796 copy_present_page(struct vm_area_struct *dst_vma, struct vm_area_struct *src_vma,  in copy_present_page()  argument
800 	struct mm_struct *src_mm = src_vma->vm_mm;  in copy_present_page()
803 	if (!is_cow_mapping(src_vma->vm_flags))  in copy_present_page()
833 	copy_user_highpage(new_page, page, addr, src_vma);  in copy_present_page()
851 copy_present_pte(struct vm_area_struct *dst_vma, struct vm_area_struct *src_vma,  in copy_present_pte()  argument
855 	struct mm_struct *src_mm = src_vma->vm_mm;  in copy_present_pte()
856 	unsigned long vm_flags = src_vma->vm_flags;  in copy_present_pte()
860 	page = vm_normal_page(src_vma, addr, pte);  in copy_present_pte()
864 		retval = copy_present_page(dst_vma, src_vma, dst_pte, src_pte,  in copy_present_pte()
923 copy_pte_range(struct vm_area_struct *dst_vma, struct vm_area_struct *src_vma,  in copy_pte_range()  argument
928 	struct mm_struct *src_mm = src_vma->vm_mm;  in copy_pte_range()
971 							src_vma, addr, rss);  in copy_pte_range()
978 		ret = copy_present_pte(dst_vma, src_vma, dst_pte, src_pte,  in copy_pte_range()
1014 		prealloc = page_copy_prealloc(src_mm, src_vma, addr);  in copy_pte_range()
1029 copy_pmd_range(struct vm_area_struct *dst_vma, struct vm_area_struct *src_vma,  in copy_pmd_range()  argument
1034 	struct mm_struct *src_mm = src_vma->vm_mm;  in copy_pmd_range()
1047 			VM_BUG_ON_VMA(next-addr != HPAGE_PMD_SIZE, src_vma);  in copy_pmd_range()
1049 					    dst_pmd, src_pmd, addr, src_vma);  in copy_pmd_range()
1058 		if (copy_pte_range(dst_vma, src_vma, dst_pmd, src_pmd,  in copy_pmd_range()
1066 copy_pud_range(struct vm_area_struct *dst_vma, struct vm_area_struct *src_vma,  in copy_pud_range()  argument
1071 	struct mm_struct *src_mm = src_vma->vm_mm;  in copy_pud_range()
1084 			VM_BUG_ON_VMA(next-addr != HPAGE_PUD_SIZE, src_vma);  in copy_pud_range()
1086 					    dst_pud, src_pud, addr, src_vma);  in copy_pud_range()
1095 		if (copy_pmd_range(dst_vma, src_vma, dst_pud, src_pud,  in copy_pud_range()
1103 copy_p4d_range(struct vm_area_struct *dst_vma, struct vm_area_struct *src_vma,  in copy_p4d_range()  argument
1119 		if (copy_pud_range(dst_vma, src_vma, dst_p4d, src_p4d,  in copy_p4d_range()
1127 copy_page_range(struct vm_area_struct *dst_vma, struct vm_area_struct *src_vma)  in copy_page_range()  argument
1131 	unsigned long addr = src_vma->vm_start;  in copy_page_range()
1132 	unsigned long end = src_vma->vm_end;  in copy_page_range()
1134 	struct mm_struct *src_mm = src_vma->vm_mm;  in copy_page_range()
1145 	if (!(src_vma->vm_flags & (VM_HUGETLB | VM_PFNMAP | VM_MIXEDMAP)) &&  in copy_page_range()
1146 	    !src_vma->anon_vma)  in copy_page_range()
1149 	if (is_vm_hugetlb_page(src_vma))  in copy_page_range()
1150 		return copy_hugetlb_page_range(dst_mm, src_mm, src_vma);  in copy_page_range()
1152 	if (unlikely(src_vma->vm_flags & VM_PFNMAP)) {  in copy_page_range()
1157 		ret = track_pfn_copy(src_vma);  in copy_page_range()
1168 	is_cow = is_cow_mapping(src_vma->vm_flags);  in copy_page_range()
1172 					0, src_vma, src_mm, addr, end);  in copy_page_range()
1183 		if (unlikely(copy_p4d_range(dst_vma, src_vma, dst_pgd, src_pgd,  in copy_page_range()