[PATCH v2] nvme: fine-granular CAP_SYS_ADMIN for nvme io commands

[Sagi Grimberg]

> +bool nvme_cmd_allowed(struct nvme_ns *ns, struct nvme_command *c, fmode_t mode)
> +{
> +	u8 opcode = c->common.opcode;
> +
> +	if (capable(CAP_SYS_ADMIN))
> +		return true;
> +
> +	/* admin commands are not allowed */
> +	if (ns == NULL)
> +		return false;

As Christoph suggested:
	if (!ns)

Other than that, this look good to me
Reviewed-by: Sagi Grimberg <sagi at grimberg.me>