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bfq: Drop pointless unlock-lock pair
commit fc84e1f941
upstream.
In bfq_insert_request() we unlock bfqd->lock only to call
trace_block_rq_insert() and then lock bfqd->lock again. This is really
pointless since tracing is disabled if we really care about performance
and even if the tracepoint is enabled, it is a quick call.
CC: stable@vger.kernel.org
Tested-by: "yukuai (C)" <yukuai3@huawei.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20220401102752.8599-5-jack@suse.cz
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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parent
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commit
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1 changed files with 0 additions and 3 deletions
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@ -5529,11 +5529,8 @@ static void bfq_insert_request(struct blk_mq_hw_ctx *hctx, struct request *rq,
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return;
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}
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spin_unlock_irq(&bfqd->lock);
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blk_mq_sched_request_inserted(rq);
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spin_lock_irq(&bfqd->lock);
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bfqq = bfq_init_rq(rq);
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if (!bfqq || at_head || blk_rq_is_passthrough(rq)) {
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if (at_head)
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