1 # SPDX-License-Identifier: GPL-2.0-only 2 # 3 # File system configuration 4 # 5 6 menu "File systems" 7 8 # Use unaligned word dcache accesses 9 config DCACHE_WORD_ACCESS 10 bool 11 12 config 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 18 if BLOCK 19 20 config FS_IOMAP 21 bool 22 23 source "fs/ext2/Kconfig" 24 source "fs/ext4/Kconfig" 25 source "fs/jbd2/Kconfig" 26 27 config 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 34 source "fs/reiserfs/Kconfig" 35 source "fs/jfs/Kconfig" 36 37 source "fs/xfs/Kconfig" 38 source "fs/gfs2/Kconfig" 39 source "fs/ocfs2/Kconfig" 40 source "fs/btrfs/Kconfig" 41 source "fs/nilfs2/Kconfig" 42 source "fs/f2fs/Kconfig" 43 source "fs/zonefs/Kconfig" 44 45 config 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 63 config 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. 74 config FS_DAX_LIMITED 75 bool 76 77 endif # 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 # 84 config FS_POSIX_ACL 85 def_bool n 86 87 config EXPORTFS 88 tristate 89 90 config 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 96 config 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. 103 104 config 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. 113 114 source "fs/crypto/Kconfig" 115 116 source "fs/verity/Kconfig" 117 118 source "fs/notify/Kconfig" 119 120 source "fs/quota/Kconfig" 121 122 source "fs/autofs/Kconfig" 123 source "fs/fuse/Kconfig" 124 source "fs/overlayfs/Kconfig" 125 126 menu "Caches" 127 128 source "fs/fscache/Kconfig" 129 source "fs/cachefiles/Kconfig" 130 131 endmenu 132 133 if BLOCK 134 menu "CD-ROM/DVD Filesystems" 135 136 source "fs/isofs/Kconfig" 137 source "fs/udf/Kconfig" 138 139 endmenu 140 endif # BLOCK 141 142 if BLOCK 143 menu "DOS/FAT/NT Filesystems" 144 145 source "fs/fat/Kconfig" 146 source "fs/ntfs/Kconfig" 147 148 endmenu 149 endif # BLOCK 150 151 menu "Pseudo filesystems" 152 153 source "fs/proc/Kconfig" 154 source "fs/kernfs/Kconfig" 155 source "fs/sysfs/Kconfig" 156 157 config 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. 169 170 config 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. 187 188 config 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. 202 203 config 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. 213 214 config HUGETLB_PAGE 215 def_bool HUGETLBFS 216 217 config MEMFD_CREATE 218 def_bool TMPFS || HUGETLBFS 219 220 config ARCH_HAS_GIGANTIC_PAGE 221 bool 222 223 source "fs/configfs/Kconfig" 224 source "fs/efivarfs/Kconfig" 225 226 endmenu 227 228 menuconfig 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. 240 241 if MISC_FILESYSTEMS 242 243 source "fs/orangefs/Kconfig" 244 source "fs/adfs/Kconfig" 245 source "fs/affs/Kconfig" 246 source "fs/ecryptfs/Kconfig" 247 source "fs/hfs/Kconfig" 248 source "fs/hfsplus/Kconfig" 249 source "fs/befs/Kconfig" 250 source "fs/bfs/Kconfig" 251 source "fs/efs/Kconfig" 252 source "fs/jffs2/Kconfig" 253 # UBIFS File system configuration 254 source "fs/ubifs/Kconfig" 255 source "fs/cramfs/Kconfig" 256 source "fs/squashfs/Kconfig" 257 source "fs/freevxfs/Kconfig" 258 source "fs/minix/Kconfig" 259 source "fs/omfs/Kconfig" 260 source "fs/hpfs/Kconfig" 261 source "fs/qnx4/Kconfig" 262 source "fs/qnx6/Kconfig" 263 source "fs/romfs/Kconfig" 264 source "fs/pstore/Kconfig" 265 source "fs/sysv/Kconfig" 266 source "fs/ufs/Kconfig" 267 source "fs/erofs/Kconfig" 268 source "fs/vboxsf/Kconfig" 269 270 endif # MISC_FILESYSTEMS 271 272 menuconfig 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. 285 286 if NETWORK_FILESYSTEMS 287 288 source "fs/nfs/Kconfig" 289 source "fs/nfsd/Kconfig" 290 291 config GRACE_PERIOD 292 tristate 293 294 config LOCKD 295 tristate 296 depends on FILE_LOCKING 297 select GRACE_PERIOD 298 299 config LOCKD_V4 300 bool 301 depends on NFSD_V3 || NFS_V3 302 depends on FILE_LOCKING 303 default y 304 305 config NFS_ACL_SUPPORT 306 tristate 307 select FS_POSIX_ACL 308 309 config NFS_COMMON 310 bool 311 depends on NFSD || NFS_FS || LOCKD 312 default y 313 314 source "net/sunrpc/Kconfig" 315 source "fs/ceph/Kconfig" 316 source "fs/cifs/Kconfig" 317 source "fs/coda/Kconfig" 318 source "fs/afs/Kconfig" 319 source "fs/9p/Kconfig" 320 321 endif # NETWORK_FILESYSTEMS 322 323 source "fs/nls/Kconfig" 324 source "fs/dlm/Kconfig" 325 source "fs/unicode/Kconfig" 326 327 config IO_WQ 328 bool 329 330 endmenu 331