1config XFS_FS 2 tristate "XFS filesystem support" 3 depends on BLOCK 4 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 21config XFS_QUOTA 22 bool "XFS Quota support" 23 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 38config XFS_POSIX_ACL 39 bool "XFS POSIX ACL support" 40 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 50config XFS_RT 51 bool "XFS Realtime subvolume support" 52 depends on XFS_FS 53 help 54 If you say Y here you will be able to mount and use XFS filesystems 55 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. 63 64 See the xfs man page in section 5 for additional information. 65 66 If unsure, say N. 67 68config XFS_DEBUG 69 bool "XFS Debugging support (EXPERIMENTAL)" 70 depends on XFS_FS && EXPERIMENTAL 71 help 72 Say Y here to get an XFS build with many debugging features, 73 including ASSERT checks, function wrappers around macros, 74 and extra sanity-checking functions in various code paths. 75 76 Note that the resulting code will be HUGE and SLOW, and probably 77 not useful unless you are debugging a particular problem. 78 79 Say N unless you are an XFS developer, or you play one on TV. 80