1config 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,
25	  are enabled in UBIFS. Removing compressors means inability to read
26	  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
35	   LZO compressor is generally faster than zlib but compresses worse.
36	   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
43	  Zlib compresses better than LZO but it is slower. Say 'Y' if unsure.
44
45# Debugging-related stuff
46config UBIFS_FS_DEBUG
47	bool "Enable debugging"
48	depends on UBIFS_FS
49	select DEBUG_FS
50	select KALLSYMS_ALL
51	help
52	  This option enables UBIFS debugging.
53
54config UBIFS_FS_DEBUG_MSG_LVL
55	int "Default message level (0 = no extra messages, 3 = lots)"
56	depends on UBIFS_FS_DEBUG
57	default "0"
58	help
59	  This controls the amount of debugging messages produced by UBIFS.
60	  If reporting bugs, please try to have available a full dump of the
61	  messages at level 1 while the misbehaviour was occurring. Level 2
62	  may become necessary if level 1 messages were not enough to find the
63	  bug. Generally Level 3 should be avoided.
64
65config UBIFS_FS_DEBUG_CHKS
66	bool "Enable extra checks"
67	depends on UBIFS_FS_DEBUG
68	help
69	  If extra checks are enabled UBIFS will check the consistency of its
70	  internal data structures during operation. However, UBIFS performance
71	  is dramatically slower when this option is selected especially if the
72	  file system is large.
73