vdo_start_operation_with_waiter
return vdo_start_operation_with_waiter(state, operation, NULL, NULL);
int vdo_start_operation_with_waiter(struct admin_state *state,
vdo_start_operation_with_waiter(&slab->state,
vdo_start_operation_with_waiter(&slab->state, VDO_ADMIN_STATE_SCRUBBING,
vdo_start_operation_with_waiter(&slab->state, operation,
vdo_start_operation_with_waiter(&journal->slab->state,