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1#
2# File system configuration
3#
4
5menu "File systems"
6
7if BLOCK
8
9source "fs/ext2/Kconfig"
10source "fs/ext3/Kconfig"
11source "fs/ext4/Kconfig"
12
13config FS_XIP
14# execute in place
15 bool
16 depends on EXT2_FS_XIP
17 default y
18
19source "fs/jbd/Kconfig"
20source "fs/jbd2/Kconfig"
21
22config FS_MBCACHE
23# Meta block cache for Extended Attributes (ext2/ext3/ext4)
24 tristate
25 default y if EXT2_FS=y && EXT2_FS_XATTR
26 default y if EXT3_FS=y && EXT3_FS_XATTR
27 default y if EXT4_FS=y && EXT4_FS_XATTR
28 default m if EXT2_FS_XATTR || EXT3_FS_XATTR || EXT4_FS_XATTR
29
30source "fs/reiserfs/Kconfig"
31source "fs/jfs/Kconfig"
32
33source "fs/xfs/Kconfig"
34source "fs/gfs2/Kconfig"
35source "fs/ocfs2/Kconfig"
36source "fs/btrfs/Kconfig"
37source "fs/nilfs2/Kconfig"
38
39endif # BLOCK
40
41# Posix ACL utility routines
42#
43# Note: Posix ACLs can be implemented without these helpers. Never use
44# this symbol for ifdefs in core code.
45#
46config FS_POSIX_ACL
47 def_bool n
48
49config EXPORTFS
50 tristate
51
52config FILE_LOCKING
53 bool "Enable POSIX file locking API" if EXPERT
54 default y
55 help
56 This option enables standard file locking support, required
57 for filesystems like NFS and for the flock() system
58 call. Disabling this option saves about 11k.
59
60source "fs/notify/Kconfig"
61
62source "fs/quota/Kconfig"
63
64source "fs/autofs4/Kconfig"
65source "fs/fuse/Kconfig"
66
67config CUSE
68 tristate "Character device in Userspace support"
69 depends on FUSE_FS
70 help
71 This FUSE extension allows character devices to be
72 implemented in userspace.
73
74 If you want to develop or use userspace character device
75 based on CUSE, answer Y or M.
76
77config GENERIC_ACL
78 bool
79 select FS_POSIX_ACL
80
81menu "Caches"
82
83source "fs/fscache/Kconfig"
84source "fs/cachefiles/Kconfig"
85
86endmenu
87
88if BLOCK
89menu "CD-ROM/DVD Filesystems"
90
91source "fs/isofs/Kconfig"
92source "fs/udf/Kconfig"
93
94endmenu
95endif # BLOCK
96
97if BLOCK
98menu "DOS/FAT/NT Filesystems"
99
100source "fs/fat/Kconfig"
101source "fs/ntfs/Kconfig"
102
103endmenu
104endif # BLOCK
105
106menu "Pseudo filesystems"
107
108source "fs/proc/Kconfig"
109source "fs/sysfs/Kconfig"
110
111config TMPFS
112 bool "Virtual memory file system support (former shm fs)"
113 depends on SHMEM
114 help
115 Tmpfs is a file system which keeps all files in virtual memory.
116
117 Everything in tmpfs is temporary in the sense that no files will be
118 created on your hard drive. The files live in memory and swap
119 space. If you unmount a tmpfs instance, everything stored therein is
120 lost.
121
122 See <file:Documentation/filesystems/tmpfs.txt> for details.
123
124config TMPFS_POSIX_ACL
125 bool "Tmpfs POSIX Access Control Lists"
126 depends on TMPFS
127 select TMPFS_XATTR
128 select GENERIC_ACL
129 help
130 POSIX Access Control Lists (ACLs) support additional access rights
131 for users and groups beyond the standard owner/group/world scheme,
132 and this option selects support for ACLs specifically for tmpfs
133 filesystems.
134
135 If you've selected TMPFS, it's possible that you'll also need
136 this option as there are a number of Linux distros that require
137 POSIX ACL support under /dev for certain features to work properly.
138 For example, some distros need this feature for ALSA-related /dev
139 files for sound to work properly. In short, if you're not sure,
140 say Y.
141
142 To learn more about Access Control Lists, visit the POSIX ACLs for
143 Linux website <http://acl.bestbits.at/>.
144
145config TMPFS_XATTR
146 bool "Tmpfs extended attributes"
147 depends on TMPFS
148 default n
149 help
150 Extended attributes are name:value pairs associated with inodes by
151 the kernel or by users (see the attr(5) manual page, or visit
152 <http://acl.bestbits.at/> for details).
153
154 Currently this enables support for the trusted.* and
155 security.* namespaces.
156
157 You need this for POSIX ACL support on tmpfs.
158
159 If unsure, say N.
160
161config HUGETLBFS
162 bool "HugeTLB file system support"
163 depends on X86 || IA64 || SPARC64 || (S390 && 64BIT) || \
164 SYS_SUPPORTS_HUGETLBFS || BROKEN
165 help
166 hugetlbfs is a filesystem backing for HugeTLB pages, based on
167 ramfs. For architectures that support it, say Y here and read
168 <file:Documentation/vm/hugetlbpage.txt> for details.
169
170 If unsure, say N.
171
172config HUGETLB_PAGE
173 def_bool HUGETLBFS
174
175source "fs/configfs/Kconfig"
176
177endmenu
178
179menuconfig MISC_FILESYSTEMS
180 bool "Miscellaneous filesystems"
181 default y
182 ---help---
183 Say Y here to get to see options for various miscellaneous
184 filesystems, such as filesystems that came from other
185 operating systems.
186
187 This option alone does not add any kernel code.
188
189 If you say N, all options in this submenu will be skipped and
190 disabled; if unsure, say Y here.
191
192if MISC_FILESYSTEMS
193
194source "fs/adfs/Kconfig"
195source "fs/affs/Kconfig"
196source "fs/ecryptfs/Kconfig"
197source "fs/hfs/Kconfig"
198source "fs/hfsplus/Kconfig"
199source "fs/befs/Kconfig"
200source "fs/bfs/Kconfig"
201source "fs/efs/Kconfig"
202source "fs/jffs2/Kconfig"
203# UBIFS File system configuration
204source "fs/ubifs/Kconfig"
205source "fs/logfs/Kconfig"
206source "fs/cramfs/Kconfig"
207source "fs/squashfs/Kconfig"
208source "fs/freevxfs/Kconfig"
209source "fs/minix/Kconfig"
210source "fs/omfs/Kconfig"
211source "fs/hpfs/Kconfig"
212source "fs/qnx4/Kconfig"
213source "fs/romfs/Kconfig"
214source "fs/pstore/Kconfig"
215source "fs/sysv/Kconfig"
216source "fs/ufs/Kconfig"
217source "fs/exofs/Kconfig"
218
219endif # MISC_FILESYSTEMS
220
221menuconfig NETWORK_FILESYSTEMS
222 bool "Network File Systems"
223 default y
224 depends on NET
225 ---help---
226 Say Y here to get to see options for network filesystems and
227 filesystem-related networking code, such as NFS daemon and
228 RPCSEC security modules.
229
230 This option alone does not add any kernel code.
231
232 If you say N, all options in this submenu will be skipped and
233 disabled; if unsure, say Y here.
234
235if NETWORK_FILESYSTEMS
236
237source "fs/nfs/Kconfig"
238source "fs/nfsd/Kconfig"
239
240config LOCKD
241 tristate
242 depends on FILE_LOCKING
243
244config LOCKD_V4
245 bool
246 depends on NFSD_V3 || NFS_V3
247 depends on FILE_LOCKING
248 default y
249
250config NFS_ACL_SUPPORT
251 tristate
252 select FS_POSIX_ACL
253
254config NFS_COMMON
255 bool
256 depends on NFSD || NFS_FS
257 default y
258
259source "net/sunrpc/Kconfig"
260source "fs/ceph/Kconfig"
261source "fs/cifs/Kconfig"
262source "fs/ncpfs/Kconfig"
263source "fs/coda/Kconfig"
264source "fs/afs/Kconfig"
265source "fs/9p/Kconfig"
266
267endif # NETWORK_FILESYSTEMS
268
269if BLOCK
270menu "Partition Types"
271
272source "fs/partitions/Kconfig"
273
274endmenu
275endif
276
277source "fs/nls/Kconfig"
278source "fs/dlm/Kconfig"
279
280endmenu
1# SPDX-License-Identifier: GPL-2.0-only
2#
3# File system configuration
4#
5
6menu "File systems"
7
8# Use unaligned word dcache accesses
9config DCACHE_WORD_ACCESS
10 bool
11
12config VALIDATE_FS_PARSER
13 bool "Validate filesystem parameter description"
14 help
15 Enable this to perform validation of the parameter description for a
16 filesystem when it is registered.
17
18config FS_IOMAP
19 bool
20
21# Stackable filesystems
22config FS_STACK
23 bool
24
25config BUFFER_HEAD
26 bool
27
28# old blockdev_direct_IO implementation. Use iomap for new code instead
29config LEGACY_DIRECT_IO
30 depends on BUFFER_HEAD
31 bool
32
33if BLOCK
34
35source "fs/ext2/Kconfig"
36source "fs/ext4/Kconfig"
37source "fs/jbd2/Kconfig"
38
39config FS_MBCACHE
40# Meta block cache for Extended Attributes (ext2/ext3/ext4)
41 tristate
42 default y if EXT2_FS=y && EXT2_FS_XATTR
43 default y if EXT4_FS=y
44 default m if EXT2_FS_XATTR || EXT4_FS
45
46source "fs/reiserfs/Kconfig"
47source "fs/jfs/Kconfig"
48
49source "fs/xfs/Kconfig"
50source "fs/gfs2/Kconfig"
51source "fs/ocfs2/Kconfig"
52source "fs/btrfs/Kconfig"
53source "fs/nilfs2/Kconfig"
54source "fs/f2fs/Kconfig"
55source "fs/bcachefs/Kconfig"
56source "fs/zonefs/Kconfig"
57
58endif # BLOCK
59
60config FS_DAX
61 bool "File system based Direct Access (DAX) support"
62 depends on MMU
63 depends on !(ARM || MIPS || SPARC)
64 depends on ZONE_DEVICE || FS_DAX_LIMITED
65 select FS_IOMAP
66 select DAX
67 help
68 Direct Access (DAX) can be used on memory-backed block devices.
69 If the block device supports DAX and the filesystem supports DAX,
70 then you can avoid using the pagecache to buffer I/Os. Turning
71 on this option will compile in support for DAX.
72
73 For a DAX device to support file system access it needs to have
74 struct pages. For the nfit based NVDIMMs this can be enabled
75 using the ndctl utility:
76
77 # ndctl create-namespace --force --reconfig=namespace0.0 \
78 --mode=fsdax --map=mem
79
80 See the 'create-namespace' man page for details on the overhead of
81 --map=mem:
82 https://docs.pmem.io/ndctl-user-guide/ndctl-man-pages/ndctl-create-namespace
83
84 For ndctl to work CONFIG_DEV_DAX needs to be enabled as well. For most
85 file systems DAX support needs to be manually enabled globally or
86 per-inode using a mount option as well. See the file documentation in
87 Documentation/filesystems/dax.rst for details.
88
89 If you do not have a block device that is capable of using this,
90 or if unsure, say N. Saying Y will increase the size of the kernel
91 by about 5kB.
92
93config FS_DAX_PMD
94 bool
95 default FS_DAX
96 depends on FS_DAX
97 depends on ZONE_DEVICE
98 depends on TRANSPARENT_HUGEPAGE
99
100# Selected by DAX drivers that do not expect filesystem DAX to support
101# get_user_pages() of DAX mappings. I.e. "limited" indicates no support
102# for fork() of processes with MAP_SHARED mappings or support for
103# direct-I/O to a DAX mapping.
104config FS_DAX_LIMITED
105 bool
106
107# Posix ACL utility routines
108#
109# Note: Posix ACLs can be implemented without these helpers. Never use
110# this symbol for ifdefs in core code.
111#
112config FS_POSIX_ACL
113 def_bool n
114
115config EXPORTFS
116 tristate
117
118config EXPORTFS_BLOCK_OPS
119 bool "Enable filesystem export operations for block IO"
120 help
121 This option enables the export operations for a filesystem to support
122 external block IO.
123
124config FILE_LOCKING
125 bool "Enable POSIX file locking API" if EXPERT
126 default y
127 help
128 This option enables standard file locking support, required
129 for filesystems like NFS and for the flock() system
130 call. Disabling this option saves about 11k.
131
132source "fs/crypto/Kconfig"
133
134source "fs/verity/Kconfig"
135
136source "fs/notify/Kconfig"
137
138source "fs/quota/Kconfig"
139
140source "fs/autofs/Kconfig"
141source "fs/fuse/Kconfig"
142source "fs/overlayfs/Kconfig"
143
144menu "Caches"
145
146source "fs/netfs/Kconfig"
147source "fs/cachefiles/Kconfig"
148
149endmenu
150
151if BLOCK
152menu "CD-ROM/DVD Filesystems"
153
154source "fs/isofs/Kconfig"
155source "fs/udf/Kconfig"
156
157endmenu
158endif # BLOCK
159
160if BLOCK
161menu "DOS/FAT/EXFAT/NT Filesystems"
162
163source "fs/fat/Kconfig"
164source "fs/exfat/Kconfig"
165source "fs/ntfs/Kconfig"
166source "fs/ntfs3/Kconfig"
167
168endmenu
169endif # BLOCK
170
171menu "Pseudo filesystems"
172
173source "fs/proc/Kconfig"
174source "fs/kernfs/Kconfig"
175source "fs/sysfs/Kconfig"
176
177config TMPFS
178 bool "Tmpfs virtual memory file system support (former shm fs)"
179 depends on SHMEM
180 select MEMFD_CREATE
181 help
182 Tmpfs is a file system which keeps all files in virtual memory.
183
184 Everything in tmpfs is temporary in the sense that no files will be
185 created on your hard drive. The files live in memory and swap
186 space. If you unmount a tmpfs instance, everything stored therein is
187 lost.
188
189 See <file:Documentation/filesystems/tmpfs.rst> for details.
190
191config TMPFS_POSIX_ACL
192 bool "Tmpfs POSIX Access Control Lists"
193 depends on TMPFS
194 select TMPFS_XATTR
195 select FS_POSIX_ACL
196 help
197 POSIX Access Control Lists (ACLs) support additional access rights
198 for users and groups beyond the standard owner/group/world scheme,
199 and this option selects support for ACLs specifically for tmpfs
200 filesystems.
201
202 If you've selected TMPFS, it's possible that you'll also need
203 this option as there are a number of Linux distros that require
204 POSIX ACL support under /dev for certain features to work properly.
205 For example, some distros need this feature for ALSA-related /dev
206 files for sound to work properly. In short, if you're not sure,
207 say Y.
208
209config TMPFS_XATTR
210 bool "Tmpfs extended attributes"
211 depends on TMPFS
212 default n
213 help
214 Extended attributes are name:value pairs associated with inodes by
215 the kernel or by users (see the attr(5) manual page for details).
216
217 This enables support for the trusted.*, security.* and user.*
218 namespaces.
219
220 You need this for POSIX ACL support on tmpfs.
221
222 If unsure, say N.
223
224config TMPFS_INODE64
225 bool "Use 64-bit ino_t by default in tmpfs"
226 depends on TMPFS && 64BIT
227 default n
228 help
229 tmpfs has historically used only inode numbers as wide as an unsigned
230 int. In some cases this can cause wraparound, potentially resulting
231 in multiple files with the same inode number on a single device. This
232 option makes tmpfs use the full width of ino_t by default, without
233 needing to specify the inode64 option when mounting.
234
235 But if a long-lived tmpfs is to be accessed by 32-bit applications so
236 ancient that opening a file larger than 2GiB fails with EINVAL, then
237 the INODE64 config option and inode64 mount option risk operations
238 failing with EOVERFLOW once 33-bit inode numbers are reached.
239
240 To override this configured default, use the inode32 or inode64
241 option when mounting.
242
243 If unsure, say N.
244
245config TMPFS_QUOTA
246 bool "Tmpfs quota support"
247 depends on TMPFS
248 select QUOTA
249 help
250 Quota support allows to set per user and group limits for tmpfs
251 usage. Say Y to enable quota support. Once enabled you can control
252 user and group quota enforcement with quota, usrquota and grpquota
253 mount options.
254
255 If unsure, say N.
256
257config ARCH_SUPPORTS_HUGETLBFS
258 def_bool n
259
260menuconfig HUGETLBFS
261 bool "HugeTLB file system support"
262 depends on X86 || SPARC64 || ARCH_SUPPORTS_HUGETLBFS || BROKEN
263 depends on (SYSFS || SYSCTL)
264 select MEMFD_CREATE
265 help
266 hugetlbfs is a filesystem backing for HugeTLB pages, based on
267 ramfs. For architectures that support it, say Y here and read
268 <file:Documentation/admin-guide/mm/hugetlbpage.rst> for details.
269
270 If unsure, say N.
271
272if HUGETLBFS
273config HUGETLB_PAGE_OPTIMIZE_VMEMMAP_DEFAULT_ON
274 bool "HugeTLB Vmemmap Optimization (HVO) defaults to on"
275 default n
276 depends on HUGETLB_PAGE_OPTIMIZE_VMEMMAP
277 help
278 The HugeTLB Vmemmap Optimization (HVO) defaults to off. Say Y here to
279 enable HVO by default. It can be disabled via hugetlb_free_vmemmap=off
280 (boot command line) or hugetlb_optimize_vmemmap (sysctl).
281endif # HUGETLBFS
282
283config HUGETLB_PAGE
284 def_bool HUGETLBFS
285 select XARRAY_MULTI
286
287config HUGETLB_PAGE_OPTIMIZE_VMEMMAP
288 def_bool HUGETLB_PAGE
289 depends on ARCH_WANT_OPTIMIZE_HUGETLB_VMEMMAP
290 depends on SPARSEMEM_VMEMMAP
291
292config ARCH_HAS_GIGANTIC_PAGE
293 bool
294
295source "fs/configfs/Kconfig"
296source "fs/efivarfs/Kconfig"
297
298endmenu
299
300menuconfig MISC_FILESYSTEMS
301 bool "Miscellaneous filesystems"
302 default y
303 help
304 Say Y here to get to see options for various miscellaneous
305 filesystems, such as filesystems that came from other
306 operating systems.
307
308 This option alone does not add any kernel code.
309
310 If you say N, all options in this submenu will be skipped and
311 disabled; if unsure, say Y here.
312
313if MISC_FILESYSTEMS
314
315source "fs/orangefs/Kconfig"
316source "fs/adfs/Kconfig"
317source "fs/affs/Kconfig"
318source "fs/ecryptfs/Kconfig"
319source "fs/hfs/Kconfig"
320source "fs/hfsplus/Kconfig"
321source "fs/befs/Kconfig"
322source "fs/bfs/Kconfig"
323source "fs/efs/Kconfig"
324source "fs/jffs2/Kconfig"
325# UBIFS File system configuration
326source "fs/ubifs/Kconfig"
327source "fs/cramfs/Kconfig"
328source "fs/squashfs/Kconfig"
329source "fs/freevxfs/Kconfig"
330source "fs/minix/Kconfig"
331source "fs/omfs/Kconfig"
332source "fs/hpfs/Kconfig"
333source "fs/qnx4/Kconfig"
334source "fs/qnx6/Kconfig"
335source "fs/romfs/Kconfig"
336source "fs/pstore/Kconfig"
337source "fs/sysv/Kconfig"
338source "fs/ufs/Kconfig"
339source "fs/erofs/Kconfig"
340source "fs/vboxsf/Kconfig"
341
342endif # MISC_FILESYSTEMS
343
344menuconfig NETWORK_FILESYSTEMS
345 bool "Network File Systems"
346 default y
347 depends on NET
348 help
349 Say Y here to get to see options for network filesystems and
350 filesystem-related networking code, such as NFS daemon and
351 RPCSEC security modules.
352
353 This option alone does not add any kernel code.
354
355 If you say N, all options in this submenu will be skipped and
356 disabled; if unsure, say Y here.
357
358if NETWORK_FILESYSTEMS
359
360source "fs/nfs/Kconfig"
361source "fs/nfsd/Kconfig"
362
363config GRACE_PERIOD
364 tristate
365
366config LOCKD
367 tristate
368 depends on FILE_LOCKING
369 select GRACE_PERIOD
370
371config LOCKD_V4
372 bool
373 depends on NFSD || NFS_V3
374 depends on FILE_LOCKING
375 default y
376
377config NFS_ACL_SUPPORT
378 tristate
379 select FS_POSIX_ACL
380
381config NFS_COMMON
382 bool
383 depends on NFSD || NFS_FS || LOCKD
384 default y
385
386config NFS_V4_2_SSC_HELPER
387 bool
388 default y if NFS_V4_2
389
390source "net/sunrpc/Kconfig"
391source "fs/ceph/Kconfig"
392
393source "fs/smb/Kconfig"
394source "fs/coda/Kconfig"
395source "fs/afs/Kconfig"
396source "fs/9p/Kconfig"
397
398endif # NETWORK_FILESYSTEMS
399
400source "fs/nls/Kconfig"
401source "fs/dlm/Kconfig"
402source "fs/unicode/Kconfig"
403
404config IO_WQ
405 bool
406
407endmenu