xref: /openbmc/linux/fs/Kconfig (revision dc6a81c3) 
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/NT Filesystems"
144
145source "fs/fat/Kconfig"
146source "fs/ntfs/Kconfig"
147
148endmenu
149endif # BLOCK
150
151menu "Pseudo filesystems"
152
153source "fs/proc/Kconfig"
154source "fs/kernfs/Kconfig"
155source "fs/sysfs/Kconfig"
156
157config TMPFS
158	bool "Tmpfs virtual memory file system support (former shm fs)"
159	depends on SHMEM
160	help
161	  Tmpfs is a file system which keeps all files in virtual memory.
162
163	  Everything in tmpfs is temporary in the sense that no files will be
164	  created on your hard drive. The files live in memory and swap
165	  space. If you unmount a tmpfs instance, everything stored therein is
166	  lost.
167
168	  See <file:Documentation/filesystems/tmpfs.txt> for details.
169
170config TMPFS_POSIX_ACL
171	bool "Tmpfs POSIX Access Control Lists"
172	depends on TMPFS
173	select TMPFS_XATTR
174	select FS_POSIX_ACL
175	help
176	  POSIX Access Control Lists (ACLs) support additional access rights
177	  for users and groups beyond the standard owner/group/world scheme,
178	  and this option selects support for ACLs specifically for tmpfs
179	  filesystems.
180
181	  If you've selected TMPFS, it's possible that you'll also need
182	  this option as there are a number of Linux distros that require
183	  POSIX ACL support under /dev for certain features to work properly.
184	  For example, some distros need this feature for ALSA-related /dev
185	  files for sound to work properly.  In short, if you're not sure,
186	  say Y.
187
188config TMPFS_XATTR
189	bool "Tmpfs extended attributes"
190	depends on TMPFS
191	default n
192	help
193	  Extended attributes are name:value pairs associated with inodes by
194	  the kernel or by users (see the attr(5) manual page for details).
195
196	  Currently this enables support for the trusted.* and
197	  security.* namespaces.
198
199	  You need this for POSIX ACL support on tmpfs.
200
201	  If unsure, say N.
202
203config HUGETLBFS
204	bool "HugeTLB file system support"
205	depends on X86 || IA64 || SPARC64 || (S390 && 64BIT) || \
206		   SYS_SUPPORTS_HUGETLBFS || BROKEN
207	help
208	  hugetlbfs is a filesystem backing for HugeTLB pages, based on
209	  ramfs. For architectures that support it, say Y here and read
210	  <file:Documentation/admin-guide/mm/hugetlbpage.rst> for details.
211
212	  If unsure, say N.
213
214config HUGETLB_PAGE
215	def_bool HUGETLBFS
216
217config MEMFD_CREATE
218	def_bool TMPFS || HUGETLBFS
219
220config ARCH_HAS_GIGANTIC_PAGE
221	bool
222
223source "fs/configfs/Kconfig"
224source "fs/efivarfs/Kconfig"
225
226endmenu
227
228menuconfig MISC_FILESYSTEMS
229	bool "Miscellaneous filesystems"
230	default y
231	---help---
232	  Say Y here to get to see options for various miscellaneous
233	  filesystems, such as filesystems that came from other
234	  operating systems.
235
236	  This option alone does not add any kernel code.
237
238	  If you say N, all options in this submenu will be skipped and
239	  disabled; if unsure, say Y here.
240
241if MISC_FILESYSTEMS
242
243source "fs/orangefs/Kconfig"
244source "fs/adfs/Kconfig"
245source "fs/affs/Kconfig"
246source "fs/ecryptfs/Kconfig"
247source "fs/hfs/Kconfig"
248source "fs/hfsplus/Kconfig"
249source "fs/befs/Kconfig"
250source "fs/bfs/Kconfig"
251source "fs/efs/Kconfig"
252source "fs/jffs2/Kconfig"
253# UBIFS File system configuration
254source "fs/ubifs/Kconfig"
255source "fs/cramfs/Kconfig"
256source "fs/squashfs/Kconfig"
257source "fs/freevxfs/Kconfig"
258source "fs/minix/Kconfig"
259source "fs/omfs/Kconfig"
260source "fs/hpfs/Kconfig"
261source "fs/qnx4/Kconfig"
262source "fs/qnx6/Kconfig"
263source "fs/romfs/Kconfig"
264source "fs/pstore/Kconfig"
265source "fs/sysv/Kconfig"
266source "fs/ufs/Kconfig"
267source "fs/erofs/Kconfig"
268source "fs/vboxsf/Kconfig"
269
270endif # MISC_FILESYSTEMS
271
272menuconfig NETWORK_FILESYSTEMS
273	bool "Network File Systems"
274	default y
275	depends on NET
276	---help---
277	  Say Y here to get to see options for network filesystems and
278	  filesystem-related networking code, such as NFS daemon and
279	  RPCSEC security modules.
280
281	  This option alone does not add any kernel code.
282
283	  If you say N, all options in this submenu will be skipped and
284	  disabled; if unsure, say Y here.
285
286if NETWORK_FILESYSTEMS
287
288source "fs/nfs/Kconfig"
289source "fs/nfsd/Kconfig"
290
291config GRACE_PERIOD
292	tristate
293
294config LOCKD
295	tristate
296	depends on FILE_LOCKING
297	select GRACE_PERIOD
298
299config LOCKD_V4
300	bool
301	depends on NFSD_V3 || NFS_V3
302	depends on FILE_LOCKING
303	default y
304
305config NFS_ACL_SUPPORT
306	tristate
307	select FS_POSIX_ACL
308
309config NFS_COMMON
310	bool
311	depends on NFSD || NFS_FS || LOCKD
312	default y
313
314source "net/sunrpc/Kconfig"
315source "fs/ceph/Kconfig"
316source "fs/cifs/Kconfig"
317source "fs/coda/Kconfig"
318source "fs/afs/Kconfig"
319source "fs/9p/Kconfig"
320
321endif # NETWORK_FILESYSTEMS
322
323source "fs/nls/Kconfig"
324source "fs/dlm/Kconfig"
325source "fs/unicode/Kconfig"
326
327config IO_WQ
328	bool
329
330endmenu
331