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