SFIFO_TEST (rv == 50, "prealloc chunks expected %u is %u", 50, rv);
rv = fifo_segment_free_bytes (fs);
free_space -= (sizeof (svm_fifo_chunk_t) + 4096) * 50;
SFIFO_TEST (rv == 50, "prealloc chunks expected %u is %u", 50, rv);
rv = fifo_segment_free_bytes (fs);
free_space -= (sizeof (svm_fifo_chunk_t) + 4096) * 50;