On Iau, 2006-05-11 at 16:15 +0100, Hugh Dickins wrote:
> > For one: an application using lots of private huge pages should not be
> > prohibited from forking if it's likely to just exec a small helper
> > program.
>
> This is an excellent use for madvise(start, length, MADV_DONTFORK).
> Though it was added mainly for RDMA issues, it's a great way for a
> program with a huge commitment to exclude areas of its address space
> from the fork, so making that fork much more likely to succeed.
Or fork using vfork() in that case which has even more wins and is a
more efficient if more hair-raising way of doing it
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