diff --git a/kernel/model/backup.go b/kernel/model/backup.go
index 3593d7e54..4eab44826 100644
--- a/kernel/model/backup.go
+++ b/kernel/model/backup.go
@@ -344,7 +344,7 @@ func DownloadBackup() (err error) {
 	localDirPath := Conf.Backup.GetSaveDir()
 	util.PushEndlessProgress(Conf.Language(68))
 	start := time.Now()
-	fetchedFilesCount, transferSize, _, err := ossDownload(localDirPath, "backup", false, map[string]bool{}, map[string]bool{})
+	fetchedFilesCount, transferSize, _, err := ossDownload(localDirPath, "backup", false)
 	if nil == err {
 		elapsed := time.Now().Sub(start).Seconds()
 		util.LogInfof("downloaded backup [fetchedFiles=%d, transferSize=%s] in [%.2fs]", fetchedFilesCount, humanize.Bytes(transferSize), elapsed)
@@ -364,7 +364,7 @@ func UploadBackup() (err error) {
 	util.PushEndlessProgress(Conf.Language(61))
 	util.LogInfof("uploading backup...")
 	start := time.Now()
-	wroteFiles, transferSize, err := ossUpload(true, localDirPath, "backup", "not exist", false, map[string]bool{}, map[string]bool{})
+	wroteFiles, transferSize, err := ossUpload(true, localDirPath, "backup", "not exist", false)
 	if nil == err {
 		elapsed := time.Now().Sub(start).Seconds()
 		util.LogInfof("uploaded backup [wroteFiles=%d, transferSize=%s] in [%.2fs]", wroteFiles, humanize.Bytes(transferSize), elapsed)
diff --git a/kernel/model/osssync.go b/kernel/model/osssync.go
index 50b0b9785..0c7d847c1 100644
--- a/kernel/model/osssync.go
+++ b/kernel/model/osssync.go
@@ -162,7 +162,7 @@ func listCloudSyncDirOSS() (dirs []map[string]interface{}, size int64, err error
 	return
 }
 
-func ossDownload(localDirPath, cloudDirPath string, bootOrExit bool, removeList, upsertList map[string]bool) (fetchedFilesCount int, transferSize uint64, downloadedFiles map[string]bool, err error) {
+func ossDownload(localDirPath, cloudDirPath string, bootOrExit bool) (fetchedFilesCount int, transferSize uint64, downloadedFiles map[string]bool, err error) {
 	if !gulu.File.IsExist(localDirPath) {
 		return
 	}
@@ -340,7 +340,7 @@ func ossDownload0(localDirPath, cloudDirPath, fetch string, fetchedFiles *int, t
 	return
 }
 
-func ossUpload(isBackup bool, localDirPath, cloudDirPath, cloudDevice string, boot bool, removeList, upsertList map[string]bool) (wroteFiles int, transferSize uint64, err error) {
+func ossUpload(isBackup bool, localDirPath, cloudDirPath, cloudDevice string, boot bool) (wroteFiles int, transferSize uint64, err error) {
 	if !gulu.File.IsExist(localDirPath) {
 		return
 	}
diff --git a/kernel/model/sync.go b/kernel/model/sync.go
index 3caad4eaa..c4955e592 100644
--- a/kernel/model/sync.go
+++ b/kernel/model/sync.go
@@ -135,9 +135,8 @@ func SyncData(boot, exit, byHand bool) {
 	WaitForWritingFiles()
 	writingDataLock.Lock()
 	var err error
-	var removeList, upsertList map[string]bool
 	// 将 data 变更同步到 sync
-	if removeList, upsertList, err = workspaceData2SyncDir(); nil != err {
+	if _, _, err = workspaceData2SyncDir(); nil != err {
 		msg := fmt.Sprintf(Conf.Language(80), formatErrorMsg(err))
 		Conf.Sync.Stat = msg
 		util.PushErrMsg(msg, 7000)
@@ -246,7 +245,7 @@ func SyncData(boot, exit, byHand bool) {
 			return
 		}
 
-		wroteFiles, transferSize, err := ossUpload(false, localSyncDirPath, "sync/"+Conf.Sync.CloudName, device, boot, removeList, upsertList)
+		wroteFiles, transferSize, err := ossUpload(false, localSyncDirPath, "sync/"+Conf.Sync.CloudName, device, boot)
 		if nil != err {
 			util.PushClearProgress()
 			IncWorkspaceDataVer() // 上传失败的话提升本地版本，以备下次上传
@@ -329,7 +328,7 @@ func SyncData(boot, exit, byHand bool) {
 		return
 	}
 
-	fetchedFilesCount, transferSize, downloadedFiles, err := ossDownload(localSyncDirPath, "sync/"+Conf.Sync.CloudName, boot || exit, removeList, upsertList)
+	fetchedFilesCount, transferSize, downloadedFiles, err := ossDownload(localSyncDirPath, "sync/"+Conf.Sync.CloudName, boot || exit)
 	if nil != err {
 		util.PushClearProgress()
 		msg := fmt.Sprintf(Conf.Language(80), formatErrorMsg(err))