Hi all, this series splits the support for SCSI passthrough commands from the main struct request used all over the block layer into a separate scsi_request structure that drivers that want to support SCSI passthough need to embedded as the first thing into their request-private data, similar to how we handle NVMe passthrough commands. To support this I've added support for that the private data after request structure to the legacy request path instead, so that it can be treated the same way as the blk-mq path. Compare to the current scsi_cmnd allocator that actually is a major simplification. Compared to the previous RFC version the major change is that dm-mpath works with this version. To make it work I've switched the legacy request dm-rq to use the same clone and map method as the blk-mq version. -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
