[PATCH v2 1/2] nvmet: Move serial number from controller to subsystem

[Christoph Hellwig]

> -	/* generate a random serial number as our controllers are ephemeral: */
> -	get_random_bytes(&ctrl->serial, sizeof(ctrl->serial));
> -
>  	kref_init(&ctrl->ref);
>  	ctrl->subsys = subsys;
>  
> @@ -928,6 +925,7 @@ struct nvmet_subsys *nvmet_subsys_alloc(const char *subsysnqn,
>  		return NULL;
>  
>  	subsys->ver = NVME_VS(1, 3, 0); /* NVMe 1.3.0 */
> +	get_random_bytes(&subsys->serial, sizeof(subsys->serial));

This removes the comment, which I think is fairly useful.