1*4882a593Smuzhiyun# SPDX-License-Identifier: GPL-2.0-only 2*4882a593Smuzhiyunconfig FUSE_FS 3*4882a593Smuzhiyun tristate "FUSE (Filesystem in Userspace) support" 4*4882a593Smuzhiyun select FS_POSIX_ACL 5*4882a593Smuzhiyun help 6*4882a593Smuzhiyun With FUSE it is possible to implement a fully functional filesystem 7*4882a593Smuzhiyun in a userspace program. 8*4882a593Smuzhiyun 9*4882a593Smuzhiyun There's also a companion library: libfuse2. This library is available 10*4882a593Smuzhiyun from the FUSE homepage: 11*4882a593Smuzhiyun <https://github.com/libfuse/> 12*4882a593Smuzhiyun although chances are your distribution already has that library 13*4882a593Smuzhiyun installed if you've installed the "fuse" package itself. 14*4882a593Smuzhiyun 15*4882a593Smuzhiyun See <file:Documentation/filesystems/fuse.rst> for more information. 16*4882a593Smuzhiyun See <file:Documentation/Changes> for needed library/utility version. 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun If you want to develop a userspace FS, or if you want to use 19*4882a593Smuzhiyun a filesystem based on FUSE, answer Y or M. 20*4882a593Smuzhiyun 21*4882a593Smuzhiyunconfig CUSE 22*4882a593Smuzhiyun tristate "Character device in Userspace support" 23*4882a593Smuzhiyun depends on FUSE_FS 24*4882a593Smuzhiyun help 25*4882a593Smuzhiyun This FUSE extension allows character devices to be 26*4882a593Smuzhiyun implemented in userspace. 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun If you want to develop or use a userspace character device 29*4882a593Smuzhiyun based on CUSE, answer Y or M. 30*4882a593Smuzhiyun 31*4882a593Smuzhiyunconfig VIRTIO_FS 32*4882a593Smuzhiyun tristate "Virtio Filesystem" 33*4882a593Smuzhiyun depends on FUSE_FS 34*4882a593Smuzhiyun select VIRTIO 35*4882a593Smuzhiyun help 36*4882a593Smuzhiyun The Virtio Filesystem allows guests to mount file systems from the 37*4882a593Smuzhiyun host. 38*4882a593Smuzhiyun 39*4882a593Smuzhiyun If you want to share files between guests or with the host, answer Y 40*4882a593Smuzhiyun or M. 41*4882a593Smuzhiyun 42*4882a593Smuzhiyunconfig FUSE_DAX 43*4882a593Smuzhiyun bool "Virtio Filesystem Direct Host Memory Access support" 44*4882a593Smuzhiyun default y 45*4882a593Smuzhiyun select INTERVAL_TREE 46*4882a593Smuzhiyun depends on VIRTIO_FS 47*4882a593Smuzhiyun depends on FS_DAX 48*4882a593Smuzhiyun depends on DAX_DRIVER 49*4882a593Smuzhiyun help 50*4882a593Smuzhiyun This allows bypassing guest page cache and allows mapping host page 51*4882a593Smuzhiyun cache directly in guest address space. 52*4882a593Smuzhiyun 53*4882a593Smuzhiyun If you want to allow mounting a Virtio Filesystem with the "dax" 54*4882a593Smuzhiyun option, answer Y. 55