A little more about paging
Take a look at the Sections 4.4 to 4.8 of the ancient article for a very high, and dated, view of file systems. Chapter 12 of Understanding the Linux Kernel is also a good introduction. However, the classic paper “A Fast File System for UNIX” offered a good, though oddly non-visual, description of the Berkeley once-“fast” file system.
And finally, here are some more old slides.