From 2c002f5844be2424e07e43b491526430a0b21931 Mon Sep 17 00:00:00 2001
From: sendaoYan <yansendao.ysd@alibaba-inc.com>
Date: Sun, 16 Jun 2024 22:54:28 +0800
Subject: [PATCH] add function comment for supportBirthTimeOnLinux

---
 .../file/attribute/BasicFileAttributeView/CreationTime.java   | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/test/jdk/java/nio/file/attribute/BasicFileAttributeView/CreationTime.java b/test/jdk/java/nio/file/attribute/BasicFileAttributeView/CreationTime.java
index 7d36843f0e9e9..7281f0d9c212b 100644
--- a/test/jdk/java/nio/file/attribute/BasicFileAttributeView/CreationTime.java
+++ b/test/jdk/java/nio/file/attribute/BasicFileAttributeView/CreationTime.java
@@ -72,6 +72,10 @@ private static void setCreationTime(Path file, FileTime time) throws IOException
         view.setTimes(null, null, time);
     }
 
+    /**
+     * read the output of linux command `stat -c "%w" file`, if the output is "-",
+     * then the file system doesn't support birth time 
+     */
     public static boolean supportBirthTimeOnLinux(Path file) {
         try {
             String filePath = file.toAbsolutePath().toString();