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- config F2FS_FS
- tristate "F2FS filesystem support"
- depends on BLOCK
- select CRYPTO
- select CRYPTO_CRC32
- help
- F2FS is based on Log-structured File System (LFS), which supports
- versatile "flash-friendly" features. The design has been focused on
- addressing the fundamental issues in LFS, which are snowball effect
- of wandering tree and high cleaning overhead.
- Since flash-based storages show different characteristics according to
- the internal geometry or flash memory management schemes aka FTL, F2FS
- and tools support various parameters not only for configuring on-disk
- layout, but also for selecting allocation and cleaning algorithms.
- If unsure, say N.
- config F2FS_STAT_FS
- bool "F2FS Status Information"
- depends on F2FS_FS && DEBUG_FS
- default y
- help
- /sys/kernel/debug/f2fs/ contains information about all the partitions
- mounted as f2fs. Each file shows the whole f2fs information.
- /sys/kernel/debug/f2fs/status includes:
- - major filesystem information managed by f2fs currently
- - average SIT information about whole segments
- - current memory footprint consumed by f2fs.
- config F2FS_FS_XATTR
- bool "F2FS extended attributes"
- depends on F2FS_FS
- default y
- help
- Extended attributes are name:value pairs associated with inodes by
- the kernel or by users (see the attr(5) manual page, or visit
- <http://acl.bestbits.at/> for details).
- If unsure, say N.
- config F2FS_FS_POSIX_ACL
- bool "F2FS Access Control Lists"
- depends on F2FS_FS_XATTR
- select FS_POSIX_ACL
- default y
- help
- Posix Access Control Lists (ACLs) support permissions for users and
- groups beyond the owner/group/world scheme.
- To learn more about Access Control Lists, visit the POSIX ACLs for
- Linux website <http://acl.bestbits.at/>.
- If you don't know what Access Control Lists are, say N
- config F2FS_FS_SECURITY
- bool "F2FS Security Labels"
- depends on F2FS_FS_XATTR
- help
- Security labels provide an access control facility to support Linux
- Security Models (LSMs) accepted by AppArmor, SELinux, Smack and TOMOYO
- Linux. This option enables an extended attribute handler for file
- security labels in the f2fs filesystem, so that it requires enabling
- the extended attribute support in advance.
- If you are not using a security module, say N.
- config F2FS_CHECK_FS
- bool "F2FS consistency checking feature"
- depends on F2FS_FS
- help
- Enables BUG_ONs which check the filesystem consistency in runtime.
- If you want to improve the performance, say N.
- config F2FS_FS_ENCRYPTION
- bool "F2FS Encryption"
- depends on F2FS_FS
- depends on F2FS_FS_XATTR
- select FS_ENCRYPTION
- help
- Enable encryption of f2fs files and directories. This
- feature is similar to ecryptfs, but it is more memory
- efficient since it avoids caching the encrypted and
- decrypted pages in the page cache.
- config F2FS_IO_TRACE
- bool "F2FS IO tracer"
- depends on F2FS_FS
- depends on FUNCTION_TRACER
- help
- F2FS IO trace is based on a function trace, which gathers process
- information and block IO patterns in the filesystem level.
- If unsure, say N.
- config F2FS_FAULT_INJECTION
- bool "F2FS fault injection facility"
- depends on F2FS_FS
- help
- Test F2FS to inject faults such as ENOMEM, ENOSPC, and so on.
- If unsure, say N.
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