[PATCHv9 7/7] scsi: set permanent stream count in block limits

[Bart Van Assche]

On 10/25/24 2:36 PM, Keith Busch wrote:
> From: Keith Busch <kbusch at kernel.org>
> 
> The block limits exports the number of write hints, so set this limit if
> the device reports support for the lifetime hints. Not only does this
> inform the user of which hints are possible, it also allows scsi devices
> supporting the feature to utilize the full range through raw block
> device direct-io.
> 
> Signed-off-by: Keith Busch <kbusch at kernel.org>
> ---
>   drivers/scsi/sd.c | 2 ++
>   1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
> index ca4bc0ac76adc..235dd6e5b6688 100644
> --- a/drivers/scsi/sd.c
> +++ b/drivers/scsi/sd.c
> @@ -3768,6 +3768,8 @@ static int sd_revalidate_disk(struct gendisk *disk)
>   		sd_config_protection(sdkp, &lim);
>   	}
>   
> +	lim.max_write_hints = sdkp->permanent_stream_count;
> +
>   	/*
>   	 * We now have all cache related info, determine how we deal
>   	 * with flush requests.

Reviewed-by: Bart Van Assche <bvanassche at acm.org>