On Thu, Jan 04, 2018 at 12:01:26PM -0700, Logan Gunthorpe wrote:
> Some PCI devices may have memory mapped in a BAR space that's
> intended for use in Peer-to-Peer transactions. In order to enable
> such transactions the memory must be registered with ZONE_DEVICE pages
> so it can be used by DMA interfaces in existing drivers.
> ...

> + * pci_p2pmem_alloc_sgl - allocate p2p memory in an sgl
> + * @pdev:    the device to allocate memory from
> + * @sgl:     the allocated sgl
> + * @nents:      the number of sgs in the list
> + * @length:     number of bytes to allocate

Your later patches use "SGL" in English text.  If that's the conventional
capitalization, please use it here, too.

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