[PATCHSET 0/14] Various block layer optimizations

Hi,

Various cleanups and optimizations that I've worked up while pushing
out IOPS-per-core from ~5.5M to ~8.2M.

-- 
Jens Axboe

Follow-Ups:
- [PATCH 14/14] block: remove some blk_mq_hw_ctx debugfs entries
  - From: Jens Axboe
- [PATCH 13/14] block: remove debugfs blk_mq_ctx dispatched/merged/completed attributes
  - From: Jens Axboe
- [PATCH 12/14] block: align blkdev_dio inlined bio to a cacheline
  - From: Jens Axboe
- [PATCH 11/14] block: optimize blk_mq_rq_ctx_init()
  - From: Jens Axboe
- [PATCH 10/14] block: move blk_mq_tag_to_rq() inline
  - From: Jens Axboe
- [PATCH 09/14] block: only mark bio as tracked if it really is tracked
  - From: Jens Axboe
- [PATCH 08/14] block: improve layout of struct request
  - From: Jens Axboe
- [PATCH 07/14] block: change plugging to use a singly linked list
  - From: Jens Axboe
- [PATCH 06/14] block: store elevator state in request
  - From: Jens Axboe
- [PATCH 05/14] block: don't call blk_status_to_errno() for success status
  - From: Jens Axboe
- [PATCH 04/14] block: move update request helpers into blk-mq.c
  - From: Jens Axboe
- [PATCH 03/14] block: remove useless caller argument to print_req_error()
  - From: Jens Axboe
- [PATCH 02/14] block: don't bother iter advancing a fully done bio
  - From: Jens Axboe
- [PATCH 01/14] block: inline fast path of driver tag allocation
  - From: Jens Axboe