projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| a14d5393 | 1 | config F2FS_FS |
| d7196c5a | 2 | tristate "F2FS filesystem support" |
| 573ea5fc | 3 | depends on BLOCK |
| 43b6573b KM |
4 | select CRYPTO |
| 5 | select CRYPTO_CRC32 | |
| a14d5393 JK |
6 | help |
| 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. | |
| 11 | ||
| 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. | |
| 16 | ||
| 17 | If unsure, say N. | |
| 18 | ||
| 19 | config F2FS_STAT_FS | |
| 20 | bool "F2FS Status Information" | |
| 21 | depends on F2FS_FS && DEBUG_FS | |
| 22 | default y | |
| 23 | help | |
| 24 | /sys/kernel/debug/f2fs/ contains information about all the partitions | |
| 25 | mounted as f2fs. Each file shows the whole f2fs information. | |
| 26 | ||
| 27 | /sys/kernel/debug/f2fs/status includes: | |
| e1c42045 | 28 | - major filesystem information managed by f2fs currently |
| a14d5393 JK |
29 | - average SIT information about whole segments |
| 30 | - current memory footprint consumed by f2fs. | |
| 31 | ||
| 32 | config F2FS_FS_XATTR | |
| 33 | bool "F2FS extended attributes" | |
| 34 | depends on F2FS_FS | |
| 35 | default y | |
| 36 | help | |
| 37 | Extended attributes are name:value pairs associated with inodes by | |
| 38 | the kernel or by users (see the attr(5) manual page, or visit | |
| 39 | <http://acl.bestbits.at/> for details). | |
| 40 | ||
| 41 | If unsure, say N. | |
| 42 | ||
| 43 | config F2FS_FS_POSIX_ACL | |
| 44 | bool "F2FS Access Control Lists" | |
| 45 | depends on F2FS_FS_XATTR | |
| 46 | select FS_POSIX_ACL | |
| 47 | default y | |
| 48 | help | |
| 49 | Posix Access Control Lists (ACLs) support permissions for users and | |
| 217940d4 | 50 | groups beyond the owner/group/world scheme. |
| a14d5393 JK |
51 | |
| 52 | To learn more about Access Control Lists, visit the POSIX ACLs for | |
| 53 | Linux website <http://acl.bestbits.at/>. | |
| 54 | ||
| 55 | If you don't know what Access Control Lists are, say N | |
| 8ae8f162 JK |
56 | |
| 57 | config F2FS_FS_SECURITY | |
| 58 | bool "F2FS Security Labels" | |
| 59 | depends on F2FS_FS_XATTR | |
| 60 | help | |
| 61 | Security labels provide an access control facility to support Linux | |
| 62 | Security Models (LSMs) accepted by AppArmor, SELinux, Smack and TOMOYO | |
| 63 | Linux. This option enables an extended attribute handler for file | |
| 64 | security labels in the f2fs filesystem, so that it requires enabling | |
| 65 | the extended attribute support in advance. | |
| 66 | ||
| 67 | If you are not using a security module, say N. | |
| 3b218e3a JK |
68 | |
| 69 | config F2FS_CHECK_FS | |
| 70 | bool "F2FS consistency checking feature" | |
| 71 | depends on F2FS_FS | |
| 72 | help | |
| e1c42045 | 73 | Enables BUG_ONs which check the filesystem consistency in runtime. |
| 3b218e3a JK |
74 | |
| 75 | If you want to improve the performance, say N. | |
| 63f92ddc | 76 | |
| d33793fb JK |
77 | config F2FS_FS_ENCRYPTION |
| 78 | bool "F2FS Encryption" | |
| 79 | depends on F2FS_FS | |
| 80 | depends on F2FS_FS_XATTR | |
| 0b81d077 | 81 | select FS_ENCRYPTION |
| d33793fb JK |
82 | help |
| 83 | Enable encryption of f2fs files and directories. This | |
| 84 | feature is similar to ecryptfs, but it is more memory | |
| 85 | efficient since it avoids caching the encrypted and | |
| 86 | decrypted pages in the page cache. | |
| 87 | ||
| 63f92ddc JK |
88 | config F2FS_IO_TRACE |
| 89 | bool "F2FS IO tracer" | |
| 90 | depends on F2FS_FS | |
| 91 | depends on FUNCTION_TRACER | |
| 92 | help | |
| 93 | F2FS IO trace is based on a function trace, which gathers process | |
| 94 | information and block IO patterns in the filesystem level. | |
| 95 | ||
| 96 | If unsure, say N. | |
| 73faec4d JK |
97 | |
| 98 | config F2FS_FAULT_INJECTION | |
| 99 | bool "F2FS fault injection facility" | |
| 100 | depends on F2FS_FS | |
| 101 | help | |
| 102 | Test F2FS to inject faults such as ENOMEM, ENOSPC, and so on. | |
| 103 | ||
| 104 | If unsure, say N. |