8318643: +UseTransparentHugePages must enable +UseLargePages

Reviewed-by: sjohanss

src/hotspot/os/linux/os_linux.cpp

@@ -3775,6 +3775,8 @@ void os::large_page_init() {
     _large_page_size = HugePages::thp_pagesize();
     _page_sizes.add(_large_page_size);
     _page_sizes.add(os::vm_page_size());
+    // +UseTransparentHugePages implies +UseLargePages
+    UseLargePages = true;
 
   } else {