[PATCH] nvme: quiet user passthrough command errors

[Jens Axboe]

On 10/26/22 11:41 PM, Kanchan Joshi wrote:
> On Wed, Oct 26, 2022 at 10:07:15AM -0700, Keith Busch wrote:
>> From: Keith Busch <kbusch at kernel.org>
>>
>> The driver is spamming the kernel logs for entirely harmless errors from
>> user space submitting unsupported commmands. Just silence the errors.
>> The application has direct access to command status, so there's no need
>> to log these.
>>
>> Cc: Daniel Wagner <dwagner at suse.de>
>> Cc: Alan Adamson <alan.adamson at oracle.com>
>> Signed-off-by: Keith Busch <kbusch at kernel.org>
>> ---
>> drivers/nvme/host/core.c | 1 +
>> 1 file changed, 1 insertion(+)
>>
>> diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
>> index 686c55cb5d1a..da874172a31d 100644
>> --- a/drivers/nvme/host/core.c
>> +++ b/drivers/nvme/host/core.c
>> @@ -1156,6 +1156,7 @@ int nvme_execute_passthru_rq(struct request *rq, u32 *effects)
>>     struct nvme_ns *ns = rq->q->queuedata;
>>
>>     *effects = nvme_passthru_start(ctrl, ns, cmd->common.opcode);
>> +    rq->rq_flags |= RQF_QUIET;
>>     return nvme_execute_rq(rq, false);
>> }
> 
> Can we do this for uring-passthrough path too? Like below patch -
> 
> diff --git a/drivers/nvme/host/ioctl.c b/drivers/nvme/host/ioctl.c
> index 81f5550b670d..a91cefc38506 100644
> --- a/drivers/nvme/host/ioctl.c
> +++ b/drivers/nvme/host/ioctl.c
> @@ -556,6 +556,7 @@ static int nvme_uring_cmd_io(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
>        } else {
>                req->end_io = nvme_uring_cmd_end_io;
>        }
> +       req->rq_flags |= RQF_QUIET;
>        blk_execute_rq_nowait(req, false);
>        return -EIOCBQUEUED;
> }
> 
> Looks good otherwise.
> Reviewed-by: Kanchan Joshi <joshi.k at samsung.com>

Agree, we should do it for this path too.

-- 
Jens Axboe