This series fixes a few lose bits in terms of how nvme uses ->retries, including fixing it for non-PCIe transports. While at it I noticed that nvme and scsi use the field in entirely different ways, and no other driver uses it at all. So I decided to move it into the nvme_request and scsi_request structures instead. Changes since V1: - better changelog for one patch - move the new retries field to the end of struct nvme_request
