fs/Kconfig

   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/EXFAT/NT Filesystems"
 144
 145 source "fs/fat/Kconfig"
 146 source "fs/exfat/Kconfig"
 147 source "fs/ntfs/Kconfig"
 148
 149 endmenu
 150 endif # BLOCK
 151
 152 menu "Pseudo filesystems"
 153
 154 source "fs/proc/Kconfig"
 155 source "fs/kernfs/Kconfig"
 156 source "fs/sysfs/Kconfig"
 157
 158 config 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
 171 config 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
 189 config 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
 204 config 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
 215 config HUGETLB_PAGE
 216         def_bool HUGETLBFS
 217
 218 config MEMFD_CREATE
 219         def_bool TMPFS || HUGETLBFS
 220
 221 config ARCH_HAS_GIGANTIC_PAGE
 222         bool
 223
 224 source "fs/configfs/Kconfig"
 225 source "fs/efivarfs/Kconfig"
 226
 227 endmenu
 228
 229 menuconfig 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
 242 if MISC_FILESYSTEMS
 243
 244 source "fs/orangefs/Kconfig"
 245 source "fs/adfs/Kconfig"
 246 source "fs/affs/Kconfig"
 247 source "fs/ecryptfs/Kconfig"
 248 source "fs/hfs/Kconfig"
 249 source "fs/hfsplus/Kconfig"
 250 source "fs/befs/Kconfig"
 251 source "fs/bfs/Kconfig"
 252 source "fs/efs/Kconfig"
 253 source "fs/jffs2/Kconfig"
 254 # UBIFS File system configuration
 255 source "fs/ubifs/Kconfig"
 256 source "fs/cramfs/Kconfig"
 257 source "fs/squashfs/Kconfig"
 258 source "fs/freevxfs/Kconfig"
 259 source "fs/minix/Kconfig"
 260 source "fs/omfs/Kconfig"
 261 source "fs/hpfs/Kconfig"
 262 source "fs/qnx4/Kconfig"
 263 source "fs/qnx6/Kconfig"
 264 source "fs/romfs/Kconfig"
 265 source "fs/pstore/Kconfig"
 266 source "fs/sysv/Kconfig"
 267 source "fs/ufs/Kconfig"
 268 source "fs/erofs/Kconfig"
 269 source "fs/vboxsf/Kconfig"
 270
 271 endif # MISC_FILESYSTEMS
 272
 273 menuconfig 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
 287 if NETWORK_FILESYSTEMS
 288
 289 source "fs/nfs/Kconfig"
 290 source "fs/nfsd/Kconfig"
 291
 292 config GRACE_PERIOD
 293         tristate
 294
 295 config LOCKD
 296         tristate
 297         depends on FILE_LOCKING
 298         select GRACE_PERIOD
 299
 300 config LOCKD_V4
 301         bool
 302         depends on NFSD_V3 || NFS_V3
 303         depends on FILE_LOCKING
 304         default y
 305
 306 config NFS_ACL_SUPPORT
 307         tristate
 308         select FS_POSIX_ACL
 309
 310 config NFS_COMMON
 311         bool
 312         depends on NFSD || NFS_FS || LOCKD
 313         default y
 314
 315 source "net/sunrpc/Kconfig"
 316 source "fs/ceph/Kconfig"
 317 source "fs/cifs/Kconfig"
 318 source "fs/coda/Kconfig"
 319 source "fs/afs/Kconfig"
 320 source "fs/9p/Kconfig"
 321
 322 endif # NETWORK_FILESYSTEMS
 323
 324 source "fs/nls/Kconfig"
 325 source "fs/dlm/Kconfig"
 326 source "fs/unicode/Kconfig"
 327
 328 config IO_WQ
 329         bool
 330
 331 endmenu