22 static int notifier_chain_register(struct notifier_block **nl,  in notifier_chain_register()  argument
25 	while ((*nl) != NULL) {  in notifier_chain_register()
26 		WARN_ONCE(((*nl) == n), "double register detected");  in notifier_chain_register()
27 		if (n->priority > (*nl)->priority)  in notifier_chain_register()
29 		nl = &((*nl)->next);  in notifier_chain_register()
31 	n->next = *nl;  in notifier_chain_register()
32 	rcu_assign_pointer(*nl, n);  in notifier_chain_register()
36 static int notifier_chain_cond_register(struct notifier_block **nl,  in notifier_chain_cond_register()  argument
39 	while ((*nl) != NULL) {  in notifier_chain_cond_register()
40 		if ((*nl) == n)  in notifier_chain_cond_register()
42 		if (n->priority > (*nl)->priority)  in notifier_chain_cond_register()
44 		nl = &((*nl)->next);  in notifier_chain_cond_register()
46 	n->next = *nl;  in notifier_chain_cond_register()
47 	rcu_assign_pointer(*nl, n);  in notifier_chain_cond_register()
51 static int notifier_chain_unregister(struct notifier_block **nl,  in notifier_chain_unregister()  argument
54 	while ((*nl) != NULL) {  in notifier_chain_unregister()
55 		if ((*nl) == n) {  in notifier_chain_unregister()
56 			rcu_assign_pointer(*nl, n->next);  in notifier_chain_unregister()
59 		nl = &((*nl)->next);  in notifier_chain_unregister()
76 static int notifier_call_chain(struct notifier_block **nl,  in notifier_call_chain()  argument
83 	nb = rcu_dereference_raw(*nl);  in notifier_call_chain()