linux-kernel - Re: [PATCH 2/4] cfq-iosched: reduce bit operations in cfq_choose

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Message-ID: <1306290884.1319.18.camel@leonhard>
Date:	Wed, 25 May 2011 11:34:44 +0900
From:	Namhyung Kim <namhyung@...il.com>
To:	Justin TerAvest <teravest@...gle.com>
Cc:	Jens Axboe <axboe@...nel.dk>, lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/4] cfq-iosched: reduce bit operations in
 cfq_choose_req()

2011-05-24 (화), 10:34 -0700, Justin TerAvest:
> Why make this change? Are we that sensitive to the number of operations?
> 
> It makes the code a bit harder to read, I think.
> 

Hi Justin,

I thought that the function is a sort of hot path operation so it would
be better make it even a bit faster, no? And if you guys think this
patch makes the code harder we can add a comment, although I don't think
it's hard enough. :)

Thanks.


-- 
Regards,
Namhyung Kim


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