A bunch of cleanups to get us a nice I/O submission path.
- unify and streamline the blk-mq make_request implementat... Christoph Hellwig
- Re: [PATCH 1/4] blk-mq: remove BLK_MQ_F_DEFER_ISSUE Bart Van Assche
- Re: [PATCH 2/4] blk-mq: merge mq and sq make_reques... Bart Van Assche
- Re: [PATCH 3/4] blk-mq: improve blk_mq_try_issue_di... Bart Van Assche
- Re: [PATCH 4/4] blk-mq: streamline blk_mq_make_requ... Bart Van Assche
