The pci_map_page function has been moved into our
issued workqueue to prevent an us running out of
mappable addresses on non-HWWD PCIe x8 slots. The
maximum amount that can possible be mapped at one
time now is: 255 dmas X 4 dma channels X 4096 Bytes.
Signed-off-by: NPhilip J Kelleher <pjk1939@linux.vnet.ibm.com>
Signed-off-by: NJens Axboe <axboe@kernel.dk>