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Date: Tue, 4 Jul 2023 07:06:26 -0700
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To: Jan Kara <jack@suse.cz>, linux-block@vger.kernel.org
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From: Bart Van Assche <bvanassche@acm.org>
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Cc: Dave Kleikamp <shaggy@kernel.org>, jfs-discussion@lists.sourceforge.net,
	"Darrick J. Wong" <djwong@kernel.org>, linux-nvme@lists.infradead.org,
	Joseph Qi <joseph.qi@linux.alibaba.com>, dm-devel@redhat.com,
	target-devel@vger.kernel.org, linux-mtd@lists.infradead.org,
	Jack Wang <jinpu.wang@ionos.com>,
	Alasdair Kergon <agk@redhat.com>, drbd-dev@lists.linbit.com,
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	Mike Snitzer <snitzer@kernel.org>, Chao Yu <chao@kernel.org>,
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	Trond Myklebust <trond.myklebust@hammerspace.com>,
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	Andrew Morton <akpm@linux-foundation.org>,
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Subject: Re: [Drbd-dev] [PATCH 01/32] block: Provide blkdev_get_handle_*
	functions
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On 7/4/23 05:21, Jan Kara wrote:
> +struct bdev_handle {
> +	struct block_device *bdev;
> +	void *holder;
> +};

Please explain in the patch description why a holder pointer is 
introduced in struct bdev_handle and how it relates to the bd_holder 
pointer in struct block_device. Is one of the purposes of this patch 
series perhaps to add support for multiple holders per block device?

Thanks,

Bart.