[PATCH] nvme: uring_cmd specific request_queue for SGLs

[Keith Busch]

On Fri, Jun 27, 2025 at 09:25:24AM +0200, Christoph Hellwig wrote:
> 
> Oh, you are referring to blk_dma_map_direct?

Yes, exactly. Sorry I shortened the name to the ambiguous "direct", but
I think we're on the same page now.

Back to this patch, I get that this uring_cmd path wouldn't be able to
use the more efficient coalesced mapping when the IOMMU is on, and
instead map each segment indiviually. I think that's still better than
the alternative, though.