scan_ds_queue_contains
static boolean_t scan_ds_queue_contains(dsl_scan_t *scn, uint64_t dsobj,
if (scan_ds_queue_contains(scn, ds->ds_object, &mintxg)) {
if (scan_ds_queue_contains(scn, ds->ds_object, &mintxg)) {
if (scan_ds_queue_contains(scn, ds1->ds_object, &mintxg)) {
if (scan_ds_queue_contains(scn, ds2->ds_object, &mintxg)) {