327 	struct landlock_rule *walker_rule, *next_rule;  in merge_tree()  local
340 	rbtree_postorder_for_each_entry_safe(walker_rule, next_rule, src_root,  in merge_tree()
346 			.key = walker_rule->key,  in merge_tree()
350 		if (WARN_ON_ONCE(walker_rule->num_layers != 1))  in merge_tree()
353 		if (WARN_ON_ONCE(walker_rule->layers[0].level != 0))  in merge_tree()
356 		layers[0].access = walker_rule->layers[0].access;  in merge_tree()
411 	struct landlock_rule *walker_rule, *next_rule;  in inherit_tree()  local
424 	rbtree_postorder_for_each_entry_safe(walker_rule, next_rule,  in inherit_tree()
427 			.key = walker_rule->key,  in inherit_tree()
431 		err = insert_rule(child, id, &walker_rule->layers,  in inherit_tree()
432 				  walker_rule->num_layers);  in inherit_tree()