	Mel Gorman <mgorman@...e.de>,
	"Johannes Weiner" <jweiner@...hat.com>,
	Larry Woodman <lwoodman@...hat.com>, <linux-mm@...ck.org>,
	<linux-kernel@...r.kernel.org>, <devel@...verdev.osuosl.org>
Subject: Re: [PATCHv2 8/9] zswap: add to mm/

On 01/28/2013 07:27 PM, Seth Jennings wrote:
> Yes, I prototyped a shrinker interface for zswap, but, as we both
> figured, it shrinks the zswap compressed pool too aggressively to the
> point of being useless.
Can't you advertise a smaller number of objects that you actively have?

Since the shrinker would never try to shrink more objects than you
advertised, you could control pressure this way.

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