1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/cdev.h b/include/linux/cdev.h
index 2216638962d2..ee5f53f2ca15 100644
--- a/include/linux/cdev.h
+++ b/include/linux/cdev.h
@@ -23,5 +23,7 @@ void cdev_del(struct cdev *);
 
 void cd_forget(struct inode *);
 
+extern struct backing_dev_info directly_mappable_cdev_bdi;
+
 #endif
 #endif