On Tue, 2005-10-18 at 21:07 -0700, Andrew Morton wrote:
> Rohit Seth <[email protected]> wrote:
> >
> > The prefetching problem is handled OK for regular pages because we can
> > handle page faults corresponding to those pages. That is currently not
> > true for hugepages. Currently the kernel assumes that PAGE_FAULT
> > happening against a hugetlb page is caused by truncate and returns
> > SIGBUS.
>
> Doh. No fault handler. The penny finally drops.
>
> Adam, I think this patch is temporary?
Yeah, looks like it can be dropped now since we handle this case (in
hugetlb_fault) as:
> size = i_size_read(mapping->host) >> HPAGE_SHIFT;
> if (idx >= size)
> goto backout;
>
> ret = VM_FAULT_MINOR;
> if (!pte_none(*pte))
> goto backout;
--
Adam Litke - (agl at us.ibm.com)
IBM Linux Technology Center
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