From: Omar Sandoval <osandov@xxxxxx>
If ->queue_rq() returns BLK_MQ_RQ_QUEUE_OK, we use continue and skip
over the rest of the loop body. However, dptr is assigned later in the
loop body, and the BLK_MQ_RQ_QUEUE_OK case is exactly the case that we'd
want it for.
NVMe isn't actually using BLK_MQ_F_DEFER_ISSUE yet, nor is any other
in-tree driver, but if the code's going to be there, it might as well
work.
Fixes: 74c450521dd8 ("blk-mq: add a 'list' parameter to ->queue_rq()")
Signed-off-by: Omar Sandoval <osandov@xxxxxx>
---
Let me know if I'm crazy and just misunderstood how this is supposed to
work :) Like I mentioned in the commit description, this doesn't
actually matter since there aren't any drivers using it, but last I saw,
Jens still wanted to get it through eventually
(http://thread.gmane.org/gmane.linux.kernel/1934318).
block/blk-mq.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 29cbc1b5fbdb..6eb9a8068f11 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -784,7 +784,7 @@ static void __blk_mq_run_hw_queue(struct blk_mq_hw_ctx *hctx)
switch (ret) {
case BLK_MQ_RQ_QUEUE_OK:
queued++;
- continue;
+ break;
case BLK_MQ_RQ_QUEUE_BUSY:
list_add(&rq->queuelist, &rq_list);
__blk_mq_requeue_request(rq);
--
2.8.3
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