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" 43 44config FS_DAX 45 bool "Direct Access (DAX) support" 46 depends on MMU 47 depends on !(ARM || MIPS || SPARC) 48 select DEV_PAGEMAP_OPS if (ZONE_DEVICE && !FS_DAX_LIMITED) 49 select FS_IOMAP 50 select DAX 51 help 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. 57 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 60 by about 5kB. 61 62config FS_DAX_PMD 63 bool 64 default FS_DAX 65 depends on FS_DAX 66 depends on ZONE_DEVICE 67 depends on TRANSPARENT_HUGEPAGE 68 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. 73config FS_DAX_LIMITED 74 bool 75 76endif # BLOCK 77 78# Posix ACL utility routines 79# 80# Note: Posix ACLs can be implemented without these helpers. Never use 81# this symbol for ifdefs in core code. 82# 83config FS_POSIX_ACL 84 def_bool n 85 86config EXPORTFS 87 tristate 88 89config EXPORTFS_BLOCK_OPS 90 bool "Enable filesystem export operations for block IO" 91 help 92 This option enables the export operations for a filesystem to support 93 external block IO. 94 95config FILE_LOCKING 96 bool "Enable POSIX file locking API" if EXPERT 97 default y 98 help 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. 102 103config MANDATORY_FILE_LOCKING 104 bool "Enable Mandatory file locking" 105 depends on FILE_LOCKING 106 default y 107 help 108 This option enables files appropriately marked files on appropriely 109 mounted filesystems to support mandatory locking. 110 111 To the best of my knowledge this is dead code that no one cares about. 112 113source "fs/crypto/Kconfig" 114 115source "fs/verity/Kconfig" 116 117source "fs/notify/Kconfig" 118 119source "fs/quota/Kconfig" 120 121source "fs/autofs/Kconfig" 122source "fs/fuse/Kconfig" 123source "fs/overlayfs/Kconfig" 124 125menu "Caches" 126 127source "fs/fscache/Kconfig" 128source "fs/cachefiles/Kconfig" 129 130endmenu 131 132if BLOCK 133menu "CD-ROM/DVD Filesystems" 134 135source "fs/isofs/Kconfig" 136source "fs/udf/Kconfig" 137 138endmenu 139endif # BLOCK 140 141if BLOCK 142menu "DOS/FAT/NT Filesystems" 143 144source "fs/fat/Kconfig" 145source "fs/ntfs/Kconfig" 146 147endmenu 148endif # BLOCK 149 150menu "Pseudo filesystems" 151 152source "fs/proc/Kconfig" 153source "fs/kernfs/Kconfig" 154source "fs/sysfs/Kconfig" 155 156config TMPFS 157 bool "Tmpfs virtual memory file system support (former shm fs)" 158 depends on SHMEM 159 help 160 Tmpfs is a file system which keeps all files in virtual memory. 161 162 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 165 lost. 166 167 See <file:Documentation/filesystems/tmpfs.txt> for details. 168 169config TMPFS_POSIX_ACL 170 bool "Tmpfs POSIX Access Control Lists" 171 depends on TMPFS 172 select TMPFS_XATTR 173 select FS_POSIX_ACL 174 help 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 178 filesystems. 179 180 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, 185 say Y. 186 187config TMPFS_XATTR 188 bool "Tmpfs extended attributes" 189 depends on TMPFS 190 default n 191 help 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). 194 195 Currently this enables support for the trusted.* and 196 security.* namespaces. 197 198 You need this for POSIX ACL support on tmpfs. 199 200 If unsure, say N. 201 202config HUGETLBFS 203 bool "HugeTLB file system support" 204 depends on X86 || IA64 || SPARC64 || (S390 && 64BIT) || \ 205 SYS_SUPPORTS_HUGETLBFS || BROKEN 206 help 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. 210 211 If unsure, say N. 212 213config HUGETLB_PAGE 214 def_bool HUGETLBFS 215 216config MEMFD_CREATE 217 def_bool TMPFS || HUGETLBFS 218 219config ARCH_HAS_GIGANTIC_PAGE 220 bool 221 222source "fs/configfs/Kconfig" 223source "fs/efivarfs/Kconfig" 224 225endmenu 226 227menuconfig MISC_FILESYSTEMS 228 bool "Miscellaneous filesystems" 229 default y 230 ---help--- 231 Say Y here to get to see options for various miscellaneous 232 filesystems, such as filesystems that came from other 233 operating systems. 234 235 This option alone does not add any kernel code. 236 237 If you say N, all options in this submenu will be skipped and 238 disabled; if unsure, say Y here. 239 240if MISC_FILESYSTEMS 241 242source "fs/orangefs/Kconfig" 243source "fs/adfs/Kconfig" 244source "fs/affs/Kconfig" 245source "fs/ecryptfs/Kconfig" 246source "fs/hfs/Kconfig" 247source "fs/hfsplus/Kconfig" 248source "fs/befs/Kconfig" 249source "fs/bfs/Kconfig" 250source "fs/efs/Kconfig" 251source "fs/jffs2/Kconfig" 252# UBIFS File system configuration 253source "fs/ubifs/Kconfig" 254source "fs/cramfs/Kconfig" 255source "fs/squashfs/Kconfig" 256source "fs/freevxfs/Kconfig" 257source "fs/minix/Kconfig" 258source "fs/omfs/Kconfig" 259source "fs/hpfs/Kconfig" 260source "fs/qnx4/Kconfig" 261source "fs/qnx6/Kconfig" 262source "fs/romfs/Kconfig" 263source "fs/pstore/Kconfig" 264source "fs/sysv/Kconfig" 265source "fs/ufs/Kconfig" 266source "fs/erofs/Kconfig" 267 268endif # MISC_FILESYSTEMS 269 270menuconfig NETWORK_FILESYSTEMS 271 bool "Network File Systems" 272 default y 273 depends on NET 274 ---help--- 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. 278 279 This option alone does not add any kernel code. 280 281 If you say N, all options in this submenu will be skipped and 282 disabled; if unsure, say Y here. 283 284if NETWORK_FILESYSTEMS 285 286source "fs/nfs/Kconfig" 287source "fs/nfsd/Kconfig" 288 289config GRACE_PERIOD 290 tristate 291 292config LOCKD 293 tristate 294 depends on FILE_LOCKING 295 select GRACE_PERIOD 296 297config LOCKD_V4 298 bool 299 depends on NFSD_V3 || NFS_V3 300 depends on FILE_LOCKING 301 default y 302 303config NFS_ACL_SUPPORT 304 tristate 305 select FS_POSIX_ACL 306 307config NFS_COMMON 308 bool 309 depends on NFSD || NFS_FS || LOCKD 310 default y 311 312source "net/sunrpc/Kconfig" 313source "fs/ceph/Kconfig" 314source "fs/cifs/Kconfig" 315source "fs/coda/Kconfig" 316source "fs/afs/Kconfig" 317source "fs/9p/Kconfig" 318 319endif # NETWORK_FILESYSTEMS 320 321source "fs/nls/Kconfig" 322source "fs/dlm/Kconfig" 323source "fs/unicode/Kconfig" 324 325endmenu 326