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Linus Torvalds1da177e2005-04-16 15:20:36 -07001config XFS_FS
2 tristate "XFS filesystem support"
David Howells93614012006-09-30 20:45:40 +02003 depends on BLOCK
Linus Torvalds1da177e2005-04-16 15:20:36 -07004 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070021config XFS_QUOTA
Nathan Scott538524a2005-11-03 13:55:06 +110022 bool "XFS Quota support"
Linus Torvalds1da177e2005-04-16 15:20:36 -070023 depends on XFS_FS
24 help
25 If you say Y here, you will be able to set limits for disk usage on
26 a per user and/or a per group basis under XFS. XFS considers quota
27 information as filesystem metadata and uses journaling to provide a
28 higher level guarantee of consistency. The on-disk data format for
29 quota is also compatible with the IRIX version of XFS, allowing a
30 filesystem to be migrated between Linux and IRIX without any need
31 for conversion.
32
33 If unsure, say N. More comprehensive documentation can be found in
34 README.quota in the xfsprogs package. XFS quota can be used either
35 with or without the generic quota support enabled (CONFIG_QUOTA) -
36 they are completely independent subsystems.
37
Linus Torvalds1da177e2005-04-16 15:20:36 -070038config XFS_POSIX_ACL
Nathan Scott20ba0282005-09-08 15:34:58 +100039 bool "XFS POSIX ACL support"
Linus Torvalds1da177e2005-04-16 15:20:36 -070040 depends on XFS_FS
41 help
42 POSIX Access Control Lists (ACLs) support permissions for users and
43 groups beyond the owner/group/world scheme.
44
45 To learn more about Access Control Lists, visit the POSIX ACLs for
46 Linux website <http://acl.bestbits.at/>.
47
48 If you don't know what Access Control Lists are, say N.
49
Nathan Scott20ba0282005-09-08 15:34:58 +100050config XFS_RT
Nathan Scottd7ede1a2006-06-13 16:28:11 +100051 bool "XFS Realtime subvolume support"
52 depends on XFS_FS
Nathan Scott20ba0282005-09-08 15:34:58 +100053 help
54 If you say Y here you will be able to mount and use XFS filesystems
Nathan Scottd7ede1a2006-06-13 16:28:11 +100055 which contain a realtime subvolume. The realtime subvolume is a
56 separate area of disk space where only file data is stored. It was
57 originally designed to provide deterministic data rates suitable
58 for media streaming applications, but is also useful as a generic
59 mechanism for ensuring data and metadata/log I/Os are completely
60 separated. Regular file I/Os are isolated to a separate device
61 from all other requests, and this can be done quite transparently
62 to applications via the inherit-realtime directory inode flag.
Nathan Scott20ba0282005-09-08 15:34:58 +100063
Nathan Scottd7ede1a2006-06-13 16:28:11 +100064 See the xfs man page in section 5 for additional information.
Nathan Scott20ba0282005-09-08 15:34:58 +100065
66 If unsure, say N.