NVMe: Rate limit nvme IO warnings

We don't need to spam the kernel logs with thousands of IO cancelling
messages. We can infer all IO's are being cancelled with fewer, or
even none at all. This patch rate limits the message and uses the debug
log level as it is mainly used for testing purposes.

Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 09cc4dafa32a9f5336410abb9a158ad32bb27dfe..a128672472ecf22b0abb1eb588bb12e896903a27 100644 (file)
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -1004,7 +1004,7 @@ static void nvme_cancel_queue_ios(struct request *req, void *data, bool reserved
        if (!blk_mq_request_started(req))
                return;
 
-       dev_warn(nvmeq->q_dmadev,
+       dev_dbg_ratelimited(nvmeq->q_dmadev,
                 "Cancelling I/O %d QID %d\n", req->tag, nvmeq->qid);
 
        status = NVME_SC_ABORT_REQ;