半路出家○猿

感谢，已优化。

This suggests a design which is very simple: rather than maintain as much as possible in-memory and flush it all out to the filesystem in a panic when we run out of space, we invert that. All data is immediately written to a persistent log on the filesystem without necessarily flushing to disk. In effect this just means that it is transferred into the kernel's pagecache.
感觉这里这样翻译可能更合适。
这带来一种更简单设计：所有数据不需要落盘，直接写入文件系统的持久日志。而不是在内存中存储尽可能多的数据，然后在内存用尽崩溃时才全部写入文件系统