Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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
18if BLOCK
19
20config FS_IOMAP
21 bool
22
23source "fs/ext2/Kconfig"
24source "fs/ext4/Kconfig"
25source "fs/jbd2/Kconfig"
26
27config FS_MBCACHE
28# Meta block cache for Extended Attributes (ext2/ext3/ext4)
29 tristate
30 default y if EXT2_FS=y && EXT2_FS_XATTR
31 default y if EXT4_FS=y
32 default m if EXT2_FS_XATTR || EXT4_FS
33
34source "fs/reiserfs/Kconfig"
35source "fs/jfs/Kconfig"
36
37source "fs/xfs/Kconfig"
38source "fs/gfs2/Kconfig"
39source "fs/ocfs2/Kconfig"
40source "fs/btrfs/Kconfig"
41source "fs/nilfs2/Kconfig"
42source "fs/f2fs/Kconfig"
43source "fs/zonefs/Kconfig"
44
45config FS_DAX
46 bool "Direct Access (DAX) support"
47 depends on MMU
48 depends on !(ARM || MIPS || SPARC)
49 select DEV_PAGEMAP_OPS if (ZONE_DEVICE && !FS_DAX_LIMITED)
50 select FS_IOMAP
51 select DAX
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
63config FS_DAX_PMD
64 bool
65 default FS_DAX
66 depends on FS_DAX
67 depends on ZONE_DEVICE
68 depends on TRANSPARENT_HUGEPAGE
69
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
77endif # BLOCK
78
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
87config EXPORTFS
88 tristate
89
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
96config FILE_LOCKING
97 bool "Enable POSIX file locking API" if EXPERT
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
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
114source "fs/crypto/Kconfig"
115
116source "fs/verity/Kconfig"
117
118source "fs/notify/Kconfig"
119
120source "fs/quota/Kconfig"
121
122source "fs/autofs/Kconfig"
123source "fs/fuse/Kconfig"
124source "fs/overlayfs/Kconfig"
125
126menu "Caches"
127
128source "fs/netfs/Kconfig"
129source "fs/fscache/Kconfig"
130source "fs/cachefiles/Kconfig"
131
132endmenu
133
134if BLOCK
135menu "CD-ROM/DVD Filesystems"
136
137source "fs/isofs/Kconfig"
138source "fs/udf/Kconfig"
139
140endmenu
141endif # BLOCK
142
143if BLOCK
144menu "DOS/FAT/EXFAT/NT Filesystems"
145
146source "fs/fat/Kconfig"
147source "fs/exfat/Kconfig"
148source "fs/ntfs/Kconfig"
149
150endmenu
151endif # BLOCK
152
153menu "Pseudo filesystems"
154
155source "fs/proc/Kconfig"
156source "fs/kernfs/Kconfig"
157source "fs/sysfs/Kconfig"
158
159config TMPFS
160 bool "Tmpfs virtual memory file system support (former shm fs)"
161 depends on SHMEM
162 help
163 Tmpfs is a file system which keeps all files in virtual memory.
164
165 Everything in tmpfs is temporary in the sense that no files will be
166 created on your hard drive. The files live in memory and swap
167 space. If you unmount a tmpfs instance, everything stored therein is
168 lost.
169
170 See <file:Documentation/filesystems/tmpfs.rst> for details.
171
172config TMPFS_POSIX_ACL
173 bool "Tmpfs POSIX Access Control Lists"
174 depends on TMPFS
175 select TMPFS_XATTR
176 select FS_POSIX_ACL
177 help
178 POSIX Access Control Lists (ACLs) support additional access rights
179 for users and groups beyond the standard owner/group/world scheme,
180 and this option selects support for ACLs specifically for tmpfs
181 filesystems.
182
183 If you've selected TMPFS, it's possible that you'll also need
184 this option as there are a number of Linux distros that require
185 POSIX ACL support under /dev for certain features to work properly.
186 For example, some distros need this feature for ALSA-related /dev
187 files for sound to work properly. In short, if you're not sure,
188 say Y.
189
190config TMPFS_XATTR
191 bool "Tmpfs extended attributes"
192 depends on TMPFS
193 default n
194 help
195 Extended attributes are name:value pairs associated with inodes by
196 the kernel or by users (see the attr(5) manual page for details).
197
198 Currently this enables support for the trusted.* and
199 security.* namespaces.
200
201 You need this for POSIX ACL support on tmpfs.
202
203 If unsure, say N.
204
205config TMPFS_INODE64
206 bool "Use 64-bit ino_t by default in tmpfs"
207 depends on TMPFS && 64BIT
208 default n
209 help
210 tmpfs has historically used only inode numbers as wide as an unsigned
211 int. In some cases this can cause wraparound, potentially resulting
212 in multiple files with the same inode number on a single device. This
213 option makes tmpfs use the full width of ino_t by default, without
214 needing to specify the inode64 option when mounting.
215
216 But if a long-lived tmpfs is to be accessed by 32-bit applications so
217 ancient that opening a file larger than 2GiB fails with EINVAL, then
218 the INODE64 config option and inode64 mount option risk operations
219 failing with EOVERFLOW once 33-bit inode numbers are reached.
220
221 To override this configured default, use the inode32 or inode64
222 option when mounting.
223
224 If unsure, say N.
225
226config ARCH_SUPPORTS_HUGETLBFS
227 def_bool n
228
229config HUGETLBFS
230 bool "HugeTLB file system support"
231 depends on X86 || IA64 || SPARC64 || (S390 && 64BIT) || \
232 ARCH_SUPPORTS_HUGETLBFS || BROKEN
233 help
234 hugetlbfs is a filesystem backing for HugeTLB pages, based on
235 ramfs. For architectures that support it, say Y here and read
236 <file:Documentation/admin-guide/mm/hugetlbpage.rst> for details.
237
238 If unsure, say N.
239
240config HUGETLB_PAGE
241 def_bool HUGETLBFS
242
243config MEMFD_CREATE
244 def_bool TMPFS || HUGETLBFS
245
246config ARCH_HAS_GIGANTIC_PAGE
247 bool
248
249source "fs/configfs/Kconfig"
250source "fs/efivarfs/Kconfig"
251
252endmenu
253
254menuconfig MISC_FILESYSTEMS
255 bool "Miscellaneous filesystems"
256 default y
257 help
258 Say Y here to get to see options for various miscellaneous
259 filesystems, such as filesystems that came from other
260 operating systems.
261
262 This option alone does not add any kernel code.
263
264 If you say N, all options in this submenu will be skipped and
265 disabled; if unsure, say Y here.
266
267if MISC_FILESYSTEMS
268
269source "fs/orangefs/Kconfig"
270source "fs/adfs/Kconfig"
271source "fs/affs/Kconfig"
272source "fs/ecryptfs/Kconfig"
273source "fs/hfs/Kconfig"
274source "fs/hfsplus/Kconfig"
275source "fs/befs/Kconfig"
276source "fs/bfs/Kconfig"
277source "fs/efs/Kconfig"
278source "fs/jffs2/Kconfig"
279# UBIFS File system configuration
280source "fs/ubifs/Kconfig"
281source "fs/cramfs/Kconfig"
282source "fs/squashfs/Kconfig"
283source "fs/freevxfs/Kconfig"
284source "fs/minix/Kconfig"
285source "fs/omfs/Kconfig"
286source "fs/hpfs/Kconfig"
287source "fs/qnx4/Kconfig"
288source "fs/qnx6/Kconfig"
289source "fs/romfs/Kconfig"
290source "fs/pstore/Kconfig"
291source "fs/sysv/Kconfig"
292source "fs/ufs/Kconfig"
293source "fs/erofs/Kconfig"
294source "fs/vboxsf/Kconfig"
295
296endif # MISC_FILESYSTEMS
297
298menuconfig NETWORK_FILESYSTEMS
299 bool "Network File Systems"
300 default y
301 depends on NET
302 help
303 Say Y here to get to see options for network filesystems and
304 filesystem-related networking code, such as NFS daemon and
305 RPCSEC security modules.
306
307 This option alone does not add any kernel code.
308
309 If you say N, all options in this submenu will be skipped and
310 disabled; if unsure, say Y here.
311
312if NETWORK_FILESYSTEMS
313
314source "fs/nfs/Kconfig"
315source "fs/nfsd/Kconfig"
316
317config GRACE_PERIOD
318 tristate
319
320config LOCKD
321 tristate
322 depends on FILE_LOCKING
323 select GRACE_PERIOD
324
325config LOCKD_V4
326 bool
327 depends on NFSD_V3 || NFS_V3
328 depends on FILE_LOCKING
329 default y
330
331config NFS_ACL_SUPPORT
332 tristate
333 select FS_POSIX_ACL
334
335config NFS_COMMON
336 bool
337 depends on NFSD || NFS_FS || LOCKD
338 default y
339
340config NFS_V4_2_SSC_HELPER
341 bool
342 default y if NFS_V4_2
343
344source "net/sunrpc/Kconfig"
345source "fs/ceph/Kconfig"
346source "fs/cifs/Kconfig"
347source "fs/coda/Kconfig"
348source "fs/afs/Kconfig"
349source "fs/9p/Kconfig"
350
351endif # NETWORK_FILESYSTEMS
352
353source "fs/nls/Kconfig"
354source "fs/dlm/Kconfig"
355source "fs/unicode/Kconfig"
356
357config IO_WQ
358 bool
359
360endmenu