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TOMOYO Linux Cross Reference
Linux/fs/xfs/Kconfig

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Diff markup

Differences between /fs/xfs/Kconfig (Version linux-6.12-rc7) and /fs/xfs/Kconfig (Version linux-4.18.20)


  1 # SPDX-License-Identifier: GPL-2.0-only        << 
  2 config XFS_FS                                       1 config XFS_FS
  3         tristate "XFS filesystem support"           2         tristate "XFS filesystem support"
  4         depends on BLOCK                            3         depends on BLOCK
                                                   >>   4         depends on (64BIT || LBDAF)
  5         select EXPORTFS                             5         select EXPORTFS
  6         select LIBCRC32C                            6         select LIBCRC32C
  7         select FS_IOMAP                             7         select FS_IOMAP
  8         help                                        8         help
  9           XFS is a high performance journaling      9           XFS is a high performance journaling filesystem which originated
 10           on the SGI IRIX platform.  It is com     10           on the SGI IRIX platform.  It is completely multi-threaded, can
 11           support large files and large filesy     11           support large files and large filesystems, extended attributes,
 12           variable block sizes, is extent base     12           variable block sizes, is extent based, and makes extensive use of
 13           Btrees (directories, extents, free s     13           Btrees (directories, extents, free space) to aid both performance
 14           and scalability.                         14           and scalability.
 15                                                    15 
 16           Refer to the documentation at <http:     16           Refer to the documentation at <http://oss.sgi.com/projects/xfs/>
 17           for complete details.  This implemen     17           for complete details.  This implementation is on-disk compatible
 18           with the IRIX version of XFS.            18           with the IRIX version of XFS.
 19                                                    19 
 20           To compile this file system support      20           To compile this file system support as a module, choose M here: the
 21           module will be called xfs.  Be aware     21           module will be called xfs.  Be aware, however, that if the file
 22           system of your root partition is com     22           system of your root partition is compiled as a module, you'll need
 23           to use an initial ramdisk (initrd) t     23           to use an initial ramdisk (initrd) to boot.
 24                                                    24 
 25 config XFS_SUPPORT_V4                          << 
 26         bool "Support deprecated V4 (crc=0) fo << 
 27         depends on XFS_FS                      << 
 28         default y                              << 
 29         help                                   << 
 30           The V4 filesystem format lacks certa << 
 31           by the V5 format, such as metadata c << 
 32           metadata verification, and the abili << 
 33           year 2038.  Because of this, the V4  << 
 34           should upgrade by backing up their f << 
 35           from the backup.                     << 
 36                                                << 
 37           Administrators and users can detect  << 
 38           xfs_info against a filesystem mountp << 
 39           beginning with "crc=".  If the strin << 
 40           filesystem is a V4 filesystem.  If n << 
 41           upgrade xfsprogs to the latest versi << 
 42                                                << 
 43           This option will become default N in << 
 44           V4 format will be removed entirely i << 
 45           can say N here to withdraw support e << 
 46                                                << 
 47           To continue supporting the old V4 fo << 
 48           To close off an attack surface, say  << 
 49                                                << 
 50 config XFS_SUPPORT_ASCII_CI                    << 
 51         bool "Support deprecated case-insensit << 
 52         depends on XFS_FS                      << 
 53         default y                              << 
 54         help                                   << 
 55           The ASCII case insensitivity filesys << 
 56           on systems that have been coerced in << 
 57           not work on extended attributes.  Th << 
 58           the locale settings in userspace, so << 
 59           Enabling this feature makes XFS vuln << 
 60           attacks.  Because of this, the featu << 
 61           should upgrade by backing up their f << 
 62           from the backup.                     << 
 63                                                << 
 64           Administrators and users can detect  << 
 65           xfs_info against a filesystem mountp << 
 66           beginning with "ascii-ci=".  If the  << 
 67           filesystem is a case-insensitive fil << 
 68           found, please upgrade xfsprogs to th << 
 69                                                << 
 70           This option will become default N in << 
 71           feature will be removed entirely in  << 
 72           can say N here to withdraw support e << 
 73                                                << 
 74           To continue supporting case-insensit << 
 75           To close off an attack surface, say  << 
 76                                                << 
 77 config XFS_QUOTA                                   25 config XFS_QUOTA
 78         bool "XFS Quota support"                   26         bool "XFS Quota support"
 79         depends on XFS_FS                          27         depends on XFS_FS
 80         select QUOTACTL                            28         select QUOTACTL
 81         help                                       29         help
 82           If you say Y here, you will be able      30           If you say Y here, you will be able to set limits for disk usage on
 83           a per user and/or a per group basis      31           a per user and/or a per group basis under XFS.  XFS considers quota
 84           information as filesystem metadata a     32           information as filesystem metadata and uses journaling to provide a
 85           higher level guarantee of consistenc     33           higher level guarantee of consistency.  The on-disk data format for
 86           quota is also compatible with the IR     34           quota is also compatible with the IRIX version of XFS, allowing a
 87           filesystem to be migrated between Li     35           filesystem to be migrated between Linux and IRIX without any need
 88           for conversion.                          36           for conversion.
 89                                                    37 
 90           If unsure, say N.  More comprehensiv     38           If unsure, say N.  More comprehensive documentation can be found in
 91           README.quota in the xfsprogs package     39           README.quota in the xfsprogs package.  XFS quota can be used either
 92           with or without the generic quota su     40           with or without the generic quota support enabled (CONFIG_QUOTA) -
 93           they are completely independent subs     41           they are completely independent subsystems.
 94                                                    42 
 95 config XFS_POSIX_ACL                               43 config XFS_POSIX_ACL
 96         bool "XFS POSIX ACL support"               44         bool "XFS POSIX ACL support"
 97         depends on XFS_FS                          45         depends on XFS_FS
 98         select FS_POSIX_ACL                        46         select FS_POSIX_ACL
 99         help                                       47         help
100           POSIX Access Control Lists (ACLs) su     48           POSIX Access Control Lists (ACLs) support permissions for users and
101           groups beyond the owner/group/world      49           groups beyond the owner/group/world scheme.
102                                                    50 
103           If you don't know what Access Contro     51           If you don't know what Access Control Lists are, say N.
104                                                    52 
105 config XFS_RT                                      53 config XFS_RT
106         bool "XFS Realtime subvolume support"      54         bool "XFS Realtime subvolume support"
107         depends on XFS_FS                          55         depends on XFS_FS
108         help                                       56         help
109           If you say Y here you will be able t     57           If you say Y here you will be able to mount and use XFS filesystems
110           which contain a realtime subvolume.      58           which contain a realtime subvolume.  The realtime subvolume is a
111           separate area of disk space where on     59           separate area of disk space where only file data is stored.  It was
112           originally designed to provide deter     60           originally designed to provide deterministic data rates suitable
113           for media streaming applications, bu     61           for media streaming applications, but is also useful as a generic
114           mechanism for ensuring data and meta     62           mechanism for ensuring data and metadata/log I/Os are completely
115           separated.  Regular file I/Os are is     63           separated.  Regular file I/Os are isolated to a separate device
116           from all other requests, and this ca     64           from all other requests, and this can be done quite transparently
117           to applications via the inherit-real     65           to applications via the inherit-realtime directory inode flag.
118                                                    66 
119           See the xfs man page in section 5 fo     67           See the xfs man page in section 5 for additional information.
120                                                    68 
121           If unsure, say N.                        69           If unsure, say N.
122                                                    70 
123 config XFS_DRAIN_INTENTS                       << 
124         bool                                   << 
125         select JUMP_LABEL if HAVE_ARCH_JUMP_LA << 
126                                                << 
127 config XFS_LIVE_HOOKS                          << 
128         bool                                   << 
129         select JUMP_LABEL if HAVE_ARCH_JUMP_LA << 
130                                                << 
131 config XFS_MEMORY_BUFS                         << 
132         bool                                   << 
133                                                << 
134 config XFS_BTREE_IN_MEM                        << 
135         bool                                   << 
136                                                << 
137 config XFS_ONLINE_SCRUB                            71 config XFS_ONLINE_SCRUB
138         bool "XFS online metadata check suppor     72         bool "XFS online metadata check support"
139         default n                                  73         default n
140         depends on XFS_FS                          74         depends on XFS_FS
141         depends on TMPFS && SHMEM              << 
142         select XFS_LIVE_HOOKS                  << 
143         select XFS_DRAIN_INTENTS               << 
144         select XFS_MEMORY_BUFS                 << 
145         help                                       75         help
146           If you say Y here you will be able t     76           If you say Y here you will be able to check metadata on a
147           mounted XFS filesystem.  This featur     77           mounted XFS filesystem.  This feature is intended to reduce
148           filesystem downtime by supplementing     78           filesystem downtime by supplementing xfs_repair.  The key
149           advantage here is to look for proble     79           advantage here is to look for problems proactively so that
150           they can be dealt with in a controll     80           they can be dealt with in a controlled manner.
151                                                    81 
152           This feature is considered EXPERIMEN     82           This feature is considered EXPERIMENTAL.  Use with caution!
153                                                    83 
154           See the xfs_scrub man page in sectio     84           See the xfs_scrub man page in section 8 for additional information.
155                                                    85 
156           If unsure, say N.                        86           If unsure, say N.
157                                                    87 
158 config XFS_ONLINE_SCRUB_STATS                  << 
159         bool "XFS online metadata check usage  << 
160         default y                              << 
161         depends on XFS_ONLINE_SCRUB            << 
162         select DEBUG_FS                        << 
163         help                                   << 
164           If you say Y here, the kernel will g << 
165           the online metadata check subsystem. << 
166           of invocations, the outcomes, and th << 
167           This may slow down scrub slightly du << 
168           timers and the need to merge per-inv << 
169           filesystem counters.                 << 
170                                                << 
171           Usage data are collected in /sys/ker << 
172                                                << 
173           If unsure, say N.                    << 
174                                                << 
175 config XFS_ONLINE_REPAIR                           88 config XFS_ONLINE_REPAIR
176         bool "XFS online metadata repair suppo     89         bool "XFS online metadata repair support"
177         default n                                  90         default n
178         depends on XFS_FS && XFS_ONLINE_SCRUB      91         depends on XFS_FS && XFS_ONLINE_SCRUB
179         select XFS_BTREE_IN_MEM                << 
180         help                                       92         help
181           If you say Y here you will be able t     93           If you say Y here you will be able to repair metadata on a
182           mounted XFS filesystem.  This featur     94           mounted XFS filesystem.  This feature is intended to reduce
183           filesystem downtime by fixing minor      95           filesystem downtime by fixing minor problems before they cause the
184           filesystem to go down.  However, it      96           filesystem to go down.  However, it requires that the filesystem be
185           formatted with secondary metadata, s     97           formatted with secondary metadata, such as reverse mappings and inode
186           parent pointers.                         98           parent pointers.
187                                                    99 
188           This feature is considered EXPERIMEN    100           This feature is considered EXPERIMENTAL.  Use with caution!
189                                                   101 
190           See the xfs_scrub man page in sectio    102           See the xfs_scrub man page in section 8 for additional information.
191                                                   103 
192           If unsure, say N.                       104           If unsure, say N.
193                                                   105 
194 config XFS_WARN                                   106 config XFS_WARN
195         bool "XFS Verbose Warnings"               107         bool "XFS Verbose Warnings"
196         depends on XFS_FS && !XFS_DEBUG           108         depends on XFS_FS && !XFS_DEBUG
197         help                                      109         help
198           Say Y here to get an XFS build with     110           Say Y here to get an XFS build with many additional warnings.
199           It converts ASSERT checks to WARN, s    111           It converts ASSERT checks to WARN, so will log any out-of-bounds
200           conditions that occur that would oth    112           conditions that occur that would otherwise be missed. It is much
201           lighter weight than XFS_DEBUG and do    113           lighter weight than XFS_DEBUG and does not modify algorithms and will
202           not cause the kernel to panic on non    114           not cause the kernel to panic on non-fatal errors.
203                                                   115 
204           However, similar to XFS_DEBUG, it is    116           However, similar to XFS_DEBUG, it is only advisable to use this if you
205           are debugging a particular problem.     117           are debugging a particular problem.
206                                                   118 
207 config XFS_DEBUG                                  119 config XFS_DEBUG
208         bool "XFS Debugging support"              120         bool "XFS Debugging support"
209         depends on XFS_FS                         121         depends on XFS_FS
210         help                                      122         help
211           Say Y here to get an XFS build with     123           Say Y here to get an XFS build with many debugging features,
212           including ASSERT checks, function wr    124           including ASSERT checks, function wrappers around macros,
213           and extra sanity-checking functions     125           and extra sanity-checking functions in various code paths.
214                                                   126 
215           Note that the resulting code will be    127           Note that the resulting code will be HUGE and SLOW, and probably
216           not useful unless you are debugging  << 
217                                                << 
218           Say N unless you are an XFS develope << 
219                                                << 
220 config XFS_DEBUG_EXPENSIVE                     << 
221         bool "XFS expensive debugging checks"  << 
222         depends on XFS_FS && XFS_DEBUG         << 
223         help                                   << 
224           Say Y here to get an XFS build with  << 
225           enabled.  These checks may affect pe << 
226                                                << 
227           Note that the resulting code will be << 
228           not useful unless you are debugging     128           not useful unless you are debugging a particular problem.
229                                                   129 
230           Say N unless you are an XFS develope    130           Say N unless you are an XFS developer, or you play one on TV.
231                                                   131 
232 config XFS_ASSERT_FATAL                           132 config XFS_ASSERT_FATAL
233         bool "XFS fatal asserts"                  133         bool "XFS fatal asserts"
234         default y                                 134         default y
235         depends on XFS_FS && XFS_DEBUG            135         depends on XFS_FS && XFS_DEBUG
236         help                                      136         help
237           Set the default DEBUG mode ASSERT fa    137           Set the default DEBUG mode ASSERT failure behavior.
238                                                   138 
239           Say Y here to cause DEBUG mode ASSER    139           Say Y here to cause DEBUG mode ASSERT failures to result in fatal
240           errors that BUG() the kernel by defa    140           errors that BUG() the kernel by default. If you say N, ASSERT failures
241           result in warnings.                     141           result in warnings.
242                                                   142 
243           This behavior can be modified at run    143           This behavior can be modified at runtime via sysfs.
                                                      

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