linux-kernel - Re: [PATCHv5 7/8] zswap: add swap page writeback support

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Message-ID: <512281BB.30906@linux.vnet.ibm.com>
Date:	Mon, 18 Feb 2013 13:32:11 -0600
From:	Seth Jennings <sjenning@...ux.vnet.ibm.com>
To:	Ric Mason <ric.masonn@...il.com>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.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>,
	Rik van Riel <riel@...hat.com>,
	Larry Woodman <lwoodman@...hat.com>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Dave Hansen <dave@...ux.vnet.ibm.com>,
	Joe Perches <joe@...ches.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org
Subject: Re: [PATCHv5 7/8] zswap: add swap page writeback support

On 02/16/2013 12:11 AM, Ric Mason wrote:
> On 02/14/2013 02:38 AM, Seth Jennings wrote:
<snip>
>> +/*******************************************
>> +* page pool for temporary compression result
>> +********************************************/
>> +#define ZSWAP_TMPPAGE_POOL_PAGES 16
> 
> Why not the number of online cpu?
> 

While the number of online cpus can change, it could better than this
fixed value.

You're the second person to mention this, so I'll fix it up.

Thanks,
Seth

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