linux-kernel - Re: [PATCH] ps3vram: Replace mutex by spinlock + list

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Message-ID: <20090403180317.GB5178@kernel.dk>
Date:	Fri, 3 Apr 2009 20:03:17 +0200
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Geert Uytterhoeven <Geert.Uytterhoeven@...ycom.com>
Cc:	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org,
	cbe-oss-dev@...abs.org
Subject: Re: [PATCH] ps3vram: Replace mutex by spinlock + list

On Fri, Apr 03 2009, Geert Uytterhoeven wrote:
> Remove the mutex serializing access to the cache.
> Instead, queue up new requests on a list if the driver is busy.
> 
> This improves sequential write performance by ca. 2%.

Great, precisely the method I wanted to see there! I've added your three
patches, thanks Geert.


-- 
Jens Axboe

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