mm/hmm: remove the mask variable in hmm_vma_walk_hugetlb_entry

				      struct mm_walk *walk)

{

#ifdef CONFIG_HUGETLB_PAGE

	unsigned long addr = start, i, pfn, mask;

	unsigned long addr = start, i, pfn;

	struct hmm_vma_walk *hmm_vma_walk = walk->private;

	struct hmm_range *range = hmm_vma_walk->range;

	struct vm_area_struct *vma = walk->vma;

	struct hstate *h = hstate_vma(vma);

	uint64_t orig_pfn, cpu_flags;

	bool fault, write_fault;

	spinlock_t *ptl;

	pte_t entry;

	int ret = 0;

	mask = huge_page_size(h) - 1;

	ptl = huge_pte_lock(hstate_vma(vma), walk->mm, pte);

	entry = huge_ptep_get(pte);

		goto unlock;

	}

	pfn = pte_pfn(entry) + ((start & mask) >> PAGE_SHIFT);

	pfn = pte_pfn(entry) + ((start & ~hmask) >> PAGE_SHIFT);

	for (; addr < end; addr += PAGE_SIZE, i++, pfn++)

		range->pfns[i] = hmm_device_entry_from_pfn(range, pfn) |

				 cpu_flags;