[PATCHv2] nvme-pci: use blk_map_iter for p2p metadata

[Christoph Hellwig]

On Tue, Oct 21, 2025 at 08:18:31AM -0700, Keith Busch wrote:
> From: Keith Busch <kbusch at kernel.org>
> 
> The dma_map_bvec helper doesn't work for p2p data, so use the same
> blk_map_iter method that sgl uses for this memory type.

Looks good:

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

Although I'd still rename nvme_pci_setup_meta_sgls as in my draft as
the name is a bit misleading now.