fs/btrfs/Kconfig

Source file repositories/reference/linux-study-clean/fs/btrfs/Kconfig

File Facts

System
Linux kernel
Corpus path
fs/btrfs/Kconfig
Extension
[no extension]
Size
3613 bytes
Lines
118
Domain
Core OS
Bucket
VFS And Filesystem Core
Inferred role
Core OS: build/configuration rule
Status
atlas-only

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

Dependency Surface

Detected Declarations

Annotated Snippet

# 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.

Annotation

Implementation Notes