Re: [PATCH v3 06/13] pagemap: use walk->vma instead of calling find_vma()

Kirill A. Shutemov
2014-06-30T12:03:59Z

On Fri, Jun 20, 2014 at 04:11:32PM -0400, Naoya Horiguchi wrote:
> Page table walker has the information of the current vma in mm_walk, so
> we don't have to call find_vma() in each pagemap_hugetlb_range() call.
>
> NULL-vma check is omitted because we assume that we never run hugetlb_entry()
> callback on the address without vma. And even if it were broken, null pointer
> dereference would be detected, so we can get enough information for debugging.
>
> Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>

Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>

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Kirill A. Shutemov