fs/xfs/Kconfig

   1 config XFS_FS
   2         tristate "XFS filesystem support"
   3         depends on BLOCK
   4         select EXPORTFS
   5         select LIBCRC32C
   6         help
   7           XFS is a high performance journaling filesystem which originated
   8           on the SGI IRIX platform.  It is completely multi-threaded, can
   9           support large files and large filesystems, extended attributes,
  10           variable block sizes, is extent based, and makes extensive use of
  11           Btrees (directories, extents, free space) to aid both performance
  12           and scalability.
  13
  14           Refer to the documentation at <http://oss.sgi.com/projects/xfs/>
  15           for complete details.  This implementation is on-disk compatible
  16           with the IRIX version of XFS.
  17
  18           To compile this file system support as a module, choose M here: the
  19           module will be called xfs.  Be aware, however, that if the file
  20           system of your root partition is compiled as a module, you'll need
  21           to use an initial ramdisk (initrd) to boot.
  22
  23 config XFS_QUOTA
  24         bool "XFS Quota support"
  25         depends on XFS_FS
  26         select QUOTACTL
  27         help
  28           If you say Y here, you will be able to set limits for disk usage on
  29           a per user and/or a per group basis under XFS.  XFS considers quota
  30           information as filesystem metadata and uses journaling to provide a
  31           higher level guarantee of consistency.  The on-disk data format for
  32           quota is also compatible with the IRIX version of XFS, allowing a
  33           filesystem to be migrated between Linux and IRIX without any need
  34           for conversion.
  35
  36           If unsure, say N.  More comprehensive documentation can be found in
  37           README.quota in the xfsprogs package.  XFS quota can be used either
  38           with or without the generic quota support enabled (CONFIG_QUOTA) -
  39           they are completely independent subsystems.
  40
  41 config XFS_POSIX_ACL
  42         bool "XFS POSIX ACL support"
  43         depends on XFS_FS
  44         select FS_POSIX_ACL
  45         help
  46           POSIX Access Control Lists (ACLs) support permissions for users and
  47           groups beyond the owner/group/world scheme.
  48
  49           To learn more about Access Control Lists, visit the POSIX ACLs for
  50           Linux website <http://acl.bestbits.at/>.
  51
  52           If you don't know what Access Control Lists are, say N.
  53
  54 config XFS_RT
  55         bool "XFS Realtime subvolume support"
  56         depends on XFS_FS
  57         help
  58           If you say Y here you will be able to mount and use XFS filesystems
  59           which contain a realtime subvolume.  The realtime subvolume is a
  60           separate area of disk space where only file data is stored.  It was
  61           originally designed to provide deterministic data rates suitable
  62           for media streaming applications, but is also useful as a generic
  63           mechanism for ensuring data and metadata/log I/Os are completely
  64           separated.  Regular file I/Os are isolated to a separate device
  65           from all other requests, and this can be done quite transparently
  66           to applications via the inherit-realtime directory inode flag.
  67
  68           See the xfs man page in section 5 for additional information.
  69
  70           If unsure, say N.
  71
  72 config XFS_WARN
  73         bool "XFS Verbose Warnings"
  74         depends on XFS_FS && !XFS_DEBUG
  75         help
  76           Say Y here to get an XFS build with many additional warnings.
  77           It converts ASSERT checks to WARN, so will log any out-of-bounds
  78           conditions that occur that would otherwise be missed. It is much
  79           lighter weight than XFS_DEBUG and does not modify algorithms and will
  80           not cause the kernel to panic on non-fatal errors.
  81
  82           However, similar to XFS_DEBUG, it is only advisable to use this if you
  83           are debugging a particular problem.
  84
  85 config XFS_DEBUG
  86         bool "XFS Debugging support"
  87         depends on XFS_FS
  88         help
  89           Say Y here to get an XFS build with many debugging features,
  90           including ASSERT checks, function wrappers around macros,
  91           and extra sanity-checking functions in various code paths.
  92
  93           Note that the resulting code will be HUGE and SLOW, and probably
  94           not useful unless you are debugging a particular problem.
  95
  96           Say N unless you are an XFS developer, or you play one on TV.