1# SPDX-License-Identifier: GPL-2.0-only 2config FUSE_FS 3 tristate "FUSE (Filesystem in Userspace) support" 4 select FS_POSIX_ACL 5 select FS_IOMAP 6 help 7 With FUSE it is possible to implement a fully functional filesystem 8 in a userspace program. 9 10 There's also a companion library: libfuse2. This library is available 11 from the FUSE homepage: 12 <https://github.com/libfuse/> 13 although chances are your distribution already has that library 14 installed if you've installed the "fuse" package itself. 15 16 See <file:Documentation/filesystems/fuse.rst> for more information. 17 See <file:Documentation/Changes> for needed library/utility version. 18 19 If you want to develop a userspace FS, or if you want to use 20 a filesystem based on FUSE, answer Y or M. 21 22config CUSE 23 tristate "Character device in Userspace support" 24 depends on FUSE_FS 25 help 26 This FUSE extension allows character devices to be 27 implemented in userspace. 28 29 If you want to develop or use a userspace character device 30 based on CUSE, answer Y or M. 31 32config VIRTIO_FS 33 tristate "Virtio Filesystem" 34 depends on FUSE_FS 35 select VIRTIO 36 help 37 The Virtio Filesystem allows guests to mount file systems from the 38 host. 39 40 If you want to share files between guests or with the host, answer Y 41 or M. 42 43config FUSE_DAX 44 bool "Virtio Filesystem Direct Host Memory Access support" 45 default y 46 select INTERVAL_TREE 47 depends on VIRTIO_FS 48 depends on FS_DAX 49 depends on DAX 50 help 51 This allows bypassing guest page cache and allows mapping host page 52 cache directly in guest address space. 53 54 If you want to allow mounting a Virtio Filesystem with the "dax" 55 option, answer Y. 56 57config FUSE_PASSTHROUGH 58 bool "FUSE passthrough operations support" 59 default y 60 depends on FUSE_FS 61 select FS_STACK 62 help 63 This allows bypassing FUSE server by mapping specific FUSE operations 64 to be performed directly on a backing file. 65 66 If you want to allow passthrough operations, answer Y. 67 68config FUSE_IO_URING 69 bool "FUSE communication over io-uring" 70 default y 71 depends on FUSE_FS 72 depends on IO_URING 73 help 74 This allows sending FUSE requests over the io-uring interface and 75 also adds request core affinity. 76 77 If you want to allow fuse server/client communication through io-uring, 78 answer Y 79