2.6.26-rc1

 mm

diff --git a/mm/readahead.c b/mm/readahead.c
index 8762e89..d8723a5 100644
--- a/mm/readahead.c
+++ b/mm/readahead.c
@@ -235,7 +235,13 @@ unsigned long max_sane_readahead(unsigned long nr)
 
 static int __init readahead_init(void)
 {
-   return bdi_init(&default_backing_dev_info);
+   int err;
+
+   err = bdi_init(&default_backing_dev_info);
+   if (!err)
+      bdi_register(&default_backing_dev_info, NULL, "default");
+
+   return err;
 }
 subsys_initcall(readahead_init);