multipathd: only call reload_and_sync_map() when ghost delay expires

While we're waiting for active paths to appear when ghost delay is
enabled, we do add new paths to multipathd's internal mpp data structure
as they are discovered (unlike missing uevent case, where we orphan
the paths instead). When the ghost_delay timer expires, it should be
sufficient to call the more light-weight reload_and_sync_map() instead
of update_map().

Signed-off-by: Martin Wilck <mwilck@suse.com>

multipathd/main.c

@@ -2932,16 +2932,16 @@ static void checker_finished(struct vectors *vecs)
 	int i;
 
 	vector_foreach_slot(vecs->mpvec, mpp, i) {
-		if ((missing_uev_wait_tick(mpp, &uev_timed_out) ||
-		     ghost_delay_tick(mpp)) &&
+		if (missing_uev_wait_tick(mpp, &uev_timed_out) &&
 		    update_map(mpp, vecs, 0)) {
 			/* multipath device deleted */
 			i--;
 			continue;
 		}
 		if ((update_mpp_prio(mpp) ||
 		     (mpp->need_reload && mpp->synced_count > 0) ||
-		     deferred_failback_tick(mpp)) &&
+		     deferred_failback_tick(mpp) ||
+		     ghost_delay_tick(mpp)) &&
 		    reload_and_sync_map(mpp, vecs) == 2)
 			/* multipath device deleted */
 			i--;