extern int cifs_invalidate_mapping(struct inode *inode);
extern int cifs_revalidate_mapping(struct inode *inode);
extern int cifs_zap_mapping(struct inode *inode);
-extern int cifs_getattr(struct user_namespace *, const struct path *,
+extern int cifs_getattr(struct mnt_idmap *, const struct path *,
struct kstat *, u32, unsigned int);
extern int cifs_setattr(struct mnt_idmap *, struct dentry *,
struct iattr *);