1#
2# File system configuration
3#
4
5menu "File systems"
6
7# Use unaligned word dcache accesses
8config DCACHE_WORD_ACCESS
9       bool
10
11if BLOCK
12
13config FS_IOMAP
14	bool
15
16source "fs/ext2/Kconfig"
17source "fs/ext4/Kconfig"
18source "fs/jbd2/Kconfig"
19
20config FS_MBCACHE
21# Meta block cache for Extended Attributes (ext2/ext3/ext4)
22	tristate
23	default y if EXT2_FS=y && EXT2_FS_XATTR
24	default y if EXT4_FS=y
25	default m if EXT2_FS_XATTR || EXT4_FS
26
27source "fs/reiserfs/Kconfig"
28source "fs/jfs/Kconfig"
29
30source "fs/xfs/Kconfig"
31source "fs/gfs2/Kconfig"
32source "fs/ocfs2/Kconfig"
33source "fs/btrfs/Kconfig"
34source "fs/nilfs2/Kconfig"
35source "fs/f2fs/Kconfig"
36
37config FS_DAX
38	bool "Direct Access (DAX) support"
39	depends on MMU
40	depends on !(ARM || MIPS || SPARC)
41	select DEV_PAGEMAP_OPS if (ZONE_DEVICE && !FS_DAX_LIMITED)
42	select FS_IOMAP
43	select DAX
44	help
45	  Direct Access (DAX) can be used on memory-backed block devices.
46	  If the block device supports DAX and the filesystem supports DAX,
47	  then you can avoid using the pagecache to buffer I/Os.  Turning
48	  on this option will compile in support for DAX; you will need to
49	  mount the filesystem using the -o dax option.
50
51	  If you do not have a block device that is capable of using this,
52	  or if unsure, say N.  Saying Y will increase the size of the kernel
53	  by about 5kB.
54
55config FS_DAX_PMD
56	bool
57	default FS_DAX
58	depends on FS_DAX
59	depends on ZONE_DEVICE
60	depends on TRANSPARENT_HUGEPAGE
61
62# Selected by DAX drivers that do not expect filesystem DAX to support
63# get_user_pages() of DAX mappings. I.e. "limited" indicates no support
64# for fork() of processes with MAP_SHARED mappings or support for
65# direct-I/O to a DAX mapping.
66config FS_DAX_LIMITED
67	bool
68
69endif # BLOCK
70
71# Posix ACL utility routines
72#
73# Note: Posix ACLs can be implemented without these helpers.  Never use
74# this symbol for ifdefs in core code.
75#
76config FS_POSIX_ACL
77	def_bool n
78
79config EXPORTFS
80	tristate
81
82config EXPORTFS_BLOCK_OPS
83	bool "Enable filesystem export operations for block IO"
84	help
85	  This option enables the export operations for a filesystem to support
86	  external block IO.
87
88config FILE_LOCKING
89	bool "Enable POSIX file locking API" if EXPERT
90	default y
91	help
92	  This option enables standard file locking support, required
93          for filesystems like NFS and for the flock() system
94          call. Disabling this option saves about 11k.
95
96config MANDATORY_FILE_LOCKING
97	bool "Enable Mandatory file locking"
98	depends on FILE_LOCKING
99	default y
100	help
101	  This option enables files appropriately marked files on appropriely
102	  mounted filesystems to support mandatory locking.
103
104	  To the best of my knowledge this is dead code that no one cares about.
105
106source "fs/crypto/Kconfig"
107
108source "fs/notify/Kconfig"
109
110source "fs/quota/Kconfig"
111
112source "fs/autofs/Kconfig"
113source "fs/fuse/Kconfig"
114source "fs/overlayfs/Kconfig"
115
116menu "Caches"
117
118source "fs/fscache/Kconfig"
119source "fs/cachefiles/Kconfig"
120
121endmenu
122
123if BLOCK
124menu "CD-ROM/DVD Filesystems"
125
126source "fs/isofs/Kconfig"
127source "fs/udf/Kconfig"
128
129endmenu
130endif # BLOCK
131
132if BLOCK
133menu "DOS/FAT/NT Filesystems"
134
135source "fs/fat/Kconfig"
136source "fs/ntfs/Kconfig"
137
138endmenu
139endif # BLOCK
140
141menu "Pseudo filesystems"
142
143source "fs/proc/Kconfig"
144source "fs/kernfs/Kconfig"
145source "fs/sysfs/Kconfig"
146
147config TMPFS
148	bool "Tmpfs virtual memory file system support (former shm fs)"
149	depends on SHMEM
150	help
151	  Tmpfs is a file system which keeps all files in virtual memory.
152
153	  Everything in tmpfs is temporary in the sense that no files will be
154	  created on your hard drive. The files live in memory and swap
155	  space. If you unmount a tmpfs instance, everything stored therein is
156	  lost.
157
158	  See <file:Documentation/filesystems/tmpfs.txt> for details.
159
160config TMPFS_POSIX_ACL
161	bool "Tmpfs POSIX Access Control Lists"
162	depends on TMPFS
163	select TMPFS_XATTR
164	select FS_POSIX_ACL
165	help
166	  POSIX Access Control Lists (ACLs) support additional access rights
167	  for users and groups beyond the standard owner/group/world scheme,
168	  and this option selects support for ACLs specifically for tmpfs
169	  filesystems.
170
171	  If you've selected TMPFS, it's possible that you'll also need
172	  this option as there are a number of Linux distros that require
173	  POSIX ACL support under /dev for certain features to work properly.
174	  For example, some distros need this feature for ALSA-related /dev
175	  files for sound to work properly.  In short, if you're not sure,
176	  say Y.
177
178config TMPFS_XATTR
179	bool "Tmpfs extended attributes"
180	depends on TMPFS
181	default n
182	help
183	  Extended attributes are name:value pairs associated with inodes by
184	  the kernel or by users (see the attr(5) manual page for details).
185
186	  Currently this enables support for the trusted.* and
187	  security.* namespaces.
188
189	  You need this for POSIX ACL support on tmpfs.
190
191	  If unsure, say N.
192
193config HUGETLBFS
194	bool "HugeTLB file system support"
195	depends on X86 || IA64 || SPARC64 || (S390 && 64BIT) || \
196		   SYS_SUPPORTS_HUGETLBFS || BROKEN
197	help
198	  hugetlbfs is a filesystem backing for HugeTLB pages, based on
199	  ramfs. For architectures that support it, say Y here and read
200	  <file:Documentation/admin-guide/mm/hugetlbpage.rst> for details.
201
202	  If unsure, say N.
203
204config HUGETLB_PAGE
205	def_bool HUGETLBFS
206
207config MEMFD_CREATE
208	def_bool TMPFS || HUGETLBFS
209
210config ARCH_HAS_GIGANTIC_PAGE
211	bool
212
213source "fs/configfs/Kconfig"
214source "fs/efivarfs/Kconfig"
215
216endmenu
217
218menuconfig MISC_FILESYSTEMS
219	bool "Miscellaneous filesystems"
220	default y
221	---help---
222	  Say Y here to get to see options for various miscellaneous
223	  filesystems, such as filesystems that came from other
224	  operating systems.
225
226	  This option alone does not add any kernel code.
227
228	  If you say N, all options in this submenu will be skipped and
229	  disabled; if unsure, say Y here.
230
231if MISC_FILESYSTEMS
232
233source "fs/orangefs/Kconfig"
234source "fs/adfs/Kconfig"
235source "fs/affs/Kconfig"
236source "fs/ecryptfs/Kconfig"
237source "fs/hfs/Kconfig"
238source "fs/hfsplus/Kconfig"
239source "fs/befs/Kconfig"
240source "fs/bfs/Kconfig"
241source "fs/efs/Kconfig"
242source "fs/jffs2/Kconfig"
243# UBIFS File system configuration
244source "fs/ubifs/Kconfig"
245source "fs/cramfs/Kconfig"
246source "fs/squashfs/Kconfig"
247source "fs/freevxfs/Kconfig"
248source "fs/minix/Kconfig"
249source "fs/omfs/Kconfig"
250source "fs/hpfs/Kconfig"
251source "fs/qnx4/Kconfig"
252source "fs/qnx6/Kconfig"
253source "fs/romfs/Kconfig"
254source "fs/pstore/Kconfig"
255source "fs/sysv/Kconfig"
256source "fs/ufs/Kconfig"
257source "fs/exofs/Kconfig"
258
259endif # MISC_FILESYSTEMS
260
261source "fs/exofs/Kconfig.ore"
262
263menuconfig NETWORK_FILESYSTEMS
264	bool "Network File Systems"
265	default y
266	depends on NET
267	---help---
268	  Say Y here to get to see options for network filesystems and
269	  filesystem-related networking code, such as NFS daemon and
270	  RPCSEC security modules.
271
272	  This option alone does not add any kernel code.
273
274	  If you say N, all options in this submenu will be skipped and
275	  disabled; if unsure, say Y here.
276
277if NETWORK_FILESYSTEMS
278
279source "fs/nfs/Kconfig"
280source "fs/nfsd/Kconfig"
281
282config GRACE_PERIOD
283	tristate
284
285config LOCKD
286	tristate
287	depends on FILE_LOCKING
288	select GRACE_PERIOD
289
290config LOCKD_V4
291	bool
292	depends on NFSD_V3 || NFS_V3
293	depends on FILE_LOCKING
294	default y
295
296config NFS_ACL_SUPPORT
297	tristate
298	select FS_POSIX_ACL
299
300config NFS_COMMON
301	bool
302	depends on NFSD || NFS_FS || LOCKD
303	default y
304
305source "net/sunrpc/Kconfig"
306source "fs/ceph/Kconfig"
307source "fs/cifs/Kconfig"
308source "fs/coda/Kconfig"
309source "fs/afs/Kconfig"
310source "fs/9p/Kconfig"
311
312endif # NETWORK_FILESYSTEMS
313
314source "fs/nls/Kconfig"
315source "fs/dlm/Kconfig"
316
317endmenu
318