From 886bffd986fbb7be149e7df3bda65331a74db0b8 Mon Sep 17 00:00:00 2001
From: Andrei Gherzan <andrei@resin.io>
Date: Fri, 10 Aug 2018 19:22:34 +0100
Subject: [PATCH] unix: implement SyncFileRange for ARM

---
 unix/syscall_linux_arm.go  |  1 +
 unix/zsyscall_linux_arm.go | 10 ++++++++++
 2 files changed, 11 insertions(+)

diff --git a/unix/syscall_linux_arm.go b/unix/syscall_linux_arm.go
index 3ec7a932..fb9b906e 100644
--- a/unix/syscall_linux_arm.go
+++ b/unix/syscall_linux_arm.go
@@ -141,6 +141,7 @@ func Fadvise(fd int, offset int64, length int64, advice int) (err error) {
 }
 
 //sys	mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset uintptr) (xaddr uintptr, err error)
+//sys	SyncFileRange(fd int, off int64, n int64, flags int) (err error) = SYS_ARM_SYNC_FILE_RANGE
 
 func Fstatfs(fd int, buf *Statfs_t) (err error) {
 	_, _, e := Syscall(SYS_FSTATFS64, uintptr(fd), unsafe.Sizeof(*buf), uintptr(unsafe.Pointer(buf)))
diff --git a/unix/zsyscall_linux_arm.go b/unix/zsyscall_linux_arm.go
index d29a11c9..0231d033 100644
--- a/unix/zsyscall_linux_arm.go
+++ b/unix/zsyscall_linux_arm.go
@@ -2177,6 +2177,16 @@ func mmap2(addr uintptr, length uintptr, prot int, flags int, fd int, pageOffset
 
 // THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
 
+func SyncFileRange(fd int, off int64, n int64, flags int) (err error) {
+	_, _, e1 := Syscall9(SYS_ARM_SYNC_FILE_RANGE, uintptr(fd), 0, uintptr(off), uintptr(off>>32), uintptr(n), uintptr(n>>32), uintptr(flags), 0, 0)
+	if e1 != 0 {
+		err = errnoErr(e1)
+	}
+	return
+}
+
+// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT
+
 func getrlimit(resource int, rlim *rlimit32) (err error) {
 	_, _, e1 := RawSyscall(SYS_UGETRLIMIT, uintptr(resource), uintptr(unsafe.Pointer(rlim)), 0)
 	if e1 != 0 {