| config F2FS_FS |
| tristate "F2FS filesystem support" |
| depends on BLOCK |
| 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 CRYPTO_AES |
| select CRYPTO_CBC |
| select CRYPTO_ECB |
| select CRYPTO_XTS |
| select CRYPTO_CTS |
| select CRYPTO_CTR |
| select CRYPTO_SHA256 |
| select KEYS |
| select ENCRYPTED_KEYS |
| 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. |