In JDK-8330144, `free_memory` has been renamed and the third arg is dropped.

- static void free_memory(char *addr, size_t bytes, size_t alignment_hint);
+ static void disclaim_memory(char *addr, size_t bytes);

The surrounding comment in the caller `bias_region` is not updated though.

```
// The alignment_hint argument must be less than or equal to the small page
// size if not using large pages or else this function does nothing.
```

It refers to the removed third-arg and can be dropped.