message: mmapheap: make our arena MAP_NORESERVE
diff: @@ -80,7 +80,7 @@ public:
  }
  inline void *malloc(size_t sz) {
  - return map(sz, MAP_PRIVATE | MAP_ANONYMOUS, -1);
  + return map(sz, MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE, -1);
  }
  inline size_t getSize(void *ptr) const {
  