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