[RFC PATCH 2/7] block: don't merge different kinds of P2P transfers in a single bio

[Christoph Hellwig]

On Thu, Oct 31, 2024 at 01:58:37PM -0700, Bart Van Assche wrote:
> On 10/27/24 7:21 AM, Leon Romanovsky wrote:
>> +		/*
>> +		 * When doing ZONE_DEVICE-based P2P transfers, all pages in a
>> +		 * bio must be P2P pages from the same device.
>> +		 */
>> +		if ((bio->bi_opf & REQ_P2PDMA) &&
>> +		    !zone_device_pages_have_same_pgmap(bv->bv_page, page))
>> +			return 0;
>
> It's probably too late to change the "zone_device_" prefix into
> something that cannot be confused with a reference to zoned block
> devices?

It's too late and also wrong and also entirely out of scope for this
series.