linux-kernel - Re: [PATCH] zram: remove global tb

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Date:	Thu, 8 May 2014 15:24:18 +0900
From:	Minchan Kim <minchan@...nel.org>
To:	Joonsoo Kim <js1304@...il.com>
Cc:	Weijie Yang <weijie.yang.kh@...il.com>,
	Weijie Yang <weijie.yang@...sung.com>,
	Davidlohr Bueso <davidlohr@...com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Seth Jennings <sjennings@...iantweb.net>,
	Nitin Gupta <ngupta@...are.org>,
	Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
	Bob Liu <bob.liu@...cle.com>,
	Dan Streetman <ddstreet@...e.org>,
	Heesub Shin <heesub.shin@...sung.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Linux-MM <linux-mm@...ck.org>
Subject: Re: [PATCH] zram: remove global tb_lock by using lock-free CAS

On Wed, May 07, 2014 at 11:52:59PM +0900, Joonsoo Kim wrote:
> >> Most popular use of zram is the in-memory swap for small embedded system
> >> so I don't want to increase memory footprint without good reason although
> >> it makes synthetic benchmark. Alhought it's 1M for 1G, it isn't small if we
> >> consider compression ratio and real free memory after boot
> 
> We can use bit spin lock and this would not increase memory footprint for 32 bit
> platform.

Sounds like a idea.
Weijie, Do you mind testing with bit spin lock?

> 
> Thanks.
> 
> --
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-- 
Kind regards,
Minchan Kim
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