readahead: docbook fix

Minor docbook error since argument name in comment doesn't match function

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/filemap.c b/mm/filemap.c
index 6cf700d..49a6fe3 100644 (file)
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -843,7 +843,7 @@ static void shrink_readahead_size_eio(struct file *filp,
 /**
  * do_generic_mapping_read - generic file read routine
  * @mapping:   address_space to be read
- * @ra:                file's readahead state
+ * @_ra:       file's readahead state
  * @filp:      the file to read
  * @ppos:      current file position
  * @desc:      read_descriptor