[PATCH][RFC] Allow explicit shrinking of arena heaps using an environment variable

[Roland McGrath]

> I believe you are talking about the madvise mode that has been discussed a
> few years ago, but unfortunately wasn't implemented in the end.

I was speaking in the abstract about what the interface contract for
MADV_DONTNEED is and thus the range of behaviors that some kernel (Linux
or otherwise) might one day implement.


Thanks,
Roland