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Alexey Dobriyan335debe2009-01-22 10:27:30 +03001config BTRFS_FS
David Sterbaaa8259142013-03-19 11:50:59 +00002 tristate "Btrfs filesystem support"
Filipe David Borba Manana14a958e2014-01-12 02:22:46 +00003 select CRYPTO
4 select CRYPTO_CRC32C
Alexey Dobriyan335debe2009-01-22 10:27:30 +03005 select ZLIB_INFLATE
6 select ZLIB_DEFLATE
Li Zefana6fa6fa2010-10-25 15:12:26 +08007 select LZO_COMPRESS
8 select LZO_DECOMPRESS
David Woodhouse53b381b2013-01-29 18:40:14 -05009 select RAID6_PQ
Tomasz Torcz10e78e32013-02-05 09:38:53 -050010 select XOR_BLOCKS
Pranith Kumar83fe27e2014-12-05 11:24:45 -050011 select SRCU
David Woodhouse53b381b2013-01-29 18:40:14 -050012
Alexey Dobriyan335debe2009-01-22 10:27:30 +030013 help
David Sterba42046172013-11-20 14:32:34 +010014 Btrfs is a general purpose copy-on-write filesystem with extents,
15 writable snapshotting, support for multiple devices and many more
16 features focused on fault tolerance, repair and easy administration.
Alexey Dobriyan335debe2009-01-22 10:27:30 +030017
David Sterba42046172013-11-20 14:32:34 +010018 The filesystem disk format is no longer unstable, and it's not
19 expected to change unless there are strong reasons to do so. If there
20 is a format change, file systems with a unchanged format will
21 continue to be mountable and usable by newer kernels.
22
23 For more information, please see the web pages at
24 http://btrfs.wiki.kernel.org.
Alexey Dobriyan335debe2009-01-22 10:27:30 +030025
26 To compile this file system support as a module, choose M here. The
27 module will be called btrfs.
28
29 If unsure, say N.
Christian Hessebef62ef2009-02-04 09:28:28 -050030
31config BTRFS_FS_POSIX_ACL
32 bool "Btrfs POSIX Access Control Lists"
33 depends on BTRFS_FS
34 select FS_POSIX_ACL
35 help
36 POSIX Access Control Lists (ACLs) support permissions for users and
37 groups beyond the owner/group/world scheme.
38
39 To learn more about Access Control Lists, visit the POSIX ACLs for
40 Linux website <http://acl.bestbits.at/>.
41
42 If you don't know what Access Control Lists are, say N
Stefan Behrensc975dd42011-11-01 17:06:04 +010043
44config BTRFS_FS_CHECK_INTEGRITY
45 bool "Btrfs with integrity check tool compiled in (DANGEROUS)"
46 depends on BTRFS_FS
47 help
48 Adds code that examines all block write requests (including
49 writes of the super block). The goal is to verify that the
50 state of the filesystem on disk is always consistent, i.e.,
51 after a power-loss or kernel panic event the filesystem is
52 in a consistent state.
53
54 If the integrity check tool is included and activated in
55 the mount options, plenty of kernel memory is used, and
56 plenty of additional CPU cycles are spent. Enabling this
57 functionality is not intended for normal use.
58
59 In most cases, unless you are a btrfs developer who needs
60 to verify the integrity of (super)-block write requests
61 during the run of a regression test, say N
Josef Bacik74255aa2013-03-15 09:47:08 -040062
63config BTRFS_FS_RUN_SANITY_TESTS
64 bool "Btrfs will run sanity tests upon loading"
65 depends on BTRFS_FS
66 help
67 This will run some basic sanity tests on the free space cache
68 code to make sure it is acting as it should. These are mostly
Michael Wittena26a8742013-08-14 09:59:45 +000069 regression tests and are only really interesting to btrfs
70 developers.
Josef Bacik74255aa2013-03-15 09:47:08 -040071
72 If unsure, say N.
73
Eric Sandeen6d49ba12013-04-22 16:12:31 +000074config BTRFS_DEBUG
75 bool "Btrfs debugging support"
76 depends on BTRFS_FS
77 help
78 Enable run-time debugging support for the btrfs filesystem. This may
79 enable additional and expensive checks with negative impact on
80 performance, or export extra information via sysfs.
81
82 If unsure, say N.
Josef Bacik2e17c7c2013-08-26 16:53:15 -040083
84config BTRFS_ASSERT
85 bool "Btrfs assert support"
86 depends on BTRFS_FS
87 help
88 Enable run-time assertion checking. This will result in panics if
89 any of the assertions trip. This is meant for btrfs developers only.
90
91 If unsure, say N.