From 7b0a12675106f7667254b67f3f759249cd47ea2c Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 3 May 2023 14:12:43 +0200
Subject: [PATCH] manager: add debug logging about BARRIER=1 messages

---
 src/core/manager.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/core/manager.c b/src/core/manager.c
index 2a7e80ca677..36881de4790 100644
--- a/src/core/manager.c
+++ b/src/core/manager.c
@@ -2672,8 +2672,10 @@ static int manager_dispatch_notify_fd(sd_event_source *source, int fd, uint32_t
         }
 
         /* Possibly a barrier fd, let's see. */
-        if (manager_process_barrier_fd(tags, fds))
+        if (manager_process_barrier_fd(tags, fds)) {
+                log_debug("Received barrier notification message from PID " PID_FMT ".", ucred->pid);
                 return 0;
+        }
 
         /* Increase the generation counter used for filtering out duplicate unit invocations. */
         m->notifygen++;
-- 
2.47.3