Lines Matching refs:subbuf
1373 * xdr_buf_subsegment - set subbuf to a portion of buf
1375 * @subbuf: the result buffer
1379 * sets @subbuf to an xdr buffer representing the portion of @buf of
1382 * @buf and @subbuf may be pointers to the same struct xdr_buf.
1387 xdr_buf_subsegment(struct xdr_buf *buf, struct xdr_buf *subbuf,
1390 subbuf->buflen = subbuf->len = len;
1392 subbuf->head[0].iov_base = buf->head[0].iov_base + base;
1393 subbuf->head[0].iov_len = min_t(unsigned int, len,
1395 len -= subbuf->head[0].iov_len;
1399 subbuf->head[0].iov_base = buf->head[0].iov_base;
1400 subbuf->head[0].iov_len = 0;
1404 subbuf->page_len = min(buf->page_len - base, len);
1406 subbuf->page_base = base & ~PAGE_MASK;
1407 subbuf->pages = &buf->pages[base >> PAGE_SHIFT];
1408 len -= subbuf->page_len;
1412 subbuf->pages = buf->pages;
1413 subbuf->page_base = 0;
1414 subbuf->page_len = 0;
1418 subbuf->tail[0].iov_base = buf->tail[0].iov_base + base;
1419 subbuf->tail[0].iov_len = min_t(unsigned int, len,
1421 len -= subbuf->tail[0].iov_len;
1425 subbuf->tail[0].iov_base = buf->tail[0].iov_base;
1426 subbuf->tail[0].iov_len = 0;
1476 static void __read_bytes_from_xdr_buf(struct xdr_buf *subbuf, void *obj, unsigned int len)
1480 this_len = min_t(unsigned int, len, subbuf->head[0].iov_len);
1481 memcpy(obj, subbuf->head[0].iov_base, this_len);
1484 this_len = min_t(unsigned int, len, subbuf->page_len);
1486 _copy_from_pages(obj, subbuf->pages, subbuf->page_base, this_len);
1489 this_len = min_t(unsigned int, len, subbuf->tail[0].iov_len);
1490 memcpy(obj, subbuf->tail[0].iov_base, this_len);
1496 struct xdr_buf subbuf;
1499 status = xdr_buf_subsegment(buf, &subbuf, base, len);
1502 __read_bytes_from_xdr_buf(&subbuf, obj, len);
1507 static void __write_bytes_to_xdr_buf(struct xdr_buf *subbuf, void *obj, unsigned int len)
1511 this_len = min_t(unsigned int, len, subbuf->head[0].iov_len);
1512 memcpy(subbuf->head[0].iov_base, obj, this_len);
1515 this_len = min_t(unsigned int, len, subbuf->page_len);
1517 _copy_to_pages(subbuf->pages, subbuf->page_base, obj, this_len);
1520 this_len = min_t(unsigned int, len, subbuf->tail[0].iov_len);
1521 memcpy(subbuf->tail[0].iov_base, obj, this_len);
1527 struct xdr_buf subbuf;
1530 status = xdr_buf_subsegment(buf, &subbuf, base, len);
1533 __write_bytes_to_xdr_buf(&subbuf, obj, len);