From 5ad959bb482a5cc93aeca751f225820846aac37b Mon Sep 17 00:00:00 2001
From: essence-of-the-soul <essence-of-the-soul@users.noreply.gitee.com>
Date: Wed, 5 Aug 2026 11:08:46 +0000
Subject: [PATCH] =?UTF-8?q?fix(#IK2CMT):=20=E7=A7=BB=E9=99=A4=20upgrader.a?=
 =?UTF-8?q?tomicFlag=20=E6=AD=BB=E4=BB=A3=E7=A0=81=E7=B1=BB=E5=9E=8B?=
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关联 issue #IK2CMT
---
 internal/upgrade/upgrader.go | 24 ------------------------
 1 file changed, 24 deletions(-)

diff --git a/internal/upgrade/upgrader.go b/internal/upgrade/upgrader.go
index 7f213ba..d818fe6 100644
--- a/internal/upgrade/upgrader.go
+++ b/internal/upgrade/upgrader.go
@@ -13,7 +13,6 @@ import (
 	"io"
 	"os"
 	"path/filepath"
-	"sync"
 	"sync/atomic"
 	"time"
 
@@ -330,26 +329,3 @@ func UnmarshalReport(b []byte) (Report, error) {
 	}
 	return r, nil
 }
-
-// atomicFlag 是对 sync.Mutex 的极小封装，与 task-manager 端"同时只
-// 允许一个部署"的模式保持对称。导出以备 Stage 5 的文件拉取升级器复用。
-type atomicFlag struct {
-	mu sync.Mutex
-	on bool
-}
-
-func (a *atomicFlag) tryLock() bool {
-	a.mu.Lock()
-	defer a.mu.Unlock()
-	if a.on {
-		return false
-	}
-	a.on = true
-	return true
-}
-
-func (a *atomicFlag) unlock() {
-	a.mu.Lock()
-	a.on = false
-	a.mu.Unlock()
-}
-- 
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