2 tristate "Btrfs filesystem support"
12 Btrfs is a general purpose copy-on-write filesystem with extents,
13 writable snapshotting, support for multiple devices and many more
14 features focused on fault tolerance, repair and easy administration.
16 The filesystem disk format is no longer unstable, and it's not
17 expected to change unless there are strong reasons to do so. If there
18 is a format change, file systems with a unchanged format will
19 continue to be mountable and usable by newer kernels.
21 For more information, please see the web pages at
22 http://btrfs.wiki.kernel.org.
24 To compile this file system support as a module, choose M here. The
25 module will be called btrfs.
29 config BTRFS_FS_POSIX_ACL
30 bool "Btrfs POSIX Access Control Lists"
34 POSIX Access Control Lists (ACLs) support permissions for users and
35 groups beyond the owner/group/world scheme.
37 To learn more about Access Control Lists, visit the POSIX ACLs for
38 Linux website <http://acl.bestbits.at/>.
40 If you don't know what Access Control Lists are, say N
42 config BTRFS_FS_CHECK_INTEGRITY
43 bool "Btrfs with integrity check tool compiled in (DANGEROUS)"
46 Adds code that examines all block write requests (including
47 writes of the super block). The goal is to verify that the
48 state of the filesystem on disk is always consistent, i.e.,
49 after a power-loss or kernel panic event the filesystem is
50 in a consistent state.
52 If the integrity check tool is included and activated in
53 the mount options, plenty of kernel memory is used, and
54 plenty of additional CPU cycles are spent. Enabling this
55 functionality is not intended for normal use.
57 In most cases, unless you are a btrfs developer who needs
58 to verify the integrity of (super)-block write requests
59 during the run of a regression test, say N
61 config BTRFS_FS_RUN_SANITY_TESTS
62 bool "Btrfs will run sanity tests upon loading"
65 This will run some basic sanity tests on the free space cache
66 code to make sure it is acting as it should. These are mostly
67 regression tests and are only really interesting to btrfs
73 bool "Btrfs debugging support"
76 Enable run-time debugging support for the btrfs filesystem. This may
77 enable additional and expensive checks with negative impact on
78 performance, or export extra information via sysfs.
83 bool "Btrfs assert support"
86 Enable run-time assertion checking. This will result in panics if
87 any of the assertions trip. This is meant for btrfs developers only.