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+# SPDX-License-Identifier: GPL-2.0
+
+config BTRFS_FS
+ tristate "Btrfs filesystem support"
+ select BLK_CGROUP_PUNT_BIO
+ select CRC32
+ select CRYPTO_LIB_BLAKE2B
+ select CRYPTO_LIB_SHA256
+ select ZLIB_INFLATE
+ select ZLIB_DEFLATE
+ select LZO_COMPRESS
+ select LZO_DECOMPRESS
+ select ZSTD_COMPRESS
+ select ZSTD_DECOMPRESS
+ select FS_IOMAP
+ select RAID6_PQ
+ select XOR_BLOCKS
+ select XXHASH
+ depends on PAGE_SIZE_LESS_THAN_256KB
+
+ help
+ Btrfs is a general purpose copy-on-write filesystem with extents,
+ writable snapshotting, support for multiple devices and many more
+ features focused on fault tolerance, repair and easy administration.
+
+ The filesystem disk format is no longer unstable, and it's not
+ expected to change unless there are strong reasons to do so. If there
+ is a format change, file systems with a unchanged format will
+ continue to be mountable and usable by newer kernels.
+
+ For more information, please see the web pages at
+ https://btrfs.readthedocs.io
+
+ To compile this file system support as a module, choose M here. The
+ module will be called btrfs.
+
+ If unsure, say N.
+
+config BTRFS_FS_POSIX_ACL
+ bool "Btrfs POSIX Access Control Lists"
+ depends on BTRFS_FS
+ select FS_POSIX_ACL
+ help
+ POSIX Access Control Lists (ACLs) support permissions for users and
+ groups beyond the owner/group/world scheme.
+
+ If you don't know what Access Control Lists are, say N
+
+config BTRFS_FS_RUN_SANITY_TESTS
+ bool "Btrfs will run sanity tests upon loading"
+ depends on BTRFS_FS
+ help
+ This will run sanity tests for core functionality like free space,
+ extent maps, extent io, extent buffers, inodes, qgroups and others,
+ at module load time. These are mostly regression tests and are only
+ interesting to developers.
+
+ If unsure, say N.
+
+config BTRFS_DEBUG
+ bool "Btrfs debugging support"
+ depends on BTRFS_FS
+ select REF_TRACKER if STACKTRACE_SUPPORT
+ help
+ Enable run-time debugging support for the btrfs filesystem.
+
+ Additional potentially expensive checks, debugging functionality or
+ sysfs exported information is enabled, like leak checks of internal
+ objects, optional forced space fragmentation and /sys/fs/btrfs/debug .
+ This has negative impact on performance.
+
+ If unsure, say N.
+
+config BTRFS_ASSERT
+ bool "Btrfs assert support"
+ depends on BTRFS_FS
+ help
+ Enable run-time assertion checking. Additional safety checks are
+ done, simple enough not to affect performance but verify invariants
+ and assumptions of code to run properly. This may result in panics,
+ and is meant for developers but can be enabled in general.
+
+ If unsure, say N.
+
+config BTRFS_EXPERIMENTAL
+ bool "Btrfs experimental features"
+ depends on BTRFS_FS
+ default n
+ help
+ Enable experimental features. These features may not be stable enough
+ for end users. This is meant for btrfs developers or users who wish
+ to test the functionality and report problems.
+
+ Current list:
+
+ - RAID mirror read policy - additional read policies for balancing
+ reading from redundant block group
+ profiles (currently: pid, round-robin,
+ fixed devid)
+
+ - send stream protocol v3 - fs-verity support
+
+ - raid-stripe-tree - additional mapping of extents to devices to
+ support RAID1* profiles on zoned devices,
+ RAID56 not yet supported
+
+ - extent tree v2 - complex rework of extent tracking
+
+ - block size > page size support - needs transparent huge page and
+ non-HIGHMEM system
+
+ - huge folios for data - folios can be as large as 2MiB now
+
+ - asynchronous checksum generation for data writes
+
+ - remap-tree - logical address remapping tree
+
+ If unsure, say N.