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Date: Mon, 22 Feb 2016 00:59:40 -0800
From: Christoph Hellwig <hch@infradead.org>
To: Ming Lei <ming.lei@canonical.com>
Cc: Jens Axboe <axboe@kernel.dk>, linux-kernel@vger.kernel.org,
	linux-block@vger.kernel.org, Christoph Hellwig <hch@infradead.org>,
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Subject: Re: [PATCH v1 1/4] block: bio: introduce helpers to get the 1st and
 last bvec
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References: <1455852022-14188-1-git-send-email-ming.lei@canonical.com>
 <1455852022-14188-2-git-send-email-ming.lei@canonical.com>
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> +/*
> + * bio_get_last_bvec() is introduced to get the last bvec of one
> + * bio for bio_will_gap().
> + */

I don't think this comment adds any value.

Otherwise looks fine:

Reviewed-by: Christoph Hellwig <hch@lst.de>