221 	unsigned long start = addr;  in change_protection_range()  local
238 		flush_tlb_range(vma, start, end);  in change_protection_range()
244 unsigned long change_protection(struct vm_area_struct *vma, unsigned long start,  in change_protection()  argument
251 		pages = hugetlb_change_protection(vma, start, end, newprot);  in change_protection()
253 		pages = change_protection_range(vma, start, end, newprot, dirty_accountable, prot_numa);  in change_protection()
279 static int prot_none_walk(struct vm_area_struct *vma, unsigned long start,  in prot_none_walk()  argument
291 	return walk_page_range(start, end, &prot_none_walk);  in prot_none_walk()
296 	unsigned long start, unsigned long end, unsigned long newflags)  in mprotect_fixup()  argument
300 	long nrpages = (end - start) >> PAGE_SHIFT;  in mprotect_fixup()
319 		error = prot_none_walk(vma, start, end, newflags);  in mprotect_fixup()
343 	pgoff = vma->vm_pgoff + ((start - vma->vm_start) >> PAGE_SHIFT);  in mprotect_fixup()
344 	*pprev = vma_merge(mm, *pprev, start, end, newflags,  in mprotect_fixup()
354 	if (start != vma->vm_start) {  in mprotect_fixup()
355 		error = split_vma(mm, vma, start, 1);  in mprotect_fixup()
375 	change_protection(vma, start, end, vma->vm_page_prot,  in mprotect_fixup()
384 		populate_vma_page_range(vma, start, end, NULL);  in mprotect_fixup()
397 SYSCALL_DEFINE3(mprotect, unsigned long, start, size_t, len,  in SYSCALL_DEFINE3()  argument
408 	if (start & ~PAGE_MASK)  in SYSCALL_DEFINE3()
413 	end = start + len;  in SYSCALL_DEFINE3()
414 	if (end <= start)  in SYSCALL_DEFINE3()
430 	vma = find_vma(current->mm, start);  in SYSCALL_DEFINE3()
438 		start = vma->vm_start;  in SYSCALL_DEFINE3()
443 		if (vma->vm_start > start)  in SYSCALL_DEFINE3()
452 	if (start > vma->vm_start)  in SYSCALL_DEFINE3()
455 	for (nstart = start ; ; ) {  in SYSCALL_DEFINE3()