+/* Delete the nids for one uuid if specified, otherwise delete all */
+int class_del_uuid(const char *uuid)
+{
+ struct uuid_nid_data *data;
+ struct list_head deathrow;
+
+ INIT_LIST_HEAD(&deathrow);
+
+ spin_lock(&g_uuid_lock);
+ if (uuid != NULL) {
+ struct obd_uuid tmp;
+
+ obd_str2uuid(&tmp, uuid);
+ list_for_each_entry(data, &g_uuid_list, un_list) {
+ if (obd_uuid_equals(&data->un_uuid, &tmp)) {
+ list_move(&data->un_list, &deathrow);
+ break;
+ }
+ }
+ } else
+ list_splice_init(&g_uuid_list, &deathrow);
+ spin_unlock(&g_uuid_lock);
+
+ if (uuid != NULL && list_empty(&deathrow)) {
+ CDEBUG(D_INFO, "Try to delete a non-existent uuid %s\n", uuid);
+ return -EINVAL;
+ }
+
+ while (!list_empty(&deathrow)) {
+ data = list_entry(deathrow.next, struct uuid_nid_data,
+ un_list);
+ list_del(&data->un_list);
+
+ CDEBUG(D_INFO, "del uuid %s %s/%d\n",
+ obd_uuid2str(&data->un_uuid),
+ libcfs_nid2str(data->un_nids[0]),
+ data->un_nid_count);
+
+ OBD_FREE(data, sizeof(*data));
+ }
+ return 0;