1 # SPDX-License-Identifier: GPL-2.0-only
3 tristate "F2FS filesystem support"
8 select F2FS_FS_XATTR if FS_ENCRYPTION
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.
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.
23 bool "F2FS Status Information"
24 depends on F2FS_FS && DEBUG_FS
27 /sys/kernel/debug/f2fs/ contains information about all the partitions
28 mounted as f2fs. Each file shows the whole f2fs information.
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.
36 bool "F2FS extended attributes"
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).
45 config F2FS_FS_POSIX_ACL
46 bool "F2FS Access Control Lists"
47 depends on F2FS_FS_XATTR
51 Posix Access Control Lists (ACLs) support permissions for users and
52 groups beyond the owner/group/world scheme.
54 If you don't know what Access Control Lists are, say N
56 config F2FS_FS_SECURITY
57 bool "F2FS Security Labels"
58 depends on F2FS_FS_XATTR
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).
68 If you are not using a security module, say N.
71 bool "F2FS consistency checking feature"
74 Enables BUG_ONs which check the filesystem consistency in runtime.
76 If you want to improve the performance, say N.
81 depends on FUNCTION_TRACER
83 F2FS IO trace is based on a function trace, which gathers process
84 information and block IO patterns in the filesystem level.
88 config F2FS_FAULT_INJECTION
89 bool "F2FS fault injection facility"
92 Test F2FS to inject faults such as ENOMEM, ENOSPC, and so on.