vfs: spread struct mount - mnt_has_parent

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/mount.h b/fs/mount.h
index 831e7c8..541daf5 100644
--- a/fs/mount.h
+++ b/fs/mount.h
@@ -10,9 +10,9 @@
 	return container_of(mnt, struct mount, mnt);
 }
 
-static inline int mnt_has_parent(struct vfsmount *mnt)
+static inline int mnt_has_parent(struct mount *mnt)
 {
-	return mnt != mnt->mnt_parent;
+	return &mnt->mnt != mnt->mnt.mnt_parent;
 }
 
 extern struct mount *__lookup_mnt(struct vfsmount *, struct dentry *, int);