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, 6 insertions, 0 deletions

diff --git a/src/fdset.c b/src/fdset.c
index 9bf3788849..e67fe6fabf 100644
--- a/src/fdset.c
+++ b/src/fdset.c
@@ -49,6 +49,12 @@ void fdset_free(FDSet *s) {
                  * here, so that the EBADFD that valgrind will return
                  * us on close() doesn't influence us */
 
+                /* When reloading duplicates of the private bus
+                 * connection fds and suchlike are closed here, which
+                 * has no effect at all, since they are only
+                 * duplicates. So don't be surprised about these log
+                 * messages. */
+
                 log_debug("Closing left-over fd %i", PTR_TO_FD(p));
                 close_nointr(PTR_TO_FD(p));
         }