1387 xdr_buf_subsegment(struct xdr_buf *buf, struct xdr_buf *subbuf,  in xdr_buf_subsegment()  argument
1390 	subbuf->buflen = subbuf->len = len;  in xdr_buf_subsegment()
1392 		subbuf->head[0].iov_base = buf->head[0].iov_base + base;  in xdr_buf_subsegment()
1393 		subbuf->head[0].iov_len = min_t(unsigned int, len,  in xdr_buf_subsegment()
1395 		len -= subbuf->head[0].iov_len;  in xdr_buf_subsegment()
1399 		subbuf->head[0].iov_base = buf->head[0].iov_base;  in xdr_buf_subsegment()
1400 		subbuf->head[0].iov_len = 0;  in xdr_buf_subsegment()
1404 		subbuf->page_len = min(buf->page_len - base, len);  in xdr_buf_subsegment()
1406 		subbuf->page_base = base & ~PAGE_MASK;  in xdr_buf_subsegment()
1407 		subbuf->pages = &buf->pages[base >> PAGE_SHIFT];  in xdr_buf_subsegment()
1408 		len -= subbuf->page_len;  in xdr_buf_subsegment()
1412 		subbuf->pages = buf->pages;  in xdr_buf_subsegment()
1413 		subbuf->page_base = 0;  in xdr_buf_subsegment()
1414 		subbuf->page_len = 0;  in xdr_buf_subsegment()
1418 		subbuf->tail[0].iov_base = buf->tail[0].iov_base + base;  in xdr_buf_subsegment()
1419 		subbuf->tail[0].iov_len = min_t(unsigned int, len,  in xdr_buf_subsegment()
1421 		len -= subbuf->tail[0].iov_len;  in xdr_buf_subsegment()
1425 		subbuf->tail[0].iov_base = buf->tail[0].iov_base;  in xdr_buf_subsegment()
1426 		subbuf->tail[0].iov_len = 0;  in xdr_buf_subsegment()
1476 static void __read_bytes_from_xdr_buf(struct xdr_buf *subbuf, void *obj, unsigned int len)  in __read_bytes_from_xdr_buf()  argument
1480 	this_len = min_t(unsigned int, len, subbuf->head[0].iov_len);  in __read_bytes_from_xdr_buf()
1481 	memcpy(obj, subbuf->head[0].iov_base, this_len);  in __read_bytes_from_xdr_buf()
1484 	this_len = min_t(unsigned int, len, subbuf->page_len);  in __read_bytes_from_xdr_buf()
1486 		_copy_from_pages(obj, subbuf->pages, subbuf->page_base, this_len);  in __read_bytes_from_xdr_buf()
1489 	this_len = min_t(unsigned int, len, subbuf->tail[0].iov_len);  in __read_bytes_from_xdr_buf()
1490 	memcpy(obj, subbuf->tail[0].iov_base, this_len);  in __read_bytes_from_xdr_buf()
1496 	struct xdr_buf subbuf;  in read_bytes_from_xdr_buf()  local
1499 	status = xdr_buf_subsegment(buf, &subbuf, base, len);  in read_bytes_from_xdr_buf()
1502 	__read_bytes_from_xdr_buf(&subbuf, obj, len);  in read_bytes_from_xdr_buf()
1507 static void __write_bytes_to_xdr_buf(struct xdr_buf *subbuf, void *obj, unsigned int len)  in __write_bytes_to_xdr_buf()  argument
1511 	this_len = min_t(unsigned int, len, subbuf->head[0].iov_len);  in __write_bytes_to_xdr_buf()
1512 	memcpy(subbuf->head[0].iov_base, obj, this_len);  in __write_bytes_to_xdr_buf()
1515 	this_len = min_t(unsigned int, len, subbuf->page_len);  in __write_bytes_to_xdr_buf()
1517 		_copy_to_pages(subbuf->pages, subbuf->page_base, obj, this_len);  in __write_bytes_to_xdr_buf()
1520 	this_len = min_t(unsigned int, len, subbuf->tail[0].iov_len);  in __write_bytes_to_xdr_buf()
1521 	memcpy(subbuf->tail[0].iov_base, obj, this_len);  in __write_bytes_to_xdr_buf()
1527 	struct xdr_buf subbuf;  in write_bytes_to_xdr_buf()  local
1530 	status = xdr_buf_subsegment(buf, &subbuf, base, len);  in write_bytes_to_xdr_buf()
1533 	__write_bytes_to_xdr_buf(&subbuf, obj, len);  in write_bytes_to_xdr_buf()