1 # SPDX-License-Identifier: GPL-2.0-only
3 tristate "F2FS filesystem support"
7 select F2FS_FS_XATTR if FS_ENCRYPTION
9 F2FS is based on Log-structured File System (LFS), which supports
10 versatile "flash-friendly" features. The design has been focused on
11 addressing the fundamental issues in LFS, which are snowball effect
12 of wandering tree and high cleaning overhead.
14 Since flash-based storages show different characteristics according to
15 the internal geometry or flash memory management schemes aka FTL, F2FS
16 and tools support various parameters not only for configuring on-disk
17 layout, but also for selecting allocation and cleaning algorithms.
22 bool "F2FS Status Information"
23 depends on F2FS_FS && DEBUG_FS
26 /sys/kernel/debug/f2fs/ contains information about all the partitions
27 mounted as f2fs. Each file shows the whole f2fs information.
29 /sys/kernel/debug/f2fs/status includes:
30 - major filesystem information managed by f2fs currently
31 - average SIT information about whole segments
32 - current memory footprint consumed by f2fs.
35 bool "F2FS extended attributes"
39 Extended attributes are name:value pairs associated with inodes by
40 the kernel or by users (see the attr(5) manual page for details).
44 config F2FS_FS_POSIX_ACL
45 bool "F2FS Access Control Lists"
46 depends on F2FS_FS_XATTR
50 Posix Access Control Lists (ACLs) support permissions for users and
51 groups beyond the owner/group/world scheme.
53 If you don't know what Access Control Lists are, say N
55 config F2FS_FS_SECURITY
56 bool "F2FS Security Labels"
57 depends on F2FS_FS_XATTR
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.
65 If you are not using a security module, say N.
68 bool "F2FS consistency checking feature"
71 Enables BUG_ONs which check the filesystem consistency in runtime.
73 If you want to improve the performance, say N.
78 depends on FUNCTION_TRACER
80 F2FS IO trace is based on a function trace, which gathers process
81 information and block IO patterns in the filesystem level.
85 config F2FS_FAULT_INJECTION
86 bool "F2FS fault injection facility"
89 Test F2FS to inject faults such as ENOMEM, ENOSPC, and so on.