Try to get rid of the req->special users so that we can remove this field. With this series we basically only have the osd / scsi BIDI code left, which should go away in another series. Note that the first one is a bug fix for the blk-mq conversion series, I don't think the current fnic code can work, but this version is only compile tested as well. Changes since v1: - fix the retries counter in skd to actually work.
