1602 int xdr_buf_subsegment(const struct xdr_buf *buf, struct xdr_buf *subbuf,  in xdr_buf_subsegment()  argument
1605 	subbuf->buflen = subbuf->len = len;  in xdr_buf_subsegment()
1607 		subbuf->head[0].iov_base = buf->head[0].iov_base + base;  in xdr_buf_subsegment()
1608 		subbuf->head[0].iov_len = min_t(unsigned int, len,  in xdr_buf_subsegment()
1610 		len -= subbuf->head[0].iov_len;  in xdr_buf_subsegment()
1614 		subbuf->head[0].iov_base = buf->head[0].iov_base;  in xdr_buf_subsegment()
1615 		subbuf->head[0].iov_len = 0;  in xdr_buf_subsegment()
1619 		subbuf->page_len = min(buf->page_len - base, len);  in xdr_buf_subsegment()
1621 		subbuf->page_base = base & ~PAGE_MASK;  in xdr_buf_subsegment()
1622 		subbuf->pages = &buf->pages[base >> PAGE_SHIFT];  in xdr_buf_subsegment()
1623 		len -= subbuf->page_len;  in xdr_buf_subsegment()
1627 		subbuf->pages = buf->pages;  in xdr_buf_subsegment()
1628 		subbuf->page_base = 0;  in xdr_buf_subsegment()
1629 		subbuf->page_len = 0;  in xdr_buf_subsegment()
1633 		subbuf->tail[0].iov_base = buf->tail[0].iov_base + base;  in xdr_buf_subsegment()
1634 		subbuf->tail[0].iov_len = min_t(unsigned int, len,  in xdr_buf_subsegment()
1636 		len -= subbuf->tail[0].iov_len;  in xdr_buf_subsegment()
1640 		subbuf->tail[0].iov_base = buf->tail[0].iov_base;  in xdr_buf_subsegment()
1641 		subbuf->tail[0].iov_len = 0;  in xdr_buf_subsegment()
1665 bool xdr_stream_subsegment(struct xdr_stream *xdr, struct xdr_buf *subbuf,  in xdr_stream_subsegment()  argument
1672 	if (xdr_buf_subsegment(xdr->buf, subbuf, start, nbytes))  in xdr_stream_subsegment()
1792 static void __read_bytes_from_xdr_buf(const struct xdr_buf *subbuf,  in __read_bytes_from_xdr_buf()  argument
1797 	this_len = min_t(unsigned int, len, subbuf->head[0].iov_len);  in __read_bytes_from_xdr_buf()
1798 	memcpy(obj, subbuf->head[0].iov_base, this_len);  in __read_bytes_from_xdr_buf()
1801 	this_len = min_t(unsigned int, len, subbuf->page_len);  in __read_bytes_from_xdr_buf()
1802 	_copy_from_pages(obj, subbuf->pages, subbuf->page_base, this_len);  in __read_bytes_from_xdr_buf()
1805 	this_len = min_t(unsigned int, len, subbuf->tail[0].iov_len);  in __read_bytes_from_xdr_buf()
1806 	memcpy(obj, subbuf->tail[0].iov_base, this_len);  in __read_bytes_from_xdr_buf()
1813 	struct xdr_buf subbuf;  in read_bytes_from_xdr_buf()  local
1816 	status = xdr_buf_subsegment(buf, &subbuf, base, len);  in read_bytes_from_xdr_buf()
1819 	__read_bytes_from_xdr_buf(&subbuf, obj, len);  in read_bytes_from_xdr_buf()
1824 static void __write_bytes_to_xdr_buf(const struct xdr_buf *subbuf,  in __write_bytes_to_xdr_buf()  argument
1829 	this_len = min_t(unsigned int, len, subbuf->head[0].iov_len);  in __write_bytes_to_xdr_buf()
1830 	memcpy(subbuf->head[0].iov_base, obj, this_len);  in __write_bytes_to_xdr_buf()
1833 	this_len = min_t(unsigned int, len, subbuf->page_len);  in __write_bytes_to_xdr_buf()
1834 	_copy_to_pages(subbuf->pages, subbuf->page_base, obj, this_len);  in __write_bytes_to_xdr_buf()
1837 	this_len = min_t(unsigned int, len, subbuf->tail[0].iov_len);  in __write_bytes_to_xdr_buf()
1838 	memcpy(subbuf->tail[0].iov_base, obj, this_len);  in __write_bytes_to_xdr_buf()
1845 	struct xdr_buf subbuf;  in write_bytes_to_xdr_buf()  local
1848 	status = xdr_buf_subsegment(buf, &subbuf, base, len);  in write_bytes_to_xdr_buf()
1851 	__write_bytes_to_xdr_buf(&subbuf, obj, len);  in write_bytes_to_xdr_buf()