linux-kernel - Re: [PATCH v6 0/5] zram/zsmalloc promotion

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Message-ID: <520DED04.2030605@oracle.com>
Date:	Fri, 16 Aug 2013 17:12:36 +0800
From:	Bob Liu <bob.liu@...cle.com>
To:	Mel Gorman <mgorman@...e.de>
CC:	Minchan Kim <minchan@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jens Axboe <axboe@...nel.dk>,
	Seth Jennings <sjenning@...ux.vnet.ibm.com>,
	Nitin Gupta <ngupta@...are.org>,
	Konrad Rzeszutek Wilk <konrad@...nok.org>,
	Luigi Semenzato <semenzato@...gle.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Pekka Enberg <penberg@...helsinki.fi>
Subject: Re: [PATCH v6 0/5] zram/zsmalloc promotion

Hi Mel,

On 08/16/2013 04:33 PM, Mel Gorman wrote:
> 
> I already said I recognise it has a large number of users in the field
> and users count a lot more than me complaining. If it gets promoted then
> I expect it will be on those grounds.
> 
> My position is that I think it's a bad idea because it is clear there is no
> plan or intention of ever brining zram and zswap together. Instead we are
> to have two features providing similar functionality with zram diverging
> further from zswap.  Ultimately I believe this will increase maintenance
> headaches. It'll get even more entertaining if/when someone ever tries
> to reimplement zcache although since Dan left I do not believe anyone is
> planning to try. I will not be acking this series but there many be enough

I already reimplemented zcache based on mm/zbud.c.
http://thread.gmane.org/gmane.linux.kernel.mm/104824

I'll pay more attention to the problems of zswap as you mentioned.

> developers that are actually willing to maintain a duel zram/zswap mess
> to make it happen anyway.
> 

-- 
Regards,
-Bob
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