Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | config XFS_FS |
2 | tristate "XFS filesystem support" | |
9361401e | 3 | depends on BLOCK |
d5cf09ba | 4 | depends on (64BIT || LBDAF) |
d296d30a | 5 | select EXPORTFS |
bc02e869 | 6 | select LIBCRC32C |
1da177e4 LT |
7 | help |
8 | XFS is a high performance journaling filesystem which originated | |
9 | on the SGI IRIX platform. It is completely multi-threaded, can | |
10 | support large files and large filesystems, extended attributes, | |
11 | variable block sizes, is extent based, and makes extensive use of | |
12 | Btrees (directories, extents, free space) to aid both performance | |
13 | and scalability. | |
14 | ||
15 | Refer to the documentation at <http://oss.sgi.com/projects/xfs/> | |
16 | for complete details. This implementation is on-disk compatible | |
17 | with the IRIX version of XFS. | |
18 | ||
19 | To compile this file system support as a module, choose M here: the | |
20 | module will be called xfs. Be aware, however, that if the file | |
21 | system of your root partition is compiled as a module, you'll need | |
22 | to use an initial ramdisk (initrd) to boot. | |
23 | ||
1da177e4 | 24 | config XFS_QUOTA |
538524ae | 25 | bool "XFS Quota support" |
1da177e4 | 26 | depends on XFS_FS |
80f44b15 | 27 | select QUOTACTL |
1da177e4 LT |
28 | help |
29 | If you say Y here, you will be able to set limits for disk usage on | |
30 | a per user and/or a per group basis under XFS. XFS considers quota | |
31 | information as filesystem metadata and uses journaling to provide a | |
32 | higher level guarantee of consistency. The on-disk data format for | |
33 | quota is also compatible with the IRIX version of XFS, allowing a | |
34 | filesystem to be migrated between Linux and IRIX without any need | |
35 | for conversion. | |
36 | ||
37 | If unsure, say N. More comprehensive documentation can be found in | |
38 | README.quota in the xfsprogs package. XFS quota can be used either | |
39 | with or without the generic quota support enabled (CONFIG_QUOTA) - | |
40 | they are completely independent subsystems. | |
41 | ||
1da177e4 | 42 | config XFS_POSIX_ACL |
20ba0287 | 43 | bool "XFS POSIX ACL support" |
1da177e4 | 44 | depends on XFS_FS |
ef14f0c1 | 45 | select FS_POSIX_ACL |
1da177e4 LT |
46 | help |
47 | POSIX Access Control Lists (ACLs) support permissions for users and | |
48 | groups beyond the owner/group/world scheme. | |
49 | ||
50 | To learn more about Access Control Lists, visit the POSIX ACLs for | |
51 | Linux website <http://acl.bestbits.at/>. | |
52 | ||
53 | If you don't know what Access Control Lists are, say N. | |
54 | ||
20ba0287 | 55 | config XFS_RT |
d7ede1aa NS |
56 | bool "XFS Realtime subvolume support" |
57 | depends on XFS_FS | |
20ba0287 NS |
58 | help |
59 | If you say Y here you will be able to mount and use XFS filesystems | |
d7ede1aa NS |
60 | which contain a realtime subvolume. The realtime subvolume is a |
61 | separate area of disk space where only file data is stored. It was | |
62 | originally designed to provide deterministic data rates suitable | |
63 | for media streaming applications, but is also useful as a generic | |
64 | mechanism for ensuring data and metadata/log I/Os are completely | |
65 | separated. Regular file I/Os are isolated to a separate device | |
66 | from all other requests, and this can be done quite transparently | |
67 | to applications via the inherit-realtime directory inode flag. | |
20ba0287 | 68 | |
d7ede1aa | 69 | See the xfs man page in section 5 for additional information. |
20ba0287 NS |
70 | |
71 | If unsure, say N. | |
7788fae6 | 72 | |
742ae1e3 DC |
73 | config XFS_WARN |
74 | bool "XFS Verbose Warnings" | |
75 | depends on XFS_FS && !XFS_DEBUG | |
76 | help | |
77 | Say Y here to get an XFS build with many additional warnings. | |
78 | It converts ASSERT checks to WARN, so will log any out-of-bounds | |
79 | conditions that occur that would otherwise be missed. It is much | |
80 | lighter weight than XFS_DEBUG and does not modify algorithms and will | |
81 | not cause the kernel to panic on non-fatal errors. | |
82 | ||
83 | However, similar to XFS_DEBUG, it is only advisable to use this if you | |
84 | are debugging a particular problem. | |
85 | ||
7788fae6 | 86 | config XFS_DEBUG |
d9777b8d KC |
87 | bool "XFS Debugging support" |
88 | depends on XFS_FS | |
7788fae6 CH |
89 | help |
90 | Say Y here to get an XFS build with many debugging features, | |
91 | including ASSERT checks, function wrappers around macros, | |
92 | and extra sanity-checking functions in various code paths. | |
93 | ||
94 | Note that the resulting code will be HUGE and SLOW, and probably | |
95 | not useful unless you are debugging a particular problem. | |
96 | ||
97 | Say N unless you are an XFS developer, or you play one on TV. |