[PATCH v2 08/10] nvme-pci: Add support for P2P memory in requests

[Sagi Grimberg]

> For P2P requests we must use the pci_p2pmem_[un]map_sg() functions
> instead of the dma_map_sg functions.
> 
> With that, we can then indicate PCI_P2P support in the request queue.
> For this, we create an NVME_F_PCI_P2P flag which tells the core to
> set QUEUE_FLAG_PCI_P2P in the request queue.

This looks fine to me,

Reviewed-by: Sagi Grimberg <sagi at grimberg.me>

Any plans adding the capability to nvme-rdma? Should be
straight-forward... In theory, the use-case would be rdma backend
fabric behind. Shouldn't be hard to test either...