FW: [PATCH] powerpc/mm: Export HPAGE_SHIFT

[Nick Piggin]

On Wednesday 04 February 2009 16:13:29 Andrew Morton wrote:
> On Wed, 04 Feb 2009 12:50:48 +1100 Benjamin Herrenschmidt 
> > Do the generic hugetlbfs code provides such an API ? If not, we may need
> > to add one.
>
> I think it's something like
>
> 	huge_page_size(page_hstate(page))

That would work if you have a page, yes. If you want to query which hugepage
sizes are available, then you probably want for_each_hstate() (which is only
within mm/hugetlb.c at the moment, but I have no objections to exporting it
and symbols it requires).