On Thu, 9 Apr 2015, Gerald Schaefer wrote:
> commit 61f77eda "mm/hugetlb: reduce arch dependent code around follow_huge_*"
> broke follow_huge_pmd() on s390, where pmd and pte layout differ and using
> pte_page() on a huge pmd will return wrong results. Using pmd_page() instead
> fixes this.
>
> All architectures that were touched by commit 61f77eda have pmd_page()
> defined, so this should not break anything on other architectures.
>
> Signed-off-by: Gerald Schaefer <gerald.schae...@de.ibm.com>
> Cc: sta...@vger.kernel.org # v3.12
Acked-by: David Rientjes <rient...@google.com>
I'm not sure where the stable cc came from, though: commit 61f77eda makes
s390 use a generic version of follow_huge_pmd() and that generic version
is buggy for s930 because of commit e66f17ff7177 ("mm/hugetlb: take page
table lock in follow_huge_pmd()"). Both of those are 4.0 material,
though, so why is this needed for stable 3.12?
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
