rv = fifo_segment_create (sm, a);
SFIFO_TEST (!rv, "svm_fifo_segment_create returned %d", rv);
fs = fifo_segment_get_segment (sm, a->new_segment_indices[0]);
rv = fifo_segment_create (sm, a);
SFIFO_TEST (!rv, "svm_fifo_segment_create returned %d", rv);
fs = fifo_segment_get_segment (sm, a->new_segment_indices[0]);