blk-mq: Put driver tag in blk_mq_dispatch_rq_list() when no budget
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>
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@ -1222,8 +1222,10 @@ 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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