[PATCH v6 11/12] nvme-rdma: ratelimit the map-failure error message

A mapping failure is per-request and, for an unroutable P2P transfer,
deterministic: a workload that keeps issuing one turns this into a
log line per I/O.  Ratelimit it, as nvme's per-I/O error logging
(nvme_log_error()) already is.

Assisted-by: Claude:claude-fable-5
Signed-off-by: Mykola Marzhan <redacted>
---
 drivers/nvme/host/rdma.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index c38d949502b7..2f50509a7a61 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c

@@ -2040,8 +2040,8 @@ static blk_status_t nvme_rdma_queue_rq(struct blk_mq_hw_ctx *hctx,
 
 	err = nvme_rdma_map_data(queue, rq, c);
 	if (unlikely(err < 0)) {
-		dev_err(queue->ctrl->ctrl.device,
-			     "Failed to map data (%d)\n", err);
+		dev_err_ratelimited(queue->ctrl->ctrl.device,
+				    "Failed to map data (%d)\n", err);
 		goto err;
 	}
 

-- 
2.52.0