* @param page_count Number of pages of the region
* @return Snapshot page numbers of this new snapshot
*/
-ChunkedData::ChunkedData(PageStore& store, AddressSpace& as, RemotePtr<void> addr, std::size_t page_count)
+ChunkedData::ChunkedData(PageStore& store, const AddressSpace& as, RemotePtr<void> addr, std::size_t page_count)
: store_(&store)
{
this->pagenos_.resize(page_count);