Index: kernel/generic/include/mm/as.h
===================================================================
--- kernel/generic/include/mm/as.h	(revision 947958124af6213f29135ea2f78f9deee4f7480e)
+++ kernel/generic/include/mm/as.h	(revision 0aae87a68b103134fdc85e357962274d6849b220)
@@ -224,4 +224,7 @@
 	void (* destroy)(as_area_t *);
 
+	bool (* is_resizable)(as_area_t *);
+	bool (* is_shareable)(as_area_t *);
+
 	int (* page_fault)(as_area_t *, uintptr_t, pf_access_t);
 	void (* frame_free)(as_area_t *, uintptr_t, uintptr_t);