Re: [RFC] Hugetlb demotion for x86

[Alan Cox]

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

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/