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1# SPDX-License-Identifier: GPL-2.02 3config BTRFS_FS4 tristate "Btrfs filesystem support"5 select BLK_CGROUP_PUNT_BIO6 select CRYPTO7 select CRYPTO_CRC32C8 select LIBCRC32C9 select CRYPTO_XXHASH10 select CRYPTO_SHA25611 select CRYPTO_BLAKE2B12 select ZLIB_INFLATE13 select ZLIB_DEFLATE14 select LZO_COMPRESS15 select LZO_DECOMPRESS16 select ZSTD_COMPRESS17 select ZSTD_DECOMPRESS18 select FS_IOMAP19 select RAID6_PQ20 select XOR_BLOCKS21 depends on PAGE_SIZE_LESS_THAN_256KB22 23 help24 Btrfs is a general purpose copy-on-write filesystem with extents,25 writable snapshotting, support for multiple devices and many more26 features focused on fault tolerance, repair and easy administration.27 28 The filesystem disk format is no longer unstable, and it's not29 expected to change unless there are strong reasons to do so. If there30 is a format change, file systems with a unchanged format will31 continue to be mountable and usable by newer kernels.32 33 For more information, please see the web pages at34 https://btrfs.readthedocs.io35 36 To compile this file system support as a module, choose M here. The37 module will be called btrfs.38 39 If unsure, say N.40 41config BTRFS_FS_POSIX_ACL42 bool "Btrfs POSIX Access Control Lists"43 depends on BTRFS_FS44 select FS_POSIX_ACL45 help46 POSIX Access Control Lists (ACLs) support permissions for users and47 groups beyond the owner/group/world scheme.48 49 If you don't know what Access Control Lists are, say N50 51config BTRFS_FS_RUN_SANITY_TESTS52 bool "Btrfs will run sanity tests upon loading"53 depends on BTRFS_FS54 help55 This will run some basic sanity tests on the free space cache56 code to make sure it is acting as it should. These are mostly57 regression tests and are only really interesting to btrfs58 developers.59 60 If unsure, say N.61 62config BTRFS_DEBUG63 bool "Btrfs debugging support"64 depends on BTRFS_FS65 help66 Enable run-time debugging support for the btrfs filesystem. This may67 enable additional and expensive checks with negative impact on68 performance, or export extra information via sysfs.69 70 If unsure, say N.71 72config BTRFS_ASSERT73 bool "Btrfs assert support"74 depends on BTRFS_FS75 help76 Enable run-time assertion checking. This will result in panics if77 any of the assertions trip. This is meant for btrfs developers only.78 79 If unsure, say N.80 81config BTRFS_FS_REF_VERIFY82 bool "Btrfs with the ref verify tool compiled in"83 depends on BTRFS_FS84 default n85 help86 Enable run-time extent reference verification instrumentation. This87 is meant to be used by btrfs developers for tracking down extent88 reference problems or verifying they didn't break something.89 90 If unsure, say N.91