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