print the real reason for link update

(cherry picked from commit 18658f18e3f08121f506ec0ba4127ed03a9c25e7)

0027-print-the-real-reason-for-link-update.patch

@@ -0,0 +1,39 @@
+From 7ed8309747a2947ff1ea0f4149e0501f1eb81271 Mon Sep 17 00:00:00 2001
+From: gaoyi <gaoyi15@huawei.com>
+Date: Tue, 20 Jul 2021 15:09:28 +0800
+Subject: [PATCH] print the real reason for link update
+
+reduce retries to improve performance and print the real
+reaseon when the max retries reached
+---
+ src/udev/udev-node.c | 7 +++++--
+ 1 file changed, 5 insertions(+), 2 deletions(-)
+
+diff --git a/src/udev/udev-node.c b/src/udev/udev-node.c
+index 9e52906..8b7996d 100644
+--- a/src/udev/udev-node.c
++++ b/src/udev/udev-node.c
+@@ -29,7 +29,7 @@
+ #include "user-util.h"
+ 
+ #define CREATE_LINK_MAX_RETRIES 128
+-#define LINK_UPDATE_MAX_RETRIES 128
++#define LINK_UPDATE_MAX_RETRIES 4
+ #define TOUCH_FILE_MAX_RETRIES  128
+ #define UDEV_NODE_HASH_KEY SD_ID128_MAKE(b9,6a,f1,ce,40,31,44,1a,9e,19,ec,8b,ae,f3,e3,2f)
+ 
+@@ -353,7 +353,10 @@ static int link_update(sd_device *dev, const char *slink_in, bool add) {
+                 }
+         }
+ 
+-        return i < LINK_UPDATE_MAX_RETRIES ? 0 : -ELOOP;
++        if (i >= LINK_UPDATE_MAX_RETRIES)
++                log_device_debug(dev, "Exceeded max retries for link update");
++
++        return 0;
+ }
+ 
+ int udev_node_update_old_links(sd_device *dev, sd_device *dev_old) {
+-- 
+2.27.0
+

systemd.spec

@@ -20,7 +20,7 @@
 Name:           systemd
 Url:            https://www.freedesktop.org/wiki/Software/systemd
 Version:        249
-Release:        23
+Release:        24
 License:        MIT and LGPLv2+ and GPLv2+
 Summary:        System and Service Manager
 
@@ -72,6 +72,7 @@ Patch0023:      0023-delay-to-restart-when-a-service-can-not-be-auto-restarted.p
 Patch0024:      0024-disable-initialize_clock.patch
 Patch0025:      0025-systemd-solve-that-rsyslog-reads-journal-s-object-of.patch
 Patch0026:      0026-check-whether-command_prev-is-null-before-assigning-.patch
+Patch0027:      0027-print-the-real-reason-for-link-update.patch
 
 #backport
 Patch6000:      backport-core-fix-free-undefined-pointer-when-strdup-failed-i.patch
@@ -1503,6 +1504,9 @@ fi
 %{_libdir}/security/pam_systemd.so
 
 %changelog
+* Tue Apr 12 2022 xujing <xujing99@huawei.com> - 249-24
+- print the real reason for link update
+
 * Tue Apr 12 2022 xujing <xujing99@huawei.com> - 249-23
 - check whether command_prev is null before assigning value