Ensure compatibility with Go1.24

Signed-off-by: Paulo Gomes <pjbgf@linux.com>

Author: pjbgf

osfs/os_bench_test.go

@@ -21,7 +21,7 @@ func BenchmarkOpen(b *testing.B) {
 	root, err := os.OpenRoot(baseDir)
 	require.NoError(b, err)
 
-	err = root.WriteFile(fileName, []byte("test"), 0o600)
+	err = os.WriteFile(fileName, []byte("test"), 0o600)
 	require.NoError(b, err)
 
 	m := memfs.New()
@@ -45,12 +45,10 @@ func BenchmarkOpen(b *testing.B) {
 func BenchmarkReaddir(b *testing.B) {
 	b.StopTimer()
 	baseDir := b.TempDir()
-	root, err := os.OpenRoot(baseDir)
-	require.NoError(b, err)
 
 	m := memfs.New()
 	for i := 0; i < 1000; i++ {
-		err = root.WriteFile(fmt.Sprint(fileName, i), []byte("test"), 0o600)
+		err := os.WriteFile(fmt.Sprint(fileName, i), []byte("test"), 0o600)
 		require.NoError(b, err)
 
 		err = util.WriteFile(m, fmt.Sprint(fileName, i), []byte("test"), 0o600)
@@ -79,7 +77,7 @@ func BenchmarkWalkdir(b *testing.B) {
 
 	m := memfs.New()
 	for i := 0; i < 1000; i++ {
-		err = root.WriteFile(fmt.Sprint(fileName, i), []byte("test"), 0o600)
+		err = os.WriteFile(fmt.Sprint(fileName, i), []byte("test"), 0o600)
 		require.NoError(b, err)
 
 		err = util.WriteFile(m, fmt.Sprint(fileName, i), []byte("test"), 0o600)