ocfs2: wait for recovery when starting lock mastery

Signed-off-by: Kurt Hackel <kurt.hackel@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>

1 files changed, 30 insertions, 0 deletions

diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c
index c699a450b0f2..b03fecab299d 100644
--- a/fs/ocfs2/dlm/dlmrecovery.c
+++ b/fs/ocfs2/dlm/dlmrecovery.c
@@ -343,6 +343,18 @@ int dlm_is_node_dead(struct dlm_ctxt *dlm, u8 node)
 	return dead;
 }
 
+/* returns true if node is no longer in the domain
+ * could be dead or just not joined */
+int dlm_is_node_recovered(struct dlm_ctxt *dlm, u8 node)
+{
+	int recovered;
+	spin_lock(&dlm->spinlock);
+	recovered = !test_bit(node, dlm->recovery_map);
+	spin_unlock(&dlm->spinlock);
+	return recovered;
+}
+
+
 int dlm_wait_for_node_death(struct dlm_ctxt *dlm, u8 node, int timeout)
 {
 	if (timeout) {
@@ -361,6 +373,24 @@ int dlm_wait_for_node_death(struct dlm_ctxt *dlm, u8 node, int timeout)
 	return 0;
 }
 
+int dlm_wait_for_node_recovery(struct dlm_ctxt *dlm, u8 node, int timeout)
+{
+	if (timeout) {
+		mlog(0, "%s: waiting %dms for notification of "
+		     "recovery of node %u\n", dlm->name, timeout, node);
+		wait_event_timeout(dlm->dlm_reco_thread_wq,
+			   dlm_is_node_recovered(dlm, node),
+			   msecs_to_jiffies(timeout));
+	} else {
+		mlog(0, "%s: waiting indefinitely for notification "
+		     "of recovery of node %u\n", dlm->name, node);
+		wait_event(dlm->dlm_reco_thread_wq,
+			   dlm_is_node_recovered(dlm, node));
+	}
+	/* for now, return 0 */
+	return 0;
+}
+
 /* callers of the top-level api calls (dlmlock/dlmunlock) should
  * block on the dlm->reco.event when recovery is in progress.
  * the dlm recovery thread will set this state when it begins