linux-kernel - [PATCH] nvme: Print capabilities changes just once

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Message-Id: <20230613175538.331639-1-leitao@debian.org>
Date:   Tue, 13 Jun 2023 10:55:37 -0700
From:   Breno Leitao <leitao@...ian.org>
To:     Keith Busch <kbusch@...nel.org>, Jens Axboe <axboe@...nel.dk>,
        Christoph Hellwig <hch@....de>,
        Sagi Grimberg <sagi@...mberg.me>
Cc:     leit@...com,
        linux-nvme@...ts.infradead.org (open list:NVM EXPRESS DRIVER),
        linux-kernel@...r.kernel.org (open list)
Subject: [PATCH] nvme: Print capabilities changes just once

This current dev_info() could be very verbose and being printed very
frequently depending on some userspace application sending some specific
commands.

Let's turn it into a dev_info_once(), since it is not useful to know
about it all the time.

Signed-off-by: Breno Leitao <leitao@...ian.org>
---
 drivers/nvme/host/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 3ec38e2b9173..459e5a84e596 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1134,7 +1134,7 @@ void nvme_passthru_end(struct nvme_ctrl *ctrl, struct nvme_ns *ns, u32 effects,
 		mutex_unlock(&ctrl->scan_lock);
 	}
 	if (effects & NVME_CMD_EFFECTS_CCC) {
-		dev_info(ctrl->device,
+		dev_info_once(ctrl->device,
 "controller capabilities changed, reset may be required to take effect.\n");
 	}
 	if (effects & (NVME_CMD_EFFECTS_NIC | NVME_CMD_EFFECTS_NCC)) {
-- 
2.34.1