--- old/src/hotspot/share/services/virtualMemoryTracker.cpp	2020-09-04 13:57:18.093137711 +0200
+++ new/src/hotspot/share/services/virtualMemoryTracker.cpp	2020-09-04 13:57:17.717135273 +0200
@@ -667,10 +667,9 @@
   mss._committed_in_bytes[type]  = MetaspaceUtils::committed_bytes(type);
   mss._used_in_bytes[type]       = MetaspaceUtils::used_bytes(type);
 
-  size_t free_in_bytes = 0;// TODO fix(MetaspaceUtils::capacity_bytes(type) - MetaspaceUtils::used_bytes(type))
-                     //  + MetaspaceUtils::free_chunks_total_bytes(type)
-                     //  + MetaspaceUtils::free_in_vs_bytes(type);
-  mss._free_in_bytes[type] = free_in_bytes;
+  // The answer to "what is free" in metaspace is complex and cannot be answered with a single number.
+  // Free as in available to all loaders? Free, pinned to one loader? For now, keep it simple.
+  mss._free_in_bytes[type] = mss._committed_in_bytes[type] - mss._used_in_bytes[type];
 }
 
 void MetaspaceSnapshot::snapshot(MetaspaceSnapshot& mss) {