ART_HEAP_IDX_TABLE
KASSERT(j != ART_HEAP_IDX_TABLE && j != ART_HEAP_IDX_DEFAULT);
SMR_PTR_SET_LOCKED(&heap[ART_HEAP_IDX_TABLE], (art_heap_entry)at);
return ((struct art_table *)heap[ART_HEAP_IDX_TABLE]);
kread((u_long)(kheap + ART_HEAP_IDX_TABLE), &entry, sizeof(entry));