1config BTRFS_FS 2 tristate "Btrfs filesystem (EXPERIMENTAL) Unstable disk format" 3 depends on EXPERIMENTAL 4 select LIBCRC32C 5 select ZLIB_INFLATE 6 select ZLIB_DEFLATE 7 select LZO_COMPRESS 8 select LZO_DECOMPRESS 9 help 10 Btrfs is a new filesystem with extents, writable snapshotting, 11 support for multiple devices and many more features. 12 13 Btrfs is highly experimental, and THE DISK FORMAT IS NOT YET 14 FINALIZED. You should say N here unless you are interested in 15 testing Btrfs with non-critical data. 16 17 To compile this file system support as a module, choose M here. The 18 module will be called btrfs. 19 20 If unsure, say N. 21 22config BTRFS_FS_POSIX_ACL 23 bool "Btrfs POSIX Access Control Lists" 24 depends on BTRFS_FS 25 select FS_POSIX_ACL 26 help 27 POSIX Access Control Lists (ACLs) support permissions for users and 28 groups beyond the owner/group/world scheme. 29 30 To learn more about Access Control Lists, visit the POSIX ACLs for 31 Linux website <http://acl.bestbits.at/>. 32 33 If you don't know what Access Control Lists are, say N 34 35config BTRFS_FS_CHECK_INTEGRITY 36 bool "Btrfs with integrity check tool compiled in (DANGEROUS)" 37 depends on BTRFS_FS 38 help 39 Adds code that examines all block write requests (including 40 writes of the super block). The goal is to verify that the 41 state of the filesystem on disk is always consistent, i.e., 42 after a power-loss or kernel panic event the filesystem is 43 in a consistent state. 44 45 If the integrity check tool is included and activated in 46 the mount options, plenty of kernel memory is used, and 47 plenty of additional CPU cycles are spent. Enabling this 48 functionality is not intended for normal use. 49 50 In most cases, unless you are a btrfs developer who needs 51 to verify the integrity of (super)-block write requests 52 during the run of a regression test, say N 53