From 030428eedd7682e9bfa5c4dd9b2b3c15c4acbb63 Mon Sep 17 00:00:00 2001
From: Lennart Poettering <lennart@poettering.net>
Date: Apr 07 2021 22:35:33 +0000
Subject: unit: enqueue cgroup empty check event if the last ref on a unit is dropped


(cherry picked from commit e5c36295d81971ef75d9c6f98f0890b92a4a353f)

Resolves: #1697893

patch_name: 0116-unit-enqueue-cgroup-empty-check-event-if-the-last-re.patch
present_in_specfile: true
location_in_specfile: 116
squash_commits: true

---

diff --git a/src/core/dbus-unit.c b/src/core/dbus-unit.c
index ae04104..c5bca10 100644
--- a/src/core/dbus-unit.c
+++ b/src/core/dbus-unit.c
@@ -1746,7 +1746,13 @@ static int bus_unit_track_handler(sd_bus_track *t, void *userdata) {
 
         u->bus_track = sd_bus_track_unref(u->bus_track); /* make sure we aren't called again */
 
+        /* If the client that tracks us disappeared, then there's reason to believe that the cgroup is empty now too,
+         * let's see */
+        unit_add_to_cgroup_empty_queue(u);
+
+        /* Also add the unit to the GC queue, after all if the client left it might be time to GC this unit */
         unit_add_to_gc_queue(u);
+
         return 0;
 }