CONTIG_MEM_ARENA_QUANTUM
if (align < CONTIG_MEM_ARENA_QUANTUM)
align = CONTIG_MEM_ARENA_QUANTUM;
CONTIG_MEM_ARENA_QUANTUM, contig_mem_span_xalloc,
CONTIG_MEM_ARENA_QUANTUM, contig_mem_reloc_span_xalloc,