1686 int xdr_buf_subsegment(const struct xdr_buf *buf, struct xdr_buf *subbuf,  in xdr_buf_subsegment()  argument
1689 	subbuf->buflen = subbuf->len = len;  in xdr_buf_subsegment()
1691 		subbuf->head[0].iov_base = buf->head[0].iov_base + base;  in xdr_buf_subsegment()
1692 		subbuf->head[0].iov_len = min_t(unsigned int, len,  in xdr_buf_subsegment()
1694 		len -= subbuf->head[0].iov_len;  in xdr_buf_subsegment()
1698 		subbuf->head[0].iov_base = buf->head[0].iov_base;  in xdr_buf_subsegment()
1699 		subbuf->head[0].iov_len = 0;  in xdr_buf_subsegment()
1703 		subbuf->page_len = min(buf->page_len - base, len);  in xdr_buf_subsegment()
1705 		subbuf->page_base = base & ~PAGE_MASK;  in xdr_buf_subsegment()
1706 		subbuf->pages = &buf->pages[base >> PAGE_SHIFT];  in xdr_buf_subsegment()
1707 		len -= subbuf->page_len;  in xdr_buf_subsegment()
1711 		subbuf->pages = buf->pages;  in xdr_buf_subsegment()
1712 		subbuf->page_base = 0;  in xdr_buf_subsegment()
1713 		subbuf->page_len = 0;  in xdr_buf_subsegment()
1717 		subbuf->tail[0].iov_base = buf->tail[0].iov_base + base;  in xdr_buf_subsegment()
1718 		subbuf->tail[0].iov_len = min_t(unsigned int, len,  in xdr_buf_subsegment()
1720 		len -= subbuf->tail[0].iov_len;  in xdr_buf_subsegment()
1724 		subbuf->tail[0].iov_base = buf->tail[0].iov_base;  in xdr_buf_subsegment()
1725 		subbuf->tail[0].iov_len = 0;  in xdr_buf_subsegment()
1749 bool xdr_stream_subsegment(struct xdr_stream *xdr, struct xdr_buf *subbuf,  in xdr_stream_subsegment()  argument
1756 	if (xdr_buf_subsegment(xdr->buf, subbuf, start, nbytes))  in xdr_stream_subsegment()
1876 static void __read_bytes_from_xdr_buf(const struct xdr_buf *subbuf,  in __read_bytes_from_xdr_buf()  argument
1881 	this_len = min_t(unsigned int, len, subbuf->head[0].iov_len);  in __read_bytes_from_xdr_buf()
1882 	memcpy(obj, subbuf->head[0].iov_base, this_len);  in __read_bytes_from_xdr_buf()
1885 	this_len = min_t(unsigned int, len, subbuf->page_len);  in __read_bytes_from_xdr_buf()
1886 	_copy_from_pages(obj, subbuf->pages, subbuf->page_base, this_len);  in __read_bytes_from_xdr_buf()
1889 	this_len = min_t(unsigned int, len, subbuf->tail[0].iov_len);  in __read_bytes_from_xdr_buf()
1890 	memcpy(obj, subbuf->tail[0].iov_base, this_len);  in __read_bytes_from_xdr_buf()
1897 	struct xdr_buf subbuf;  in read_bytes_from_xdr_buf()  local
1900 	status = xdr_buf_subsegment(buf, &subbuf, base, len);  in read_bytes_from_xdr_buf()
1903 	__read_bytes_from_xdr_buf(&subbuf, obj, len);  in read_bytes_from_xdr_buf()
1908 static void __write_bytes_to_xdr_buf(const struct xdr_buf *subbuf,  in __write_bytes_to_xdr_buf()  argument
1913 	this_len = min_t(unsigned int, len, subbuf->head[0].iov_len);  in __write_bytes_to_xdr_buf()
1914 	memcpy(subbuf->head[0].iov_base, obj, this_len);  in __write_bytes_to_xdr_buf()
1917 	this_len = min_t(unsigned int, len, subbuf->page_len);  in __write_bytes_to_xdr_buf()
1918 	_copy_to_pages(subbuf->pages, subbuf->page_base, obj, this_len);  in __write_bytes_to_xdr_buf()
1921 	this_len = min_t(unsigned int, len, subbuf->tail[0].iov_len);  in __write_bytes_to_xdr_buf()
1922 	memcpy(subbuf->tail[0].iov_base, obj, this_len);  in __write_bytes_to_xdr_buf()
1929 	struct xdr_buf subbuf;  in write_bytes_to_xdr_buf()  local
1932 	status = xdr_buf_subsegment(buf, &subbuf, base, len);  in write_bytes_to_xdr_buf()
1935 	__write_bytes_to_xdr_buf(&subbuf, obj, len);  in write_bytes_to_xdr_buf()