config FUSE_FS tristate "FUSE (Filesystem in Userspace) support" help With FUSE it is possible to implement a fully functional filesystem in a userspace program. There's also companion library: libfuse. This library along with utilities is available from the FUSE homepage: See for more information. See for needed library/utility version. If you want to develop a userspace FS, or if you want to use a filesystem based on FUSE, answer Y or M.