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From: Tejun Heo <tj@kernel.org>
To: Xiaotian Feng <dfeng@redhat.com>
Cc: axboe@kernel.dk, linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH] block: slightly optimize blkdev_ioctl BLKRA{SET,GET}
Date: Fri, 17 Jul 2009 14:03:42 +0900	[thread overview]
Message-ID: <4A60062E.8090406@kernel.org> (raw)
In-Reply-To: <1247580737-24713-1-git-send-email-dfeng@redhat.com>

Xiaotian Feng wrote:
> Slightly optimize blkdev_ioctl by using shift instead of multiply
> and divide.
> 
> Signed-off-by: Xiaotian Feng <dfeng@redhat.com>

As other people have commented, this is unnecessary.  Let's leave it
to the compiler.

Thanks.

-- 
tejun

  reply	other threads:[~2009-07-17  5:04 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1247572395-24021-1-git-send-email-dfeng@redhat.com>
2009-07-14 14:12 ` [RFC PATCH] block: slightly optimize blkdev_ioctl BLKRA{SET,GET} Xiaotian Feng
2009-07-17  5:03   ` Tejun Heo [this message]
2009-07-14 11:59 Xiaotian Feng
2009-07-14 13:48 ` Américo Wang
2009-07-14 14:08 ` Johannes Weiner

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