1# SPDX-License-Identifier: GPL-2.0-only 2config XFS_FS 3 tristate "XFS filesystem support" 4 depends on BLOCK 5 select EXPORTFS 6 select LIBCRC32C 7 select FS_IOMAP 8 help 9 XFS is a high performance journaling filesystem which originated 10 on the SGI IRIX platform. It is completely multi-threaded, can 11 support large files and large filesystems, extended attributes, 12 variable block sizes, is extent based, and makes extensive use of 13 Btrees (directories, extents, free space) to aid both performance 14 and scalability. 15 16 Refer to the documentation at <http://oss.sgi.com/projects/xfs/> 17 for complete details. This implementation is on-disk compatible 18 with the IRIX version of XFS. 19 20 To compile this file system support as a module, choose M here: the 21 module will be called xfs. Be aware, however, that if the file 22 system of your root partition is compiled as a module, you'll need 23 to use an initial ramdisk (initrd) to boot. 24 25config XFS_QUOTA 26 bool "XFS Quota support" 27 depends on XFS_FS 28 select QUOTACTL 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_POSIX_ACL 44 bool "XFS POSIX ACL support" 45 depends on XFS_FS 46 select FS_POSIX_ACL 47 help 48 POSIX Access Control Lists (ACLs) support permissions for users and 49 groups beyond the owner/group/world scheme. 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_ONLINE_SCRUB 72 bool "XFS online metadata check support" 73 default n 74 depends on XFS_FS 75 help 76 If you say Y here you will be able to check metadata on a 77 mounted XFS filesystem. This feature is intended to reduce 78 filesystem downtime by supplementing xfs_repair. The key 79 advantage here is to look for problems proactively so that 80 they can be dealt with in a controlled manner. 81 82 This feature is considered EXPERIMENTAL. Use with caution! 83 84 See the xfs_scrub man page in section 8 for additional information. 85 86 If unsure, say N. 87 88config XFS_ONLINE_REPAIR 89 bool "XFS online metadata repair support" 90 default n 91 depends on XFS_FS && XFS_ONLINE_SCRUB 92 help 93 If you say Y here you will be able to repair metadata on a 94 mounted XFS filesystem. This feature is intended to reduce 95 filesystem downtime by fixing minor problems before they cause the 96 filesystem to go down. However, it requires that the filesystem be 97 formatted with secondary metadata, such as reverse mappings and inode 98 parent pointers. 99 100 This feature is considered EXPERIMENTAL. Use with caution! 101 102 See the xfs_scrub man page in section 8 for additional information. 103 104 If unsure, say N. 105 106config XFS_WARN 107 bool "XFS Verbose Warnings" 108 depends on XFS_FS && !XFS_DEBUG 109 help 110 Say Y here to get an XFS build with many additional warnings. 111 It converts ASSERT checks to WARN, so will log any out-of-bounds 112 conditions that occur that would otherwise be missed. It is much 113 lighter weight than XFS_DEBUG and does not modify algorithms and will 114 not cause the kernel to panic on non-fatal errors. 115 116 However, similar to XFS_DEBUG, it is only advisable to use this if you 117 are debugging a particular problem. 118 119config XFS_DEBUG 120 bool "XFS Debugging support" 121 depends on XFS_FS 122 help 123 Say Y here to get an XFS build with many debugging features, 124 including ASSERT checks, function wrappers around macros, 125 and extra sanity-checking functions in various code paths. 126 127 Note that the resulting code will be HUGE and SLOW, and probably 128 not useful unless you are debugging a particular problem. 129 130 Say N unless you are an XFS developer, or you play one on TV. 131 132config XFS_ASSERT_FATAL 133 bool "XFS fatal asserts" 134 default y 135 depends on XFS_FS && XFS_DEBUG 136 help 137 Set the default DEBUG mode ASSERT failure behavior. 138 139 Say Y here to cause DEBUG mode ASSERT failures to result in fatal 140 errors that BUG() the kernel by default. If you say N, ASSERT failures 141 result in warnings. 142 143 This behavior can be modified at runtime via sysfs. 144