322 	struct landlock_rule *walker_rule, *next_rule;  in merge_tree()  local
335 	rbtree_postorder_for_each_entry_safe(walker_rule, next_rule, src_root,  in merge_tree()
341 			.key = walker_rule->key,  in merge_tree()
345 		if (WARN_ON_ONCE(walker_rule->num_layers != 1))  in merge_tree()
348 		if (WARN_ON_ONCE(walker_rule->layers[0].level != 0))  in merge_tree()
351 		layers[0].access = walker_rule->layers[0].access;  in merge_tree()
407 	struct landlock_rule *walker_rule, *next_rule;  in inherit_tree()  local
420 	rbtree_postorder_for_each_entry_safe(walker_rule, next_rule,  in inherit_tree()
423 			.key = walker_rule->key,  in inherit_tree()
427 		err = insert_rule(child, id, &walker_rule->layers,  in inherit_tree()
428 				  walker_rule->num_layers);  in inherit_tree()