[PATCH] fix kernel-doc warnings in 2.6.20-rc1

Fix kernel-doc warnings in 2.6.20-rc1.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c
index e07c079..fb67897 100644
--- a/block/ll_rw_blk.c
+++ b/block/ll_rw_blk.c
@@ -2453,6 +2453,7 @@
  * @rq:		request to map data to
  * @iov:	pointer to the iovec
  * @iov_count:	number of elements in the iovec
+ * @len:	I/O byte count
  *
  * Description:
  *    Data will be mapped directly for zero copy io, if possible. Otherwise