diff --git a/fs/mount.h b/fs/mount.h
index b8beafdd6d24..c4d417cd7953 100644
--- a/fs/mount.h
+++ b/fs/mount.h
@@ -102,7 +102,7 @@ static inline struct mount *real_mount(struct vfsmount *mnt)
 	return container_of(mnt, struct mount, mnt);
 }
 
-static inline int mnt_has_parent(struct mount *mnt)
+static inline int mnt_has_parent(const struct mount *mnt)
 {
 	return mnt != mnt->mnt_parent;
 }