From 5b28c3f728cef64d8469c34860363f17d70a90f4 Mon Sep 17 00:00:00 2001
From: Konstantin Lebedev <9497591+kmlebedev@users.noreply.github.com>
Date: Mon, 10 Oct 2022 19:28:02 +0500
Subject: [PATCH] revert disabling FSync for non Mac (#3814)

---
 weed/storage/backend/disk_file.go | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/weed/storage/backend/disk_file.go b/weed/storage/backend/disk_file.go
index 0dd153d5d..7a3a40977 100644
--- a/weed/storage/backend/disk_file.go
+++ b/weed/storage/backend/disk_file.go
@@ -4,6 +4,7 @@ import (
 	"github.com/seaweedfs/seaweedfs/weed/glog"
 	. "github.com/seaweedfs/seaweedfs/weed/storage/types"
 	"os"
+	"runtime"
 	"time"
 )
 
@@ -11,6 +12,8 @@ var (
 	_ BackendStorageFile = &DiskFile{}
 )
 
+const isMac = runtime.GOOS == "darwin"
+
 type DiskFile struct {
 	File         *os.File
 	fullFilePath string
@@ -81,6 +84,11 @@ func (df *DiskFile) Name() string {
 }
 
 func (df *DiskFile) Sync() error {
-	return nil
-	// return df.File.Sync()
+	if df.File == nil {
+		return os.ErrInvalid
+	}
+	if isMac {
+		return nil
+	}
+	return df.File.Sync()
 }