projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| ec8f24b7 | 1 | # SPDX-License-Identifier: GPL-2.0-only |
| a14d5393 | 2 | config F2FS_FS |
| d7196c5a | 3 | tristate "F2FS filesystem support" |
| 573ea5fc | 4 | depends on BLOCK |
| aabc172b | 5 | select NLS |
| 43b6573b KM |
6 | select CRYPTO |
| 7 | select CRYPTO_CRC32 | |
| 643fa961 | 8 | select F2FS_FS_XATTR if FS_ENCRYPTION |
| a14d5393 JK |
9 | help |
| 10 | F2FS is based on Log-structured File System (LFS), which supports | |
| 11 | versatile "flash-friendly" features. The design has been focused on | |
| 12 | addressing the fundamental issues in LFS, which are snowball effect | |
| 13 | of wandering tree and high cleaning overhead. | |
| 14 | ||
| 15 | Since flash-based storages show different characteristics according to | |
| 16 | the internal geometry or flash memory management schemes aka FTL, F2FS | |
| 17 | and tools support various parameters not only for configuring on-disk | |
| 18 | layout, but also for selecting allocation and cleaning algorithms. | |
| 19 | ||
| 20 | If unsure, say N. | |
| 21 | ||
| 22 | config F2FS_STAT_FS | |
| 23 | bool "F2FS Status Information" | |
| 24 | depends on F2FS_FS && DEBUG_FS | |
| 25 | default y | |
| 26 | help | |
| 27 | /sys/kernel/debug/f2fs/ contains information about all the partitions | |
| 28 | mounted as f2fs. Each file shows the whole f2fs information. | |
| 29 | ||
| 30 | /sys/kernel/debug/f2fs/status includes: | |
| e1c42045 | 31 | - major filesystem information managed by f2fs currently |
| a14d5393 JK |
32 | - average SIT information about whole segments |
| 33 | - current memory footprint consumed by f2fs. | |
| 34 | ||
| 35 | config F2FS_FS_XATTR | |
| 36 | bool "F2FS extended attributes" | |
| 37 | depends on F2FS_FS | |
| 38 | default y | |
| 39 | help | |
| 40 | Extended attributes are name:value pairs associated with inodes by | |
| 91581e4c | 41 | the kernel or by users (see the attr(5) manual page for details). |
| a14d5393 JK |
42 | |
| 43 | If unsure, say N. | |
| 44 | ||
| 45 | config F2FS_FS_POSIX_ACL | |
| 46 | bool "F2FS Access Control Lists" | |
| 47 | depends on F2FS_FS_XATTR | |
| 48 | select FS_POSIX_ACL | |
| 49 | default y | |
| 50 | help | |
| 51 | Posix Access Control Lists (ACLs) support permissions for users and | |
| 217940d4 | 52 | groups beyond the owner/group/world scheme. |
| a14d5393 | 53 | |
| a14d5393 | 54 | If you don't know what Access Control Lists are, say N |
| 8ae8f162 JK |
55 | |
| 56 | config F2FS_FS_SECURITY | |
| 57 | bool "F2FS Security Labels" | |
| 58 | depends on F2FS_FS_XATTR | |
| 59 | help | |
| 60 | Security labels provide an access control facility to support Linux | |
| 61 | Security Models (LSMs) accepted by AppArmor, SELinux, Smack and TOMOYO | |
| 62 | Linux. This option enables an extended attribute handler for file | |
| 63 | security labels in the f2fs filesystem, so that it requires enabling | |
| bd7253bc L |
64 | the extended attribute support in advance. In particular you need this |
| 65 | option if you use the setcap command to assign initial process capabi- | |
| 66 | lities to executables (the security.* extended attributes). | |
| 8ae8f162 JK |
67 | |
| 68 | If you are not using a security module, say N. | |
| 3b218e3a JK |
69 | |
| 70 | config F2FS_CHECK_FS | |
| 71 | bool "F2FS consistency checking feature" | |
| 72 | depends on F2FS_FS | |
| 73 | help | |
| e1c42045 | 74 | Enables BUG_ONs which check the filesystem consistency in runtime. |
| 3b218e3a JK |
75 | |
| 76 | If you want to improve the performance, say N. | |
| 63f92ddc JK |
77 | |
| 78 | config F2FS_IO_TRACE | |
| 79 | bool "F2FS IO tracer" | |
| 80 | depends on F2FS_FS | |
| 81 | depends on FUNCTION_TRACER | |
| 82 | help | |
| 83 | F2FS IO trace is based on a function trace, which gathers process | |
| 84 | information and block IO patterns in the filesystem level. | |
| 85 | ||
| 86 | If unsure, say N. | |
| 73faec4d JK |
87 | |
| 88 | config F2FS_FAULT_INJECTION | |
| 89 | bool "F2FS fault injection facility" | |
| 90 | depends on F2FS_FS | |
| 91 | help | |
| 92 | Test F2FS to inject faults such as ENOMEM, ENOSPC, and so on. | |
| 93 | ||
| 94 | If unsure, say N. |