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Linus Torvalds1da177e2005-04-16 15:20:36 -07001config 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
Nathan Scott20ba0282005-09-08 15:34:58 +100023 depends on XFS_FS && EXPORTFS
24 default y
Linus Torvalds1da177e2005-04-16 15:20:36 -070025
26config XFS_QUOTA
Nathan Scott538524a2005-11-03 13:55:06 +110027 bool "XFS Quota support"
Linus Torvalds1da177e2005-04-16 15:20:36 -070028 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
Nathan Scott20ba0282005-09-08 15:34:58 +100044 bool "XFS Security Label support"
Linus Torvalds1da177e2005-04-16 15:20:36 -070045 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
Nathan Scott20ba0282005-09-08 15:34:58 +100056 bool "XFS POSIX ACL support"
Linus Torvalds1da177e2005-04-16 15:20:36 -070057 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
Nathan Scott20ba0282005-09-08 15:34:58 +100067config XFS_RT
Nathan Scottd7ede1a2006-06-13 16:28:11 +100068 bool "XFS Realtime subvolume support"
69 depends on XFS_FS
Nathan Scott20ba0282005-09-08 15:34:58 +100070 help
71 If you say Y here you will be able to mount and use XFS filesystems
Nathan Scottd7ede1a2006-06-13 16:28:11 +100072 which contain a realtime subvolume. The realtime subvolume is a
73 separate area of disk space where only file data is stored. It was
74 originally designed to provide deterministic data rates suitable
75 for media streaming applications, but is also useful as a generic
76 mechanism for ensuring data and metadata/log I/Os are completely
77 separated. Regular file I/Os are isolated to a separate device
78 from all other requests, and this can be done quite transparently
79 to applications via the inherit-realtime directory inode flag.
Nathan Scott20ba0282005-09-08 15:34:58 +100080
Nathan Scottd7ede1a2006-06-13 16:28:11 +100081 See the xfs man page in section 5 for additional information.
Nathan Scott20ba0282005-09-08 15:34:58 +100082
83 If unsure, say N.