On 12/03/2013 03:51 AM, Mel Gorman wrote:
> +
> + if (page_count(page) != 2) {
> + set_pmd_at(mm, mmun_start, pmd, orig_entry);
> + flush_tlb_range(vma, mmun_start, mmun_end);
The mmun_start and mmun_end variables are introduced in patch 5.
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