780 		unsigned long start, unsigned long nr_pages,  in __get_user_pages()  argument
791 	start = untagged_addr(start);  in __get_user_pages()
809 		if (!vma || start >= vma->vm_end) {  in __get_user_pages()
810 			vma = find_extend_vma(mm, start);  in __get_user_pages()
811 			if (!vma && in_gate_area(mm, start)) {  in __get_user_pages()
812 				ret = get_gate_page(mm, start & PAGE_MASK,  in __get_user_pages()
827 						&start, &nr_pages, i,  in __get_user_pages()
843 		page = follow_page_mask(vma, start, foll_flags, &ctx);  in __get_user_pages()
845 			ret = faultin_page(tsk, vma, start, &foll_flags,  in __get_user_pages()
873 			flush_anon_page(vma, page, start);  in __get_user_pages()
882 		page_increm = 1 + (~(start >> PAGE_SHIFT) & ctx.page_mask);  in __get_user_pages()
886 		start += page_increm * PAGE_SIZE;  in __get_user_pages()
1000 						unsigned long start,  in __get_user_pages_locked()  argument
1023 		ret = __get_user_pages(tsk, mm, start, nr_pages, flags, pages,  in __get_user_pages_locked()
1056 		start += ret << PAGE_SHIFT;  in __get_user_pages_locked()
1066 		ret = __get_user_pages(tsk, mm, start, 1, flags | FOLL_TRIED,  in __get_user_pages_locked()
1080 		start += PAGE_SIZE;  in __get_user_pages_locked()
1150 		unsigned long start, unsigned long nr_pages,  in get_user_pages_remote()  argument
1163 	return __get_user_pages_locked(tsk, mm, start, nr_pages, pages, vmas,  in get_user_pages_remote()
1189 		unsigned long start, unsigned long end, int *nonblocking)  in populate_vma_page_range()  argument
1192 	unsigned long nr_pages = (end - start) / PAGE_SIZE;  in populate_vma_page_range()
1195 	VM_BUG_ON(start & ~PAGE_MASK);  in populate_vma_page_range()
1197 	VM_BUG_ON_VMA(start < vma->vm_start, vma);  in populate_vma_page_range()
1223 	return __get_user_pages(current, mm, start, nr_pages, gup_flags,  in populate_vma_page_range()
1234 int __mm_populate(unsigned long start, unsigned long len, int ignore_errors)  in __mm_populate()  argument
1242 	end = start + len;  in __mm_populate()
1244 	for (nstart = start; nstart < end; nstart = nend) {  in __mm_populate()
1317 		struct mm_struct *mm, unsigned long start,  in __get_user_pages_locked()  argument
1335 		vma = find_vma(mm, start);  in __get_user_pages_locked()
1345 			pages[i] = virt_to_page(start);  in __get_user_pages_locked()
1351 		start = (start + PAGE_SIZE) & PAGE_MASK;  in __get_user_pages_locked()
1435 					unsigned long start,  in check_and_migrate_cma_pages()  argument
1507 		nr_pages = __get_user_pages_locked(tsk, mm, start, nr_pages,  in check_and_migrate_cma_pages()
1522 					unsigned long start,  in check_and_migrate_cma_pages()  argument
1538 				  unsigned long start,  in __gup_longterm_locked()  argument
1562 	rc = __get_user_pages_locked(tsk, mm, start, nr_pages, pages,  in __gup_longterm_locked()
1577 		rc = check_and_migrate_cma_pages(tsk, mm, start, rc, pages,  in __gup_longterm_locked()
1589 						  unsigned long start,  in __gup_longterm_locked()  argument
1595 	return __get_user_pages_locked(tsk, mm, start, nr_pages, pages, vmas,  in __gup_longterm_locked()
1607 long get_user_pages(unsigned long start, unsigned long nr_pages,  in get_user_pages()  argument
1611 	return __gup_longterm_locked(current, current->mm, start, nr_pages,  in get_user_pages()
1637 long get_user_pages_locked(unsigned long start, unsigned long nr_pages,  in get_user_pages_locked()  argument
1650 	return __get_user_pages_locked(current, current->mm, start, nr_pages,  in get_user_pages_locked()
1671 long get_user_pages_unlocked(unsigned long start, unsigned long nr_pages,  in get_user_pages_unlocked()  argument
1688 	ret = __get_user_pages_locked(current, mm, start, nr_pages, pages, NULL,  in get_user_pages_unlocked()
2305 static bool gup_fast_permitted(unsigned long start, unsigned long end)  in gup_fast_permitted()  argument
2320 int __get_user_pages_fast(unsigned long start, int nr_pages, int write,  in __get_user_pages_fast()  argument
2327 	start = untagged_addr(start) & PAGE_MASK;  in __get_user_pages_fast()
2329 	end = start + len;  in __get_user_pages_fast()
2331 	if (end <= start)  in __get_user_pages_fast()
2333 	if (unlikely(!access_ok((void __user *)start, len)))  in __get_user_pages_fast()
2349 	    gup_fast_permitted(start, end)) {  in __get_user_pages_fast()
2351 		gup_pgd_range(start, end, write ? FOLL_WRITE : 0, pages, &nr);  in __get_user_pages_fast()
2359 static int __gup_longterm_unlocked(unsigned long start, int nr_pages,  in __gup_longterm_unlocked()  argument
2371 					    start, nr_pages,  in __gup_longterm_unlocked()
2375 		ret = get_user_pages_unlocked(start, nr_pages,  in __gup_longterm_unlocked()
2398 int get_user_pages_fast(unsigned long start, int nr_pages,  in get_user_pages_fast()  argument
2407 	start = untagged_addr(start) & PAGE_MASK;  in get_user_pages_fast()
2408 	addr = start;  in get_user_pages_fast()
2410 	end = start + len;  in get_user_pages_fast()
2412 	if (end <= start)  in get_user_pages_fast()
2414 	if (unlikely(!access_ok((void __user *)start, len)))  in get_user_pages_fast()
2418 	    gup_fast_permitted(start, end)) {  in get_user_pages_fast()
2427 		start += nr << PAGE_SHIFT;  in get_user_pages_fast()
2430 		ret = __gup_longterm_unlocked(start, nr_pages - nr,  in get_user_pages_fast()