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/NT Filesystems" 144 145source "fs/fat/Kconfig" 146source "fs/ntfs/Kconfig" 147 148endmenu 149endif # BLOCK 150 151menu "Pseudo filesystems" 152 153source "fs/proc/Kconfig" 154source "fs/kernfs/Kconfig" 155source "fs/sysfs/Kconfig" 156 157config TMPFS 158 bool "Tmpfs virtual memory file system support (former shm fs)" 159 depends on SHMEM 160 help 161 Tmpfs is a file system which keeps all files in virtual memory. 162 163 Everything in tmpfs is temporary in the sense that no files will be 164 created on your hard drive. The files live in memory and swap 165 space. If you unmount a tmpfs instance, everything stored therein is 166 lost. 167 168 See <file:Documentation/filesystems/tmpfs.txt> for details. 169 170config TMPFS_POSIX_ACL 171 bool "Tmpfs POSIX Access Control Lists" 172 depends on TMPFS 173 select TMPFS_XATTR 174 select FS_POSIX_ACL 175 help 176 POSIX Access Control Lists (ACLs) support additional access rights 177 for users and groups beyond the standard owner/group/world scheme, 178 and this option selects support for ACLs specifically for tmpfs 179 filesystems. 180 181 If you've selected TMPFS, it's possible that you'll also need 182 this option as there are a number of Linux distros that require 183 POSIX ACL support under /dev for certain features to work properly. 184 For example, some distros need this feature for ALSA-related /dev 185 files for sound to work properly. In short, if you're not sure, 186 say Y. 187 188config TMPFS_XATTR 189 bool "Tmpfs extended attributes" 190 depends on TMPFS 191 default n 192 help 193 Extended attributes are name:value pairs associated with inodes by 194 the kernel or by users (see the attr(5) manual page for details). 195 196 Currently this enables support for the trusted.* and 197 security.* namespaces. 198 199 You need this for POSIX ACL support on tmpfs. 200 201 If unsure, say N. 202 203config HUGETLBFS 204 bool "HugeTLB file system support" 205 depends on X86 || IA64 || SPARC64 || (S390 && 64BIT) || \ 206 SYS_SUPPORTS_HUGETLBFS || BROKEN 207 help 208 hugetlbfs is a filesystem backing for HugeTLB pages, based on 209 ramfs. For architectures that support it, say Y here and read 210 <file:Documentation/admin-guide/mm/hugetlbpage.rst> for details. 211 212 If unsure, say N. 213 214config HUGETLB_PAGE 215 def_bool HUGETLBFS 216 217config MEMFD_CREATE 218 def_bool TMPFS || HUGETLBFS 219 220config ARCH_HAS_GIGANTIC_PAGE 221 bool 222 223source "fs/configfs/Kconfig" 224source "fs/efivarfs/Kconfig" 225 226endmenu 227 228menuconfig MISC_FILESYSTEMS 229 bool "Miscellaneous filesystems" 230 default y 231 ---help--- 232 Say Y here to get to see options for various miscellaneous 233 filesystems, such as filesystems that came from other 234 operating systems. 235 236 This option alone does not add any kernel code. 237 238 If you say N, all options in this submenu will be skipped and 239 disabled; if unsure, say Y here. 240 241if MISC_FILESYSTEMS 242 243source "fs/orangefs/Kconfig" 244source "fs/adfs/Kconfig" 245source "fs/affs/Kconfig" 246source "fs/ecryptfs/Kconfig" 247source "fs/hfs/Kconfig" 248source "fs/hfsplus/Kconfig" 249source "fs/befs/Kconfig" 250source "fs/bfs/Kconfig" 251source "fs/efs/Kconfig" 252source "fs/jffs2/Kconfig" 253# UBIFS File system configuration 254source "fs/ubifs/Kconfig" 255source "fs/cramfs/Kconfig" 256source "fs/squashfs/Kconfig" 257source "fs/freevxfs/Kconfig" 258source "fs/minix/Kconfig" 259source "fs/omfs/Kconfig" 260source "fs/hpfs/Kconfig" 261source "fs/qnx4/Kconfig" 262source "fs/qnx6/Kconfig" 263source "fs/romfs/Kconfig" 264source "fs/pstore/Kconfig" 265source "fs/sysv/Kconfig" 266source "fs/ufs/Kconfig" 267source "fs/erofs/Kconfig" 268source "fs/vboxsf/Kconfig" 269 270endif # MISC_FILESYSTEMS 271 272menuconfig NETWORK_FILESYSTEMS 273 bool "Network File Systems" 274 default y 275 depends on NET 276 ---help--- 277 Say Y here to get to see options for network filesystems and 278 filesystem-related networking code, such as NFS daemon and 279 RPCSEC security modules. 280 281 This option alone does not add any kernel code. 282 283 If you say N, all options in this submenu will be skipped and 284 disabled; if unsure, say Y here. 285 286if NETWORK_FILESYSTEMS 287 288source "fs/nfs/Kconfig" 289source "fs/nfsd/Kconfig" 290 291config GRACE_PERIOD 292 tristate 293 294config LOCKD 295 tristate 296 depends on FILE_LOCKING 297 select GRACE_PERIOD 298 299config LOCKD_V4 300 bool 301 depends on NFSD_V3 || NFS_V3 302 depends on FILE_LOCKING 303 default y 304 305config NFS_ACL_SUPPORT 306 tristate 307 select FS_POSIX_ACL 308 309config NFS_COMMON 310 bool 311 depends on NFSD || NFS_FS || LOCKD 312 default y 313 314source "net/sunrpc/Kconfig" 315source "fs/ceph/Kconfig" 316source "fs/cifs/Kconfig" 317source "fs/coda/Kconfig" 318source "fs/afs/Kconfig" 319source "fs/9p/Kconfig" 320 321endif # NETWORK_FILESYSTEMS 322 323source "fs/nls/Kconfig" 324source "fs/dlm/Kconfig" 325source "fs/unicode/Kconfig" 326 327config IO_WQ 328 bool 329 330endmenu 331