fs/f2fs/Kconfig

   1 config F2FS_FS
   2         tristate "F2FS filesystem support"
   3         depends on BLOCK
   4         select CRYPTO
   5         select CRYPTO_CRC32
   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:
  28             - major filesystem information managed by f2fs currently
  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
  50           groups beyond the owner/group/world scheme.
  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
  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.
  68
  69 config F2FS_CHECK_FS
  70         bool "F2FS consistency checking feature"
  71         depends on F2FS_FS
  72         help
  73           Enables BUG_ONs which check the filesystem consistency in runtime.
  74
  75           If you want to improve the performance, say N.
  76
  77 config F2FS_FS_ENCRYPTION
  78         bool "F2FS Encryption"
  79         depends on F2FS_FS
  80         depends on F2FS_FS_XATTR
  81         select FS_ENCRYPTION
  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
  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.
  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.