LXR linux/fs/btrfs/Kconfig

   1config BTRFS_FS
   2        tristate "Btrfs filesystem support"
   3        select LIBCRC32C
   4        select ZLIB_INFLATE
   5        select ZLIB_DEFLATE
   6        select LZO_COMPRESS
   7        select LZO_DECOMPRESS
   8        select RAID6_PQ
   9        select XOR_BLOCKS
  10
  11        help
  12          Btrfs is a new filesystem with extents, writable snapshotting,
  13          support for multiple devices and many more features.
  14
  15          Btrfs is highly experimental, and THE DISK FORMAT IS NOT YET
  16          FINALIZED.  You should say N here unless you are interested in
  17          testing Btrfs with non-critical data.
  18
  19          To compile this file system support as a module, choose M here. The
  20          module will be called btrfs.
  21
  22          If unsure, say N.
  23
  24config BTRFS_FS_POSIX_ACL
  25        bool "Btrfs POSIX Access Control Lists"
  26        depends on BTRFS_FS
  27        select FS_POSIX_ACL
  28        help
  29          POSIX Access Control Lists (ACLs) support permissions for users and
  30          groups beyond the owner/group/world scheme.
  31
  32          To learn more about Access Control Lists, visit the POSIX ACLs for
  33          Linux website <http://acl.bestbits.at/>.
  34
  35          If you don't know what Access Control Lists are, say N
  36
  37config BTRFS_FS_CHECK_INTEGRITY
  38        bool "Btrfs with integrity check tool compiled in (DANGEROUS)"
  39        depends on BTRFS_FS
  40        help
  41          Adds code that examines all block write requests (including
  42          writes of the super block). The goal is to verify that the
  43          state of the filesystem on disk is always consistent, i.e.,
  44          after a power-loss or kernel panic event the filesystem is
  45          in a consistent state.
  46
  47          If the integrity check tool is included and activated in
  48          the mount options, plenty of kernel memory is used, and
  49          plenty of additional CPU cycles are spent. Enabling this
  50          functionality is not intended for normal use.
  51
  52          In most cases, unless you are a btrfs developer who needs
  53          to verify the integrity of (super)-block write requests
  54          during the run of a regression test, say N
  55
  56config BTRFS_FS_RUN_SANITY_TESTS
  57        bool "Btrfs will run sanity tests upon loading"
  58        depends on BTRFS_FS
  59        help
  60          This will run some basic sanity tests on the free space cache
  61          code to make sure it is acting as it should.  These are mostly
  62          regression tests and are only really interesting to btrfs devlopers.
  63
  64          If unsure, say N.
  65
  66config BTRFS_DEBUG
  67        bool "Btrfs debugging support"
  68        depends on BTRFS_FS
  69        help
  70          Enable run-time debugging support for the btrfs filesystem. This may
  71          enable additional and expensive checks with negative impact on
  72          performance, or export extra information via sysfs.
  73
  74          If unsure, say N.
  75