2 tristate "XFS filesystem support"
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
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.
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.
24 bool "XFS Quota support"
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
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.
42 bool "XFS POSIX ACL support"
46 POSIX Access Control Lists (ACLs) support permissions for users and
47 groups beyond the owner/group/world scheme.
49 To learn more about Access Control Lists, visit the POSIX ACLs for
50 Linux website <http://acl.bestbits.at/>.
52 If you don't know what Access Control Lists are, say N.
55 bool "XFS Realtime subvolume support"
58 If you say Y here you will be able to mount and use XFS filesystems
59 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.
68 See the xfs man page in section 5 for additional information.
73 bool "XFS Verbose Warnings"
74 depends on XFS_FS && !XFS_DEBUG
76 Say Y here to get an XFS build with many additional warnings.
77 It converts ASSERT checks to WARN, so will log any out-of-bounds
78 conditions that occur that would otherwise be missed. It is much
79 lighter weight than XFS_DEBUG and does not modify algorithms and will
80 not cause the kernel to panic on non-fatal errors.
82 However, similar to XFS_DEBUG, it is only advisable to use this if you
83 are debugging a particular problem.
86 bool "XFS Debugging support"
89 Say Y here to get an XFS build with many debugging features,
90 including ASSERT checks, function wrappers around macros,
91 and extra sanity-checking functions in various code paths.
93 Note that the resulting code will be HUGE and SLOW, and probably
94 not useful unless you are debugging a particular problem.
96 Say N unless you are an XFS developer, or you play one on TV.