Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / fs / btrfs / Kconfig
1 config BTRFS_FS
2 tristate "Btrfs filesystem Unstable disk format"
3 select LIBCRC32C
4 select ZLIB_INFLATE
5 select ZLIB_DEFLATE
6 select LZO_COMPRESS
7 select LZO_DECOMPRESS
8 help
9 Btrfs is a new filesystem with extents, writable snapshotting,
10 support for multiple devices and many more features.
11
12 Btrfs is highly experimental, and THE DISK FORMAT IS NOT YET
13 FINALIZED. You should say N here unless you are interested in
14 testing Btrfs with non-critical data.
15
16 To compile this file system support as a module, choose M here. The
17 module will be called btrfs.
18
19 If unsure, say N.
20
21 config BTRFS_FS_POSIX_ACL
22 bool "Btrfs POSIX Access Control Lists"
23 depends on BTRFS_FS
24 select FS_POSIX_ACL
25 help
26 POSIX Access Control Lists (ACLs) support permissions for users and
27 groups beyond the owner/group/world scheme.
28
29 To learn more about Access Control Lists, visit the POSIX ACLs for
30 Linux website <http://acl.bestbits.at/>.
31
32 If you don't know what Access Control Lists are, say N
33
34 config BTRFS_FS_CHECK_INTEGRITY
35 bool "Btrfs with integrity check tool compiled in (DANGEROUS)"
36 depends on BTRFS_FS
37 help
38 Adds code that examines all block write requests (including
39 writes of the super block). The goal is to verify that the
40 state of the filesystem on disk is always consistent, i.e.,
41 after a power-loss or kernel panic event the filesystem is
42 in a consistent state.
43
44 If the integrity check tool is included and activated in
45 the mount options, plenty of kernel memory is used, and
46 plenty of additional CPU cycles are spent. Enabling this
47 functionality is not intended for normal use.
48
49 In most cases, unless you are a btrfs developer who needs
50 to verify the integrity of (super)-block write requests
51 during the run of a regression test, say N