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ec8f24b7 1# SPDX-License-Identifier: GPL-2.0-only
1da177e4
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2#
3# File system configuration
4#
5
6menu "File systems"
7
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8# Use unaligned word dcache accesses
9config DCACHE_WORD_ACCESS
10 bool
11
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12config VALIDATE_FS_PARSER
13 bool "Validate filesystem parameter description"
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14 help
15 Enable this to perform validation of the parameter description for a
16 filesystem when it is registered.
17
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18if BLOCK
19
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20config FS_IOMAP
21 bool
22
6da0b38f 23source "fs/ext2/Kconfig"
6da0b38f 24source "fs/ext4/Kconfig"
6da0b38f 25source "fs/jbd2/Kconfig"
dab291af 26
1da177e4 27config FS_MBCACHE
02ea2104 28# Meta block cache for Extended Attributes (ext2/ext3/ext4)
1da177e4 29 tristate
2c512397 30 default y if EXT2_FS=y && EXT2_FS_XATTR
939da108 31 default y if EXT4_FS=y
c290ea01 32 default m if EXT2_FS_XATTR || EXT4_FS
1da177e4 33
b16ecfe2 34source "fs/reiserfs/Kconfig"
f5c77969 35source "fs/jfs/Kconfig"
1da177e4 36
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37source "fs/xfs/Kconfig"
38source "fs/gfs2/Kconfig"
39source "fs/ocfs2/Kconfig"
40source "fs/btrfs/Kconfig"
41f4db0f 41source "fs/nilfs2/Kconfig"
d7196c5a 42source "fs/f2fs/Kconfig"
8dcc1a9d 43source "fs/zonefs/Kconfig"
69050eee 44
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45config FS_DAX
46 bool "Direct Access (DAX) support"
47 depends on MMU
d92576f1 48 depends on !(ARM || MIPS || SPARC)
e7638488 49 select DEV_PAGEMAP_OPS if (ZONE_DEVICE && !FS_DAX_LIMITED)
6affb9d7 50 select FS_IOMAP
ef510424 51 select DAX
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52 help
53 Direct Access (DAX) can be used on memory-backed block devices.
54 If the block device supports DAX and the filesystem supports DAX,
55 then you can avoid using the pagecache to buffer I/Os. Turning
56 on this option will compile in support for DAX; you will need to
57 mount the filesystem using the -o dax option.
58
59 If you do not have a block device that is capable of using this,
60 or if unsure, say N. Saying Y will increase the size of the kernel
61 by about 5kB.
62
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63config FS_DAX_PMD
64 bool
65 default FS_DAX
66 depends on FS_DAX
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67 depends on ZONE_DEVICE
68 depends on TRANSPARENT_HUGEPAGE
ee82c9ed 69
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70# Selected by DAX drivers that do not expect filesystem DAX to support
71# get_user_pages() of DAX mappings. I.e. "limited" indicates no support
72# for fork() of processes with MAP_SHARED mappings or support for
73# direct-I/O to a DAX mapping.
74config FS_DAX_LIMITED
75 bool
76
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77endif # BLOCK
78
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79# Posix ACL utility routines
80#
81# Note: Posix ACLs can be implemented without these helpers. Never use
82# this symbol for ifdefs in core code.
83#
84config FS_POSIX_ACL
85 def_bool n
86
4199ca77 87config EXPORTFS
79fead47 88 tristate
4199ca77 89
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90config EXPORTFS_BLOCK_OPS
91 bool "Enable filesystem export operations for block IO"
92 help
93 This option enables the export operations for a filesystem to support
94 external block IO.
95
bfcd17a6 96config FILE_LOCKING
6a108a14 97 bool "Enable POSIX file locking API" if EXPERT
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98 default y
99 help
100 This option enables standard file locking support, required
101 for filesystems like NFS and for the flock() system
102 call. Disabling this option saves about 11k.
103
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104config MANDATORY_FILE_LOCKING
105 bool "Enable Mandatory file locking"
106 depends on FILE_LOCKING
107 default y
108 help
109 This option enables files appropriately marked files on appropriely
110 mounted filesystems to support mandatory locking.
111
112 To the best of my knowledge this is dead code that no one cares about.
113
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114source "fs/crypto/Kconfig"
115
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116source "fs/verity/Kconfig"
117
272eb014 118source "fs/notify/Kconfig"
0eeca283 119
884d179d 120source "fs/quota/Kconfig"
1da177e4 121
2a3ae0a1 122source "fs/autofs/Kconfig"
3ef7784e 123source "fs/fuse/Kconfig"
e9be9d5e 124source "fs/overlayfs/Kconfig"
04578f17 125
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126config SHIFT_FS
127 tristate "UID/GID shifting overlay filesystem for containers"
128 help
129 This filesystem can overlay any mounted filesystem and shift
130 the uid/gid the files appear at. The idea is that
131 unprivileged containers can use this to mount root volumes
132 using this technique.
133
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134config SHIFT_FS_POSIX_ACL
135 bool "shiftfs POSIX Access Control Lists"
136 depends on SHIFT_FS
137 select FS_POSIX_ACL
138 help
139 POSIX Access Control Lists (ACLs) support permissions for users and
140 groups beyond the owner/group/world scheme.
141
142 If you don't know what Access Control Lists are, say N.
143
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144menu "Caches"
145
146source "fs/fscache/Kconfig"
9ae326a6 147source "fs/cachefiles/Kconfig"
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148
149endmenu
150
9361401e 151if BLOCK
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152menu "CD-ROM/DVD Filesystems"
153
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154source "fs/isofs/Kconfig"
155source "fs/udf/Kconfig"
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156
157endmenu
25fad945 158endif # BLOCK
1da177e4 159
9361401e 160if BLOCK
b9d1e2e6 161menu "DOS/FAT/EXFAT/NT Filesystems"
1da177e4 162
1c6ace01 163source "fs/fat/Kconfig"
b9d1e2e6 164source "fs/exfat/Kconfig"
9d73ac9e 165source "fs/ntfs/Kconfig"
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166
167endmenu
25fad945 168endif # BLOCK
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169
170menu "Pseudo filesystems"
171
6eedf8d3 172source "fs/proc/Kconfig"
ba341d55 173source "fs/kernfs/Kconfig"
5f3a211a 174source "fs/sysfs/Kconfig"
1da177e4 175
1da177e4 176config TMPFS
f5fc870d 177 bool "Tmpfs virtual memory file system support (former shm fs)"
3f96b79a 178 depends on SHMEM
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179 help
180 Tmpfs is a file system which keeps all files in virtual memory.
181
182 Everything in tmpfs is temporary in the sense that no files will be
183 created on your hard drive. The files live in memory and swap
184 space. If you unmount a tmpfs instance, everything stored therein is
185 lost.
186
0c1bc6b8 187 See <file:Documentation/filesystems/tmpfs.rst> for details.
1da177e4 188
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189config TMPFS_POSIX_ACL
190 bool "Tmpfs POSIX Access Control Lists"
191 depends on TMPFS
192 select TMPFS_XATTR
feda821e 193 select FS_POSIX_ACL
4db70f73 194 help
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195 POSIX Access Control Lists (ACLs) support additional access rights
196 for users and groups beyond the standard owner/group/world scheme,
197 and this option selects support for ACLs specifically for tmpfs
198 filesystems.
199
200 If you've selected TMPFS, it's possible that you'll also need
201 this option as there are a number of Linux distros that require
202 POSIX ACL support under /dev for certain features to work properly.
203 For example, some distros need this feature for ALSA-related /dev
204 files for sound to work properly. In short, if you're not sure,
205 say Y.
4db70f73 206
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207config TMPFS_XATTR
208 bool "Tmpfs extended attributes"
209 depends on TMPFS
210 default n
211 help
212 Extended attributes are name:value pairs associated with inodes by
91581e4c 213 the kernel or by users (see the attr(5) manual page for details).
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214
215 Currently this enables support for the trusted.* and
216 security.* namespaces.
217
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218 You need this for POSIX ACL support on tmpfs.
219
4db70f73 220 If unsure, say N.
39f0247d 221
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222config TMPFS_INODE64
223 bool "Use 64-bit ino_t by default in tmpfs"
ad69c389 224 depends on TMPFS && 64BIT && !(S390 || ALPHA)
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225 default n
226 help
227 tmpfs has historically used only inode numbers as wide as an unsigned
228 int. In some cases this can cause wraparound, potentially resulting
229 in multiple files with the same inode number on a single device. This
230 option makes tmpfs use the full width of ino_t by default, without
231 needing to specify the inode64 option when mounting.
232
233 But if a long-lived tmpfs is to be accessed by 32-bit applications so
234 ancient that opening a file larger than 2GiB fails with EINVAL, then
235 the INODE64 config option and inode64 mount option risk operations
236 failing with EOVERFLOW once 33-bit inode numbers are reached.
237
238 To override this configured default, use the inode32 or inode64
239 option when mounting.
240
241 If unsure, say N.
242
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243config HUGETLBFS
244 bool "HugeTLB file system support"
5a1eb5c4 245 depends on X86 || IA64 || SPARC64 || (S390 && 64BIT) || \
ffb4a73d 246 SYS_SUPPORTS_HUGETLBFS || BROKEN
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247 help
248 hugetlbfs is a filesystem backing for HugeTLB pages, based on
249 ramfs. For architectures that support it, say Y here and read
1ad1335d 250 <file:Documentation/admin-guide/mm/hugetlbpage.rst> for details.
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251
252 If unsure, say N.
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253
254config HUGETLB_PAGE
255 def_bool HUGETLBFS
256
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257config MEMFD_CREATE
258 def_bool TMPFS || HUGETLBFS
259
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260config ARCH_HAS_GIGANTIC_PAGE
261 bool
262
4591dabe 263source "fs/configfs/Kconfig"
62c204dd 264source "fs/efivarfs/Kconfig"
7063fbf2 265
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266endmenu
267
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268menuconfig MISC_FILESYSTEMS
269 bool "Miscellaneous filesystems"
270 default y
a7f7f624 271 help
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272 Say Y here to get to see options for various miscellaneous
273 filesystems, such as filesystems that came from other
274 operating systems.
275
276 This option alone does not add any kernel code.
277
278 If you say N, all options in this submenu will be skipped and
279 disabled; if unsure, say Y here.
280
281if MISC_FILESYSTEMS
1da177e4 282
07f01962 283source "fs/orangefs/Kconfig"
bc2de2ae 284source "fs/adfs/Kconfig"
10951bf0 285source "fs/affs/Kconfig"
295c896c 286source "fs/ecryptfs/Kconfig"
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287source "fs/hfs/Kconfig"
288source "fs/hfsplus/Kconfig"
0b09eb32 289source "fs/befs/Kconfig"
0ff42384 290source "fs/bfs/Kconfig"
571f0a0b 291source "fs/efs/Kconfig"
31db6e9e 292source "fs/jffs2/Kconfig"
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293# UBIFS File system configuration
294source "fs/ubifs/Kconfig"
2a22783b 295source "fs/cramfs/Kconfig"
22635ec9 296source "fs/squashfs/Kconfig"
22135169 297source "fs/freevxfs/Kconfig"
8b1cd7d3 298source "fs/minix/Kconfig"
da55e6f9 299source "fs/omfs/Kconfig"
928ea192 300source "fs/hpfs/Kconfig"
4c741583 301source "fs/qnx4/Kconfig"
5d026c72 302source "fs/qnx6/Kconfig"
41810246 303source "fs/romfs/Kconfig"
ca01d6dd 304source "fs/pstore/Kconfig"
8af915ba 305source "fs/sysv/Kconfig"
a276a52f 306source "fs/ufs/Kconfig"
47e4937a 307source "fs/erofs/Kconfig"
0fd16957 308source "fs/vboxsf/Kconfig"
0d331203 309source "fs/aufs/Kconfig"
0c4fb877 310
67ec7d3a 311endif # MISC_FILESYSTEMS
1da177e4 312
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313menuconfig NETWORK_FILESYSTEMS
314 bool "Network File Systems"
315 default y
1da177e4 316 depends on NET
a7f7f624 317 help
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318 Say Y here to get to see options for network filesystems and
319 filesystem-related networking code, such as NFS daemon and
320 RPCSEC security modules.
6fb1bc10 321
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322 This option alone does not add any kernel code.
323
324 If you say N, all options in this submenu will be skipped and
325 disabled; if unsure, say Y here.
326
327if NETWORK_FILESYSTEMS
1da177e4 328
97afe47a 329source "fs/nfs/Kconfig"
e2b329e2 330source "fs/nfsd/Kconfig"
1da177e4 331
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332config GRACE_PERIOD
333 tristate
334
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335config LOCKD
336 tristate
dd4dc82d 337 depends on FILE_LOCKING
f7790029 338 select GRACE_PERIOD
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339
340config LOCKD_V4
341 bool
342 depends on NFSD_V3 || NFS_V3
dd4dc82d 343 depends on FILE_LOCKING
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344 default y
345
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346config NFS_ACL_SUPPORT
347 tristate
348 select FS_POSIX_ACL
349
350config NFS_COMMON
351 bool
f7790029 352 depends on NFSD || NFS_FS || LOCKD
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353 default y
354
9098c24f 355source "net/sunrpc/Kconfig"
9030aaf9 356source "fs/ceph/Kconfig"
bb26b963 357source "fs/cifs/Kconfig"
33a1a6fe 358source "fs/coda/Kconfig"
b2480c7f 359source "fs/afs/Kconfig"
0fcb4408 360source "fs/9p/Kconfig"
93fa58cb 361
ea0985ad 362endif # NETWORK_FILESYSTEMS
1da177e4 363
1da177e4 364source "fs/nls/Kconfig"
e7fd4179 365source "fs/dlm/Kconfig"
955405d1 366source "fs/unicode/Kconfig"
1da177e4 367
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368config IO_WQ
369 bool
370
1da177e4 371endmenu