[PATCH V4 0/2] blk-mq/nvme: cancel request synchronously

[Ming Lei <ming.lei@redhat.com>]

Hi,

This patchset introduces blk_mq_complete_request_sync() for canceling
request synchronously in error handler context, then one race between
completing request remotely and destroying contoller/queues can be fixed.


V4:
	- drop return value
	- don't handle fake timeout

V3:
	- avoid extra cost to blk_mq_complete_request

V2:
	- export via EXPORT_SYMBOL_GPL
	- minor commit log change

Ming Lei (2):
  blk-mq: introduce blk_mq_complete_request_sync()
  nvme: cancel request synchronously

 block/blk-mq.c           | 7 +++++++
 drivers/nvme/host/core.c | 2 +-
 include/linux/blk-mq.h   | 1 +
 3 files changed, 9 insertions(+), 1 deletion(-)

Cc: Keith Busch <kbusch@kernel.org>
Cc: Sagi Grimberg <sagi@grimberg.me>
Cc: Bart Van Assche <bvanassche@acm.org>
Cc: James Smart <james.smart@broadcom.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: linux-nvme@lists.infradead.org


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