diff --git a/g/os/gcfg/gcfg.go b/g/os/gcfg/gcfg.go
index 6b8d4fedc..721e2a2e8 100644
--- a/g/os/gcfg/gcfg.go
+++ b/g/os/gcfg/gcfg.go
@@ -269,7 +269,7 @@ func (c *Config) getJson(file...string) *gjson.Json {
             // Add monitor for this configuration file,
             // any changes of this file will refresh its cache in Config object.
             if filePath != "" {
-                gfsnotify.Add(filePath, func(event *gfsnotify.Event) {
+                _, _ = gfsnotify.Add(filePath, func(event *gfsnotify.Event) {
                     c.jsons.Remove(name)
                 })
             }
diff --git a/g/os/gflock/gflock.go b/g/os/gflock/gflock.go
index 0cb17c9e9..357403b55 100644
--- a/g/os/gflock/gflock.go
+++ b/g/os/gflock/gflock.go
@@ -4,9 +4,7 @@
 // If a copy of the MIT was not distributed with this file,
 // You can obtain one at https://github.com/gogf/gf.
 
-// Package gflock implements a thread-safe sync.Locker interface for file locking.
-// 
-// 文件锁.
+// Package gflock implements a concurrent-safe sync.Locker interface for file locking.
 package gflock
 
 import (
@@ -15,17 +13,18 @@ import (
     "github.com/gogf/gf/g/os/gfile"
 )
 
-// 文件锁
+// File locker.
 type Locker struct {
     mu    sync.RWMutex // 用于外部接口调用的互斥锁(阻塞机制)
     flock *flock.Flock // 底层文件锁对象
 }
 
-// 创建文件锁
+// New creates and returns a new file locker with given <file>.
+// The parameter <file> usually is a absolute file path.
 func New(file string) *Locker {
     dir := gfile.TempDir() + gfile.Separator + "gflock"
     if !gfile.Exists(dir) {
-        gfile.Mkdir(dir)
+        _ = gfile.Mkdir(dir)
     }
     path := dir + gfile.Separator + file
     lock := flock.NewFlock(path)
@@ -34,16 +33,18 @@ func New(file string) *Locker {
     }
 }
 
+// Path returns the file path of the locker.
 func (l *Locker) Path() string {
     return l.flock.Path()
 }
 
-// 当前文件锁是否处于锁定状态(Lock)
+// IsLocked returns whether the locker is locked.
 func (l *Locker) IsLocked() bool {
     return l.flock.Locked()
 }
 
-// 尝试Lock文件，如果失败立即返回
+// TryLock tries get the writing lock of the locker.
+// It returns true if success, or else returns false immediately.
 func (l *Locker) TryLock() bool {
     ok, _ := l.flock.TryLock()
     if ok {
@@ -52,7 +53,8 @@ func (l *Locker) TryLock() bool {
     return ok
 }
 
-// 尝试RLock文件，如果失败立即返回
+// TryRLock tries get the reading lock of the locker.
+// It returns true if success, or else returns false immediately.
 func (l *Locker) TryRLock() bool {
     ok, _ := l.flock.TryRLock()
     if ok {
@@ -61,22 +63,26 @@ func (l *Locker) TryRLock() bool {
     return ok
 }
 
-func (l *Locker) Lock() {
+func (l *Locker) Lock() (err error) {
     l.mu.Lock()
-    l.flock.Lock()
+    err = l.flock.Lock()
+    return
 }
 
-func (l *Locker) UnLock() {
-    l.flock.Unlock()
+func (l *Locker) UnLock() (err error) {
+    err = l.flock.Unlock()
     l.mu.Unlock()
+    return
 }
 
-func (l *Locker) RLock() {
+func (l *Locker) RLock() (err error) {
     l.mu.RLock()
-    l.flock.RLock()
+    err = l.flock.RLock()
+    return
 }
 
-func (l *Locker) RUnlock() {
-    l.flock.Unlock()
+func (l *Locker) RUnlock() (err error) {
+    err = l.flock.Unlock()
     l.mu.RUnlock()
+    return
 }
diff --git a/g/os/gfpool/gfpool.go b/g/os/gfpool/gfpool.go
index e904a79e2..814b597d1 100644
--- a/g/os/gfpool/gfpool.go
+++ b/g/os/gfpool/gfpool.go
@@ -93,7 +93,7 @@ func newFilePool(p *Pool, path string, flag int, perm os.FileMode, expire int) *
             path   : path,
         }, nil
     }, func(i interface{}) {
-        i.(*File).File.Close()
+        _ = i.(*File).File.Close()
     })
     return pool
 }
@@ -136,7 +136,7 @@ func (p *Pool) File() (*File, error) {
         // 优先使用 !p.inited.Val() 原子读取操作判断，保证判断操作的效率；
         // p.inited.Set(true) == false 使用原子写入操作，保证该操作的原子性；
         if !p.inited.Val() && p.inited.Set(true) == false {
-            gfsnotify.Add(f.path, func(event *gfsnotify.Event) {
+            _, _ = gfsnotify.Add(f.path, func(event *gfsnotify.Event) {
                 // 如果文件被删除或者重命名，立即重建指针池
                 if event.IsRemove() || event.IsRename() {
                     // 原有的指针都不要了