[Cluster-devel] [PATCH v5.19-rc1 7/7] fs: dlm: add WARN_ON for non waiter case

[Alexander Aring <aahringo@redhat.com>]

This patch adds a WARN_ON if recovery hits a critical error but no
caller was waiting in dlm_new_lockspace(), this can occur e.g. if a
node got fences. The WARN_ON signals us to investigate into this case
that it should not occur.

Signed-off-by: Alexander Aring <aahringo@redhat.com>
---
 fs/dlm/recoverd.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/dlm/recoverd.c b/fs/dlm/recoverd.c
index eeb221c175a2..240267568aab 100644
--- a/fs/dlm/recoverd.c
+++ b/fs/dlm/recoverd.c
@@ -311,6 +311,7 @@ static void do_ls_recovery(struct dlm_ls *ls)
 
 				/* let new_lockspace() get aware of critical error */
 				ls->ls_recovery_result = error;
+				WARN_ON(completion_done(&ls->ls_recovery_done));
 				complete(&ls->ls_recovery_done);
 				break;
 			}
-- 
2.31.1