fs/f2fs/Kconfig

   1 config F2FS_FS
   2         tristate "F2FS filesystem support"
   3         depends on BLOCK
   4         help
   5           F2FS is based on Log-structured File System (LFS), which supports
   6           versatile "flash-friendly" features. The design has been focused on
   7           addressing the fundamental issues in LFS, which are snowball effect
   8           of wandering tree and high cleaning overhead.
   9
  10           Since flash-based storages show different characteristics according to
  11           the internal geometry or flash memory management schemes aka FTL, F2FS
  12           and tools support various parameters not only for configuring on-disk
  13           layout, but also for selecting allocation and cleaning algorithms.
  14
  15           If unsure, say N.
  16
  17 config F2FS_STAT_FS
  18         bool "F2FS Status Information"
  19         depends on F2FS_FS && DEBUG_FS
  20         default y
  21         help
  22           /sys/kernel/debug/f2fs/ contains information about all the partitions
  23           mounted as f2fs. Each file shows the whole f2fs information.
  24
  25           /sys/kernel/debug/f2fs/status includes:
  26             - major filesystem information managed by f2fs currently
  27             - average SIT information about whole segments
  28             - current memory footprint consumed by f2fs.
  29
  30 config F2FS_FS_XATTR
  31         bool "F2FS extended attributes"
  32         depends on F2FS_FS
  33         default y
  34         help
  35           Extended attributes are name:value pairs associated with inodes by
  36           the kernel or by users (see the attr(5) manual page, or visit
  37           <http://acl.bestbits.at/> for details).
  38
  39           If unsure, say N.
  40
  41 config F2FS_FS_POSIX_ACL
  42         bool "F2FS Access Control Lists"
  43         depends on F2FS_FS_XATTR
  44         select FS_POSIX_ACL
  45         default y
  46         help
  47           Posix Access Control Lists (ACLs) support permissions for users and
  48           groups beyond the owner/group/world scheme.
  49
  50           To learn more about Access Control Lists, visit the POSIX ACLs for
  51           Linux website <http://acl.bestbits.at/>.
  52
  53           If you don't know what Access Control Lists are, say N
  54
  55 config F2FS_FS_SECURITY
  56         bool "F2FS Security Labels"
  57         depends on F2FS_FS_XATTR
  58         help
  59           Security labels provide an access control facility to support Linux
  60           Security Models (LSMs) accepted by AppArmor, SELinux, Smack and TOMOYO
  61           Linux. This option enables an extended attribute handler for file
  62           security labels in the f2fs filesystem, so that it requires enabling
  63           the extended attribute support in advance.
  64
  65           If you are not using a security module, say N.
  66
  67 config F2FS_CHECK_FS
  68         bool "F2FS consistency checking feature"
  69         depends on F2FS_FS
  70         help
  71           Enables BUG_ONs which check the filesystem consistency in runtime.
  72
  73           If you want to improve the performance, say N.
  74
  75 config F2FS_FS_ENCRYPTION
  76         bool "F2FS Encryption"
  77         depends on F2FS_FS
  78         depends on F2FS_FS_XATTR
  79         select CRYPTO_AES
  80         select CRYPTO_CBC
  81         select CRYPTO_ECB
  82         select CRYPTO_XTS
  83         select CRYPTO_CTS
  84         select CRYPTO_CTR
  85         select CRYPTO_SHA256
  86         select KEYS
  87         select ENCRYPTED_KEYS
  88         help
  89           Enable encryption of f2fs files and directories.  This
  90           feature is similar to ecryptfs, but it is more memory
  91           efficient since it avoids caching the encrypted and
  92           decrypted pages in the page cache.
  93
  94 config F2FS_IO_TRACE
  95         bool "F2FS IO tracer"
  96         depends on F2FS_FS
  97         depends on FUNCTION_TRACER
  98         help
  99           F2FS IO trace is based on a function trace, which gathers process
 100           information and block IO patterns in the filesystem level.
 101
 102           If unsure, say N.