If the kernel code in question only uses approved channels for accessing userspace (copy_to_user, etc) SMAP can be safely ignored — these functions automatically toggle SMAP before and after accessing memory. But what about Write Protect?
Larger of two values
。新收录的资料对此有专业解读
Mutually-recursive trees and forests #
Explicit return. I find I prefer code where return points are made explicit. Lisp will implicitly return the result of the last evaluation
弃船时，船长应当采取一切措施，首先组织旅客安全离船，然后安排船员离船，船长应当最后离船。在离船前，船长应当指挥船员尽力抢救航海日志、轮机日志、油类记录簿、无线电记录簿、本航次使用过的海图和文件，以及贵重物品、邮件和现金，指挥船员关闭油舱阀门等设备以防止或者减少污染发生。