116 static int queue_get(struct ring_buffer *rb, void **mem_block, size_t *size)  in queue_get()  argument
122 	if (rb->tail == rb->head) {  in queue_get()
128 	*mem_block = rb->buf[rb->tail].mem_block;  in queue_get()
129 	*size = rb->buf[rb->tail].size;  in queue_get()
130 	MODULO_INC(rb->tail, rb->len);  in queue_get()
140 static int queue_put(struct ring_buffer *rb, void *mem_block, size_t size)  in queue_put()  argument
147 	head_next = rb->head;  in queue_put()
148 	MODULO_INC(head_next, rb->len);  in queue_put()
150 	if (head_next == rb->tail) {  in queue_put()
156 	rb->buf[rb->head].mem_block = mem_block;  in queue_put()
157 	rb->buf[rb->head].size = size;  in queue_put()
158 	rb->head = head_next;  in queue_put()