1config F2FS_FS
 2	tristate "F2FS filesystem support (EXPERIMENTAL)"
 3	depends on BLOCK
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 4	help
 5	  F2FS is based on Log-structured File System (LFS), which supports
 6	  versatile "flash-friendly" features. The design has been focused on
 7	  addressing the fundamental issues in LFS, which are snowball effect
 8	  of wandering tree and high cleaning overhead.
 9
10	  Since flash-based storages show different characteristics according to
11	  the internal geometry or flash memory management schemes aka FTL, F2FS
12	  and tools support various parameters not only for configuring on-disk
13	  layout, but also for selecting allocation and cleaning algorithms.
14
15	  If unsure, say N.
16
17config F2FS_STAT_FS
18	bool "F2FS Status Information"
19	depends on F2FS_FS && DEBUG_FS
20	default y
21	help
22	  /sys/kernel/debug/f2fs/ contains information about all the partitions
23	  mounted as f2fs. Each file shows the whole f2fs information.
24
25	  /sys/kernel/debug/f2fs/status includes:
26	    - major file system information managed by f2fs currently
27	    - average SIT information about whole segments
28	    - current memory footprint consumed by f2fs.
29
30config F2FS_FS_XATTR
31	bool "F2FS extended attributes"
32	depends on F2FS_FS
33	default y
34	help
35	  Extended attributes are name:value pairs associated with inodes by
36	  the kernel or by users (see the attr(5) manual page, or visit
37	  <http://acl.bestbits.at/> for details).
38
39	  If unsure, say N.
40
41config F2FS_FS_POSIX_ACL
42	bool "F2FS Access Control Lists"
43	depends on F2FS_FS_XATTR
44	select FS_POSIX_ACL
45	default y
46	help
47	  Posix Access Control Lists (ACLs) support permissions for users and
48	  gourps beyond the owner/group/world scheme.
49
50	  To learn more about Access Control Lists, visit the POSIX ACLs for
51	  Linux website <http://acl.bestbits.at/>.
52
53	  If you don't know what Access Control Lists are, say N
54
55config F2FS_FS_SECURITY
56	bool "F2FS Security Labels"
57	depends on F2FS_FS_XATTR
58	help
59	  Security labels provide an access control facility to support Linux
60	  Security Models (LSMs) accepted by AppArmor, SELinux, Smack and TOMOYO
61	  Linux. This option enables an extended attribute handler for file
62	  security labels in the f2fs filesystem, so that it requires enabling
63	  the extended attribute support in advance.
 
 
64
65	  If you are not using a security module, say N.
66
67config F2FS_CHECK_FS
68	bool "F2FS consistency checking feature"
69	depends on F2FS_FS
70	help
71	  Enables BUG_ONs which check the file system consistency in runtime.
72
73	  If you want to improve the performance, say N.

  1# SPDX-License-Identifier: GPL-2.0-only
  2config F2FS_FS
  3	tristate "F2FS filesystem support"
  4	depends on BLOCK
  5	select BUFFER_HEAD
  6	select NLS
  7	select CRYPTO
  8	select CRYPTO_CRC32
  9	select F2FS_FS_XATTR if FS_ENCRYPTION
 10	select FS_ENCRYPTION_ALGS if FS_ENCRYPTION
 11	select FS_IOMAP
 12	select LZ4_COMPRESS if F2FS_FS_LZ4
 13	select LZ4_DECOMPRESS if F2FS_FS_LZ4
 14	select LZ4HC_COMPRESS if F2FS_FS_LZ4HC
 15	select LZO_COMPRESS if F2FS_FS_LZO
 16	select LZO_DECOMPRESS if F2FS_FS_LZO
 17	select ZSTD_COMPRESS if F2FS_FS_ZSTD
 18	select ZSTD_DECOMPRESS if F2FS_FS_ZSTD
 19	help
 20	  F2FS is based on Log-structured File System (LFS), which supports
 21	  versatile "flash-friendly" features. The design has been focused on
 22	  addressing the fundamental issues in LFS, which are snowball effect
 23	  of wandering tree and high cleaning overhead.
 24
 25	  Since flash-based storages show different characteristics according to
 26	  the internal geometry or flash memory management schemes aka FTL, F2FS
 27	  and tools support various parameters not only for configuring on-disk
 28	  layout, but also for selecting allocation and cleaning algorithms.
 29
 30	  If unsure, say N.
 31
 32config F2FS_STAT_FS
 33	bool "F2FS Status Information"
 34	depends on F2FS_FS
 35	default y
 36	help
 37	  /sys/kernel/debug/f2fs/ contains information about all the partitions
 38	  mounted as f2fs. Each file shows the whole f2fs information.
 39
 40	  /sys/kernel/debug/f2fs/status includes:
 41	    - major filesystem information managed by f2fs currently
 42	    - average SIT information about whole segments
 43	    - current memory footprint consumed by f2fs.
 44
 45config F2FS_FS_XATTR
 46	bool "F2FS extended attributes"
 47	depends on F2FS_FS
 48	default y
 49	help
 50	  Extended attributes are name:value pairs associated with inodes by
 51	  the kernel or by users (see the attr(5) manual page for details).
 
 52
 53	  If unsure, say N.
 54
 55config F2FS_FS_POSIX_ACL
 56	bool "F2FS Access Control Lists"
 57	depends on F2FS_FS_XATTR
 58	select FS_POSIX_ACL
 59	default y
 60	help
 61	  Posix Access Control Lists (ACLs) support permissions for users and
 62	  groups beyond the owner/group/world scheme.
 
 
 
 63
 64	  If you don't know what Access Control Lists are, say N
 65
 66config F2FS_FS_SECURITY
 67	bool "F2FS Security Labels"
 68	depends on F2FS_FS_XATTR
 69	help
 70	  Security labels provide an access control facility to support Linux
 71	  Security Models (LSMs) accepted by AppArmor, SELinux, Smack and TOMOYO
 72	  Linux. This option enables an extended attribute handler for file
 73	  security labels in the f2fs filesystem, so that it requires enabling
 74	  the extended attribute support in advance. In particular you need this
 75	  option if you use the setcap command to assign initial process capabi-
 76	  lities to executables (the security.* extended attributes).
 77
 78	  If you are not using a security module, say N.
 79
 80config F2FS_CHECK_FS
 81	bool "F2FS consistency checking feature"
 82	depends on F2FS_FS
 83	help
 84	  Enables BUG_ONs which check the filesystem consistency in runtime.
 85
 86	  If you want to improve the performance, say N.
 87
 88config F2FS_FAULT_INJECTION
 89	bool "F2FS fault injection facility"
 90	depends on F2FS_FS
 91	help
 92	  Test F2FS to inject faults such as ENOMEM, ENOSPC, and so on.
 93
 94	  If unsure, say N.
 95
 96config F2FS_FS_COMPRESSION
 97	bool "F2FS compression feature"
 98	depends on F2FS_FS
 99	help
100	  Enable filesystem-level compression on f2fs regular files,
101	  multiple back-end compression algorithms are supported.
102
103config F2FS_FS_LZO
104	bool "LZO compression support"
105	depends on F2FS_FS_COMPRESSION
106	default y
107	help
108	  Support LZO compress algorithm, if unsure, say Y.
109
110config F2FS_FS_LZORLE
111	bool "LZO-RLE compression support"
112	depends on F2FS_FS_LZO
113	default y
114	help
115	  Support LZO-RLE compress algorithm, if unsure, say Y.
116
117config F2FS_FS_LZ4
118	bool "LZ4 compression support"
119	depends on F2FS_FS_COMPRESSION
120	default y
121	help
122	  Support LZ4 compress algorithm, if unsure, say Y.
123
124config F2FS_FS_LZ4HC
125	bool "LZ4HC compression support"
126	depends on F2FS_FS_LZ4
127	default y
128	help
129	  Support LZ4HC compress algorithm, LZ4HC has compatible on-disk
130	  layout with LZ4, if unsure, say Y.
131
132config F2FS_FS_ZSTD
133	bool "ZSTD compression support"
134	depends on F2FS_FS_COMPRESSION
135	default y
136	help
137	  Support ZSTD compress algorithm, if unsure, say Y.
138
139config F2FS_IOSTAT
140	bool "F2FS IO statistics information"
141	depends on F2FS_FS
142	default y
143	help
144	  Support getting IO statistics through sysfs and printing out periodic
145	  IO statistics tracepoint events. You have to turn on "iostat_enable"
146	  sysfs node to enable this feature.
147
148config F2FS_UNFAIR_RWSEM
149	bool "F2FS unfair rw_semaphore"
150	depends on F2FS_FS && BLK_CGROUP
151	help
152	  Use unfair rw_semaphore, if system configured IO priority by block
153	  cgroup.