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    Subject[PATCH AUTOSEL 5.4 27/42] nvme-rdma: avoid repeated request completion
    Date
    From: Sagi Grimberg <sagi@grimberg.me>

    [ Upstream commit fdf58e02adecbef4c7cbb2073d8ea225e6fd5f26 ]

    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>
    Signed-off-by: Christoph Hellwig <hch@lst.de>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    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 5199618510a2a..9948e2dfe55f2 100644
    --- a/drivers/nvme/host/rdma.c
    +++ b/drivers/nvme/host/rdma.c
    @@ -1719,7 +1719,7 @@ 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);
    }
    --
    2.27.0
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