1config XFS_FS
   2        tristate "XFS filesystem support"
   3        depends on BLOCK
   4        select EXPORTFS
   5        help
   6          XFS is a high performance journaling filesystem which originated
   7          on the SGI IRIX platform.  It is completely multi-threaded, can
   8          support large files and large filesystems, extended attributes,
   9          variable block sizes, is extent based, and makes extensive use of
  10          Btrees (directories, extents, free space) to aid both performance
  11          and scalability.
  13          Refer to the documentation at <>
  14          for complete details.  This implementation is on-disk compatible
  15          with the IRIX version of XFS.
  17          To compile this file system support as a module, choose M here: the
  18          module will be called xfs.  Be aware, however, that if the file
  19          system of your root partition is compiled as a module, you'll need
  20          to use an initial ramdisk (initrd) to boot.
  22config XFS_QUOTA
  23        bool "XFS Quota support"
  24        depends on XFS_FS
  25        select QUOTACTL
  26        help
  27          If you say Y here, you will be able to set limits for disk usage on
  28          a per user and/or a per group basis under XFS.  XFS considers quota
  29          information as filesystem metadata and uses journaling to provide a
  30          higher level guarantee of consistency.  The on-disk data format for
  31          quota is also compatible with the IRIX version of XFS, allowing a
  32          filesystem to be migrated between Linux and IRIX without any need
  33          for conversion.
  35          If unsure, say N.  More comprehensive documentation can be found in
  36          README.quota in the xfsprogs package.  XFS quota can be used either
  37          with or without the generic quota support enabled (CONFIG_QUOTA) -
  38          they are completely independent subsystems.
  40config XFS_POSIX_ACL
  41        bool "XFS POSIX ACL support"
  42        depends on XFS_FS
  43        select FS_POSIX_ACL
  44        help
  45          POSIX Access Control Lists (ACLs) support permissions for users and
  46          groups beyond the owner/group/world scheme.
  48          To learn more about Access Control Lists, visit the POSIX ACLs for
  49          Linux website <>.
  51          If you don't know what Access Control Lists are, say N.
  53config XFS_RT
  54        bool "XFS Realtime subvolume support"
  55        depends on XFS_FS
  56        help
  57          If you say Y here you will be able to mount and use XFS filesystems
  58          which contain a realtime subvolume.  The realtime subvolume is a
  59          separate area of disk space where only file data is stored.  It was
  60          originally designed to provide deterministic data rates suitable
  61          for media streaming applications, but is also useful as a generic
  62          mechanism for ensuring data and metadata/log I/Os are completely
  63          separated.  Regular file I/Os are isolated to a separate device
  64          from all other requests, and this can be done quite transparently
  65          to applications via the inherit-realtime directory inode flag.
  67          See the xfs man page in section 5 for additional information.
  69          If unsure, say N.
  71config XFS_DEBUG
  72        bool "XFS Debugging support (EXPERIMENTAL)"
  73        depends on XFS_FS && EXPERIMENTAL
  74        help
  75          Say Y here to get an XFS build with many debugging features,
  76          including ASSERT checks, function wrappers around macros,
  77          and extra sanity-checking functions in various code paths.
  79          Note that the resulting code will be HUGE and SLOW, and probably
  80          not useful unless you are debugging a particular problem.
  82          Say N unless you are an XFS developer, or you play one on TV.
  83 kindly hosted by Redpill Linpro AS, provider of Linux consulting and operations services since 1995.