return !IS_ERR_OR_NULL(real_mount(mnt));
}
-extern struct mount *__lookup_mnt(struct vfsmount *, struct dentry *, int);
+extern struct mount *__lookup_mnt(struct vfsmount *, struct dentry *);
+extern struct mount *__lookup_mnt_last(struct vfsmount *, struct dentry *);
static inline void get_mnt_ns(struct mnt_namespace *ns)
{