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 default y 15 help 16 Enable this to perform validation of the parameter description for a 17 filesystem when it is registered. 18 19if BLOCK 20 21config FS_IOMAP 22 bool 23 24source "fs/ext2/Kconfig" 25source "fs/ext4/Kconfig" 26source "fs/jbd2/Kconfig" 27 28config FS_MBCACHE 29# Meta block cache for Extended Attributes (ext2/ext3/ext4) 30 tristate 31 default y if EXT2_FS=y && EXT2_FS_XATTR 32 default y if EXT4_FS=y 33 default m if EXT2_FS_XATTR || EXT4_FS 34 35source "fs/reiserfs/Kconfig" 36source "fs/jfs/Kconfig" 37 38source "fs/xfs/Kconfig" 39source "fs/gfs2/Kconfig" 40source "fs/ocfs2/Kconfig" 41source "fs/btrfs/Kconfig" 42source "fs/nilfs2/Kconfig" 43source "fs/f2fs/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/notify/Kconfig" 117 118source "fs/quota/Kconfig" 119 120source "fs/autofs/Kconfig" 121source "fs/fuse/Kconfig" 122source "fs/overlayfs/Kconfig" 123 124menu "Caches" 125 126source "fs/fscache/Kconfig" 127source "fs/cachefiles/Kconfig" 128 129endmenu 130 131if BLOCK 132menu "CD-ROM/DVD Filesystems" 133 134source "fs/isofs/Kconfig" 135source "fs/udf/Kconfig" 136 137endmenu 138endif # BLOCK 139 140if BLOCK 141menu "DOS/FAT/NT Filesystems" 142 143source "fs/fat/Kconfig" 144source "fs/ntfs/Kconfig" 145 146endmenu 147endif # BLOCK 148 149menu "Pseudo filesystems" 150 151source "fs/proc/Kconfig" 152source "fs/kernfs/Kconfig" 153source "fs/sysfs/Kconfig" 154 155config TMPFS 156 bool "Tmpfs virtual memory file system support (former shm fs)" 157 depends on SHMEM 158 help 159 Tmpfs is a file system which keeps all files in virtual memory. 160 161 Everything in tmpfs is temporary in the sense that no files will be 162 created on your hard drive. The files live in memory and swap 163 space. If you unmount a tmpfs instance, everything stored therein is 164 lost. 165 166 See <file:Documentation/filesystems/tmpfs.txt> for details. 167 168config TMPFS_POSIX_ACL 169 bool "Tmpfs POSIX Access Control Lists" 170 depends on TMPFS 171 select TMPFS_XATTR 172 select FS_POSIX_ACL 173 help 174 POSIX Access Control Lists (ACLs) support additional access rights 175 for users and groups beyond the standard owner/group/world scheme, 176 and this option selects support for ACLs specifically for tmpfs 177 filesystems. 178 179 If you've selected TMPFS, it's possible that you'll also need 180 this option as there are a number of Linux distros that require 181 POSIX ACL support under /dev for certain features to work properly. 182 For example, some distros need this feature for ALSA-related /dev 183 files for sound to work properly. In short, if you're not sure, 184 say Y. 185 186config TMPFS_XATTR 187 bool "Tmpfs extended attributes" 188 depends on TMPFS 189 default n 190 help 191 Extended attributes are name:value pairs associated with inodes by 192 the kernel or by users (see the attr(5) manual page for details). 193 194 Currently this enables support for the trusted.* and 195 security.* namespaces. 196 197 You need this for POSIX ACL support on tmpfs. 198 199 If unsure, say N. 200 201config HUGETLBFS 202 bool "HugeTLB file system support" 203 depends on X86 || IA64 || SPARC64 || (S390 && 64BIT) || \ 204 SYS_SUPPORTS_HUGETLBFS || BROKEN 205 help 206 hugetlbfs is a filesystem backing for HugeTLB pages, based on 207 ramfs. For architectures that support it, say Y here and read 208 <file:Documentation/admin-guide/mm/hugetlbpage.rst> for details. 209 210 If unsure, say N. 211 212config HUGETLB_PAGE 213 def_bool HUGETLBFS 214 215config MEMFD_CREATE 216 def_bool TMPFS || HUGETLBFS 217 218config ARCH_HAS_GIGANTIC_PAGE 219 bool 220 221source "fs/configfs/Kconfig" 222source "fs/efivarfs/Kconfig" 223 224endmenu 225 226menuconfig MISC_FILESYSTEMS 227 bool "Miscellaneous filesystems" 228 default y 229 ---help--- 230 Say Y here to get to see options for various miscellaneous 231 filesystems, such as filesystems that came from other 232 operating systems. 233 234 This option alone does not add any kernel code. 235 236 If you say N, all options in this submenu will be skipped and 237 disabled; if unsure, say Y here. 238 239if MISC_FILESYSTEMS 240 241source "fs/orangefs/Kconfig" 242source "fs/adfs/Kconfig" 243source "fs/affs/Kconfig" 244source "fs/ecryptfs/Kconfig" 245source "fs/hfs/Kconfig" 246source "fs/hfsplus/Kconfig" 247source "fs/befs/Kconfig" 248source "fs/bfs/Kconfig" 249source "fs/efs/Kconfig" 250source "fs/jffs2/Kconfig" 251# UBIFS File system configuration 252source "fs/ubifs/Kconfig" 253source "fs/cramfs/Kconfig" 254source "fs/squashfs/Kconfig" 255source "fs/freevxfs/Kconfig" 256source "fs/minix/Kconfig" 257source "fs/omfs/Kconfig" 258source "fs/hpfs/Kconfig" 259source "fs/qnx4/Kconfig" 260source "fs/qnx6/Kconfig" 261source "fs/romfs/Kconfig" 262source "fs/pstore/Kconfig" 263source "fs/sysv/Kconfig" 264source "fs/ufs/Kconfig" 265 266endif # MISC_FILESYSTEMS 267 268menuconfig NETWORK_FILESYSTEMS 269 bool "Network File Systems" 270 default y 271 depends on NET 272 ---help--- 273 Say Y here to get to see options for network filesystems and 274 filesystem-related networking code, such as NFS daemon and 275 RPCSEC security modules. 276 277 This option alone does not add any kernel code. 278 279 If you say N, all options in this submenu will be skipped and 280 disabled; if unsure, say Y here. 281 282if NETWORK_FILESYSTEMS 283 284source "fs/nfs/Kconfig" 285source "fs/nfsd/Kconfig" 286 287config GRACE_PERIOD 288 tristate 289 290config LOCKD 291 tristate 292 depends on FILE_LOCKING 293 select GRACE_PERIOD 294 295config LOCKD_V4 296 bool 297 depends on NFSD_V3 || NFS_V3 298 depends on FILE_LOCKING 299 default y 300 301config NFS_ACL_SUPPORT 302 tristate 303 select FS_POSIX_ACL 304 305config NFS_COMMON 306 bool 307 depends on NFSD || NFS_FS || LOCKD 308 default y 309 310source "net/sunrpc/Kconfig" 311source "fs/ceph/Kconfig" 312source "fs/cifs/Kconfig" 313source "fs/coda/Kconfig" 314source "fs/afs/Kconfig" 315source "fs/9p/Kconfig" 316 317endif # NETWORK_FILESYSTEMS 318 319source "fs/nls/Kconfig" 320source "fs/dlm/Kconfig" 321source "fs/unicode/Kconfig" 322 323endmenu 324