From 2d9eaa1c569658333ef616b8bb140a7f2d749264 Mon Sep 17 00:00:00 2001
From: Ming-Hung Tsai <mtsai@redhat.com>
Date: Fri, 7 Aug 2020 01:06:46 +0800
Subject: [PATCH] [metadata_checker] Do not update the superblock if the
 needs_check flag is not set

---
 thin-provisioning/metadata_checker.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/thin-provisioning/metadata_checker.cc b/thin-provisioning/metadata_checker.cc
index b3e05c1..fd47cac 100644
--- a/thin-provisioning/metadata_checker.cc
+++ b/thin-provisioning/metadata_checker.cc
@@ -449,6 +449,10 @@ namespace {
 
 			block_manager::ptr bm = open_bm(path_, block_manager::READ_WRITE);
 			superblock_detail::superblock sb = read_superblock(bm);
+
+			if (!sb.get_needs_check_flag())
+				return true;
+
 			sb.set_needs_check_flag(false);
 			write_superblock(bm, sb);