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 42 select DAX
66 help 43 help
67 Direct Access (DAX) can be used on m 44 Direct Access (DAX) can be used on memory-backed block devices.
68 If the block device supports DAX and 45 If the block device supports DAX and the filesystem supports DAX,
69 then you can avoid using the pagecac 46 then you can avoid using the pagecache to buffer I/Os. Turning
70 on this option will compile in suppo !! 47 on this option will compile in support for DAX; you will need to
71 !! 48 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 49
88 If you do not have a block device th 50 If you do not have a block device that is capable of using this,
89 or if unsure, say N. Saying Y will 51 or if unsure, say N. Saying Y will increase the size of the kernel
90 by about 5kB. 52 by about 5kB.
91 53
92 config FS_DAX_PMD 54 config FS_DAX_PMD
93 bool 55 bool
94 default FS_DAX 56 default FS_DAX
95 depends on FS_DAX 57 depends on FS_DAX
96 depends on ZONE_DEVICE 58 depends on ZONE_DEVICE
97 depends on TRANSPARENT_HUGEPAGE 59 depends on TRANSPARENT_HUGEPAGE
98 60
99 # Selected by DAX drivers that do not expect f 61 # Selected by DAX drivers that do not expect filesystem DAX to support
100 # get_user_pages() of DAX mappings. I.e. "limi 62 # get_user_pages() of DAX mappings. I.e. "limited" indicates no support
101 # for fork() of processes with MAP_SHARED mapp 63 # for fork() of processes with MAP_SHARED mappings or support for
102 # direct-I/O to a DAX mapping. 64 # direct-I/O to a DAX mapping.
103 config FS_DAX_LIMITED 65 config FS_DAX_LIMITED
104 bool 66 bool
105 67
>> 68 endif # BLOCK
>> 69
106 # Posix ACL utility routines 70 # Posix ACL utility routines
107 # 71 #
108 # Note: Posix ACLs can be implemented without 72 # Note: Posix ACLs can be implemented without these helpers. Never use
109 # this symbol for ifdefs in core code. 73 # this symbol for ifdefs in core code.
110 # 74 #
111 config FS_POSIX_ACL 75 config FS_POSIX_ACL
112 def_bool n 76 def_bool n
113 77
114 config EXPORTFS 78 config EXPORTFS
115 tristate 79 tristate
116 80
117 config EXPORTFS_BLOCK_OPS 81 config EXPORTFS_BLOCK_OPS
118 bool "Enable filesystem export operati 82 bool "Enable filesystem export operations for block IO"
119 help 83 help
120 This option enables the export opera 84 This option enables the export operations for a filesystem to support
121 external block IO. 85 external block IO.
122 86
123 config FILE_LOCKING 87 config FILE_LOCKING
124 bool "Enable POSIX file locking API" i 88 bool "Enable POSIX file locking API" if EXPERT
125 default y 89 default y
126 help 90 help
127 This option enables standard file lo 91 This option enables standard file locking support, required
128 for filesystems like NFS and for the 92 for filesystems like NFS and for the flock() system
129 call. Disabling this option saves ab 93 call. Disabling this option saves about 11k.
130 94
131 source "fs/crypto/Kconfig" !! 95 config MANDATORY_FILE_LOCKING
>> 96 bool "Enable Mandatory file locking"
>> 97 depends on FILE_LOCKING
>> 98 default y
>> 99 help
>> 100 This option enables files appropriately marked files on appropriely
>> 101 mounted filesystems to support mandatory locking.
>> 102
>> 103 To the best of my knowledge this is dead code that no one cares about.
132 104
133 source "fs/verity/Kconfig" !! 105 source "fs/crypto/Kconfig"
134 106
135 source "fs/notify/Kconfig" 107 source "fs/notify/Kconfig"
136 108
137 source "fs/quota/Kconfig" 109 source "fs/quota/Kconfig"
138 110
139 source "fs/autofs/Kconfig" !! 111 source "fs/autofs4/Kconfig"
140 source "fs/fuse/Kconfig" 112 source "fs/fuse/Kconfig"
141 source "fs/overlayfs/Kconfig" 113 source "fs/overlayfs/Kconfig"
142 114
143 menu "Caches" 115 menu "Caches"
144 116
145 source "fs/netfs/Kconfig" !! 117 source "fs/fscache/Kconfig"
146 source "fs/cachefiles/Kconfig" 118 source "fs/cachefiles/Kconfig"
147 119
148 endmenu 120 endmenu
149 121
150 if BLOCK 122 if BLOCK
151 menu "CD-ROM/DVD Filesystems" 123 menu "CD-ROM/DVD Filesystems"
152 124
153 source "fs/isofs/Kconfig" 125 source "fs/isofs/Kconfig"
154 source "fs/udf/Kconfig" 126 source "fs/udf/Kconfig"
155 127
156 endmenu 128 endmenu
157 endif # BLOCK 129 endif # BLOCK
158 130
159 if BLOCK 131 if BLOCK
160 menu "DOS/FAT/EXFAT/NT Filesystems" !! 132 menu "DOS/FAT/NT Filesystems"
161 133
162 source "fs/fat/Kconfig" 134 source "fs/fat/Kconfig"
163 source "fs/exfat/Kconfig" !! 135 source "fs/ntfs/Kconfig"
164 source "fs/ntfs3/Kconfig" <<
165 136
166 endmenu 137 endmenu
167 endif # BLOCK 138 endif # BLOCK
168 139
169 menu "Pseudo filesystems" 140 menu "Pseudo filesystems"
170 141
171 source "fs/proc/Kconfig" 142 source "fs/proc/Kconfig"
172 source "fs/kernfs/Kconfig" 143 source "fs/kernfs/Kconfig"
173 source "fs/sysfs/Kconfig" 144 source "fs/sysfs/Kconfig"
174 145
175 config TMPFS 146 config TMPFS
176 bool "Tmpfs virtual memory file system 147 bool "Tmpfs virtual memory file system support (former shm fs)"
177 depends on SHMEM 148 depends on SHMEM
178 select MEMFD_CREATE <<
179 help 149 help
180 Tmpfs is a file system which keeps a 150 Tmpfs is a file system which keeps all files in virtual memory.
181 151
182 Everything in tmpfs is temporary in 152 Everything in tmpfs is temporary in the sense that no files will be
183 created on your hard drive. The file 153 created on your hard drive. The files live in memory and swap
184 space. If you unmount a tmpfs instan 154 space. If you unmount a tmpfs instance, everything stored therein is
185 lost. 155 lost.
186 156
187 See <file:Documentation/filesystems/ !! 157 See <file:Documentation/filesystems/tmpfs.txt> for details.
188 158
189 config TMPFS_POSIX_ACL 159 config TMPFS_POSIX_ACL
190 bool "Tmpfs POSIX Access Control Lists 160 bool "Tmpfs POSIX Access Control Lists"
191 depends on TMPFS 161 depends on TMPFS
192 select TMPFS_XATTR 162 select TMPFS_XATTR
193 select FS_POSIX_ACL 163 select FS_POSIX_ACL
194 help 164 help
195 POSIX Access Control Lists (ACLs) su 165 POSIX Access Control Lists (ACLs) support additional access rights
196 for users and groups beyond the stan 166 for users and groups beyond the standard owner/group/world scheme,
197 and this option selects support for 167 and this option selects support for ACLs specifically for tmpfs
198 filesystems. 168 filesystems.
199 169
200 If you've selected TMPFS, it's possi 170 If you've selected TMPFS, it's possible that you'll also need
201 this option as there are a number of 171 this option as there are a number of Linux distros that require
202 POSIX ACL support under /dev for cer 172 POSIX ACL support under /dev for certain features to work properly.
203 For example, some distros need this 173 For example, some distros need this feature for ALSA-related /dev
204 files for sound to work properly. I 174 files for sound to work properly. In short, if you're not sure,
205 say Y. 175 say Y.
206 176
207 config TMPFS_XATTR 177 config TMPFS_XATTR
208 bool "Tmpfs extended attributes" 178 bool "Tmpfs extended attributes"
209 depends on TMPFS 179 depends on TMPFS
210 default n 180 default n
211 help 181 help
212 Extended attributes are name:value p 182 Extended attributes are name:value pairs associated with inodes by
213 the kernel or by users (see the attr 183 the kernel or by users (see the attr(5) manual page for details).
214 184
215 This enables support for the trusted !! 185 Currently this enables support for the trusted.* and
216 namespaces. !! 186 security.* namespaces.
217 187
218 You need this for POSIX ACL support 188 You need this for POSIX ACL support on tmpfs.
219 189
220 If unsure, say N. 190 If unsure, say N.
221 191
222 config TMPFS_INODE64 !! 192 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" 193 bool "HugeTLB file system support"
260 depends on X86 || SPARC64 || ARCH_SUPP !! 194 depends on X86 || IA64 || SPARC64 || (S390 && 64BIT) || \
261 depends on (SYSFS || SYSCTL) !! 195 SYS_SUPPORTS_HUGETLBFS || BROKEN
262 select MEMFD_CREATE <<
263 select PADATA if SMP <<
264 help 196 help
265 hugetlbfs is a filesystem backing fo 197 hugetlbfs is a filesystem backing for HugeTLB pages, based on
266 ramfs. For architectures that suppor 198 ramfs. For architectures that support it, say Y here and read
267 <file:Documentation/admin-guide/mm/h !! 199 <file:Documentation/vm/hugetlbpage.txt> for details.
268 200
269 If unsure, say N. 201 If unsure, say N.
270 202
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 203 config HUGETLB_PAGE
283 def_bool HUGETLBFS 204 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 && <<
294 205
295 config ARCH_HAS_GIGANTIC_PAGE 206 config ARCH_HAS_GIGANTIC_PAGE
296 bool 207 bool
297 208
298 source "fs/configfs/Kconfig" 209 source "fs/configfs/Kconfig"
299 source "fs/efivarfs/Kconfig" 210 source "fs/efivarfs/Kconfig"
300 211
301 endmenu 212 endmenu
302 213
303 menuconfig MISC_FILESYSTEMS 214 menuconfig MISC_FILESYSTEMS
304 bool "Miscellaneous filesystems" 215 bool "Miscellaneous filesystems"
305 default y 216 default y
306 help !! 217 ---help---
307 Say Y here to get to see options for 218 Say Y here to get to see options for various miscellaneous
308 filesystems, such as filesystems tha 219 filesystems, such as filesystems that came from other
309 operating systems. 220 operating systems.
310 221
311 This option alone does not add any k 222 This option alone does not add any kernel code.
312 223
313 If you say N, all options in this su 224 If you say N, all options in this submenu will be skipped and
314 disabled; if unsure, say Y here. 225 disabled; if unsure, say Y here.
315 226
316 if MISC_FILESYSTEMS 227 if MISC_FILESYSTEMS
317 228
318 source "fs/orangefs/Kconfig" 229 source "fs/orangefs/Kconfig"
319 source "fs/adfs/Kconfig" 230 source "fs/adfs/Kconfig"
320 source "fs/affs/Kconfig" 231 source "fs/affs/Kconfig"
321 source "fs/ecryptfs/Kconfig" 232 source "fs/ecryptfs/Kconfig"
322 source "fs/hfs/Kconfig" 233 source "fs/hfs/Kconfig"
323 source "fs/hfsplus/Kconfig" 234 source "fs/hfsplus/Kconfig"
324 source "fs/befs/Kconfig" 235 source "fs/befs/Kconfig"
325 source "fs/bfs/Kconfig" 236 source "fs/bfs/Kconfig"
326 source "fs/efs/Kconfig" 237 source "fs/efs/Kconfig"
327 source "fs/jffs2/Kconfig" 238 source "fs/jffs2/Kconfig"
328 # UBIFS File system configuration 239 # UBIFS File system configuration
329 source "fs/ubifs/Kconfig" 240 source "fs/ubifs/Kconfig"
330 source "fs/cramfs/Kconfig" 241 source "fs/cramfs/Kconfig"
331 source "fs/squashfs/Kconfig" 242 source "fs/squashfs/Kconfig"
332 source "fs/freevxfs/Kconfig" 243 source "fs/freevxfs/Kconfig"
333 source "fs/minix/Kconfig" 244 source "fs/minix/Kconfig"
334 source "fs/omfs/Kconfig" 245 source "fs/omfs/Kconfig"
335 source "fs/hpfs/Kconfig" 246 source "fs/hpfs/Kconfig"
336 source "fs/qnx4/Kconfig" 247 source "fs/qnx4/Kconfig"
337 source "fs/qnx6/Kconfig" 248 source "fs/qnx6/Kconfig"
338 source "fs/romfs/Kconfig" 249 source "fs/romfs/Kconfig"
339 source "fs/pstore/Kconfig" 250 source "fs/pstore/Kconfig"
340 source "fs/sysv/Kconfig" 251 source "fs/sysv/Kconfig"
341 source "fs/ufs/Kconfig" 252 source "fs/ufs/Kconfig"
342 source "fs/erofs/Kconfig" !! 253 source "fs/exofs/Kconfig"
343 source "fs/vboxsf/Kconfig" <<
344 254
345 endif # MISC_FILESYSTEMS 255 endif # MISC_FILESYSTEMS
346 256
>> 257 source "fs/exofs/Kconfig.ore"
>> 258
347 menuconfig NETWORK_FILESYSTEMS 259 menuconfig NETWORK_FILESYSTEMS
348 bool "Network File Systems" 260 bool "Network File Systems"
349 default y 261 default y
350 depends on NET 262 depends on NET
351 help !! 263 ---help---
352 Say Y here to get to see options for 264 Say Y here to get to see options for network filesystems and
353 filesystem-related networking code, 265 filesystem-related networking code, such as NFS daemon and
354 RPCSEC security modules. 266 RPCSEC security modules.
355 267
356 This option alone does not add any k 268 This option alone does not add any kernel code.
357 269
358 If you say N, all options in this su 270 If you say N, all options in this submenu will be skipped and
359 disabled; if unsure, say Y here. 271 disabled; if unsure, say Y here.
360 272
361 if NETWORK_FILESYSTEMS 273 if NETWORK_FILESYSTEMS
362 274
363 source "fs/nfs/Kconfig" 275 source "fs/nfs/Kconfig"
364 source "fs/nfsd/Kconfig" 276 source "fs/nfsd/Kconfig"
365 277
366 config GRACE_PERIOD 278 config GRACE_PERIOD
367 tristate 279 tristate
368 280
369 config LOCKD 281 config LOCKD
370 tristate 282 tristate
371 depends on FILE_LOCKING 283 depends on FILE_LOCKING
372 select GRACE_PERIOD 284 select GRACE_PERIOD
373 285
374 config LOCKD_V4 286 config LOCKD_V4
375 bool 287 bool
376 depends on NFSD || NFS_V3 !! 288 depends on NFSD_V3 || NFS_V3
377 depends on FILE_LOCKING 289 depends on FILE_LOCKING
378 default y 290 default y
379 291
380 config NFS_ACL_SUPPORT 292 config NFS_ACL_SUPPORT
381 tristate 293 tristate
382 select FS_POSIX_ACL 294 select FS_POSIX_ACL
383 295
384 config NFS_COMMON 296 config NFS_COMMON
385 bool 297 bool
386 depends on NFSD || NFS_FS || LOCKD 298 depends on NFSD || NFS_FS || LOCKD
387 default y 299 default y
388 300
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" 301 source "net/sunrpc/Kconfig"
417 source "fs/ceph/Kconfig" 302 source "fs/ceph/Kconfig"
418 !! 303 source "fs/cifs/Kconfig"
419 source "fs/smb/Kconfig" <<
420 source "fs/coda/Kconfig" 304 source "fs/coda/Kconfig"
421 source "fs/afs/Kconfig" 305 source "fs/afs/Kconfig"
422 source "fs/9p/Kconfig" 306 source "fs/9p/Kconfig"
423 307
424 endif # NETWORK_FILESYSTEMS 308 endif # NETWORK_FILESYSTEMS
425 309
426 source "fs/nls/Kconfig" 310 source "fs/nls/Kconfig"
427 source "fs/dlm/Kconfig" 311 source "fs/dlm/Kconfig"
428 source "fs/unicode/Kconfig" <<
429 <<
430 config IO_WQ <<
431 bool <<
432 312
433 endmenu 313 endmenu
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