Index: generic/include/proc/task.h
===================================================================
--- generic/include/proc/task.h	(revision 5be19237d21f74d46fb963baab938dd33e90755e)
+++ generic/include/proc/task.h	(revision 5f62ef99a9c5aa3020510303c82ab8fcbfa0b83b)
@@ -41,6 +41,8 @@
 	link_t tasks_link;	/**< Link to other tasks within the system. */
 	as_t *as;		/**< Address space. */
+	/* IPC stuff */
 	answerbox_t answerbox;  /**< Communication endpoint */
 	phone_t phones[IPC_MAX_PHONES];
+	atomic_t active_calls;  /**< Active asynchronous messages */
 };