evict_data
struct evict_data *evict_data = evict_arg;
evict_data->cleared += node->npages;
if (evict_data->cleared >= evict_data->target)
struct evict_data evict_data;
evict_data.cleared = 0;
evict_data.target = npages;
hfi1_mmu_rb_evict(pq->handler, &evict_data);
return evict_data.cleared;