vdo_finish_draining
bool vdo_finish_draining(struct admin_state *state);
vdo_finish_draining(&pool->state);
vdo_finish_draining(state);
vdo_finish_draining(&zone->state);
vdo_finish_draining(state);
vdo_finish_draining(&flusher->state);
vdo_finish_draining(&zone->state);
vdo_finish_draining(&packer->state);
if (!vdo_finish_draining(&scrubber->admin_state))
if (vdo_finish_draining(&scrubber->admin_state))