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Date:   Sat, 23 May 2020 11:07:32 -0600
From:   Jens Axboe <>
To:     Kaitao Cheng <>
Subject: Re: [PATCH] linux/blkdev.h: Use ilog2() directly in blksize_bits()

On 5/23/20 9:50 AM, Kaitao Cheng wrote:
> blksize_bits() can be achieved through ilog2(), and ilog2() is
> more efficient.

I like the simplification, but do you have any results to back up
that claim? Is the generated code shorter? Runs faster?

Jens Axboe

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