LXR linux/fs/ubifs/Kconfig

   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