diff --git a/fs/internal.h b/fs/internal.h
index e43b9a4..9687c2e 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -63,6 +63,7 @@
 
 extern void free_vfsmnt(struct vfsmount *);
 extern struct vfsmount *alloc_vfsmnt(const char *);
+extern unsigned int mnt_get_count(struct vfsmount *mnt);
 extern struct vfsmount *__lookup_mnt(struct vfsmount *, struct dentry *, int);
 extern void mnt_set_mountpoint(struct vfsmount *, struct dentry *,
 				struct vfsmount *);