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/verity/Kconfig"
117 source "fs/notify/Kconfig"
119 source "fs/quota/Kconfig"
121 source "fs/autofs/Kconfig"
122 source "fs/fuse/Kconfig"
123 source "fs/overlayfs/Kconfig"
127 source "fs/fscache/Kconfig"
128 source "fs/cachefiles/Kconfig"
133 menu "CD-ROM/DVD Filesystems"
135 source "fs/isofs/Kconfig"
136 source "fs/udf/Kconfig"
142 menu "DOS/FAT/NT Filesystems"
144 source "fs/fat/Kconfig"
145 source "fs/ntfs/Kconfig"
150 menu "Pseudo filesystems"
152 source "fs/proc/Kconfig"
153 source "fs/kernfs/Kconfig"
154 source "fs/sysfs/Kconfig"
157 bool "Tmpfs virtual memory file system support (former shm fs)"
160 Tmpfs is a file system which keeps all files in virtual memory.
162 Everything in tmpfs is temporary in the sense that no files will be
163 created on your hard drive. The files live in memory and swap
164 space. If you unmount a tmpfs instance, everything stored therein is
167 See <file:Documentation/filesystems/tmpfs.txt> for details.
169 config TMPFS_POSIX_ACL
170 bool "Tmpfs POSIX Access Control Lists"
175 POSIX Access Control Lists (ACLs) support additional access rights
176 for users and groups beyond the standard owner/group/world scheme,
177 and this option selects support for ACLs specifically for tmpfs
180 If you've selected TMPFS, it's possible that you'll also need
181 this option as there are a number of Linux distros that require
182 POSIX ACL support under /dev for certain features to work properly.
183 For example, some distros need this feature for ALSA-related /dev
184 files for sound to work properly. In short, if you're not sure,
188 bool "Tmpfs extended attributes"
192 Extended attributes are name:value pairs associated with inodes by
193 the kernel or by users (see the attr(5) manual page for details).
195 Currently this enables support for the trusted.* and
196 security.* namespaces.
198 You need this for POSIX ACL support on tmpfs.
203 bool "HugeTLB file system support"
204 depends on X86 || IA64 || SPARC64 || (S390 && 64BIT) || \
205 SYS_SUPPORTS_HUGETLBFS || BROKEN
207 hugetlbfs is a filesystem backing for HugeTLB pages, based on
208 ramfs. For architectures that support it, say Y here and read
209 <file:Documentation/admin-guide/mm/hugetlbpage.rst> for details.
217 def_bool TMPFS || HUGETLBFS
219 config ARCH_HAS_GIGANTIC_PAGE
222 source "fs/configfs/Kconfig"
223 source "fs/efivarfs/Kconfig"
227 menuconfig MISC_FILESYSTEMS
228 bool "Miscellaneous filesystems"
231 Say Y here to get to see options for various miscellaneous
232 filesystems, such as filesystems that came from other
235 This option alone does not add any kernel code.
237 If you say N, all options in this submenu will be skipped and
238 disabled; if unsure, say Y here.
242 source "fs/orangefs/Kconfig"
243 source "fs/adfs/Kconfig"
244 source "fs/affs/Kconfig"
245 source "fs/ecryptfs/Kconfig"
246 source "fs/hfs/Kconfig"
247 source "fs/hfsplus/Kconfig"
248 source "fs/befs/Kconfig"
249 source "fs/bfs/Kconfig"
250 source "fs/efs/Kconfig"
251 source "fs/jffs2/Kconfig"
252 # UBIFS File system configuration
253 source "fs/ubifs/Kconfig"
254 source "fs/cramfs/Kconfig"
255 source "fs/squashfs/Kconfig"
256 source "fs/freevxfs/Kconfig"
257 source "fs/minix/Kconfig"
258 source "fs/omfs/Kconfig"
259 source "fs/hpfs/Kconfig"
260 source "fs/qnx4/Kconfig"
261 source "fs/qnx6/Kconfig"
262 source "fs/romfs/Kconfig"
263 source "fs/pstore/Kconfig"
264 source "fs/sysv/Kconfig"
265 source "fs/ufs/Kconfig"
266 source "fs/erofs/Kconfig"
268 endif # MISC_FILESYSTEMS
270 menuconfig NETWORK_FILESYSTEMS
271 bool "Network File Systems"
275 Say Y here to get to see options for network filesystems and
276 filesystem-related networking code, such as NFS daemon and
277 RPCSEC security modules.
279 This option alone does not add any kernel code.
281 If you say N, all options in this submenu will be skipped and
282 disabled; if unsure, say Y here.
284 if NETWORK_FILESYSTEMS
286 source "fs/nfs/Kconfig"
287 source "fs/nfsd/Kconfig"
294 depends on FILE_LOCKING
299 depends on NFSD_V3 || NFS_V3
300 depends on FILE_LOCKING
303 config NFS_ACL_SUPPORT
309 depends on NFSD || NFS_FS || LOCKD
312 source "net/sunrpc/Kconfig"
313 source "fs/ceph/Kconfig"
314 source "fs/cifs/Kconfig"
315 source "fs/coda/Kconfig"
316 source "fs/afs/Kconfig"
317 source "fs/9p/Kconfig"
319 endif # NETWORK_FILESYSTEMS
321 source "fs/nls/Kconfig"
322 source "fs/dlm/Kconfig"
323 source "fs/unicode/Kconfig"