{
INIT_LIST_HEAD(&ops->list);
list_add_tail(&ops->list, &engine_list);
{
INIT_LIST_HEAD(&ops->list);
list_add_tail(&ops->list, &engine_list);
if (io_u->ddir != DDIR_SYNC)
td->io_issues[io_u->ddir]++;
ret = td->io_ops->queue(td, io_u);
if (io_u->ddir != DDIR_SYNC)
td->io_issues[io_u->ddir]++;
ret = td->io_ops->queue(td, io_u);