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-rw-r--r--block/ll_rw_blk.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/block/ll_rw_blk.c b/block/ll_rw_blk.c
index e07c079e07e6..fb6789725e1b 100644
--- a/block/ll_rw_blk.c
+++ b/block/ll_rw_blk.c
@@ -2453,6 +2453,7 @@ EXPORT_SYMBOL(blk_rq_map_user);
* @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