fs/ubifs/Kconfig

   1 config 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
  14 config UBIFS_FS_XATTR
  15         bool "Extended attributes support"
  16         depends on UBIFS_FS
  17         help
  18           This option enables support of extended attributes.
  19
  20 config 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
  30 config 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
  38 config 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
  46 config UBIFS_FS_DEBUG
  47         bool "Enable debugging support"
  48         depends on UBIFS_FS
  49         select DEBUG_FS
  50         select KALLSYMS
  51         help
  52           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.