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Subject[PATCH -next v2 0/2] block, bfq: make bfq_has_work() more accurate
Date
Changes in v2:
- add reviewed-by tag for patch 1
- use WRITE_ONCE() for updating of 'bfqd->queued' in patch 2

This patchset try to make bfq_has_work() more accurate, patch 1 is a
small problem found by code review.

BTW, I not sure why blk_mq_run_hw_queues() is called with 'bfqd->lock'
held, I think this is not necessary. And bfq_has_work() can be more
accurate by reading 'bfqd->queued' with 'bfqd->lock' held after patch 2.

Previous versions:
v1: https://lore.kernel.org/all/20220510131629.1964415-1-yukuai3@huawei.com/

Yu Kuai (2):
block, bfq: protect 'bfqd->queued' by 'bfqd->lock'
block, bfq: make bfq_has_work() more accurate

block/bfq-iosched.c | 20 +++++++++++++++-----
1 file changed, 15 insertions(+), 5 deletions(-)

--
2.31.1

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