2 tristate "F2FS filesystem support"
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.
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.
20 bool "F2FS Status Information"
21 depends on F2FS_FS && DEBUG_FS
24 /sys/kernel/debug/f2fs/ contains information about all the partitions
25 mounted as f2fs. Each file shows the whole f2fs information.
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.
33 bool "F2FS extended attributes"
37 Extended attributes are name:value pairs associated with inodes by
38 the kernel or by users (see the attr(5) manual page for details).
42 config F2FS_FS_POSIX_ACL
43 bool "F2FS Access Control Lists"
44 depends on F2FS_FS_XATTR
48 Posix Access Control Lists (ACLs) support permissions for users and
49 groups beyond the owner/group/world scheme.
51 If you don't know what Access Control Lists are, say N
53 config F2FS_FS_SECURITY
54 bool "F2FS Security Labels"
55 depends on F2FS_FS_XATTR
57 Security labels provide an access control facility to support Linux
58 Security Models (LSMs) accepted by AppArmor, SELinux, Smack and TOMOYO
59 Linux. This option enables an extended attribute handler for file
60 security labels in the f2fs filesystem, so that it requires enabling
61 the extended attribute support in advance.
63 If you are not using a security module, say N.
66 bool "F2FS consistency checking feature"
69 Enables BUG_ONs which check the filesystem consistency in runtime.
71 If you want to improve the performance, say N.
73 config F2FS_FS_ENCRYPTION
74 bool "F2FS Encryption"
76 depends on F2FS_FS_XATTR
79 Enable encryption of f2fs files and directories. This
80 feature is similar to ecryptfs, but it is more memory
81 efficient since it avoids caching the encrypted and
82 decrypted pages in the page cache.
87 depends on FUNCTION_TRACER
89 F2FS IO trace is based on a function trace, which gathers process
90 information and block IO patterns in the filesystem level.
94 config F2FS_FAULT_INJECTION
95 bool "F2FS fault injection facility"
98 Test F2FS to inject faults such as ENOMEM, ENOSPC, and so on.