[DLM] wait for config check during join [6/6]

Joining the lockspace should wait for the initial round of inter-node
config checks to complete before returning.  This way, if there's a
configuration mismatch between the joining node and the existing nodes,
the join can fail and return an error to the application.

Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/fs/dlm/member.c b/fs/dlm/member.c
index f08faec3d854..073599dced2a 100644
--- a/fs/dlm/member.c
+++ b/fs/dlm/member.c
@@ -233,6 +233,12 @@ int dlm_recover_members(struct dlm_ls *ls, struct dlm_recover *rv, int *neg_out)
 	*neg_out = neg;
 
 	error = ping_members(ls);
+	if (!error || error == -EPROTO) {
+		/* new_lockspace() may be waiting to know if the config
+		   is good or bad */
+		ls->ls_members_result = error;
+		complete(&ls->ls_members_done);
+	}
 	if (error)
 		goto out;