diff --git a/unix/ztypes_linux_arm.go b/unix/ztypes_linux_arm.go
index 817ac9c2..35f11bd1 100644
--- a/unix/ztypes_linux_arm.go
+++ b/unix/ztypes_linux_arm.go
@@ -1,6 +1,6 @@
 // +build arm,linux
 // Created by cgo -godefs - DO NOT EDIT
-// cgo -godefs types_linux.go
+// cgo -godefs types_linux.go | go run mkpost.go
 
 package unix
 
@@ -155,6 +155,15 @@ type Flock_t struct {
 	Pad_cgo_1 [4]byte
 }
 
+const (
+	FADV_NORMAL     = 0x0
+	FADV_RANDOM     = 0x1
+	FADV_SEQUENTIAL = 0x2
+	FADV_WILLNEED   = 0x3
+	FADV_DONTNEED   = 0x4
+	FADV_NOREUSE    = 0x5
+)
+
 type RawSockaddrInet4 struct {
 	Family uint16
 	Port   uint16