我正在为系统架构考试做一些修改，并从过去的论文（下面）中看到了这个问题。我不知道从哪里开始，因为它没有指定文件系统的类型。在浪费空间时，我唯一能想到的是长度可以变化。
对于解决以下问题的最佳方法的任何帮助，将不胜感激。
Briefly discuss the areas where space is wasted in a typical disk filing
system, and indicate how a system designer may keep this to a
minimum. Note that, in this context, space wastage excludes user
actions, and is concerned principally with overheads within the system
itself.