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Artem Bityutskiy0d7eff82008-07-14 19:08:38 +03001config UBIFS_FS
2 tristate "UBIFS file system support"
3 select CRC16
4 select CRC32
5 select CRYPTO if UBIFS_FS_ADVANCED_COMPR
6 select CRYPTO if UBIFS_FS_LZO
7 select CRYPTO if UBIFS_FS_ZLIB
8 select CRYPTO_LZO if UBIFS_FS_LZO
9 select CRYPTO_DEFLATE if UBIFS_FS_ZLIB
10 depends on MTD_UBI
11 help
12 UBIFS is a file system for flash devices which works on top of UBI.
13
14config UBIFS_FS_XATTR
15 bool "Extended attributes support"
16 depends on UBIFS_FS
17 help
18 This option enables support of extended attributes.
19
20config UBIFS_FS_ADVANCED_COMPR
21 bool "Advanced compression options"
22 depends on UBIFS_FS
23 help
24 This option allows to explicitly choose which compressions, if any,
Matt LaPlante692105b2009-01-26 11:12:25 +010025 are enabled in UBIFS. Removing compressors means inability to read
Artem Bityutskiy0d7eff82008-07-14 19:08:38 +030026 existing file systems.
27
28 If unsure, say 'N'.
29
30config UBIFS_FS_LZO
31 bool "LZO compression support" if UBIFS_FS_ADVANCED_COMPR
32 depends on UBIFS_FS
33 default y
34 help
Matt LaPlante692105b2009-01-26 11:12:25 +010035 LZO compressor is generally faster than zlib but compresses worse.
Artem Bityutskiy0d7eff82008-07-14 19:08:38 +030036 Say 'Y' if unsure.
37
38config UBIFS_FS_ZLIB
39 bool "ZLIB compression support" if UBIFS_FS_ADVANCED_COMPR
40 depends on UBIFS_FS
41 default y
42 help
Frederik Schwarzer025dfda2008-10-16 19:02:37 +020043 Zlib compresses better than LZO but it is slower. Say 'Y' if unsure.
Artem Bityutskiy0d7eff82008-07-14 19:08:38 +030044
45# Debugging-related stuff
46config UBIFS_FS_DEBUG
Artem Bityutskiycce3f612011-03-09 13:36:23 +020047 bool "Enable debugging support"
Artem Bityutskiy0d7eff82008-07-14 19:08:38 +030048 depends on UBIFS_FS
49 select DEBUG_FS
50 select KALLSYMS_ALL
51 help
Artem Bityutskiycce3f612011-03-09 13:36:23 +020052 This option enables UBIFS debugging support. It makes sure various
53 assertions, self-checks, debugging messages and test modes are compiled
54 in (this all is compiled out otherwise). Assertions are light-weight
55 and this option also enables them. Self-checks, debugging messages and
56 test modes are switched off by default. Thus, it is safe and actually
57 recommended to have debugging support enabled, and it should not slow
58 down UBIFS. You can then further enable / disable individual debugging
59 features using UBIFS module parameters and the corresponding sysfs
60 interfaces.
Artem Bityutskiy0d7eff82008-07-14 19:08:38 +030061
62config UBIFS_FS_DEBUG_CHKS
63 bool "Enable extra checks"
64 depends on UBIFS_FS_DEBUG
65 help
66 If extra checks are enabled UBIFS will check the consistency of its
67 internal data structures during operation. However, UBIFS performance
68 is dramatically slower when this option is selected especially if the
69 file system is large.