Loading...
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.
1config F2FS_FS
2 tristate "F2FS filesystem support"
3 depends on BLOCK
4 select CRYPTO
5 select CRYPTO_CRC32
6 help
7 F2FS is based on Log-structured File System (LFS), which supports
8 versatile "flash-friendly" features. The design has been focused on
9 addressing the fundamental issues in LFS, which are snowball effect
10 of wandering tree and high cleaning overhead.
11
12 Since flash-based storages show different characteristics according to
13 the internal geometry or flash memory management schemes aka FTL, F2FS
14 and tools support various parameters not only for configuring on-disk
15 layout, but also for selecting allocation and cleaning algorithms.
16
17 If unsure, say N.
18
19config F2FS_STAT_FS
20 bool "F2FS Status Information"
21 depends on F2FS_FS && DEBUG_FS
22 default y
23 help
24 /sys/kernel/debug/f2fs/ contains information about all the partitions
25 mounted as f2fs. Each file shows the whole f2fs information.
26
27 /sys/kernel/debug/f2fs/status includes:
28 - major filesystem information managed by f2fs currently
29 - average SIT information about whole segments
30 - current memory footprint consumed by f2fs.
31
32config F2FS_FS_XATTR
33 bool "F2FS extended attributes"
34 depends on F2FS_FS
35 default y
36 help
37 Extended attributes are name:value pairs associated with inodes by
38 the kernel or by users (see the attr(5) manual page, or visit
39 <http://acl.bestbits.at/> for details).
40
41 If unsure, say N.
42
43config F2FS_FS_POSIX_ACL
44 bool "F2FS Access Control Lists"
45 depends on F2FS_FS_XATTR
46 select FS_POSIX_ACL
47 default y
48 help
49 Posix Access Control Lists (ACLs) support permissions for users and
50 groups beyond the owner/group/world scheme.
51
52 To learn more about Access Control Lists, visit the POSIX ACLs for
53 Linux website <http://acl.bestbits.at/>.
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.
66
67 If you are not using a security module, say N.
68
69config F2FS_CHECK_FS
70 bool "F2FS consistency checking feature"
71 depends on F2FS_FS
72 help
73 Enables BUG_ONs which check the filesystem consistency in runtime.
74
75 If you want to improve the performance, say N.
76
77config F2FS_FS_ENCRYPTION
78 bool "F2FS Encryption"
79 depends on F2FS_FS
80 depends on F2FS_FS_XATTR
81 select FS_ENCRYPTION
82 help
83 Enable encryption of f2fs files and directories. This
84 feature is similar to ecryptfs, but it is more memory
85 efficient since it avoids caching the encrypted and
86 decrypted pages in the page cache.
87
88config F2FS_IO_TRACE
89 bool "F2FS IO tracer"
90 depends on F2FS_FS
91 depends on FUNCTION_TRACER
92 help
93 F2FS IO trace is based on a function trace, which gathers process
94 information and block IO patterns in the filesystem level.
95
96 If unsure, say N.
97
98config F2FS_FAULT_INJECTION
99 bool "F2FS fault injection facility"
100 depends on F2FS_FS
101 help
102 Test F2FS to inject faults such as ENOMEM, ENOSPC, and so on.
103
104 If unsure, say N.