- struct list_head deathrow;
- struct uuid_nid_data *data, *n;
-
- CFS_INIT_LIST_HEAD (&deathrow);
-
- spin_lock (&g_uuid_lock);
- list_for_each_entry_safe(data, n, &g_uuid_list, un_list) {
- if (uuid == NULL) {
- list_del (&data->un_list);
- list_add (&data->un_list, &deathrow);
- } else if (strcmp(data->un_uuid, uuid) == 0) {
- --data->un_count;
- if (data->un_count <= 0) {
- list_del (&data->un_list);
- list_add (&data->un_list, &deathrow);
- }
- break;
- }
- }
- spin_unlock (&g_uuid_lock);
+ 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;
+}