On Fri, Nov 20, 2020 at 07:50:56PM +0100, Eugenio Pérez wrote:
> @@ -83,6 +89,18 @@ void vhost_vring_set_notification_rcu(VhostShadowVirtqueue *vq, bool enable)
>      smp_mb();
>  }
>  
> +bool vhost_vring_poll_rcu(VhostShadowVirtqueue *vq)

A name like "more_used" is clearer than "poll".