1 # SPDX-License-Identifier: GPL-2.0-only
3 # File system configuration
8 # Use unaligned word dcache accesses
9 config DCACHE_WORD_ACCESS
12 config VALIDATE_FS_PARSER
13 bool "Validate filesystem parameter description"
15 Enable this to perform validation of the parameter description for a
16 filesystem when it is registered.
23 source "fs/ext2/Kconfig"
24 source "fs/ext4/Kconfig"
25 source "fs/jbd2/Kconfig"
28 # Meta block cache for Extended Attributes (ext2/ext3/ext4)
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
34 source "fs/reiserfs/Kconfig"
35 source "fs/jfs/Kconfig"
37 source "fs/xfs/Kconfig"
38 source "fs/gfs2/Kconfig"
39 source "fs/ocfs2/Kconfig"
40 source "fs/btrfs/Kconfig"
41 source "fs/nilfs2/Kconfig"
42 source "fs/f2fs/Kconfig"
43 source "fs/zonefs/Kconfig"
46 bool "Direct Access (DAX) support"
48 depends on !(ARM || MIPS || SPARC)
49 select DEV_PAGEMAP_OPS if (ZONE_DEVICE && !FS_DAX_LIMITED)
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.
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
67 depends on ZONE_DEVICE
68 depends on TRANSPARENT_HUGEPAGE
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.
79 # Posix ACL utility routines
81 # Note: Posix ACLs can be implemented without these helpers. Never use
82 # this symbol for ifdefs in core code.
90 config EXPORTFS_BLOCK_OPS
91 bool "Enable filesystem export operations for block IO"
93 This option enables the export operations for a filesystem to support
97 bool "Enable POSIX file locking API" if EXPERT
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.
104 config MANDATORY_FILE_LOCKING
105 bool "Enable Mandatory file locking"
106 depends on FILE_LOCKING
109 This option enables files appropriately marked files on appropriely
110 mounted filesystems to support mandatory locking.
112 To the best of my knowledge this is dead code that no one cares about.
114 source "fs/crypto/Kconfig"
116 source "fs/verity/Kconfig"
118 source "fs/notify/Kconfig"
120 source "fs/quota/Kconfig"
122 source "fs/autofs/Kconfig"
123 source "fs/fuse/Kconfig"
124 source "fs/overlayfs/Kconfig"
128 source "fs/fscache/Kconfig"
129 source "fs/cachefiles/Kconfig"
134 menu "CD-ROM/DVD Filesystems"
136 source "fs/isofs/Kconfig"
137 source "fs/udf/Kconfig"
143 menu "DOS/FAT/EXFAT/NT Filesystems"
145 source "fs/fat/Kconfig"
146 source "fs/exfat/Kconfig"
147 source "fs/ntfs/Kconfig"
152 menu "Pseudo filesystems"
154 source "fs/proc/Kconfig"
155 source "fs/kernfs/Kconfig"
156 source "fs/sysfs/Kconfig"
159 bool "Tmpfs virtual memory file system support (former shm fs)"
162 Tmpfs is a file system which keeps all files in virtual memory.
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
169 See <file:Documentation/filesystems/tmpfs.txt> for details.
171 config TMPFS_POSIX_ACL
172 bool "Tmpfs POSIX Access Control Lists"
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
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,
190 bool "Tmpfs extended attributes"
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).
197 Currently this enables support for the trusted.* and
198 security.* namespaces.
200 You need this for POSIX ACL support on tmpfs.
205 bool "HugeTLB file system support"
206 depends on X86 || IA64 || SPARC64 || (S390 && 64BIT) || \
207 SYS_SUPPORTS_HUGETLBFS || BROKEN
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.
219 def_bool TMPFS || HUGETLBFS
221 config ARCH_HAS_GIGANTIC_PAGE
224 source "fs/configfs/Kconfig"
225 source "fs/efivarfs/Kconfig"
229 menuconfig MISC_FILESYSTEMS
230 bool "Miscellaneous filesystems"
233 Say Y here to get to see options for various miscellaneous
234 filesystems, such as filesystems that came from other
237 This option alone does not add any kernel code.
239 If you say N, all options in this submenu will be skipped and
240 disabled; if unsure, say Y here.
244 source "fs/orangefs/Kconfig"
245 source "fs/adfs/Kconfig"
246 source "fs/affs/Kconfig"
247 source "fs/ecryptfs/Kconfig"
248 source "fs/hfs/Kconfig"
249 source "fs/hfsplus/Kconfig"
250 source "fs/befs/Kconfig"
251 source "fs/bfs/Kconfig"
252 source "fs/efs/Kconfig"
253 source "fs/jffs2/Kconfig"
254 # UBIFS File system configuration
255 source "fs/ubifs/Kconfig"
256 source "fs/cramfs/Kconfig"
257 source "fs/squashfs/Kconfig"
258 source "fs/freevxfs/Kconfig"
259 source "fs/minix/Kconfig"
260 source "fs/omfs/Kconfig"
261 source "fs/hpfs/Kconfig"
262 source "fs/qnx4/Kconfig"
263 source "fs/qnx6/Kconfig"
264 source "fs/romfs/Kconfig"
265 source "fs/pstore/Kconfig"
266 source "fs/sysv/Kconfig"
267 source "fs/ufs/Kconfig"
268 source "fs/erofs/Kconfig"
269 source "fs/vboxsf/Kconfig"
271 endif # MISC_FILESYSTEMS
273 menuconfig NETWORK_FILESYSTEMS
274 bool "Network File Systems"
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.
282 This option alone does not add any kernel code.
284 If you say N, all options in this submenu will be skipped and
285 disabled; if unsure, say Y here.
287 if NETWORK_FILESYSTEMS
289 source "fs/nfs/Kconfig"
290 source "fs/nfsd/Kconfig"
297 depends on FILE_LOCKING
302 depends on NFSD_V3 || NFS_V3
303 depends on FILE_LOCKING
306 config NFS_ACL_SUPPORT
312 depends on NFSD || NFS_FS || LOCKD
315 source "net/sunrpc/Kconfig"
316 source "fs/ceph/Kconfig"
317 source "fs/cifs/Kconfig"
318 source "fs/coda/Kconfig"
319 source "fs/afs/Kconfig"
320 source "fs/9p/Kconfig"
322 endif # NETWORK_FILESYSTEMS
324 source "fs/nls/Kconfig"
325 source "fs/dlm/Kconfig"
326 source "fs/unicode/Kconfig"