2 tristate "F2FS filesystem support"
6 select F2FS_FS_XATTR if FS_ENCRYPTION
8 F2FS is based on Log-structured File System (LFS), which supports
9 versatile "flash-friendly" features. The design has been focused on
10 addressing the fundamental issues in LFS, which are snowball effect
11 of wandering tree and high cleaning overhead.
13 Since flash-based storages show different characteristics according to
14 the internal geometry or flash memory management schemes aka FTL, F2FS
15 and tools support various parameters not only for configuring on-disk
16 layout, but also for selecting allocation and cleaning algorithms.
21 bool "F2FS Status Information"
22 depends on F2FS_FS && DEBUG_FS
25 /sys/kernel/debug/f2fs/ contains information about all the partitions
26 mounted as f2fs. Each file shows the whole f2fs information.
28 /sys/kernel/debug/f2fs/status includes:
29 - major filesystem information managed by f2fs currently
30 - average SIT information about whole segments
31 - current memory footprint consumed by f2fs.
34 bool "F2FS extended attributes"
38 Extended attributes are name:value pairs associated with inodes by
39 the kernel or by users (see the attr(5) manual page for details).
43 config F2FS_FS_POSIX_ACL
44 bool "F2FS Access Control Lists"
45 depends on F2FS_FS_XATTR
49 Posix Access Control Lists (ACLs) support permissions for users and
50 groups beyond the owner/group/world scheme.
52 If you don't know what Access Control Lists are, say N
54 config F2FS_FS_SECURITY
55 bool "F2FS Security Labels"
56 depends on F2FS_FS_XATTR
58 Security labels provide an access control facility to support Linux
59 Security Models (LSMs) accepted by AppArmor, SELinux, Smack and TOMOYO
60 Linux. This option enables an extended attribute handler for file
61 security labels in the f2fs filesystem, so that it requires enabling
62 the extended attribute support in advance.
64 If you are not using a security module, say N.
67 bool "F2FS consistency checking feature"
70 Enables BUG_ONs which check the filesystem consistency in runtime.
72 If you want to improve the performance, say N.
77 depends on FUNCTION_TRACER
79 F2FS IO trace is based on a function trace, which gathers process
80 information and block IO patterns in the filesystem level.
84 config F2FS_FAULT_INJECTION
85 bool "F2FS fault injection facility"
88 Test F2FS to inject faults such as ENOMEM, ENOSPC, and so on.