fs/f2fs/Kconfig

   1 # SPDX-License-Identifier: GPL-2.0-only
   2 config F2FS_FS
   3         tristate "F2FS filesystem support"
   4         depends on BLOCK
   5         select NLS
   6         select CRYPTO
   7         select CRYPTO_CRC32
   8         select F2FS_FS_XATTR if FS_ENCRYPTION
   9         select FS_ENCRYPTION_ALGS if FS_ENCRYPTION
  10         help
  11           F2FS is based on Log-structured File System (LFS), which supports
  12           versatile "flash-friendly" features. The design has been focused on
  13           addressing the fundamental issues in LFS, which are snowball effect
  14           of wandering tree and high cleaning overhead.
  15
  16           Since flash-based storages show different characteristics according to
  17           the internal geometry or flash memory management schemes aka FTL, F2FS
  18           and tools support various parameters not only for configuring on-disk
  19           layout, but also for selecting allocation and cleaning algorithms.
  20
  21           If unsure, say N.
  22
  23 config F2FS_STAT_FS
  24         bool "F2FS Status Information"
  25         depends on F2FS_FS
  26         default y
  27         help
  28           /sys/kernel/debug/f2fs/ contains information about all the partitions
  29           mounted as f2fs. Each file shows the whole f2fs information.
  30
  31           /sys/kernel/debug/f2fs/status includes:
  32             - major filesystem information managed by f2fs currently
  33             - average SIT information about whole segments
  34             - current memory footprint consumed by f2fs.
  35
  36 config F2FS_FS_XATTR
  37         bool "F2FS extended attributes"
  38         depends on F2FS_FS
  39         default y
  40         help
  41           Extended attributes are name:value pairs associated with inodes by
  42           the kernel or by users (see the attr(5) manual page for details).
  43
  44           If unsure, say N.
  45
  46 config F2FS_FS_POSIX_ACL
  47         bool "F2FS Access Control Lists"
  48         depends on F2FS_FS_XATTR
  49         select FS_POSIX_ACL
  50         default y
  51         help
  52           Posix Access Control Lists (ACLs) support permissions for users and
  53           groups beyond the owner/group/world scheme.
  54
  55           If you don't know what Access Control Lists are, say N
  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. In particular you need this
  66           option if you use the setcap command to assign initial process capabi-
  67           lities to executables (the security.* extended attributes).
  68
  69           If you are not using a security module, say N.
  70
  71 config F2FS_CHECK_FS
  72         bool "F2FS consistency checking feature"
  73         depends on F2FS_FS
  74         help
  75           Enables BUG_ONs which check the filesystem consistency in runtime.
  76
  77           If you want to improve the performance, say N.
  78
  79 config F2FS_IO_TRACE
  80         bool "F2FS IO tracer"
  81         depends on F2FS_FS
  82         depends on FUNCTION_TRACER
  83         help
  84           F2FS IO trace is based on a function trace, which gathers process
  85           information and block IO patterns in the filesystem level.
  86
  87           If unsure, say N.
  88
  89 config F2FS_FAULT_INJECTION
  90         bool "F2FS fault injection facility"
  91         depends on F2FS_FS
  92         help
  93           Test F2FS to inject faults such as ENOMEM, ENOSPC, and so on.
  94
  95           If unsure, say N.
  96
  97 config F2FS_FS_COMPRESSION
  98         bool "F2FS compression feature"
  99         depends on F2FS_FS
 100         help
 101           Enable filesystem-level compression on f2fs regular files,
 102           multiple back-end compression algorithms are supported.
 103
 104 config F2FS_FS_LZO
 105         bool "LZO compression support"
 106         depends on F2FS_FS_COMPRESSION
 107         select LZO_COMPRESS
 108         select LZO_DECOMPRESS
 109         default y
 110         help
 111           Support LZO compress algorithm, if unsure, say Y.
 112
 113 config F2FS_FS_LZ4
 114         bool "LZ4 compression support"
 115         depends on F2FS_FS_COMPRESSION
 116         select LZ4_COMPRESS
 117         select LZ4_DECOMPRESS
 118         default y
 119         help
 120           Support LZ4 compress algorithm, if unsure, say Y.
 121
 122 config F2FS_FS_ZSTD
 123         bool "ZSTD compression support"
 124         depends on F2FS_FS_COMPRESSION
 125         select ZSTD_COMPRESS
 126         select ZSTD_DECOMPRESS
 127         default y
 128         help
 129           Support ZSTD compress algorithm, if unsure, say Y.
 130
 131 config F2FS_FS_LZORLE
 132         bool "LZO-RLE compression support"
 133         depends on F2FS_FS_COMPRESSION
 134         depends on F2FS_FS_LZO
 135         select LZO_COMPRESS
 136         select LZO_DECOMPRESS
 137         default y
 138         help
 139           Support LZO-RLE compress algorithm, if unsure, say Y.