1335debeeSAlexey Dobriyanconfig BTRFS_FS 238db331bSKees Cook tristate "Btrfs filesystem Unstable disk format" 3335debeeSAlexey Dobriyan select LIBCRC32C 4335debeeSAlexey Dobriyan select ZLIB_INFLATE 5335debeeSAlexey Dobriyan select ZLIB_DEFLATE 6a6fa6faeSLi Zefan select LZO_COMPRESS 7a6fa6faeSLi Zefan select LZO_DECOMPRESS 8335debeeSAlexey Dobriyan help 9335debeeSAlexey Dobriyan Btrfs is a new filesystem with extents, writable snapshotting, 10335debeeSAlexey Dobriyan support for multiple devices and many more features. 11335debeeSAlexey Dobriyan 12335debeeSAlexey Dobriyan Btrfs is highly experimental, and THE DISK FORMAT IS NOT YET 13335debeeSAlexey Dobriyan FINALIZED. You should say N here unless you are interested in 14335debeeSAlexey Dobriyan testing Btrfs with non-critical data. 15335debeeSAlexey Dobriyan 16335debeeSAlexey Dobriyan To compile this file system support as a module, choose M here. The 17335debeeSAlexey Dobriyan module will be called btrfs. 18335debeeSAlexey Dobriyan 19335debeeSAlexey Dobriyan If unsure, say N. 20bef62ef3SChristian Hesse 21bef62ef3SChristian Hesseconfig BTRFS_FS_POSIX_ACL 22bef62ef3SChristian Hesse bool "Btrfs POSIX Access Control Lists" 23bef62ef3SChristian Hesse depends on BTRFS_FS 24bef62ef3SChristian Hesse select FS_POSIX_ACL 25bef62ef3SChristian Hesse help 26bef62ef3SChristian Hesse POSIX Access Control Lists (ACLs) support permissions for users and 27bef62ef3SChristian Hesse groups beyond the owner/group/world scheme. 28bef62ef3SChristian Hesse 29bef62ef3SChristian Hesse To learn more about Access Control Lists, visit the POSIX ACLs for 30bef62ef3SChristian Hesse Linux website <http://acl.bestbits.at/>. 31bef62ef3SChristian Hesse 32bef62ef3SChristian Hesse If you don't know what Access Control Lists are, say N 33c975dd46SStefan Behrens 34c975dd46SStefan Behrensconfig BTRFS_FS_CHECK_INTEGRITY 35c975dd46SStefan Behrens bool "Btrfs with integrity check tool compiled in (DANGEROUS)" 36c975dd46SStefan Behrens depends on BTRFS_FS 37c975dd46SStefan Behrens help 38c975dd46SStefan Behrens Adds code that examines all block write requests (including 39c975dd46SStefan Behrens writes of the super block). The goal is to verify that the 40c975dd46SStefan Behrens state of the filesystem on disk is always consistent, i.e., 41c975dd46SStefan Behrens after a power-loss or kernel panic event the filesystem is 42c975dd46SStefan Behrens in a consistent state. 43c975dd46SStefan Behrens 44c975dd46SStefan Behrens If the integrity check tool is included and activated in 45c975dd46SStefan Behrens the mount options, plenty of kernel memory is used, and 46c975dd46SStefan Behrens plenty of additional CPU cycles are spent. Enabling this 47c975dd46SStefan Behrens functionality is not intended for normal use. 48c975dd46SStefan Behrens 49c975dd46SStefan Behrens In most cases, unless you are a btrfs developer who needs 50c975dd46SStefan Behrens to verify the integrity of (super)-block write requests 51c975dd46SStefan Behrens during the run of a regression test, say N 52