ocfs2: live heartbeat depends on the local node configuration
Removing the local node configuration out from underneath a running
heartbeat is "bad". Provide an API in the ocfs2 nodemanager to request
a configfs dependancy on the local node, then use it in heartbeat.
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
diff --git a/fs/ocfs2/cluster/nodemanager.c b/fs/ocfs2/cluster/nodemanager.c
index eab46d8..af2070da 100644
--- a/fs/ocfs2/cluster/nodemanager.c
+++ b/fs/ocfs2/cluster/nodemanager.c
@@ -910,6 +910,36 @@
configfs_undepend_item(&o2nm_cluster_group.cs_subsys, item);
}
+int o2nm_depend_this_node(void)
+{
+ int ret = 0;
+ struct o2nm_node *local_node;
+
+ local_node = o2nm_get_node_by_num(o2nm_this_node());
+ if (!local_node) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ ret = o2nm_depend_item(&local_node->nd_item);
+ o2nm_node_put(local_node);
+
+out:
+ return ret;
+}
+
+void o2nm_undepend_this_node(void)
+{
+ struct o2nm_node *local_node;
+
+ local_node = o2nm_get_node_by_num(o2nm_this_node());
+ BUG_ON(!local_node);
+
+ o2nm_undepend_item(&local_node->nd_item);
+ o2nm_node_put(local_node);
+}
+
+
static void __exit exit_o2nm(void)
{
if (ocfs2_table_header)