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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
Christoph Hellwigd296d302009-01-19 02:02:57 +01004 select EXPORTFS
Christoph Hellwigbc02e862012-11-16 09:20:37 +11005 select LIBCRC32C
Linus Torvalds1da177e2005-04-16 15:20:36 -07006 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070023config XFS_QUOTA
Nathan Scott538524a2005-11-03 13:55:06 +110024 bool "XFS Quota support"
Linus Torvalds1da177e2005-04-16 15:20:36 -070025 depends on XFS_FS
Jan Kara80f44b12010-08-17 12:14:44 +020026 select QUOTACTL
Linus Torvalds1da177e2005-04-16 15:20:36 -070027 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
Linus Torvalds1da177e2005-04-16 15:20:36 -070041config XFS_POSIX_ACL
Nathan Scott20ba0282005-09-08 15:34:58 +100042 bool "XFS POSIX ACL support"
Linus Torvalds1da177e2005-04-16 15:20:36 -070043 depends on XFS_FS
Christoph Hellwigef14f0c2009-06-10 17:07:47 +020044 select FS_POSIX_ACL
Linus Torvalds1da177e2005-04-16 15:20:36 -070045 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
Nathan Scott20ba0282005-09-08 15:34:58 +100054config XFS_RT
Nathan Scottd7ede1a2006-06-13 16:28:11 +100055 bool "XFS Realtime subvolume support"
56 depends on XFS_FS
Nathan Scott20ba0282005-09-08 15:34:58 +100057 help
58 If you say Y here you will be able to mount and use XFS filesystems
Nathan Scottd7ede1a2006-06-13 16:28:11 +100059 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.
Nathan Scott20ba0282005-09-08 15:34:58 +100067
Nathan Scottd7ede1a2006-06-13 16:28:11 +100068 See the xfs man page in section 5 for additional information.
Nathan Scott20ba0282005-09-08 15:34:58 +100069
70 If unsure, say N.
Christoph Hellwig7788fae2008-04-21 17:22:27 +100071
72config XFS_DEBUG
Kees Cookd9777b82012-10-02 11:19:27 -070073 bool "XFS Debugging support"
74 depends on XFS_FS
Christoph Hellwig7788fae2008-04-21 17:22:27 +100075 help
76 Say Y here to get an XFS build with many debugging features,
77 including ASSERT checks, function wrappers around macros,
78 and extra sanity-checking functions in various code paths.
79
80 Note that the resulting code will be HUGE and SLOW, and probably
81 not useful unless you are debugging a particular problem.
82
83 Say N unless you are an XFS developer, or you play one on TV.