--- a/fs/overlayfs/overlayfs.h
+++ b/fs/overlayfs/overlayfs.h
@@ -33,7 +33,6 @@
 void ovl_dentry_set_opaque(struct dentry *dentry, bool opaque);
 bool ovl_is_whiteout(struct dentry *dentry);
 void ovl_dentry_update(struct dentry *dentry, struct dentry *upperdentry);
-void ovl_dentry_set_opaque(struct dentry *dentry, bool opaque);
 int ovl_do_lookup(struct dentry *dentry);
 
 struct dentry *ovl_upper_create(struct dentry *upperdir, struct dentry *dentry,