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"
45 bool "Direct Access (DAX) support"
47 depends on !(ARM || MIPS || SPARC)
48 select DEV_PAGEMAP_OPS if (ZONE_DEVICE && !FS_DAX_LIMITED)
52 Direct Access (DAX) can be used on memory-backed block devices.
53 If the block device supports DAX and the filesystem supports DAX,
54 then you can avoid using the pagecache to buffer I/Os. Turning
55 on this option will compile in support for DAX; you will need to
56 mount the filesystem using the -o dax option.
58 If you do not have a block device that is capable of using this,
59 or if unsure, say N. Saying Y will increase the size of the kernel
66 depends on ZONE_DEVICE
67 depends on TRANSPARENT_HUGEPAGE
69 # Selected by DAX drivers that do not expect filesystem DAX to support
70 # get_user_pages() of DAX mappings. I.e. "limited" indicates no support
71 # for fork() of processes with MAP_SHARED mappings or support for
72 # direct-I/O to a DAX mapping.
78 # Posix ACL utility routines
80 # Note: Posix ACLs can be implemented without these helpers. Never use
81 # this symbol for ifdefs in core code.
89 config EXPORTFS_BLOCK_OPS
90 bool "Enable filesystem export operations for block IO"
92 This option enables the export operations for a filesystem to support
96 bool "Enable POSIX file locking API" if EXPERT
99 This option enables standard file locking support, required
100 for filesystems like NFS and for the flock() system
101 call. Disabling this option saves about 11k.
103 config MANDATORY_FILE_LOCKING
104 bool "Enable Mandatory file locking"
105 depends on FILE_LOCKING
108 This option enables files appropriately marked files on appropriely
109 mounted filesystems to support mandatory locking.
111 To the best of my knowledge this is dead code that no one cares about.
113 source "fs/crypto/Kconfig"
115 source "fs/notify/Kconfig"
117 source "fs/quota/Kconfig"
119 source "fs/autofs/Kconfig"
120 source "fs/fuse/Kconfig"
121 source "fs/overlayfs/Kconfig"
125 source "fs/fscache/Kconfig"
126 source "fs/cachefiles/Kconfig"
131 menu "CD-ROM/DVD Filesystems"
133 source "fs/isofs/Kconfig"
134 source "fs/udf/Kconfig"
140 menu "DOS/FAT/NT Filesystems"
142 source "fs/fat/Kconfig"
143 source "fs/ntfs/Kconfig"
148 menu "Pseudo filesystems"
150 source "fs/proc/Kconfig"
151 source "fs/kernfs/Kconfig"
152 source "fs/sysfs/Kconfig"
155 bool "Tmpfs virtual memory file system support (former shm fs)"
158 Tmpfs is a file system which keeps all files in virtual memory.
160 Everything in tmpfs is temporary in the sense that no files will be
161 created on your hard drive. The files live in memory and swap
162 space. If you unmount a tmpfs instance, everything stored therein is
165 See <file:Documentation/filesystems/tmpfs.txt> for details.
167 config TMPFS_POSIX_ACL
168 bool "Tmpfs POSIX Access Control Lists"
173 POSIX Access Control Lists (ACLs) support additional access rights
174 for users and groups beyond the standard owner/group/world scheme,
175 and this option selects support for ACLs specifically for tmpfs
178 If you've selected TMPFS, it's possible that you'll also need
179 this option as there are a number of Linux distros that require
180 POSIX ACL support under /dev for certain features to work properly.
181 For example, some distros need this feature for ALSA-related /dev
182 files for sound to work properly. In short, if you're not sure,
186 bool "Tmpfs extended attributes"
190 Extended attributes are name:value pairs associated with inodes by
191 the kernel or by users (see the attr(5) manual page for details).
193 Currently this enables support for the trusted.* and
194 security.* namespaces.
196 You need this for POSIX ACL support on tmpfs.
201 bool "HugeTLB file system support"
202 depends on X86 || IA64 || SPARC64 || (S390 && 64BIT) || \
203 SYS_SUPPORTS_HUGETLBFS || BROKEN
205 hugetlbfs is a filesystem backing for HugeTLB pages, based on
206 ramfs. For architectures that support it, say Y here and read
207 <file:Documentation/admin-guide/mm/hugetlbpage.rst> for details.
215 def_bool TMPFS || HUGETLBFS
217 config ARCH_HAS_GIGANTIC_PAGE
220 source "fs/configfs/Kconfig"
221 source "fs/efivarfs/Kconfig"
225 menuconfig MISC_FILESYSTEMS
226 bool "Miscellaneous filesystems"
229 Say Y here to get to see options for various miscellaneous
230 filesystems, such as filesystems that came from other
233 This option alone does not add any kernel code.
235 If you say N, all options in this submenu will be skipped and
236 disabled; if unsure, say Y here.
240 source "fs/orangefs/Kconfig"
241 source "fs/adfs/Kconfig"
242 source "fs/affs/Kconfig"
243 source "fs/ecryptfs/Kconfig"
244 source "fs/hfs/Kconfig"
245 source "fs/hfsplus/Kconfig"
246 source "fs/befs/Kconfig"
247 source "fs/bfs/Kconfig"
248 source "fs/efs/Kconfig"
249 source "fs/jffs2/Kconfig"
250 # UBIFS File system configuration
251 source "fs/ubifs/Kconfig"
252 source "fs/cramfs/Kconfig"
253 source "fs/squashfs/Kconfig"
254 source "fs/freevxfs/Kconfig"
255 source "fs/minix/Kconfig"
256 source "fs/omfs/Kconfig"
257 source "fs/hpfs/Kconfig"
258 source "fs/qnx4/Kconfig"
259 source "fs/qnx6/Kconfig"
260 source "fs/romfs/Kconfig"
261 source "fs/pstore/Kconfig"
262 source "fs/sysv/Kconfig"
263 source "fs/ufs/Kconfig"
265 endif # MISC_FILESYSTEMS
267 menuconfig NETWORK_FILESYSTEMS
268 bool "Network File Systems"
272 Say Y here to get to see options for network filesystems and
273 filesystem-related networking code, such as NFS daemon and
274 RPCSEC security modules.
276 This option alone does not add any kernel code.
278 If you say N, all options in this submenu will be skipped and
279 disabled; if unsure, say Y here.
281 if NETWORK_FILESYSTEMS
283 source "fs/nfs/Kconfig"
284 source "fs/nfsd/Kconfig"
291 depends on FILE_LOCKING
296 depends on NFSD_V3 || NFS_V3
297 depends on FILE_LOCKING
300 config NFS_ACL_SUPPORT
306 depends on NFSD || NFS_FS || LOCKD
309 source "net/sunrpc/Kconfig"
310 source "fs/ceph/Kconfig"
311 source "fs/cifs/Kconfig"
312 source "fs/coda/Kconfig"
313 source "fs/afs/Kconfig"
314 source "fs/9p/Kconfig"
316 endif # NETWORK_FILESYSTEMS
318 source "fs/nls/Kconfig"
319 source "fs/dlm/Kconfig"
320 source "fs/unicode/Kconfig"