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blk-mq: Put driver tag in blk_mq_dispatch_rq_list() when no budget
[ Upstream commit 5fe56de799
]
If in blk_mq_dispatch_rq_list() we find no budget, then we break of the
dispatch loop, but the request may keep the driver tag, evaulated
in 'nxt' in the previous loop iteration.
Fix by putting the driver tag for that request.
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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parent
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commit
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1 changed files with 3 additions and 1 deletions
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@ -1232,8 +1232,10 @@ bool blk_mq_dispatch_rq_list(struct request_queue *q, struct list_head *list,
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rq = list_first_entry(list, struct request, queuelist);
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hctx = rq->mq_hctx;
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if (!got_budget && !blk_mq_get_dispatch_budget(hctx))
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if (!got_budget && !blk_mq_get_dispatch_budget(hctx)) {
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blk_mq_put_driver_tag(rq);
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break;
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}
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if (!blk_mq_get_driver_tag(rq)) {
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/*
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