[PATCH v2 0/2] Rework blk_mq_mark_tag_wait()

[Bart Van Assche <bart.vanassche@wdc.com>]

Hello Jens,

This patch series reworks the blk_mq_mark_tag_wait() implementation and also
fixes a race condition in that function. Please consider these two patches for
kernel v4.16.

Thanks,

Bart.

Changes compared to v1:
- Split a single patch into two patches to make reviewing easier.
- The race fix does no longer use prepare_to_wait() / finish_wait().

Bart Van Assche (2):
  blk-mq: Reduce the number of if-statements in blk_mq_mark_tag_wait()
  blk-mq: Fix a race condition in blk_mq_mark_tag_wait()

 block/blk-mq.c | 49 ++++++++++++++++++++++++-------------------------
 1 file changed, 24 insertions(+), 25 deletions(-)

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2.15.1