If you haven't seen it before, you might find this useful https://www.kernel.org/doc/html/latest/filesystems/vfs.html https://www.kernel.org/doc/html/latest/fil

If you haven't seen it before, you might find this useful https://www.kernel.org/doc/html/latest/filesystems/vfs.html https://www.kernel.org/doc/html/latest/filesystems/vfs.html It's an overview of the VFS layer, which is how they do all the filesystem-specific stuff while maintaining a consistent interface from the kernel.