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/notify/Kconfig" 116 117source "fs/quota/Kconfig" 118 119source "fs/autofs/Kconfig" 120source "fs/fuse/Kconfig" 121source "fs/overlayfs/Kconfig" 122 123menu "Caches" 124 125source "fs/fscache/Kconfig" 126source "fs/cachefiles/Kconfig" 127 128endmenu 129 130if BLOCK 131menu "CD-ROM/DVD Filesystems" 132 133source "fs/isofs/Kconfig" 134source "fs/udf/Kconfig" 135 136endmenu 137endif # BLOCK 138 139if BLOCK 140menu "DOS/FAT/NT Filesystems" 141 142source "fs/fat/Kconfig" 143source "fs/ntfs/Kconfig" 144 145endmenu 146endif # BLOCK 147 148menu "Pseudo filesystems" 149 150source "fs/proc/Kconfig" 151source "fs/kernfs/Kconfig" 152source "fs/sysfs/Kconfig" 153 154config TMPFS 155 bool "Tmpfs virtual memory file system support (former shm fs)" 156 depends on SHMEM 157 help 158 Tmpfs is a file system which keeps all files in virtual memory. 159 160 Everything in tmpfs is temporary in the sense that no files will be 161 created on your hard drive. The files live in memory and swap 162 space. If you unmount a tmpfs instance, everything stored therein is 163 lost. 164 165 See <file:Documentation/filesystems/tmpfs.txt> for details. 166 167config TMPFS_POSIX_ACL 168 bool "Tmpfs POSIX Access Control Lists" 169 depends on TMPFS 170 select TMPFS_XATTR 171 select FS_POSIX_ACL 172 help 173 POSIX Access Control Lists (ACLs) support additional access rights 174 for users and groups beyond the standard owner/group/world scheme, 175 and this option selects support for ACLs specifically for tmpfs 176 filesystems. 177 178 If you've selected TMPFS, it's possible that you'll also need 179 this option as there are a number of Linux distros that require 180 POSIX ACL support under /dev for certain features to work properly. 181 For example, some distros need this feature for ALSA-related /dev 182 files for sound to work properly. In short, if you're not sure, 183 say Y. 184 185config TMPFS_XATTR 186 bool "Tmpfs extended attributes" 187 depends on TMPFS 188 default n 189 help 190 Extended attributes are name:value pairs associated with inodes by 191 the kernel or by users (see the attr(5) manual page for details). 192 193 Currently this enables support for the trusted.* and 194 security.* namespaces. 195 196 You need this for POSIX ACL support on tmpfs. 197 198 If unsure, say N. 199 200config HUGETLBFS 201 bool "HugeTLB file system support" 202 depends on X86 || IA64 || SPARC64 || (S390 && 64BIT) || \ 203 SYS_SUPPORTS_HUGETLBFS || BROKEN 204 help 205 hugetlbfs is a filesystem backing for HugeTLB pages, based on 206 ramfs. For architectures that support it, say Y here and read 207 <file:Documentation/admin-guide/mm/hugetlbpage.rst> for details. 208 209 If unsure, say N. 210 211config HUGETLB_PAGE 212 def_bool HUGETLBFS 213 214config MEMFD_CREATE 215 def_bool TMPFS || HUGETLBFS 216 217config ARCH_HAS_GIGANTIC_PAGE 218 bool 219 220source "fs/configfs/Kconfig" 221source "fs/efivarfs/Kconfig" 222 223endmenu 224 225menuconfig MISC_FILESYSTEMS 226 bool "Miscellaneous filesystems" 227 default y 228 ---help--- 229 Say Y here to get to see options for various miscellaneous 230 filesystems, such as filesystems that came from other 231 operating systems. 232 233 This option alone does not add any kernel code. 234 235 If you say N, all options in this submenu will be skipped and 236 disabled; if unsure, say Y here. 237 238if MISC_FILESYSTEMS 239 240source "fs/orangefs/Kconfig" 241source "fs/adfs/Kconfig" 242source "fs/affs/Kconfig" 243source "fs/ecryptfs/Kconfig" 244source "fs/hfs/Kconfig" 245source "fs/hfsplus/Kconfig" 246source "fs/befs/Kconfig" 247source "fs/bfs/Kconfig" 248source "fs/efs/Kconfig" 249source "fs/jffs2/Kconfig" 250# UBIFS File system configuration 251source "fs/ubifs/Kconfig" 252source "fs/cramfs/Kconfig" 253source "fs/squashfs/Kconfig" 254source "fs/freevxfs/Kconfig" 255source "fs/minix/Kconfig" 256source "fs/omfs/Kconfig" 257source "fs/hpfs/Kconfig" 258source "fs/qnx4/Kconfig" 259source "fs/qnx6/Kconfig" 260source "fs/romfs/Kconfig" 261source "fs/pstore/Kconfig" 262source "fs/sysv/Kconfig" 263source "fs/ufs/Kconfig" 264 265endif # MISC_FILESYSTEMS 266 267menuconfig NETWORK_FILESYSTEMS 268 bool "Network File Systems" 269 default y 270 depends on NET 271 ---help--- 272 Say Y here to get to see options for network filesystems and 273 filesystem-related networking code, such as NFS daemon and 274 RPCSEC security modules. 275 276 This option alone does not add any kernel code. 277 278 If you say N, all options in this submenu will be skipped and 279 disabled; if unsure, say Y here. 280 281if NETWORK_FILESYSTEMS 282 283source "fs/nfs/Kconfig" 284source "fs/nfsd/Kconfig" 285 286config GRACE_PERIOD 287 tristate 288 289config LOCKD 290 tristate 291 depends on FILE_LOCKING 292 select GRACE_PERIOD 293 294config LOCKD_V4 295 bool 296 depends on NFSD_V3 || NFS_V3 297 depends on FILE_LOCKING 298 default y 299 300config NFS_ACL_SUPPORT 301 tristate 302 select FS_POSIX_ACL 303 304config NFS_COMMON 305 bool 306 depends on NFSD || NFS_FS || LOCKD 307 default y 308 309source "net/sunrpc/Kconfig" 310source "fs/ceph/Kconfig" 311source "fs/cifs/Kconfig" 312source "fs/coda/Kconfig" 313source "fs/afs/Kconfig" 314source "fs/9p/Kconfig" 315 316endif # NETWORK_FILESYSTEMS 317 318source "fs/nls/Kconfig" 319source "fs/dlm/Kconfig" 320source "fs/unicode/Kconfig" 321 322endmenu 323