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