17 static int notifier_chain_register(struct notifier_block **nl,  in notifier_chain_register()  argument
21 	while ((*nl) != NULL) {  in notifier_chain_register()
22 		if (unlikely((*nl) == n)) {  in notifier_chain_register()
27 		if (n->priority > (*nl)->priority)  in notifier_chain_register()
29 		if (n->priority == (*nl)->priority && unique_priority)  in notifier_chain_register()
31 		nl = &((*nl)->next);  in notifier_chain_register()
33 	n->next = *nl;  in notifier_chain_register()
34 	rcu_assign_pointer(*nl, n);  in notifier_chain_register()
39 static int notifier_chain_unregister(struct notifier_block **nl,  in notifier_chain_unregister()  argument
42 	while ((*nl) != NULL) {  in notifier_chain_unregister()
43 		if ((*nl) == n) {  in notifier_chain_unregister()
44 			rcu_assign_pointer(*nl, n->next);  in notifier_chain_unregister()
48 		nl = &((*nl)->next);  in notifier_chain_unregister()
55  *	@nl:		Pointer to head of the blocking notifier chain
65 static int notifier_call_chain(struct notifier_block **nl,  in notifier_call_chain()  argument
72 	nb = rcu_dereference_raw(*nl);  in notifier_call_chain()
102  * @nl:		Pointer to head of the blocking notifier chain
108  * NOTE:	It is important the @nl chain doesn't change between the two
114 static int notifier_call_chain_robust(struct notifier_block **nl,  in notifier_call_chain_robust()  argument
120 	ret = notifier_call_chain(nl, val_up, v, -1, &nr);  in notifier_call_chain_robust()
122 		notifier_call_chain(nl, val_down, v, nr-1, NULL);  in notifier_call_chain_robust()