Revert "core: one step back again, for nspawn we actually can't wait for cgroups running empty since systemd will get exactly zero notifications about it"v239-13.5v239-13.4

This reverts commit 743970d2ea6d08aa7c7bff8220f6b7702f2b1db7.

RHEL-only
https://bugzilla.redhat.com/show_bug.cgi?id=1141137
https://github.com/systemd/systemd/pull/350

Resolves: #1705379

1 files changed, 1 insertions, 10 deletions

diff --git a/src/core/unit.c b/src/core/unit.c
index cc43ddc4f1..d298afb0d4 100644
--- a/src/core/unit.c
+++ b/src/core/unit.c
@@ -4579,16 +4579,7 @@ int unit_kill_context(
 
                 } else if (r > 0) {
 
-                        /* FIXME: For now, on the legacy hierarchy, we will not wait for the cgroup members to die if
-                         * we are running in a container or if this is a delegation unit, simply because cgroup
-                         * notification is unreliable in these cases. It doesn't work at all in containers, and outside
-                         * of containers it can be confused easily by left-over directories in the cgroup — which
-                         * however should not exist in non-delegated units. On the unified hierarchy that's different,
-                         * there we get proper events. Hence rely on them. */
-
-                        if (cg_unified_controller(SYSTEMD_CGROUP_CONTROLLER) > 0 ||
-                            (detect_container() == 0 && !unit_cgroup_delegate(u)))
-                                wait_for_exit = true;
+                        wait_for_exit = true;
 
                         if (send_sighup) {
                                 set_free(pid_set);