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