Root/fs/xfs/Kconfig

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.
12
13      Refer to the documentation at <http://oss.sgi.com/projects/xfs/>
14      for complete details. This implementation is on-disk compatible
15      with the IRIX version of XFS.
16
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.
21
22config XFS_QUOTA
23    bool "XFS Quota support"
24    depends on XFS_FS
25    help
26      If you say Y here, you will be able to set limits for disk usage on
27      a per user and/or a per group basis under XFS. XFS considers quota
28      information as filesystem metadata and uses journaling to provide a
29      higher level guarantee of consistency. The on-disk data format for
30      quota is also compatible with the IRIX version of XFS, allowing a
31      filesystem to be migrated between Linux and IRIX without any need
32      for conversion.
33
34      If unsure, say N. More comprehensive documentation can be found in
35      README.quota in the xfsprogs package. XFS quota can be used either
36      with or without the generic quota support enabled (CONFIG_QUOTA) -
37      they are completely independent subsystems.
38
39config XFS_POSIX_ACL
40    bool "XFS POSIX ACL support"
41    depends on XFS_FS
42    select FS_POSIX_ACL
43    help
44      POSIX Access Control Lists (ACLs) support permissions for users and
45      groups beyond the owner/group/world scheme.
46
47      To learn more about Access Control Lists, visit the POSIX ACLs for
48      Linux website <http://acl.bestbits.at/>.
49
50      If you don't know what Access Control Lists are, say N.
51
52config XFS_RT
53    bool "XFS Realtime subvolume support"
54    depends on XFS_FS
55    help
56      If you say Y here you will be able to mount and use XFS filesystems
57      which contain a realtime subvolume. The realtime subvolume is a
58      separate area of disk space where only file data is stored. It was
59      originally designed to provide deterministic data rates suitable
60      for media streaming applications, but is also useful as a generic
61      mechanism for ensuring data and metadata/log I/Os are completely
62      separated. Regular file I/Os are isolated to a separate device
63      from all other requests, and this can be done quite transparently
64      to applications via the inherit-realtime directory inode flag.
65
66      See the xfs man page in section 5 for additional information.
67
68      If unsure, say N.
69
70config XFS_DEBUG
71    bool "XFS Debugging support (EXPERIMENTAL)"
72    depends on XFS_FS && EXPERIMENTAL
73    help
74      Say Y here to get an XFS build with many debugging features,
75      including ASSERT checks, function wrappers around macros,
76      and extra sanity-checking functions in various code paths.
77
78      Note that the resulting code will be HUGE and SLOW, and probably
79      not useful unless you are debugging a particular problem.
80
81      Say N unless you are an XFS developer, or you play one on TV.
82

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