ocfs2/dlm: Link all lockres' to a tracking list

This patch links all the lockres' to a tracking list in dlm_ctxt.
We will use this in an upcoming patch that will walk the entire
list and to dump the lockres states to a debugfs file.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mfasheh@suse.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/fs/ocfs2/dlm/dlmdomain.c b/fs/ocfs2/dlm/dlmdomain.c
index b092364d0d52..4f7695c851ed 100644
--- a/fs/ocfs2/dlm/dlmdomain.c
+++ b/fs/ocfs2/dlm/dlmdomain.c
@@ -644,6 +644,7 @@ int dlm_shutting_down(struct dlm_ctxt *dlm)
 void dlm_unregister_domain(struct dlm_ctxt *dlm)
 {
         int leave = 0;
+        struct dlm_lock_resource *res;
 
         spin_lock(&dlm_domain_lock);
         BUG_ON(dlm->dlm_state != DLM_CTXT_JOINED);
@@ -673,6 +674,15 @@ void dlm_unregister_domain(struct dlm_ctxt *dlm)
                         msleep(500);
                         mlog(0, "%s: more migration to do\n", dlm->name);
                 }
+
+                /* This list should be empty. If not, print remaining lockres */
+                if (!list_empty(&dlm->tracking_list)) {
+                        mlog(ML_ERROR, "Following lockres' are still on the "
+                             "tracking list:\n");
+                        list_for_each_entry(res, &dlm->tracking_list, tracking)
+                                dlm_print_one_lock_resource(res);
+                }
+
                 dlm_mark_domain_leaving(dlm);
                 dlm_leave_domain(dlm);
                 dlm_complete_dlm_shutdown(dlm);
@@ -1526,6 +1536,7 @@ static struct dlm_ctxt *dlm_alloc_ctxt(const char *domain,
         INIT_LIST_HEAD(&dlm->reco.node_data);
         INIT_LIST_HEAD(&dlm->purge_list);
         INIT_LIST_HEAD(&dlm->dlm_domain_handlers);
+        INIT_LIST_HEAD(&dlm->tracking_list);
         dlm->reco.state = 0;
 
         INIT_LIST_HEAD(&dlm->pending_asts);