49 	 * hierarchy = NULL  in create_ruleset()
310 static void get_hierarchy(struct landlock_hierarchy *const hierarchy)  in get_hierarchy()  argument
312 	if (hierarchy)  in get_hierarchy()
313 		refcount_inc(&hierarchy->usage);  in get_hierarchy()
316 static void put_hierarchy(struct landlock_hierarchy *hierarchy)  in put_hierarchy()  argument
318 	while (hierarchy && refcount_dec_and_test(&hierarchy->usage)) {  in put_hierarchy()
319 		const struct landlock_hierarchy *const freeme = hierarchy;  in put_hierarchy()
321 		hierarchy = hierarchy->parent;  in put_hierarchy()
378 	if (WARN_ON_ONCE(!dst || !dst->hierarchy))  in merge_ruleset()
476 	if (WARN_ON_ONCE(!parent->hierarchy)) {  in inherit_ruleset()
480 	get_hierarchy(parent->hierarchy);  in inherit_ruleset()
481 	child->hierarchy->parent = parent->hierarchy;  in inherit_ruleset()
504 	put_hierarchy(ruleset->hierarchy);  in free_ruleset()
565 	new_dom->hierarchy =  in landlock_merge_ruleset()
566 		kzalloc(sizeof(*new_dom->hierarchy), GFP_KERNEL_ACCOUNT);  in landlock_merge_ruleset()
567 	if (!new_dom->hierarchy)  in landlock_merge_ruleset()
570 	refcount_set(&new_dom->hierarchy->usage, 1);  in landlock_merge_ruleset()