1# SPDX-License-Identifier: GPL-2.0-only
  2config F2FS_FS
  3	tristate "F2FS filesystem support"
  4	depends on BLOCK
  5	select NLS
  6	select CRYPTO
  7	select CRYPTO_CRC32
  8	select F2FS_FS_XATTR if FS_ENCRYPTION
  9	select FS_ENCRYPTION_ALGS if FS_ENCRYPTION
 10	help
 11	  F2FS is based on Log-structured File System (LFS), which supports
 12	  versatile "flash-friendly" features. The design has been focused on
 13	  addressing the fundamental issues in LFS, which are snowball effect
 14	  of wandering tree and high cleaning overhead.
 15
 16	  Since flash-based storages show different characteristics according to
 17	  the internal geometry or flash memory management schemes aka FTL, F2FS
 18	  and tools support various parameters not only for configuring on-disk
 19	  layout, but also for selecting allocation and cleaning algorithms.
 20
 21	  If unsure, say N.
 22
 23config F2FS_STAT_FS
 24	bool "F2FS Status Information"
 25	depends on F2FS_FS
 26	default y
 27	help
 28	  /sys/kernel/debug/f2fs/ contains information about all the partitions
 29	  mounted as f2fs. Each file shows the whole f2fs information.
 30
 31	  /sys/kernel/debug/f2fs/status includes:
 32	    - major filesystem information managed by f2fs currently
 33	    - average SIT information about whole segments
 34	    - current memory footprint consumed by f2fs.
 35
 36config F2FS_FS_XATTR
 37	bool "F2FS extended attributes"
 38	depends on F2FS_FS
 39	default y
 40	help
 41	  Extended attributes are name:value pairs associated with inodes by
 42	  the kernel or by users (see the attr(5) manual page for details).
 43
 44	  If unsure, say N.
 45
 46config F2FS_FS_POSIX_ACL
 47	bool "F2FS Access Control Lists"
 48	depends on F2FS_FS_XATTR
 49	select FS_POSIX_ACL
 50	default y
 51	help
 52	  Posix Access Control Lists (ACLs) support permissions for users and
 53	  groups beyond the owner/group/world scheme.
 54
 55	  If you don't know what Access Control Lists are, say N
 56
 57config F2FS_FS_SECURITY
 58	bool "F2FS Security Labels"
 59	depends on F2FS_FS_XATTR
 60	help
 61	  Security labels provide an access control facility to support Linux
 62	  Security Models (LSMs) accepted by AppArmor, SELinux, Smack and TOMOYO
 63	  Linux. This option enables an extended attribute handler for file
 64	  security labels in the f2fs filesystem, so that it requires enabling
 65	  the extended attribute support in advance. In particular you need this
 66	  option if you use the setcap command to assign initial process capabi-
 67	  lities to executables (the security.* extended attributes).
 68
 69	  If you are not using a security module, say N.
 70
 71config F2FS_CHECK_FS
 72	bool "F2FS consistency checking feature"
 73	depends on F2FS_FS
 74	help
 75	  Enables BUG_ONs which check the filesystem consistency in runtime.
 76
 77	  If you want to improve the performance, say N.
 78
 79config F2FS_IO_TRACE
 80	bool "F2FS IO tracer"
 81	depends on F2FS_FS
 82	depends on FUNCTION_TRACER
 83	help
 84	  F2FS IO trace is based on a function trace, which gathers process
 85	  information and block IO patterns in the filesystem level.
 86
 87	  If unsure, say N.
 88
 89config F2FS_FAULT_INJECTION
 90	bool "F2FS fault injection facility"
 91	depends on F2FS_FS
 92	help
 93	  Test F2FS to inject faults such as ENOMEM, ENOSPC, and so on.
 94
 95	  If unsure, say N.
 96
 97config F2FS_FS_COMPRESSION
 98	bool "F2FS compression feature"
 99	depends on F2FS_FS
100	help
101	  Enable filesystem-level compression on f2fs regular files,
102	  multiple back-end compression algorithms are supported.
103
104config F2FS_FS_LZO
105	bool "LZO compression support"
106	depends on F2FS_FS_COMPRESSION
107	select LZO_COMPRESS
108	select LZO_DECOMPRESS
109	default y
110	help
111	  Support LZO compress algorithm, if unsure, say Y.
112
113config F2FS_FS_LZ4
114	bool "LZ4 compression support"
115	depends on F2FS_FS_COMPRESSION
116	select LZ4_COMPRESS
117	select LZ4_DECOMPRESS
118	default y
119	help
120	  Support LZ4 compress algorithm, if unsure, say Y.
121
122config F2FS_FS_ZSTD
123	bool "ZSTD compression support"
124	depends on F2FS_FS_COMPRESSION
125	select ZSTD_COMPRESS
126	select ZSTD_DECOMPRESS
127	default y
128	help
129	  Support ZSTD compress algorithm, if unsure, say Y.
130
131config F2FS_FS_LZORLE
132	bool "LZO-RLE compression support"
133	depends on F2FS_FS_COMPRESSION
134	depends on F2FS_FS_LZO
135	select LZO_COMPRESS
136	select LZO_DECOMPRESS
137	default y
138	help
139	  Support LZO-RLE compress algorithm, if unsure, say Y.