reserve_pages
reserve_pages(ref, reservation, reservePages, false);
reserve_pages(ref, reservation, reservePages, false);
reserve_pages(ref, reservation, reservePages, true);
reserve_pages(ref, reservation, reservePages, true);
reserve_pages(ref, &reservation, lastReservedPages, doWrite);
reserve_pages(count, priority, false);
uint32 remaining = reserve_pages(count, priority, true);