_MapChunk
status_t error = _MapChunk(vmArea, (addr_t)area, kAreaAdminSize,
error = _MapChunk(area->vmArea, chunkAddress, chunkSize, 0, flags);
error = _MapChunk(area->vmArea, chunkAddress, size, 0, flags);
static status_t _MapChunk(VMArea* vmArea, addr_t address,