1# SPDX-License-Identifier: GPL-2.0-only 2config FUSE_FS 3 tristate "FUSE (Filesystem in Userspace) support" 4 select FS_POSIX_ACL 5 help 6 With FUSE it is possible to implement a fully functional filesystem 7 in a userspace program. 8 9 There's also a companion library: libfuse2. This library is available 10 from the FUSE homepage: 11 <https://github.com/libfuse/> 12 although chances are your distribution already has that library 13 installed if you've installed the "fuse" package itself. 14 15 See <file:Documentation/filesystems/fuse.rst> for more information. 16 See <file:Documentation/Changes> for needed library/utility version. 17 18 If you want to develop a userspace FS, or if you want to use 19 a filesystem based on FUSE, answer Y or M. 20 21config CUSE 22 tristate "Character device in Userspace support" 23 depends on FUSE_FS 24 help 25 This FUSE extension allows character devices to be 26 implemented in userspace. 27 28 If you want to develop or use a userspace character device 29 based on CUSE, answer Y or M. 30 31config VIRTIO_FS 32 tristate "Virtio Filesystem" 33 depends on FUSE_FS 34 select VIRTIO 35 help 36 The Virtio Filesystem allows guests to mount file systems from the 37 host. 38 39 If you want to share files between guests or with the host, answer Y 40 or M. 41 42config FUSE_DAX 43 bool "Virtio Filesystem Direct Host Memory Access support" 44 default y 45 select INTERVAL_TREE 46 depends on VIRTIO_FS 47 depends on FS_DAX 48 depends on DAX 49 help 50 This allows bypassing guest page cache and allows mapping host page 51 cache directly in guest address space. 52 53 If you want to allow mounting a Virtio Filesystem with the "dax" 54 option, answer Y. 55