From: Yu Kuai <yukuai3@huawei.com>
To: <jack@suse.cz>, <paolo.valente@linaro.org>, <axboe@kernel.dk>
Cc: <linux-block@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<yukuai3@huawei.com>, <yi.zhang@huawei.com>
Subject: [PATCH -next 0/2] block, bfq: make bfq_has_work() more accurate
Date: Tue, 10 May 2022 21:16:27 +0800 [thread overview]
Message-ID: <20220510131629.1964415-1-yukuai3@huawei.com> (raw)
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.
Yu Kuai (2):
block, bfq: protect 'bfqd->queued' by 'bfqd->lock'
block, bfq: make bfq_has_work() more accurate
block/bfq-iosched.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
--
2.31.1
next reply other threads:[~2022-05-10 13:02 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-10 13:16 Yu Kuai [this message]
2022-05-10 13:16 ` [PATCH -next 1/2] block, bfq: protect 'bfqd->queued' by 'bfqd->lock' Yu Kuai
2022-05-11 13:52 ` Jan Kara
2022-05-10 13:16 ` [PATCH -next 2/2] block, bfq: make bfq_has_work() more accurate Yu Kuai
2022-05-11 14:08 ` Jan Kara
2022-05-12 1:30 ` yukuai (C)
2022-05-12 17:10 ` Jan Kara
2022-05-13 1:08 ` yukuai (C)
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