1 # SPDX-License-Identifier: GPL-2.0-only
2 # Ext3 configs are here for backward compatibi
3 # have EXT3_FS set but not EXT4_FS set and thu
4 # kernels after the removal of ext3 driver.
5 config EXT3_FS
6 tristate "The Extended 3 (ext3) filesy
7 select EXT4_FS
8 help
9 This config option is here only for
10 filesystem is now handled by the ext
11
12 config EXT3_FS_POSIX_ACL
13 bool "Ext3 POSIX Access Control Lists"
14 depends on EXT3_FS
15 select EXT4_FS_POSIX_ACL
16 select FS_POSIX_ACL
17 help
18 This config option is here only for
19 filesystem is now handled by the ext
20
21 config EXT3_FS_SECURITY
22 bool "Ext3 Security Labels"
23 depends on EXT3_FS
24 select EXT4_FS_SECURITY
25 help
26 This config option is here only for
27 filesystem is now handled by the ext
28
29 config EXT4_FS
30 tristate "The Extended 4 (ext4) filesy
31 select BUFFER_HEAD
32 select JBD2
33 select CRC16
34 select CRYPTO
35 select CRYPTO_CRC32C
36 select FS_IOMAP
37 select FS_ENCRYPTION_ALGS if FS_ENCRYP
38 help
39 This is the next generation of the e
40
41 Unlike the change from ext2 filesyst
42 the on-disk format of ext4 is not fo
43 ext3; it is based on extent maps and
44 physical block numbers. The ext4 fi
45 allocation, persistent preallocation
46 and a number of other features to im
47 up fsck time. For more information,
48 http://ext4.wiki.kernel.org.
49
50 The ext4 filesystem supports mountin
51 are some performance gains from the
52 table readahead, the best performanc
53 features in the filesystem using tun
54 filesystem as an ext4 filesystem ini
55 of ext4 features, the on disk filesy
56 compatible.
57
58 To compile this file system support
59 module will be called ext4.
60
61 If unsure, say N.
62
63 config EXT4_USE_FOR_EXT2
64 bool "Use ext4 for ext2 file systems"
65 depends on EXT4_FS
66 depends on EXT2_FS=n
67 default y
68 help
69 Allow the ext4 file system driver co
70 file system mounts. This allows use
71 compiled kernel size by using one fi
72 ext2, ext3, and ext4 file systems.
73
74 config EXT4_FS_POSIX_ACL
75 bool "Ext4 POSIX Access Control Lists"
76 depends on EXT4_FS
77 select FS_POSIX_ACL
78 help
79 POSIX Access Control Lists (ACLs) su
80 groups beyond the owner/group/world
81
82 If you don't know what Access Contro
83
84 config EXT4_FS_SECURITY
85 bool "Ext4 Security Labels"
86 depends on EXT4_FS
87 help
88 Security labels support alternative
89 implemented by security modules like
90 enables an extended attribute handle
91 labels in the ext4 filesystem.
92
93 If you are not using a security modu
94 extended attributes for file securit
95
96 config EXT4_DEBUG
97 bool "Ext4 debugging support"
98 depends on EXT4_FS
99 help
100 Enables run-time debugging support f
101
102 If you select Y here, then you will
103 using dynamic debug control for mb_d
104
105 config EXT4_KUNIT_TESTS
106 tristate "KUnit tests for ext4" if !KU
107 depends on EXT4_FS && KUNIT
108 default KUNIT_ALL_TESTS
109 help
110 This builds the ext4 KUnit tests.
111
112 KUnit tests run during boot and outp
113 in TAP format (https://testanything.
114 running KUnit test harness and are n
115 build.
116
117 For more information on KUnit and un
118 to the KUnit documentation in Docume
119
120 If unsure, say N.
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