说明：  给出了比以前更详细和更易理解的Linux内核代码注释。作者分析了核心代码，并对重要的函数、系统调用和数据结构提供了大量的注释。
(Given more detailed and easier to understand the Linux kernel code Notes. The author analyzes the core code, and an important function, system calls and data structures to provide a large amount of the Notes.)