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

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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