REQ_STATUS_ERROR
if (READ_ONCE(req->status) == REQ_STATUS_ERROR) {
if (READ_ONCE(req->status) == REQ_STATUS_ERROR) {
WRITE_ONCE(req->status, REQ_STATUS_ERROR);
WRITE_ONCE(req->status, REQ_STATUS_ERROR);
p9_client_cb(m->client, req, REQ_STATUS_ERROR);
WRITE_ONCE(req->status, REQ_STATUS_ERROR);
status = REQ_STATUS_ERROR;
p9_client_cb(usb9pfs->client, req, REQ_STATUS_ERROR);
WRITE_ONCE(req->status, REQ_STATUS_ERROR);
status = (req->status != REQ_STATUS_ERROR) ?
REQ_STATUS_RCVD : REQ_STATUS_ERROR;