xref: /openbmc/linux/fs/Kconfig (revision 74be2d3b) 
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/fscache/Kconfig"
129source "fs/cachefiles/Kconfig"
130
131endmenu
132
133if BLOCK
134menu "CD-ROM/DVD Filesystems"
135
136source "fs/isofs/Kconfig"
137source "fs/udf/Kconfig"
138
139endmenu
140endif # BLOCK
141
142if BLOCK
143menu "DOS/FAT/EXFAT/NT Filesystems"
144
145source "fs/fat/Kconfig"
146source "fs/exfat/Kconfig"
147source "fs/ntfs/Kconfig"
148
149endmenu
150endif # BLOCK
151
152menu "Pseudo filesystems"
153
154source "fs/proc/Kconfig"
155source "fs/kernfs/Kconfig"
156source "fs/sysfs/Kconfig"
157
158config TMPFS
159	bool "Tmpfs virtual memory file system support (former shm fs)"
160	depends on SHMEM
161	help
162	  Tmpfs is a file system which keeps all files in virtual memory.
163
164	  Everything in tmpfs is temporary in the sense that no files will be
165	  created on your hard drive. The files live in memory and swap
166	  space. If you unmount a tmpfs instance, everything stored therein is
167	  lost.
168
169	  See <file:Documentation/filesystems/tmpfs.rst> for details.
170
171config TMPFS_POSIX_ACL
172	bool "Tmpfs POSIX Access Control Lists"
173	depends on TMPFS
174	select TMPFS_XATTR
175	select FS_POSIX_ACL
176	help
177	  POSIX Access Control Lists (ACLs) support additional access rights
178	  for users and groups beyond the standard owner/group/world scheme,
179	  and this option selects support for ACLs specifically for tmpfs
180	  filesystems.
181
182	  If you've selected TMPFS, it's possible that you'll also need
183	  this option as there are a number of Linux distros that require
184	  POSIX ACL support under /dev for certain features to work properly.
185	  For example, some distros need this feature for ALSA-related /dev
186	  files for sound to work properly.  In short, if you're not sure,
187	  say Y.
188
189config TMPFS_XATTR
190	bool "Tmpfs extended attributes"
191	depends on TMPFS
192	default n
193	help
194	  Extended attributes are name:value pairs associated with inodes by
195	  the kernel or by users (see the attr(5) manual page for details).
196
197	  Currently this enables support for the trusted.* and
198	  security.* namespaces.
199
200	  You need this for POSIX ACL support on tmpfs.
201
202	  If unsure, say N.
203
204config HUGETLBFS
205	bool "HugeTLB file system support"
206	depends on X86 || IA64 || SPARC64 || (S390 && 64BIT) || \
207		   SYS_SUPPORTS_HUGETLBFS || BROKEN
208	help
209	  hugetlbfs is a filesystem backing for HugeTLB pages, based on
210	  ramfs. For architectures that support it, say Y here and read
211	  <file:Documentation/admin-guide/mm/hugetlbpage.rst> for details.
212
213	  If unsure, say N.
214
215config HUGETLB_PAGE
216	def_bool HUGETLBFS
217
218config MEMFD_CREATE
219	def_bool TMPFS || HUGETLBFS
220
221config ARCH_HAS_GIGANTIC_PAGE
222	bool
223
224source "fs/configfs/Kconfig"
225source "fs/efivarfs/Kconfig"
226
227endmenu
228
229menuconfig MISC_FILESYSTEMS
230	bool "Miscellaneous filesystems"
231	default y
232	help
233	  Say Y here to get to see options for various miscellaneous
234	  filesystems, such as filesystems that came from other
235	  operating systems.
236
237	  This option alone does not add any kernel code.
238
239	  If you say N, all options in this submenu will be skipped and
240	  disabled; if unsure, say Y here.
241
242if MISC_FILESYSTEMS
243
244source "fs/orangefs/Kconfig"
245source "fs/adfs/Kconfig"
246source "fs/affs/Kconfig"
247source "fs/ecryptfs/Kconfig"
248source "fs/hfs/Kconfig"
249source "fs/hfsplus/Kconfig"
250source "fs/befs/Kconfig"
251source "fs/bfs/Kconfig"
252source "fs/efs/Kconfig"
253source "fs/jffs2/Kconfig"
254# UBIFS File system configuration
255source "fs/ubifs/Kconfig"
256source "fs/cramfs/Kconfig"
257source "fs/squashfs/Kconfig"
258source "fs/freevxfs/Kconfig"
259source "fs/minix/Kconfig"
260source "fs/omfs/Kconfig"
261source "fs/hpfs/Kconfig"
262source "fs/qnx4/Kconfig"
263source "fs/qnx6/Kconfig"
264source "fs/romfs/Kconfig"
265source "fs/pstore/Kconfig"
266source "fs/sysv/Kconfig"
267source "fs/ufs/Kconfig"
268source "fs/erofs/Kconfig"
269source "fs/vboxsf/Kconfig"
270
271endif # MISC_FILESYSTEMS
272
273menuconfig NETWORK_FILESYSTEMS
274	bool "Network File Systems"
275	default y
276	depends on NET
277	help
278	  Say Y here to get to see options for network filesystems and
279	  filesystem-related networking code, such as NFS daemon and
280	  RPCSEC security modules.
281
282	  This option alone does not add any kernel code.
283
284	  If you say N, all options in this submenu will be skipped and
285	  disabled; if unsure, say Y here.
286
287if NETWORK_FILESYSTEMS
288
289source "fs/nfs/Kconfig"
290source "fs/nfsd/Kconfig"
291
292config GRACE_PERIOD
293	tristate
294
295config LOCKD
296	tristate
297	depends on FILE_LOCKING
298	select GRACE_PERIOD
299
300config LOCKD_V4
301	bool
302	depends on NFSD_V3 || NFS_V3
303	depends on FILE_LOCKING
304	default y
305
306config NFS_ACL_SUPPORT
307	tristate
308	select FS_POSIX_ACL
309
310config NFS_COMMON
311	bool
312	depends on NFSD || NFS_FS || LOCKD
313	default y
314
315source "net/sunrpc/Kconfig"
316source "fs/ceph/Kconfig"
317source "fs/cifs/Kconfig"
318source "fs/coda/Kconfig"
319source "fs/afs/Kconfig"
320source "fs/9p/Kconfig"
321
322endif # NETWORK_FILESYSTEMS
323
324source "fs/nls/Kconfig"
325source "fs/dlm/Kconfig"
326source "fs/unicode/Kconfig"
327
328config IO_WQ
329	bool
330
331endmenu
332