1config XFS_FS 2 tristate "XFS filesystem support" 3 select EXPORTFS if NFSD!=n 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_EXPORT 22 bool 23 depends on XFS_FS && EXPORTFS 24 default y 25 26config XFS_QUOTA 27 bool "XFS Quota support" 28 depends on XFS_FS 29 help 30 If you say Y here, you will be able to set limits for disk usage on 31 a per user and/or a per group basis under XFS. XFS considers quota 32 information as filesystem metadata and uses journaling to provide a 33 higher level guarantee of consistency. The on-disk data format for 34 quota is also compatible with the IRIX version of XFS, allowing a 35 filesystem to be migrated between Linux and IRIX without any need 36 for conversion. 37 38 If unsure, say N. More comprehensive documentation can be found in 39 README.quota in the xfsprogs package. XFS quota can be used either 40 with or without the generic quota support enabled (CONFIG_QUOTA) - 41 they are completely independent subsystems. 42 43config XFS_SECURITY 44 bool "XFS Security Label support" 45 depends on XFS_FS 46 help 47 Security labels support alternative access control models 48 implemented by security modules like SELinux. This option 49 enables an extended attribute namespace for inode security 50 labels in the XFS filesystem. 51 52 If you are not using a security module that requires using 53 extended attributes for inode security labels, say N. 54 55config XFS_POSIX_ACL 56 bool "XFS POSIX ACL support" 57 depends on XFS_FS 58 help 59 POSIX Access Control Lists (ACLs) support permissions for users and 60 groups beyond the owner/group/world scheme. 61 62 To learn more about Access Control Lists, visit the POSIX ACLs for 63 Linux website <http://acl.bestbits.at/>. 64 65 If you don't know what Access Control Lists are, say N. 66 67config XFS_RT 68 bool "XFS Realtime support (EXPERIMENTAL)" 69 depends on XFS_FS && EXPERIMENTAL 70 help 71 If you say Y here you will be able to mount and use XFS filesystems 72 which contain a realtime subvolume. The realtime subvolume is a 73 separate area of disk space where only file data is stored. The 74 realtime subvolume is designed to provide very deterministic 75 data rates suitable for media streaming applications. 76 77 See the xfs man page in section 5 for a bit more information. 78 79 This feature is unsupported at this time, is not yet fully 80 functional, and may cause serious problems. 81 82 If unsure, say N. 83