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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 help
10 F2FS is based on Log-structured File System (LFS), which supports
11 versatile "flash-friendly" features. The design has been focused on
12 addressing the fundamental issues in LFS, which are snowball effect
13 of wandering tree and high cleaning overhead.
14
15 Since flash-based storages show different characteristics according to
16 the internal geometry or flash memory management schemes aka FTL, F2FS
17 and tools support various parameters not only for configuring on-disk
18 layout, but also for selecting allocation and cleaning algorithms.
19
20 If unsure, say N.
21
22config F2FS_STAT_FS
23 bool "F2FS Status Information"
24 depends on F2FS_FS && DEBUG_FS
25 default y
26 help
27 /sys/kernel/debug/f2fs/ contains information about all the partitions
28 mounted as f2fs. Each file shows the whole f2fs information.
29
30 /sys/kernel/debug/f2fs/status includes:
31 - major filesystem information managed by f2fs currently
32 - average SIT information about whole segments
33 - current memory footprint consumed by f2fs.
34
35config F2FS_FS_XATTR
36 bool "F2FS extended attributes"
37 depends on F2FS_FS
38 default y
39 help
40 Extended attributes are name:value pairs associated with inodes by
41 the kernel or by users (see the attr(5) manual page for details).
42
43 If unsure, say N.
44
45config F2FS_FS_POSIX_ACL
46 bool "F2FS Access Control Lists"
47 depends on F2FS_FS_XATTR
48 select FS_POSIX_ACL
49 default y
50 help
51 Posix Access Control Lists (ACLs) support permissions for users and
52 groups beyond the owner/group/world scheme.
53
54 If you don't know what Access Control Lists are, say N
55
56config F2FS_FS_SECURITY
57 bool "F2FS Security Labels"
58 depends on F2FS_FS_XATTR
59 help
60 Security labels provide an access control facility to support Linux
61 Security Models (LSMs) accepted by AppArmor, SELinux, Smack and TOMOYO
62 Linux. This option enables an extended attribute handler for file
63 security labels in the f2fs filesystem, so that it requires enabling
64 the extended attribute support in advance. In particular you need this
65 option if you use the setcap command to assign initial process capabi-
66 lities to executables (the security.* extended attributes).
67
68 If you are not using a security module, say N.
69
70config F2FS_CHECK_FS
71 bool "F2FS consistency checking feature"
72 depends on F2FS_FS
73 help
74 Enables BUG_ONs which check the filesystem consistency in runtime.
75
76 If you want to improve the performance, say N.
77
78config F2FS_IO_TRACE
79 bool "F2FS IO tracer"
80 depends on F2FS_FS
81 depends on FUNCTION_TRACER
82 help
83 F2FS IO trace is based on a function trace, which gathers process
84 information and block IO patterns in the filesystem level.
85
86 If unsure, 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.
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.