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