175 			const struct iovec *iov, unsigned long nr_segs,  in iov_iter_init()  argument
183 		.__iov = iov,  in iov_iter_init()
524 	const struct iovec *iov, *end;  in iov_iter_iovec_advance()  local
531 	for (iov = iter_iov(i), end = iov + i->nr_segs; iov < end; iov++) {  in iov_iter_iovec_advance()
532 		if (likely(size < iov->iov_len))  in iov_iter_iovec_advance()
534 		size -= iov->iov_len;  in iov_iter_iovec_advance()
537 	i->nr_segs -= iov - iter_iov(i);  in iov_iter_iovec_advance()
538 	i->__iov = iov;  in iov_iter_iovec_advance()
655 		const struct iovec *iov = iter_iov(i);  in iov_iter_revert()  local
657 			size_t n = (--iov)->iov_len;  in iov_iter_revert()
660 				i->__iov = iov;  in iov_iter_revert()
801 	const struct iovec *iov = iter_iov(i);  in iov_iter_alignment_iovec()  local
807 		size_t len = iov->iov_len - skip;  in iov_iter_alignment_iovec()
809 			res |= (unsigned long)iov->iov_base + skip;  in iov_iter_alignment_iovec()
815 		iov++;  in iov_iter_alignment_iovec()
882 		const struct iovec *iov = iter_iov(i) + k;  in iov_iter_gap_alignment()  local
883 		if (iov->iov_len) {  in iov_iter_gap_alignment()
884 			unsigned long base = (unsigned long)iov->iov_base;  in iov_iter_gap_alignment()
887 			v = base + iov->iov_len;  in iov_iter_gap_alignment()
888 			if (size <= iov->iov_len)  in iov_iter_gap_alignment()
890 			size -= iov->iov_len;  in iov_iter_gap_alignment()
1035 		const struct iovec *iov = iter_iov(i) + k;  in first_iovec_segment()  local
1036 		size_t len = iov->iov_len - skip;  in first_iovec_segment()
1042 		return (unsigned long)iov->iov_base + skip;  in first_iovec_segment()
1239 static __noclone int copy_compat_iovec_from_user(struct iovec *iov,  in copy_compat_iovec_from_user()  argument
1262 		iov[i].iov_base = compat_ptr(buf);  in copy_compat_iovec_from_user()
1263 		iov[i].iov_len = len;  in copy_compat_iovec_from_user()
1272 static __noclone int copy_iovec_from_user(struct iovec *iov,  in copy_iovec_from_user()  argument
1292 		iov->iov_base = buf;  in copy_iovec_from_user()
1293 		iov->iov_len = len;  in copy_iovec_from_user()
1295 		uiov++; iov++;  in copy_iovec_from_user()
1308 	struct iovec *iov = fast_iov;  in iovec_from_user()  local
1317 		return iov;  in iovec_from_user()
1321 		iov = kmalloc_objs(struct iovec, nr_segs);  in iovec_from_user()
1322 		if (!iov)  in iovec_from_user()
1327 		ret = copy_compat_iovec_from_user(iov, uvec, nr_segs);  in iovec_from_user()
1329 		ret = copy_iovec_from_user(iov, uvec, nr_segs);  in iovec_from_user()
1331 		if (iov != fast_iov)  in iovec_from_user()
1332 			kfree(iov);  in iovec_from_user()
1336 	return iov;  in iovec_from_user()
1346 	struct iovec *iov = *iovp;  in __import_iovec_ubuf()  local
1352 		ret = copy_compat_iovec_from_user(iov, uvec, 1);  in __import_iovec_ubuf()
1354 		ret = copy_iovec_from_user(iov, uvec, 1);  in __import_iovec_ubuf()
1358 	ret = import_ubuf(type, iov->iov_base, iov->iov_len, i);  in __import_iovec_ubuf()
1370 	struct iovec *iov;  in __import_iovec()  local
1375 	iov = iovec_from_user(uvec, nr_segs, fast_segs, *iovp, compat);  in __import_iovec()
1376 	if (IS_ERR(iov)) {  in __import_iovec()
1378 		return PTR_ERR(iov);  in __import_iovec()
1390 		ssize_t len = (ssize_t)iov[seg].iov_len;  in __import_iovec()
1392 		if (!access_ok(iov[seg].iov_base, len)) {  in __import_iovec()
1393 			if (iov != *iovp)  in __import_iovec()
1394 				kfree(iov);  in __import_iovec()
1401 			iov[seg].iov_len = len;  in __import_iovec()
1406 	iov_iter_init(i, type, iov, nr_segs, total_len);  in __import_iovec()
1407 	if (iov == *iovp)  in __import_iovec()
1410 		*iovp = iov;  in __import_iovec()