fs/btrfs/Kconfig

   1 config 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 general purpose copy-on-write filesystem with extents,
  13           writable snapshotting, support for multiple devices and many more
  14           features focused on fault tolerance, repair and easy administration.
  15
  16           The filesystem disk format is no longer unstable, and it's not
  17           expected to change unless there are strong reasons to do so. If there
  18           is a format change, file systems with a unchanged format will
  19           continue to be mountable and usable by newer kernels.
  20
  21           For more information, please see the web pages at
  22           http://btrfs.wiki.kernel.org.
  23
  24           To compile this file system support as a module, choose M here. The
  25           module will be called btrfs.
  26
  27           If unsure, say N.
  28
  29 config BTRFS_FS_POSIX_ACL
  30         bool "Btrfs POSIX Access Control Lists"
  31         depends on BTRFS_FS
  32         select FS_POSIX_ACL
  33         help
  34           POSIX Access Control Lists (ACLs) support permissions for users and
  35           groups beyond the owner/group/world scheme.
  36
  37           To learn more about Access Control Lists, visit the POSIX ACLs for
  38           Linux website <http://acl.bestbits.at/>.
  39
  40           If you don't know what Access Control Lists are, say N
  41
  42 config BTRFS_FS_CHECK_INTEGRITY
  43         bool "Btrfs with integrity check tool compiled in (DANGEROUS)"
  44         depends on BTRFS_FS
  45         help
  46           Adds code that examines all block write requests (including
  47           writes of the super block). The goal is to verify that the
  48           state of the filesystem on disk is always consistent, i.e.,
  49           after a power-loss or kernel panic event the filesystem is
  50           in a consistent state.
  51
  52           If the integrity check tool is included and activated in
  53           the mount options, plenty of kernel memory is used, and
  54           plenty of additional CPU cycles are spent. Enabling this
  55           functionality is not intended for normal use.
  56
  57           In most cases, unless you are a btrfs developer who needs
  58           to verify the integrity of (super)-block write requests
  59           during the run of a regression test, say N
  60
  61 config BTRFS_FS_RUN_SANITY_TESTS
  62         bool "Btrfs will run sanity tests upon loading"
  63         depends on BTRFS_FS
  64         help
  65           This will run some basic sanity tests on the free space cache
  66           code to make sure it is acting as it should.  These are mostly
  67           regression tests and are only really interesting to btrfs
  68           developers.
  69
  70           If unsure, say N.
  71
  72 config BTRFS_DEBUG
  73         bool "Btrfs debugging support"
  74         depends on BTRFS_FS
  75         help
  76           Enable run-time debugging support for the btrfs filesystem. This may
  77           enable additional and expensive checks with negative impact on
  78           performance, or export extra information via sysfs.
  79
  80           If unsure, say N.
  81
  82 config BTRFS_ASSERT
  83         bool "Btrfs assert support"
  84         depends on BTRFS_FS
  85         help
  86           Enable run-time assertion checking.  This will result in panics if
  87           any of the assertions trip.  This is meant for btrfs developers only.
  88
  89           If unsure, say N.