tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1config BTRFS_FS
2 tristate "Btrfs filesystem support"
3 select CRYPTO
4 select CRYPTO_CRC32C
5 select ZLIB_INFLATE
6 select ZLIB_DEFLATE
7 select LZO_COMPRESS
8 select LZO_DECOMPRESS
9 select ZSTD_COMPRESS
10 select ZSTD_DECOMPRESS
11 select RAID6_PQ
12 select XOR_BLOCKS
13 select SRCU
14
15 help
16 Btrfs is a general purpose copy-on-write filesystem with extents,
17 writable snapshotting, support for multiple devices and many more
18 features focused on fault tolerance, repair and easy administration.
19
20 The filesystem disk format is no longer unstable, and it's not
21 expected to change unless there are strong reasons to do so. If there
22 is a format change, file systems with a unchanged format will
23 continue to be mountable and usable by newer kernels.
24
25 For more information, please see the web pages at
26 http://btrfs.wiki.kernel.org.
27
28 To compile this file system support as a module, choose M here. The
29 module will be called btrfs.
30
31 If unsure, say N.
32
33config BTRFS_FS_POSIX_ACL
34 bool "Btrfs POSIX Access Control Lists"
35 depends on BTRFS_FS
36 select FS_POSIX_ACL
37 help
38 POSIX Access Control Lists (ACLs) support permissions for users and
39 groups beyond the owner/group/world scheme.
40
41 If you don't know what Access Control Lists are, say N
42
43config BTRFS_FS_CHECK_INTEGRITY
44 bool "Btrfs with integrity check tool compiled in (DANGEROUS)"
45 depends on BTRFS_FS
46 help
47 Adds code that examines all block write requests (including
48 writes of the super block). The goal is to verify that the
49 state of the filesystem on disk is always consistent, i.e.,
50 after a power-loss or kernel panic event the filesystem is
51 in a consistent state.
52
53 If the integrity check tool is included and activated in
54 the mount options, plenty of kernel memory is used, and
55 plenty of additional CPU cycles are spent. Enabling this
56 functionality is not intended for normal use.
57
58 In most cases, unless you are a btrfs developer who needs
59 to verify the integrity of (super)-block write requests
60 during the run of a regression test, say N
61
62config BTRFS_FS_RUN_SANITY_TESTS
63 bool "Btrfs will run sanity tests upon loading"
64 depends on BTRFS_FS
65 help
66 This will run some basic sanity tests on the free space cache
67 code to make sure it is acting as it should. These are mostly
68 regression tests and are only really interesting to btrfs
69 developers.
70
71 If unsure, say N.
72
73config BTRFS_DEBUG
74 bool "Btrfs debugging support"
75 depends on BTRFS_FS
76 help
77 Enable run-time debugging support for the btrfs filesystem. This may
78 enable additional and expensive checks with negative impact on
79 performance, or export extra information via sysfs.
80
81 If unsure, say N.
82
83config BTRFS_ASSERT
84 bool "Btrfs assert support"
85 depends on BTRFS_FS
86 help
87 Enable run-time assertion checking. This will result in panics if
88 any of the assertions trip. This is meant for btrfs developers only.
89
90 If unsure, say N.
91
92config BTRFS_FS_REF_VERIFY
93 bool "Btrfs with the ref verify tool compiled in"
94 depends on BTRFS_FS
95 default n
96 help
97 Enable run-time extent reference verification instrumentation. This
98 is meant to be used by btrfs developers for tracking down extent
99 reference problems or verifying they didn't break something.
100
101 If unsure, say N.