[PATCH V2 0/5] blk-mq: quiesce improvement

[Ming Lei]

Hi Guys,

The 1st patch removes hctx_lock and hctx_unlock, and optimize dispatch
code path a bit.

The 2nd patch moves srcu from blk_mq_hw_ctx to request_queue.

The other patches add one new helper for supporting quiesce in parallel.

V2:
	- add patch of 'remove hctx_lock and hctx_unlock'
	- replace ->alloc_srcu with queue flag, as suggested by Sagi

Ming Lei (5):
  blk-mq: remove hctx_lock and hctx_unlock
  blk-mq: move srcu from blk_mq_hw_ctx to request_queue
  blk-mq: add helper of blk_mq_shared_quiesce_wait()
  nvme: quiesce namespace queue in parallel
  scsi: use blk-mq quiesce APIs to implement scsi_host_block

 block/blk-core.c         |  27 +++++++--
 block/blk-mq-sysfs.c     |   2 -
 block/blk-mq.c           | 116 +++++++++++++--------------------------
 block/blk-sysfs.c        |   3 +-
 block/blk.h              |  10 +++-
 block/genhd.c            |   2 +-
 drivers/nvme/host/core.c |   9 ++-
 drivers/scsi/scsi_lib.c  |  16 +++---
 include/linux/blk-mq.h   |  21 ++++---
 include/linux/blkdev.h   |   9 +++
 10 files changed, 109 insertions(+), 106 deletions(-)

-- 
2.31.1