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* [PATCH v2 4/5] nvme-rdma: avoid repeated request completion
@ 2020-10-22  2:15 Chao Leng
  0 siblings, 0 replies; only message in thread
From: Chao Leng @ 2020-10-22  2:15 UTC (permalink / raw)
  To: linux-nvme; +Cc: kbusch, axboe, hch, lengchao, sagi

From: Sagi Grimberg <sagi@grimberg.me>

The request may be executed asynchronously, and rq->state may be
changed to IDLE. To avoid repeated request completion, only
MQ_RQ_COMPLETE of rq->state is checked in nvme_rdma_complete_timed_out.
It is not safe, so need adding check IDLE for rq->state.

Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Chao Leng <lengchao@huawei.com>
---
 drivers/nvme/host/rdma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index fde8ad07326e..3f5ebf4c8ac6 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -1967,7 +1967,7 @@ static void nvme_rdma_complete_timed_out(struct request *rq)
 	struct nvme_rdma_queue *queue = req->queue;
 
 	nvme_rdma_stop_queue(queue);
-	if (!blk_mq_request_completed(rq)) {
+	if (blk_mq_request_started(rq) && !blk_mq_request_completed(rq)) {
 		nvme_req(rq)->status = NVME_SC_HOST_ABORTED_CMD;
 		blk_mq_complete_request(rq);
 	}
-- 
2.16.4


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