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 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