manager: merge serialization and desrialization counter into one, and increase it when reexecuting

Instead of having individual counters n_serializing and n_deserializing
have a single one n_reloading, which should be sufficient.

Set n_reloading when we are about to go down for reexecution to avoid
cgroup trimming when we free the units for reexecution.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/main.c b/src/main.c
index 76a0943832..5a8ef529d2 100644
--- a/src/main.c
+++ b/src/main.c
@@ -898,6 +898,9 @@ static int prepare_reexecute(Manager *m, FILE **_f, FDSet **_fds) {
         assert(_f);
         assert(_fds);
 
+        /* Make sure nothing is really destructed when we shut down */
+        m->n_reloading ++;
+
         if ((r = manager_open_serialization(m, &f)) < 0) {
                 log_error("Failed to create serialization file: %s", strerror(-r));
                 goto fail;