xref: /openbmc/linux/fs/xfs/Kconfig (revision d5cb9783536a41df9f9cba5b0a1d78047ed787f7)
1config XFS_FS
2	tristate "XFS filesystem support"
3	select EXPORTFS if NFSD!=n
4	help
5	  XFS is a high performance journaling filesystem which originated
6	  on the SGI IRIX platform.  It is completely multi-threaded, can
7	  support large files and large filesystems, extended attributes,
8	  variable block sizes, is extent based, and makes extensive use of
9	  Btrees (directories, extents, free space) to aid both performance
10	  and scalability.
11
12	  Refer to the documentation at <http://oss.sgi.com/projects/xfs/>
13	  for complete details.  This implementation is on-disk compatible
14	  with the IRIX version of XFS.
15
16	  To compile this file system support as a module, choose M here: the
17	  module will be called xfs.  Be aware, however, that if the file
18	  system of your root partition is compiled as a module, you'll need
19	  to use an initial ramdisk (initrd) to boot.
20
21config XFS_EXPORT
22	bool
23	depends on XFS_FS && EXPORTFS
24	default y
25
26config XFS_QUOTA
27	bool "XFS Quota support"
28	depends on XFS_FS
29	help
30	  If you say Y here, you will be able to set limits for disk usage on
31	  a per user and/or a per group basis under XFS.  XFS considers quota
32	  information as filesystem metadata and uses journaling to provide a
33	  higher level guarantee of consistency.  The on-disk data format for
34	  quota is also compatible with the IRIX version of XFS, allowing a
35	  filesystem to be migrated between Linux and IRIX without any need
36	  for conversion.
37
38	  If unsure, say N.  More comprehensive documentation can be found in
39	  README.quota in the xfsprogs package.  XFS quota can be used either
40	  with or without the generic quota support enabled (CONFIG_QUOTA) -
41	  they are completely independent subsystems.
42
43config XFS_SECURITY
44	bool "XFS Security Label support"
45	depends on XFS_FS
46	help
47	  Security labels support alternative access control models
48	  implemented by security modules like SELinux.  This option
49	  enables an extended attribute namespace for inode security
50	  labels in the XFS filesystem.
51
52	  If you are not using a security module that requires using
53	  extended attributes for inode security labels, say N.
54
55config XFS_POSIX_ACL
56	bool "XFS POSIX ACL support"
57	depends on XFS_FS
58	help
59	  POSIX Access Control Lists (ACLs) support permissions for users and
60	  groups beyond the owner/group/world scheme.
61
62	  To learn more about Access Control Lists, visit the POSIX ACLs for
63	  Linux website <http://acl.bestbits.at/>.
64
65	  If you don't know what Access Control Lists are, say N.
66
67config XFS_RT
68	bool "XFS Realtime support (EXPERIMENTAL)"
69	depends on XFS_FS && EXPERIMENTAL
70	help
71	  If you say Y here you will be able to mount and use XFS filesystems
72	  which contain a realtime subvolume. The realtime subvolume is a
73	  separate area of disk space where only file data is stored. The
74	  realtime subvolume is designed to provide very deterministic
75	  data rates suitable for media streaming applications.
76
77	  See the xfs man page in section 5 for a bit more information.
78
79	  This feature is unsupported at this time, is not yet fully
80	  functional, and may cause serious problems.
81
82	  If unsure, say N.
83