Index: kernel/generic/include/mm/frame.h
===================================================================
--- kernel/generic/include/mm/frame.h	(revision 5d853bd372f27f2569aeb163f9263109b8ed73b5)
+++ kernel/generic/include/mm/frame.h	(revision 1433f93ea85f804d4c4908aa91e5de49ad55e6dd)
@@ -67,4 +67,6 @@
 /** Do not start reclaiming when no free memory. */
 #define FRAME_NO_RECLAIM  0x4
+/** Do not reserve / unreserve memory. */
+#define FRAME_NO_RESERVE  0x8
 
 typedef uint8_t zone_flags_t;