LU-14503 o2iblnd: clean up zombie connections on shutdown

This is a test patch created to verify the fix for cleaning up
zombie connections on net shutdown in o2iblnd. Wake up connd
threads and wait for them to do the clean-up before proceeding.

Test-Parameters: trivial
Signed-off-by: Serguei Smirnov <ssmirnov@whamcloud.com>
Change-Id: Iff8424d9be7401987046fe9aef6e7a787f5efe83

diff --git a/lnet/klnds/o2iblnd/o2iblnd.c b/lnet/klnds/o2iblnd/o2iblnd.c
index 85d37b7..bfec2a5 100644 (file)
--- a/lnet/klnds/o2iblnd/o2iblnd.c
+++ b/lnet/klnds/o2iblnd/o2iblnd.c
@@ -3021,6 +3021,13 @@ kiblnd_shutdown(struct lnet_ni *ni)
                list_del(&net->ibn_list);
                write_unlock_irqrestore(g_lock, flags);
 
+               wake_up_all(&kiblnd_data.kib_connd_waitq);
+               wait_var_event_warning(&net->ibn_nconns,
+                                      atomic_read(&net->ibn_nconns) == 0,
+                                      "%s: waiting for %d conns to clean\n",
+                                      libcfs_nid2str(ni->ni_nid),
+                                      atomic_read(&net->ibn_nconns));
+
                /* fall through */
 
         case IBLND_INIT_NOTHING: