Pull block fixes from Jens Axboe:
"A small collection of fixes for the current rc series. This contains:
- Two small blk-mq patches from Rob Elliott, cleaning up error case
at init time.
- A fix from Ming Lei, fixing SG merging for blk-mq where
QUEUE_FLAG_SG_NO_MERGE is the default.
- A dev_t minor lifetime fix from Keith, fixing an issue where a
minor might be reused before all references to it were gone.
- Fix from Alan Stern where an unbalanced queue bypass caused SCSI
some headaches when it does a series of add/del on devices without
fully registrering the queue.
- A fix from me for improving the scaling of tag depth in blk-mq if
we are short on memory"
* 'for-linus' of git://git.kernel.dk/linux-block:
blk-mq: scale depth and rq map appropriate if low on memory
Block: fix unbalanced bypass-disable in blk_register_queue
block: Fix dev_t minor allocation lifetime
blk-mq: cleanup after blk_mq_init_rq_map failures
blk-mq: pass along blk_mq_alloc_tag_set return values
blk-merge: fix blk_recount_segments
645cc09381