xnu-1699.22.81.tar.gz

[apple/xnu.git] / osfmk / mach / vm_behavior.h

diff --git a/osfmk/mach/vm_behavior.h b/osfmk/mach/vm_behavior.h
index 0d12ceef6df156950142ab632b6294c53d02c624..ec0ee729ccdeb750c57b6307271150391c0caef8 100644 (file)
--- a/osfmk/mach/vm_behavior.h
+++ b/osfmk/mach/vm_behavior.h
@@ -54,11 +54,25 @@ typedef int         vm_behavior_t;
  */
 
 
+/*
+ * The following behaviors affect the memory region's future behavior
+ * and are stored in the VM map entry data structure.
+ */
 #define VM_BEHAVIOR_DEFAULT    ((vm_behavior_t) 0)     /* default */
 #define VM_BEHAVIOR_RANDOM     ((vm_behavior_t) 1)     /* random */
 #define VM_BEHAVIOR_SEQUENTIAL ((vm_behavior_t) 2)     /* forward sequential */
 #define VM_BEHAVIOR_RSEQNTL    ((vm_behavior_t) 3)     /* reverse sequential */
+
+/*
+ * The following "behaviors" affect the memory region only at the time of the
+ * call and are not stored in the VM map entry.
+ */
 #define VM_BEHAVIOR_WILLNEED   ((vm_behavior_t) 4)     /* will need in near future */
 #define VM_BEHAVIOR_DONTNEED   ((vm_behavior_t) 5)     /* dont need in near future */
+#define VM_BEHAVIOR_FREE       ((vm_behavior_t) 6)     /* free memory without write-back */
+#define VM_BEHAVIOR_ZERO_WIRED_PAGES   ((vm_behavior_t) 7)     /* zero out the wired pages of an entry if it is being deleted without unwiring them first */
+#define VM_BEHAVIOR_REUSABLE   ((vm_behavior_t) 8)
+#define VM_BEHAVIOR_REUSE      ((vm_behavior_t) 9)
+#define VM_BEHAVIOR_CAN_REUSE  ((vm_behavior_t) 10)
 
 #endif /*_MACH_VM_BEHAVIOR_H_*/