2 tristate "F2FS filesystem support"
5 F2FS is based on Log-structured File System (LFS), which supports
6 versatile "flash-friendly" features. The design has been focused on
7 addressing the fundamental issues in LFS, which are snowball effect
8 of wandering tree and high cleaning overhead.
10 Since flash-based storages show different characteristics according to
11 the internal geometry or flash memory management schemes aka FTL, F2FS
12 and tools support various parameters not only for configuring on-disk
13 layout, but also for selecting allocation and cleaning algorithms.
18 bool "F2FS Status Information"
19 depends on F2FS_FS && DEBUG_FS
22 /sys/kernel/debug/f2fs/ contains information about all the partitions
23 mounted as f2fs. Each file shows the whole f2fs information.
25 /sys/kernel/debug/f2fs/status includes:
26 - major filesystem information managed by f2fs currently
27 - average SIT information about whole segments
28 - current memory footprint consumed by f2fs.
31 bool "F2FS extended attributes"
35 Extended attributes are name:value pairs associated with inodes by
36 the kernel or by users (see the attr(5) manual page, or visit
37 <http://acl.bestbits.at/> for details).
41 config F2FS_FS_POSIX_ACL
42 bool "F2FS Access Control Lists"
43 depends on F2FS_FS_XATTR
47 Posix Access Control Lists (ACLs) support permissions for users and
48 gourps beyond the owner/group/world scheme.
50 To learn more about Access Control Lists, visit the POSIX ACLs for
51 Linux website <http://acl.bestbits.at/>.
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.