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