(type $succ (struct (ref null $succ)))
对于我们后世人来说，可以有站在今天的价值观上去看这个事的判断和分析，但在创作这个人物的时候，是想尽可能客观一些，所以两边（的评价）都给它搁上去。
，更多细节参见新收录的资料
Etiquette is always based on the idea of care and consideration for others, Wesson said. So it helps to think about how the recipients might be affected by your message.，这一点在新收录的资料中也有详细论述
Calls kmap() to map that frame into the kernel’s virtual address space as writable.