linux-kernel - Re: [PATCH 2/4] block: partition: convert percpu ref

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Message-ID: <20150716143640.GT15934@mtj.duckdns.org>
Date:	Thu, 16 Jul 2015 10:36:40 -0400
From:	Tejun Heo <tj@...nel.org>
To:	Ming Lei <tom.leiming@...il.com>
Cc:	Jens Axboe <axboe@...nel.dk>, linux-kernel@...r.kernel.org,
	Mike Snitzer <snitzer@...hat.com>
Subject: Re: [PATCH 2/4] block: partition: convert percpu ref

On Thu, Jul 16, 2015 at 11:16:45AM +0800, Ming Lei wrote:
> Percpu refcount is the perfect match for partition's case,
> and the conversion is quite straight.
> 
> With the convertion, one pair of atomic inc/dec can be saved
> for accounting block I/O, which is run in hot path of block I/O.
> 
> Signed-off-by: Ming Lei <tom.leiming@...il.com>

Acked-by: Tejun Heo <tj@...nel.org>

Thanks.

-- 
tejun
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