Method signal

virtio-devices/src/balloon.rs:164–169

(&self, int_type: VirtioInterruptType)

impl BalloonEpollHandler {
    fn signal(&self, int_type: VirtioInterruptType) -> result::Result<(), Error> {
        self.interrupt_cb.trigger(int_type).map_err(|e| {
            error!("Failed to signal used queue: {e:?}");
            Error::FailedSignal(e)
        })
    }

    fn advise_memory_range(
        memory: &GuestMemoryMmap,