1 # SPDX-License-Identifier: GPL-2.0-only <<
2 # 1 #
3 # File system configuration 2 # File system configuration
4 # 3 #
5 4
6 menu "File systems" 5 menu "File systems"
7 6
8 # Use unaligned word dcache accesses 7 # Use unaligned word dcache accesses
9 config DCACHE_WORD_ACCESS 8 config DCACHE_WORD_ACCESS
10 bool 9 bool
11 10
12 config VALIDATE_FS_PARSER !! 11 if BLOCK
13 bool "Validate filesystem parameter de <<
14 help <<
15 Enable this to perform validation of <<
16 filesystem when it is registered. <<
17 12
18 config FS_IOMAP 13 config FS_IOMAP
19 bool 14 bool
20 15
21 # Stackable filesystems <<
22 config FS_STACK <<
23 bool <<
24 <<
25 config BUFFER_HEAD <<
26 bool <<
27 <<
28 # old blockdev_direct_IO implementation. Use <<
29 config LEGACY_DIRECT_IO <<
30 depends on BUFFER_HEAD <<
31 bool <<
32 <<
33 if BLOCK <<
34 <<
35 source "fs/ext2/Kconfig" 16 source "fs/ext2/Kconfig"
36 source "fs/ext4/Kconfig" 17 source "fs/ext4/Kconfig"
37 source "fs/jbd2/Kconfig" 18 source "fs/jbd2/Kconfig"
38 19
39 config FS_MBCACHE 20 config FS_MBCACHE
40 # Meta block cache for Extended Attributes (ex 21 # Meta block cache for Extended Attributes (ext2/ext3/ext4)
41 tristate 22 tristate
42 default y if EXT2_FS=y && EXT2_FS_XATT 23 default y if EXT2_FS=y && EXT2_FS_XATTR
43 default y if EXT4_FS=y 24 default y if EXT4_FS=y
44 default m if EXT2_FS_XATTR || EXT4_FS 25 default m if EXT2_FS_XATTR || EXT4_FS
45 26
46 source "fs/reiserfs/Kconfig" 27 source "fs/reiserfs/Kconfig"
47 source "fs/jfs/Kconfig" 28 source "fs/jfs/Kconfig"
48 29
49 source "fs/xfs/Kconfig" 30 source "fs/xfs/Kconfig"
50 source "fs/gfs2/Kconfig" 31 source "fs/gfs2/Kconfig"
51 source "fs/ocfs2/Kconfig" 32 source "fs/ocfs2/Kconfig"
52 source "fs/btrfs/Kconfig" 33 source "fs/btrfs/Kconfig"
53 source "fs/nilfs2/Kconfig" 34 source "fs/nilfs2/Kconfig"
54 source "fs/f2fs/Kconfig" 35 source "fs/f2fs/Kconfig"
55 source "fs/bcachefs/Kconfig" <<
56 source "fs/zonefs/Kconfig" <<
57 <<
58 endif # BLOCK <<
59 36
60 config FS_DAX 37 config FS_DAX
61 bool "File system based Direct Access !! 38 bool "Direct Access (DAX) support"
62 depends on MMU 39 depends on MMU
63 depends on ZONE_DEVICE || FS_DAX_LIMIT !! 40 depends on !(ARM || MIPS || SPARC)
64 select FS_IOMAP 41 select FS_IOMAP
65 select DAX <<
66 help 42 help
67 Direct Access (DAX) can be used on m 43 Direct Access (DAX) can be used on memory-backed block devices.
68 If the block device supports DAX and 44 If the block device supports DAX and the filesystem supports DAX,
69 then you can avoid using the pagecac 45 then you can avoid using the pagecache to buffer I/Os. Turning
70 on this option will compile in suppo !! 46 on this option will compile in support for DAX; you will need to
71 !! 47 mount the filesystem using the -o dax option.
72 For a DAX device to support file sys <<
73 struct pages. For the nfit based NV <<
74 using the ndctl utility: <<
75 <<
76 # ndctl create-namespace --for <<
77 --mode=fsdax --map=mem <<
78 <<
79 See the 'create-namespace' man page <<
80 --map=mem: <<
81 https://docs.pmem.io/ndctl-user-guid <<
82 <<
83 For ndctl to work CONFIG_DEV_DAX nee <<
84 file systems DAX support needs to be <<
85 per-inode using a mount option as we <<
86 Documentation/filesystems/dax.rst fo <<
87 48
88 If you do not have a block device th 49 If you do not have a block device that is capable of using this,
89 or if unsure, say N. Saying Y will 50 or if unsure, say N. Saying Y will increase the size of the kernel
90 by about 5kB. 51 by about 5kB.
91 52
92 config FS_DAX_PMD 53 config FS_DAX_PMD
93 bool 54 bool
94 default FS_DAX 55 default FS_DAX
95 depends on FS_DAX 56 depends on FS_DAX
96 depends on ZONE_DEVICE 57 depends on ZONE_DEVICE
97 depends on TRANSPARENT_HUGEPAGE 58 depends on TRANSPARENT_HUGEPAGE
98 59
99 # Selected by DAX drivers that do not expect f !! 60 endif # BLOCK
100 # get_user_pages() of DAX mappings. I.e. "limi <<
101 # for fork() of processes with MAP_SHARED mapp <<
102 # direct-I/O to a DAX mapping. <<
103 config FS_DAX_LIMITED <<
104 bool <<
105 61
106 # Posix ACL utility routines 62 # Posix ACL utility routines
107 # 63 #
108 # Note: Posix ACLs can be implemented without 64 # Note: Posix ACLs can be implemented without these helpers. Never use
109 # this symbol for ifdefs in core code. 65 # this symbol for ifdefs in core code.
110 # 66 #
111 config FS_POSIX_ACL 67 config FS_POSIX_ACL
112 def_bool n 68 def_bool n
113 69
114 config EXPORTFS 70 config EXPORTFS
115 tristate 71 tristate
116 72
117 config EXPORTFS_BLOCK_OPS 73 config EXPORTFS_BLOCK_OPS
118 bool "Enable filesystem export operati 74 bool "Enable filesystem export operations for block IO"
119 help 75 help
120 This option enables the export opera 76 This option enables the export operations for a filesystem to support
121 external block IO. 77 external block IO.
122 78
123 config FILE_LOCKING 79 config FILE_LOCKING
124 bool "Enable POSIX file locking API" i 80 bool "Enable POSIX file locking API" if EXPERT
125 default y 81 default y
>> 82 select PERCPU_RWSEM
126 help 83 help
127 This option enables standard file lo 84 This option enables standard file locking support, required
128 for filesystems like NFS and for the 85 for filesystems like NFS and for the flock() system
129 call. Disabling this option saves ab 86 call. Disabling this option saves about 11k.
130 87
131 source "fs/crypto/Kconfig" !! 88 config MANDATORY_FILE_LOCKING
>> 89 bool "Enable Mandatory file locking"
>> 90 depends on FILE_LOCKING
>> 91 default y
>> 92 help
>> 93 This option enables files appropriately marked files on appropriely
>> 94 mounted filesystems to support mandatory locking.
>> 95
>> 96 To the best of my knowledge this is dead code that no one cares about.
132 97
133 source "fs/verity/Kconfig" !! 98 source "fs/crypto/Kconfig"
134 99
135 source "fs/notify/Kconfig" 100 source "fs/notify/Kconfig"
136 101
137 source "fs/quota/Kconfig" 102 source "fs/quota/Kconfig"
138 103
139 source "fs/autofs/Kconfig" !! 104 source "fs/autofs4/Kconfig"
140 source "fs/fuse/Kconfig" 105 source "fs/fuse/Kconfig"
141 source "fs/overlayfs/Kconfig" 106 source "fs/overlayfs/Kconfig"
142 107
143 menu "Caches" 108 menu "Caches"
144 109
145 source "fs/netfs/Kconfig" !! 110 source "fs/fscache/Kconfig"
146 source "fs/cachefiles/Kconfig" 111 source "fs/cachefiles/Kconfig"
147 112
148 endmenu 113 endmenu
149 114
150 if BLOCK 115 if BLOCK
151 menu "CD-ROM/DVD Filesystems" 116 menu "CD-ROM/DVD Filesystems"
152 117
153 source "fs/isofs/Kconfig" 118 source "fs/isofs/Kconfig"
154 source "fs/udf/Kconfig" 119 source "fs/udf/Kconfig"
155 120
156 endmenu 121 endmenu
157 endif # BLOCK 122 endif # BLOCK
158 123
159 if BLOCK 124 if BLOCK
160 menu "DOS/FAT/EXFAT/NT Filesystems" !! 125 menu "DOS/FAT/NT Filesystems"
161 126
162 source "fs/fat/Kconfig" 127 source "fs/fat/Kconfig"
163 source "fs/exfat/Kconfig" !! 128 source "fs/ntfs/Kconfig"
164 source "fs/ntfs3/Kconfig" <<
165 129
166 endmenu 130 endmenu
167 endif # BLOCK 131 endif # BLOCK
168 132
169 menu "Pseudo filesystems" 133 menu "Pseudo filesystems"
170 134
171 source "fs/proc/Kconfig" 135 source "fs/proc/Kconfig"
172 source "fs/kernfs/Kconfig" 136 source "fs/kernfs/Kconfig"
173 source "fs/sysfs/Kconfig" 137 source "fs/sysfs/Kconfig"
174 138
175 config TMPFS 139 config TMPFS
176 bool "Tmpfs virtual memory file system 140 bool "Tmpfs virtual memory file system support (former shm fs)"
177 depends on SHMEM 141 depends on SHMEM
178 select MEMFD_CREATE <<
179 help 142 help
180 Tmpfs is a file system which keeps a 143 Tmpfs is a file system which keeps all files in virtual memory.
181 144
182 Everything in tmpfs is temporary in 145 Everything in tmpfs is temporary in the sense that no files will be
183 created on your hard drive. The file 146 created on your hard drive. The files live in memory and swap
184 space. If you unmount a tmpfs instan 147 space. If you unmount a tmpfs instance, everything stored therein is
185 lost. 148 lost.
186 149
187 See <file:Documentation/filesystems/ !! 150 See <file:Documentation/filesystems/tmpfs.txt> for details.
188 151
189 config TMPFS_POSIX_ACL 152 config TMPFS_POSIX_ACL
190 bool "Tmpfs POSIX Access Control Lists 153 bool "Tmpfs POSIX Access Control Lists"
191 depends on TMPFS 154 depends on TMPFS
192 select TMPFS_XATTR 155 select TMPFS_XATTR
193 select FS_POSIX_ACL 156 select FS_POSIX_ACL
194 help 157 help
195 POSIX Access Control Lists (ACLs) su 158 POSIX Access Control Lists (ACLs) support additional access rights
196 for users and groups beyond the stan 159 for users and groups beyond the standard owner/group/world scheme,
197 and this option selects support for 160 and this option selects support for ACLs specifically for tmpfs
198 filesystems. 161 filesystems.
199 162
200 If you've selected TMPFS, it's possi 163 If you've selected TMPFS, it's possible that you'll also need
201 this option as there are a number of 164 this option as there are a number of Linux distros that require
202 POSIX ACL support under /dev for cer 165 POSIX ACL support under /dev for certain features to work properly.
203 For example, some distros need this 166 For example, some distros need this feature for ALSA-related /dev
204 files for sound to work properly. I 167 files for sound to work properly. In short, if you're not sure,
205 say Y. 168 say Y.
206 169
>> 170 To learn more about Access Control Lists, visit the POSIX ACLs for
>> 171 Linux website <http://acl.bestbits.at/>.
>> 172
207 config TMPFS_XATTR 173 config TMPFS_XATTR
208 bool "Tmpfs extended attributes" 174 bool "Tmpfs extended attributes"
209 depends on TMPFS 175 depends on TMPFS
210 default n 176 default n
211 help 177 help
212 Extended attributes are name:value p 178 Extended attributes are name:value pairs associated with inodes by
213 the kernel or by users (see the attr !! 179 the kernel or by users (see the attr(5) manual page, or visit
>> 180 <http://acl.bestbits.at/> for details).
214 181
215 This enables support for the trusted !! 182 Currently this enables support for the trusted.* and
216 namespaces. !! 183 security.* namespaces.
217 184
218 You need this for POSIX ACL support 185 You need this for POSIX ACL support on tmpfs.
219 186
220 If unsure, say N. 187 If unsure, say N.
221 188
222 config TMPFS_INODE64 !! 189 config HUGETLBFS
223 bool "Use 64-bit ino_t by default in t <<
224 depends on TMPFS && 64BIT <<
225 default n <<
226 help <<
227 tmpfs has historically used only ino <<
228 int. In some cases this can cause wr <<
229 in multiple files with the same inod <<
230 option makes tmpfs use the full widt <<
231 needing to specify the inode64 optio <<
232 <<
233 But if a long-lived tmpfs is to be a <<
234 ancient that opening a file larger t <<
235 the INODE64 config option and inode6 <<
236 failing with EOVERFLOW once 33-bit i <<
237 <<
238 To override this configured default, <<
239 option when mounting. <<
240 <<
241 If unsure, say N. <<
242 <<
243 config TMPFS_QUOTA <<
244 bool "Tmpfs quota support" <<
245 depends on TMPFS <<
246 select QUOTA <<
247 help <<
248 Quota support allows to set per user <<
249 usage. Say Y to enable quota suppor <<
250 user and group quota enforcement wit <<
251 mount options. <<
252 <<
253 If unsure, say N. <<
254 <<
255 config ARCH_SUPPORTS_HUGETLBFS <<
256 def_bool n <<
257 <<
258 menuconfig HUGETLBFS <<
259 bool "HugeTLB file system support" 190 bool "HugeTLB file system support"
260 depends on X86 || SPARC64 || ARCH_SUPP !! 191 depends on X86 || IA64 || SPARC64 || (S390 && 64BIT) || \
261 depends on (SYSFS || SYSCTL) !! 192 SYS_SUPPORTS_HUGETLBFS || BROKEN
262 select MEMFD_CREATE <<
263 select PADATA if SMP <<
264 help 193 help
265 hugetlbfs is a filesystem backing fo 194 hugetlbfs is a filesystem backing for HugeTLB pages, based on
266 ramfs. For architectures that suppor 195 ramfs. For architectures that support it, say Y here and read
267 <file:Documentation/admin-guide/mm/h !! 196 <file:Documentation/vm/hugetlbpage.txt> for details.
268 197
269 If unsure, say N. 198 If unsure, say N.
270 199
271 if HUGETLBFS <<
272 config HUGETLB_PAGE_OPTIMIZE_VMEMMAP_DEFAULT_O <<
273 bool "HugeTLB Vmemmap Optimization (HV <<
274 default n <<
275 depends on HUGETLB_PAGE_OPTIMIZE_VMEMM <<
276 help <<
277 The HugeTLB Vmemmap Optimization (HV <<
278 enable HVO by default. It can be dis <<
279 (boot command line) or hugetlb_optim <<
280 endif # HUGETLBFS <<
281 <<
282 config HUGETLB_PAGE 200 config HUGETLB_PAGE
283 def_bool HUGETLBFS 201 def_bool HUGETLBFS
284 select XARRAY_MULTI <<
285 <<
286 config HUGETLB_PAGE_OPTIMIZE_VMEMMAP <<
287 def_bool HUGETLB_PAGE <<
288 depends on ARCH_WANT_OPTIMIZE_HUGETLB_ <<
289 depends on SPARSEMEM_VMEMMAP <<
290 <<
291 config HUGETLB_PMD_PAGE_TABLE_SHARING <<
292 def_bool HUGETLB_PAGE <<
293 depends on ARCH_WANT_HUGE_PMD_SHARE && <<
294 202
295 config ARCH_HAS_GIGANTIC_PAGE 203 config ARCH_HAS_GIGANTIC_PAGE
296 bool 204 bool
297 205
298 source "fs/configfs/Kconfig" 206 source "fs/configfs/Kconfig"
299 source "fs/efivarfs/Kconfig" 207 source "fs/efivarfs/Kconfig"
300 208
301 endmenu 209 endmenu
302 210
303 menuconfig MISC_FILESYSTEMS 211 menuconfig MISC_FILESYSTEMS
304 bool "Miscellaneous filesystems" 212 bool "Miscellaneous filesystems"
305 default y 213 default y
306 help !! 214 ---help---
307 Say Y here to get to see options for 215 Say Y here to get to see options for various miscellaneous
308 filesystems, such as filesystems tha 216 filesystems, such as filesystems that came from other
309 operating systems. 217 operating systems.
310 218
311 This option alone does not add any k 219 This option alone does not add any kernel code.
312 220
313 If you say N, all options in this su 221 If you say N, all options in this submenu will be skipped and
314 disabled; if unsure, say Y here. 222 disabled; if unsure, say Y here.
315 223
316 if MISC_FILESYSTEMS 224 if MISC_FILESYSTEMS
317 225
318 source "fs/orangefs/Kconfig" 226 source "fs/orangefs/Kconfig"
319 source "fs/adfs/Kconfig" 227 source "fs/adfs/Kconfig"
320 source "fs/affs/Kconfig" 228 source "fs/affs/Kconfig"
321 source "fs/ecryptfs/Kconfig" 229 source "fs/ecryptfs/Kconfig"
322 source "fs/hfs/Kconfig" 230 source "fs/hfs/Kconfig"
323 source "fs/hfsplus/Kconfig" 231 source "fs/hfsplus/Kconfig"
324 source "fs/befs/Kconfig" 232 source "fs/befs/Kconfig"
325 source "fs/bfs/Kconfig" 233 source "fs/bfs/Kconfig"
326 source "fs/efs/Kconfig" 234 source "fs/efs/Kconfig"
327 source "fs/jffs2/Kconfig" 235 source "fs/jffs2/Kconfig"
328 # UBIFS File system configuration 236 # UBIFS File system configuration
329 source "fs/ubifs/Kconfig" 237 source "fs/ubifs/Kconfig"
330 source "fs/cramfs/Kconfig" 238 source "fs/cramfs/Kconfig"
331 source "fs/squashfs/Kconfig" 239 source "fs/squashfs/Kconfig"
332 source "fs/freevxfs/Kconfig" 240 source "fs/freevxfs/Kconfig"
333 source "fs/minix/Kconfig" 241 source "fs/minix/Kconfig"
334 source "fs/omfs/Kconfig" 242 source "fs/omfs/Kconfig"
335 source "fs/hpfs/Kconfig" 243 source "fs/hpfs/Kconfig"
336 source "fs/qnx4/Kconfig" 244 source "fs/qnx4/Kconfig"
337 source "fs/qnx6/Kconfig" 245 source "fs/qnx6/Kconfig"
338 source "fs/romfs/Kconfig" 246 source "fs/romfs/Kconfig"
339 source "fs/pstore/Kconfig" 247 source "fs/pstore/Kconfig"
340 source "fs/sysv/Kconfig" 248 source "fs/sysv/Kconfig"
341 source "fs/ufs/Kconfig" 249 source "fs/ufs/Kconfig"
342 source "fs/erofs/Kconfig" !! 250 source "fs/exofs/Kconfig"
343 source "fs/vboxsf/Kconfig" <<
344 251
345 endif # MISC_FILESYSTEMS 252 endif # MISC_FILESYSTEMS
346 253
>> 254 source "fs/exofs/Kconfig.ore"
>> 255
347 menuconfig NETWORK_FILESYSTEMS 256 menuconfig NETWORK_FILESYSTEMS
348 bool "Network File Systems" 257 bool "Network File Systems"
349 default y 258 default y
350 depends on NET 259 depends on NET
351 help !! 260 ---help---
352 Say Y here to get to see options for 261 Say Y here to get to see options for network filesystems and
353 filesystem-related networking code, 262 filesystem-related networking code, such as NFS daemon and
354 RPCSEC security modules. 263 RPCSEC security modules.
355 264
356 This option alone does not add any k 265 This option alone does not add any kernel code.
357 266
358 If you say N, all options in this su 267 If you say N, all options in this submenu will be skipped and
359 disabled; if unsure, say Y here. 268 disabled; if unsure, say Y here.
360 269
361 if NETWORK_FILESYSTEMS 270 if NETWORK_FILESYSTEMS
362 271
363 source "fs/nfs/Kconfig" 272 source "fs/nfs/Kconfig"
364 source "fs/nfsd/Kconfig" 273 source "fs/nfsd/Kconfig"
365 274
366 config GRACE_PERIOD 275 config GRACE_PERIOD
367 tristate 276 tristate
368 277
369 config LOCKD 278 config LOCKD
370 tristate 279 tristate
371 depends on FILE_LOCKING 280 depends on FILE_LOCKING
372 select GRACE_PERIOD 281 select GRACE_PERIOD
373 282
374 config LOCKD_V4 283 config LOCKD_V4
375 bool 284 bool
376 depends on NFSD || NFS_V3 !! 285 depends on NFSD_V3 || NFS_V3
377 depends on FILE_LOCKING 286 depends on FILE_LOCKING
378 default y 287 default y
379 288
380 config NFS_ACL_SUPPORT 289 config NFS_ACL_SUPPORT
381 tristate 290 tristate
382 select FS_POSIX_ACL 291 select FS_POSIX_ACL
383 292
384 config NFS_COMMON 293 config NFS_COMMON
385 bool 294 bool
386 depends on NFSD || NFS_FS || LOCKD 295 depends on NFSD || NFS_FS || LOCKD
387 default y 296 default y
388 297
389 config NFS_COMMON_LOCALIO_SUPPORT <<
390 tristate <<
391 depends on NFS_LOCALIO <<
392 default y if NFSD=y || NFS_FS=y <<
393 default m if NFSD=m && NFS_FS=m <<
394 select SUNRPC <<
395 <<
396 config NFS_LOCALIO <<
397 bool "NFS client and server support fo <<
398 depends on NFSD && NFS_FS <<
399 select NFS_COMMON_LOCALIO_SUPPORT <<
400 default n <<
401 help <<
402 Some NFS servers support an auxiliar <<
403 that is not an official part of the <<
404 <<
405 This option enables support for the <<
406 kernel's NFS server and client. Enab <<
407 NFS clients to bypass the network wh <<
408 writes to the local NFS server. <<
409 <<
410 If unsure, say N. <<
411 <<
412 config NFS_V4_2_SSC_HELPER <<
413 bool <<
414 default y if NFS_V4_2 <<
415 <<
416 source "net/sunrpc/Kconfig" 298 source "net/sunrpc/Kconfig"
417 source "fs/ceph/Kconfig" 299 source "fs/ceph/Kconfig"
418 !! 300 source "fs/cifs/Kconfig"
419 source "fs/smb/Kconfig" !! 301 source "fs/ncpfs/Kconfig"
420 source "fs/coda/Kconfig" 302 source "fs/coda/Kconfig"
421 source "fs/afs/Kconfig" 303 source "fs/afs/Kconfig"
422 source "fs/9p/Kconfig" 304 source "fs/9p/Kconfig"
423 305
424 endif # NETWORK_FILESYSTEMS 306 endif # NETWORK_FILESYSTEMS
425 307
426 source "fs/nls/Kconfig" 308 source "fs/nls/Kconfig"
427 source "fs/dlm/Kconfig" 309 source "fs/dlm/Kconfig"
428 source "fs/unicode/Kconfig" <<
429 <<
430 config IO_WQ <<
431 bool <<
432 310
433 endmenu 311 endmenu
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