- /* If we set up but never connected, the
- client import will not have been cleaned. */
- if (obd->u.cli.cl_import) {
- struct obd_import *imp;
- cfs_down_write(&obd->u.cli.cl_sem);
- imp = obd->u.cli.cl_import;
- CDEBUG(D_CONFIG, "%s: client import never connected\n",
- obd->obd_name);
- ptlrpc_invalidate_import(imp);
- if (imp->imp_rq_pool) {
- ptlrpc_free_rq_pool(imp->imp_rq_pool);
- imp->imp_rq_pool = NULL;
- }
- class_destroy_import(imp);
- cfs_up_write(&obd->u.cli.cl_sem);
- obd->u.cli.cl_import = NULL;
- }
+ /* LU-464
+ * for echo client, export may be on zombie list, wait for
+ * zombie thread to cull it, because cli.cl_import will be
+ * cleared in client_disconnect_export():
+ * class_export_destroy() -> obd_cleanup() ->
+ * echo_device_free() -> echo_client_cleanup() ->
+ * obd_disconnect() -> osc_disconnect() ->
+ * client_disconnect_export()
+ */
+ obd_zombie_barrier();
+ obd_cleanup_client_import(obd);