24 	struct freelist_node	*head;  member
46 	struct freelist_node *head = READ_ONCE(list->head);  in __freelist_add()  local
49 		WRITE_ONCE(node->next, head);  in __freelist_add()
52 		if (!try_cmpxchg_release(&list->head, &head, node)) {  in __freelist_add()
81 	struct freelist_node *prev, *next, *head = smp_load_acquire(&list->head);  in freelist_try_get()  local
84 	while (head) {  in freelist_try_get()
85 		prev = head;  in freelist_try_get()
86 		refs = atomic_read(&head->refs);  in freelist_try_get()
88 		    !atomic_try_cmpxchg_acquire(&head->refs, &refs, refs+1)) {  in freelist_try_get()
89 			head = smp_load_acquire(&list->head);  in freelist_try_get()
98 		next = READ_ONCE(head->next);  in freelist_try_get()
99 		if (try_cmpxchg_acquire(&list->head, &head, next)) {  in freelist_try_get()
106 			WARN_ON_ONCE(atomic_read(&head->refs) & REFS_ON_FREELIST);  in freelist_try_get()
112 			atomic_fetch_add(-2, &head->refs);  in freelist_try_get()
114 			return head;  in freelist_try_get()