LXR linux/fs/f2fs/Kconfig

   1config 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
  19config 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
  32config 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
  43config 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
  57config 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
  69config 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
  77config 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
  88config 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
  98config 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.
 105