109 static struct xs_handle xs_state;  variable
171 	spin_lock(&xs_state.reply_lock);  in read_reply()
173 	while (list_empty(&xs_state.reply_list)) {  in read_reply()
174 		spin_unlock(&xs_state.reply_lock);  in read_reply()
177 			wait_event_timeout(xs_state.reply_waitq,  in read_reply()
178 					   !list_empty(&xs_state.reply_list),  in read_reply()
189 		spin_lock(&xs_state.reply_lock);  in read_reply()
192 	msg = list_entry(xs_state.reply_list.next,  in read_reply()
196 	spin_unlock(&xs_state.reply_lock);  in read_reply()
210 	mutex_lock(&xs_state.transaction_mutex);  in transaction_start()
211 	atomic_inc(&xs_state.transaction_count);  in transaction_start()
212 	mutex_unlock(&xs_state.transaction_mutex);  in transaction_start()
217 	if (atomic_dec_and_test(&xs_state.transaction_count))  in transaction_end()
218 		wake_up(&xs_state.transaction_wq);  in transaction_end()
223 	mutex_lock(&xs_state.transaction_mutex);  in transaction_suspend()
224 	wait_event(xs_state.transaction_wq,  in transaction_suspend()
225 		   atomic_read(&xs_state.transaction_count) == 0);  in transaction_suspend()
230 	mutex_unlock(&xs_state.transaction_mutex);  in transaction_resume()
242 	mutex_lock(&xs_state.request_mutex);  in xenbus_dev_request_and_reply()
251 	mutex_unlock(&xs_state.request_mutex);  in xenbus_dev_request_and_reply()
284 	mutex_lock(&xs_state.request_mutex);  in xs_talkv()
288 		mutex_unlock(&xs_state.request_mutex);  in xs_talkv()
295 			mutex_unlock(&xs_state.request_mutex);  in xs_talkv()
302 	mutex_unlock(&xs_state.request_mutex);  in xs_talkv()
707 	down_read(&xs_state.watch_mutex);  in register_xenbus_watch()
722 	up_read(&xs_state.watch_mutex);  in register_xenbus_watch()
736 	down_read(&xs_state.watch_mutex);  in unregister_xenbus_watch()
747 	up_read(&xs_state.watch_mutex);  in unregister_xenbus_watch()
773 	down_write(&xs_state.watch_mutex);  in xs_suspend()
774 	mutex_lock(&xs_state.request_mutex);  in xs_suspend()
775 	mutex_lock(&xs_state.response_mutex);  in xs_suspend()
785 	mutex_unlock(&xs_state.response_mutex);  in xs_resume()
786 	mutex_unlock(&xs_state.request_mutex);  in xs_resume()
795 	up_write(&xs_state.watch_mutex);  in xs_resume()
800 	mutex_unlock(&xs_state.response_mutex);  in xs_suspend_cancel()
801 	mutex_unlock(&xs_state.request_mutex);  in xs_suspend_cancel()
802 	up_write(&xs_state.watch_mutex);  in xs_suspend_cancel()
803 	mutex_unlock(&xs_state.transaction_mutex);  in xs_suspend_cancel()
856 		mutex_lock(&xs_state.response_mutex);  in process_msg()
860 		mutex_unlock(&xs_state.response_mutex);  in process_msg()
921 		spin_lock(&xs_state.reply_lock);  in process_msg()
922 		list_add_tail(&msg->list, &xs_state.reply_list);  in process_msg()
923 		spin_unlock(&xs_state.reply_lock);  in process_msg()
924 		wake_up(&xs_state.reply_waitq);  in process_msg()
928 	mutex_unlock(&xs_state.response_mutex);  in process_msg()
952 	INIT_LIST_HEAD(&xs_state.reply_list);  in xs_init()
953 	spin_lock_init(&xs_state.reply_lock);  in xs_init()
954 	init_waitqueue_head(&xs_state.reply_waitq);  in xs_init()
956 	mutex_init(&xs_state.request_mutex);  in xs_init()
957 	mutex_init(&xs_state.response_mutex);  in xs_init()
958 	mutex_init(&xs_state.transaction_mutex);  in xs_init()
959 	init_rwsem(&xs_state.watch_mutex);  in xs_init()
960 	atomic_set(&xs_state.transaction_count, 0);  in xs_init()
961 	init_waitqueue_head(&xs_state.transaction_wq);  in xs_init()