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 help 15 Enable this to perform validation of the parameter description for a 16 filesystem when it is registered. 17 18if BLOCK 19 20config FS_IOMAP 21 bool 22 23source "fs/ext2/Kconfig" 24source "fs/ext4/Kconfig" 25source "fs/jbd2/Kconfig" 26 27config FS_MBCACHE 28# Meta block cache for Extended Attributes (ext2/ext3/ext4) 29 tristate 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 33 34source "fs/reiserfs/Kconfig" 35source "fs/jfs/Kconfig" 36 37source "fs/xfs/Kconfig" 38source "fs/gfs2/Kconfig" 39source "fs/ocfs2/Kconfig" 40source "fs/btrfs/Kconfig" 41source "fs/nilfs2/Kconfig" 42source "fs/f2fs/Kconfig" 43source "fs/zonefs/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/verity/Kconfig" 117 118source "fs/notify/Kconfig" 119 120source "fs/quota/Kconfig" 121 122source "fs/autofs/Kconfig" 123source "fs/fuse/Kconfig" 124source "fs/overlayfs/Kconfig" 125 126menu "Caches" 127 128source "fs/fscache/Kconfig" 129source "fs/cachefiles/Kconfig" 130 131endmenu 132 133if BLOCK 134menu "CD-ROM/DVD Filesystems" 135 136source "fs/isofs/Kconfig" 137source "fs/udf/Kconfig" 138 139endmenu 140endif # BLOCK 141 142if BLOCK 143menu "DOS/FAT/EXFAT/NT Filesystems" 144 145source "fs/fat/Kconfig" 146source "fs/exfat/Kconfig" 147source "fs/ntfs/Kconfig" 148 149endmenu 150endif # BLOCK 151 152menu "Pseudo filesystems" 153 154source "fs/proc/Kconfig" 155source "fs/kernfs/Kconfig" 156source "fs/sysfs/Kconfig" 157 158config TMPFS 159 bool "Tmpfs virtual memory file system support (former shm fs)" 160 depends on SHMEM 161 help 162 Tmpfs is a file system which keeps all files in virtual memory. 163 164 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 167 lost. 168 169 See <file:Documentation/filesystems/tmpfs.rst> for details. 170 171config TMPFS_POSIX_ACL 172 bool "Tmpfs POSIX Access Control Lists" 173 depends on TMPFS 174 select TMPFS_XATTR 175 select FS_POSIX_ACL 176 help 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 180 filesystems. 181 182 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, 187 say Y. 188 189config TMPFS_XATTR 190 bool "Tmpfs extended attributes" 191 depends on TMPFS 192 default n 193 help 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). 196 197 Currently this enables support for the trusted.* and 198 security.* namespaces. 199 200 You need this for POSIX ACL support on tmpfs. 201 202 If unsure, say N. 203 204config HUGETLBFS 205 bool "HugeTLB file system support" 206 depends on X86 || IA64 || SPARC64 || (S390 && 64BIT) || \ 207 SYS_SUPPORTS_HUGETLBFS || BROKEN 208 help 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. 212 213 If unsure, say N. 214 215config HUGETLB_PAGE 216 def_bool HUGETLBFS 217 218config MEMFD_CREATE 219 def_bool TMPFS || HUGETLBFS 220 221config ARCH_HAS_GIGANTIC_PAGE 222 bool 223 224source "fs/configfs/Kconfig" 225source "fs/efivarfs/Kconfig" 226 227endmenu 228 229menuconfig MISC_FILESYSTEMS 230 bool "Miscellaneous filesystems" 231 default y 232 help 233 Say Y here to get to see options for various miscellaneous 234 filesystems, such as filesystems that came from other 235 operating systems. 236 237 This option alone does not add any kernel code. 238 239 If you say N, all options in this submenu will be skipped and 240 disabled; if unsure, say Y here. 241 242if MISC_FILESYSTEMS 243 244source "fs/orangefs/Kconfig" 245source "fs/adfs/Kconfig" 246source "fs/affs/Kconfig" 247source "fs/ecryptfs/Kconfig" 248source "fs/hfs/Kconfig" 249source "fs/hfsplus/Kconfig" 250source "fs/befs/Kconfig" 251source "fs/bfs/Kconfig" 252source "fs/efs/Kconfig" 253source "fs/jffs2/Kconfig" 254# UBIFS File system configuration 255source "fs/ubifs/Kconfig" 256source "fs/cramfs/Kconfig" 257source "fs/squashfs/Kconfig" 258source "fs/freevxfs/Kconfig" 259source "fs/minix/Kconfig" 260source "fs/omfs/Kconfig" 261source "fs/hpfs/Kconfig" 262source "fs/qnx4/Kconfig" 263source "fs/qnx6/Kconfig" 264source "fs/romfs/Kconfig" 265source "fs/pstore/Kconfig" 266source "fs/sysv/Kconfig" 267source "fs/ufs/Kconfig" 268source "fs/erofs/Kconfig" 269source "fs/vboxsf/Kconfig" 270 271endif # MISC_FILESYSTEMS 272 273menuconfig NETWORK_FILESYSTEMS 274 bool "Network File Systems" 275 default y 276 depends on NET 277 help 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. 281 282 This option alone does not add any kernel code. 283 284 If you say N, all options in this submenu will be skipped and 285 disabled; if unsure, say Y here. 286 287if NETWORK_FILESYSTEMS 288 289source "fs/nfs/Kconfig" 290source "fs/nfsd/Kconfig" 291 292config GRACE_PERIOD 293 tristate 294 295config LOCKD 296 tristate 297 depends on FILE_LOCKING 298 select GRACE_PERIOD 299 300config LOCKD_V4 301 bool 302 depends on NFSD_V3 || NFS_V3 303 depends on FILE_LOCKING 304 default y 305 306config NFS_ACL_SUPPORT 307 tristate 308 select FS_POSIX_ACL 309 310config NFS_COMMON 311 bool 312 depends on NFSD || NFS_FS || LOCKD 313 default y 314 315source "net/sunrpc/Kconfig" 316source "fs/ceph/Kconfig" 317source "fs/cifs/Kconfig" 318source "fs/coda/Kconfig" 319source "fs/afs/Kconfig" 320source "fs/9p/Kconfig" 321 322endif # NETWORK_FILESYSTEMS 323 324source "fs/nls/Kconfig" 325source "fs/dlm/Kconfig" 326source "fs/unicode/Kconfig" 327 328config IO_WQ 329 bool 330 331endmenu 332