2550 static int is_hugetlb_entry_migration(pte_t pte)  in is_hugetlb_entry_migration()  argument
2554 	if (huge_pte_none(pte) || pte_present(pte))  in is_hugetlb_entry_migration()
2556 	swp = pte_to_swp_entry(pte);  in is_hugetlb_entry_migration()
2563 static int is_hugetlb_entry_hwpoisoned(pte_t pte)  in is_hugetlb_entry_hwpoisoned()  argument
2567 	if (huge_pte_none(pte) || pte_present(pte))  in is_hugetlb_entry_hwpoisoned()
2569 	swp = pte_to_swp_entry(pte);  in is_hugetlb_entry_hwpoisoned()
2658 	pte_t pte;  in __unmap_hugepage_range()  local
2682 		pte = huge_ptep_get(ptep);  in __unmap_hugepage_range()
2683 		if (huge_pte_none(pte))  in __unmap_hugepage_range()
2690 		if (unlikely(!pte_present(pte))) {  in __unmap_hugepage_range()
2695 		page = pte_page(pte);  in __unmap_hugepage_range()
2713 		pte = huge_ptep_get_and_clear(mm, address, ptep);  in __unmap_hugepage_range()
2715 		if (huge_pte_dirty(pte))  in __unmap_hugepage_range()
2842 			unsigned long address, pte_t *ptep, pte_t pte,  in hugetlb_cow()  argument
2851 	old_page = pte_page(pte);  in hugetlb_cow()
2894 			BUG_ON(huge_pte_none(pte));  in hugetlb_cow()
2896 			BUG_ON(huge_pte_none(pte));  in hugetlb_cow()
2900 				   pte_same(huge_ptep_get(ptep), pte)))  in hugetlb_cow()
2938 	if (likely(ptep && pte_same(huge_ptep_get(ptep), pte))) {  in hugetlb_cow()
3308 		pte_t *pte;  in follow_hugetlb_page()  local
3320 		pte = huge_pte_offset(mm, vaddr & huge_page_mask(h));  in follow_hugetlb_page()
3321 		if (pte)  in follow_hugetlb_page()
3322 			ptl = huge_pte_lock(h, mm, pte);  in follow_hugetlb_page()
3323 		absent = !pte || huge_pte_none(huge_ptep_get(pte));  in follow_hugetlb_page()
3334 			if (pte)  in follow_hugetlb_page()
3350 		if (absent || is_swap_pte(huge_ptep_get(pte)) ||  in follow_hugetlb_page()
3352 		      !huge_pte_write(huge_ptep_get(pte)))) {  in follow_hugetlb_page()
3355 			if (pte)  in follow_hugetlb_page()
3367 		page = pte_page(huge_ptep_get(pte));  in follow_hugetlb_page()
3403 	pte_t pte;  in hugetlb_change_protection()  local
3423 		pte = huge_ptep_get(ptep);  in hugetlb_change_protection()
3424 		if (unlikely(is_hugetlb_entry_hwpoisoned(pte))) {  in hugetlb_change_protection()
3428 		if (unlikely(is_hugetlb_entry_migration(pte))) {  in hugetlb_change_protection()
3429 			swp_entry_t entry = pte_to_swp_entry(pte);  in hugetlb_change_protection()
3442 		if (!huge_pte_none(pte)) {  in hugetlb_change_protection()
3443 			pte = huge_ptep_get_and_clear(mm, address, ptep);  in hugetlb_change_protection()
3444 			pte = pte_mkhuge(huge_pte_modify(pte, newprot));  in hugetlb_change_protection()
3445 			pte = arch_make_huge_pte(pte, vma, NULL, 0);  in hugetlb_change_protection()
3446 			set_huge_pte_at(mm, address, ptep, pte);  in hugetlb_change_protection()
3620 	pte_t *pte;  in huge_pmd_share()  local
3653 	pte = (pte_t *)pmd_alloc(mm, pud, addr);  in huge_pmd_share()
3655 	return pte;  in huge_pmd_share()
3699 	pte_t *pte = NULL;  in huge_pte_alloc()  local
3705 			pte = (pte_t *)pud;  in huge_pte_alloc()
3709 				pte = huge_pmd_share(mm, addr, pud);  in huge_pte_alloc()
3711 				pte = (pte_t *)pmd_alloc(mm, pud, addr);  in huge_pte_alloc()
3714 	BUG_ON(pte && !pte_none(*pte) && !pte_huge(*pte));  in huge_pte_alloc()
3716 	return pte;  in huge_pte_alloc()
3756 	pte_t pte;  in follow_huge_pmd()  local
3766 	pte = huge_ptep_get((pte_t *)pmd);  in follow_huge_pmd()
3767 	if (pte_present(pte)) {  in follow_huge_pmd()
3773 		if (is_hugetlb_entry_migration(pte)) {  in follow_huge_pmd()