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Date: Thu, 3 Sep 2020 10:26:09 +0200
From: Christoph Hellwig <hch@lst.de>
To: Ulf Hansson <ulf.hansson@linaro.org>
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Cc: Jens Axboe <axboe@kernel.dk>, linux-raid@vger.kernel.org,
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	target-devel@vger.kernel.org, Christoph Hellwig <hch@lst.de>,
	drbd-dev@lists.linbit.com
Subject: Re: [Drbd-dev] [PATCH 2/9] block: add a bdev_is_partition helper
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On Thu, Sep 03, 2020 at 10:19:34AM +0200, Ulf Hansson wrote:
> On Thu, 3 Sep 2020 at 07:42, Christoph Hellwig <hch@lst.de> wrote:
> >
> > Add a littler helper to make the somewhat arcane bd_contains checks a
> > little more obvious.
> >
> > Signed-off-by: Christoph Hellwig <hch@lst.de>
> 
> Not sure why we have both "bd_contains" and "bd_partno", nevertheless,
> feel free to add:

Right now both are needed for how blkdev_get/put work.  But I plan to
eventual kill off bd_contains after some major surgery to that code.