This is a simple ram based file system, tfs (test file system). It has been tested on the 4.17.0 kernel.
References:
- http://www.geocities.ws/ravikiran_uvs/articles/rkfs.html
- https://kukuruku.co/post/writing-a-file-system-in-linux-kernel/
- Primarily adapted from Linux native /fs/ramfs code.