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         default y
  15         help
  16           Enable this to perform validation of the parameter description for a
  17           filesystem when it is registered.
  18
  19 if BLOCK
  20
  21 config FS_IOMAP
  22         bool
  23
  24 source "fs/ext2/Kconfig"
  25 source "fs/ext4/Kconfig"
  26 source "fs/jbd2/Kconfig"
  27
  28 config FS_MBCACHE
  29 # Meta block cache for Extended Attributes (ext2/ext3/ext4)
  30         tristate
  31         default y if EXT2_FS=y && EXT2_FS_XATTR
  32         default y if EXT4_FS=y
  33         default m if EXT2_FS_XATTR || EXT4_FS
  34
  35 source "fs/reiserfs/Kconfig"
  36 source "fs/jfs/Kconfig"
  37
  38 source "fs/xfs/Kconfig"
  39 source "fs/gfs2/Kconfig"
  40 source "fs/ocfs2/Kconfig"
  41 source "fs/btrfs/Kconfig"
  42 source "fs/nilfs2/Kconfig"
  43 source "fs/f2fs/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/notify/Kconfig"
 117
 118 source "fs/quota/Kconfig"
 119
 120 source "fs/autofs/Kconfig"
 121 source "fs/fuse/Kconfig"
 122 source "fs/overlayfs/Kconfig"
 123
 124 menu "Caches"
 125
 126 source "fs/fscache/Kconfig"
 127 source "fs/cachefiles/Kconfig"
 128
 129 endmenu
 130
 131 if BLOCK
 132 menu "CD-ROM/DVD Filesystems"
 133
 134 source "fs/isofs/Kconfig"
 135 source "fs/udf/Kconfig"
 136
 137 endmenu
 138 endif # BLOCK
 139
 140 if BLOCK
 141 menu "DOS/FAT/NT Filesystems"
 142
 143 source "fs/fat/Kconfig"
 144 source "fs/ntfs/Kconfig"
 145
 146 endmenu
 147 endif # BLOCK
 148
 149 menu "Pseudo filesystems"
 150
 151 source "fs/proc/Kconfig"
 152 source "fs/kernfs/Kconfig"
 153 source "fs/sysfs/Kconfig"
 154
 155 config TMPFS
 156         bool "Tmpfs virtual memory file system support (former shm fs)"
 157         depends on SHMEM
 158         help
 159           Tmpfs is a file system which keeps all files in virtual memory.
 160
 161           Everything in tmpfs is temporary in the sense that no files will be
 162           created on your hard drive. The files live in memory and swap
 163           space. If you unmount a tmpfs instance, everything stored therein is
 164           lost.
 165
 166           See <file:Documentation/filesystems/tmpfs.txt> for details.
 167
 168 config TMPFS_POSIX_ACL
 169         bool "Tmpfs POSIX Access Control Lists"
 170         depends on TMPFS
 171         select TMPFS_XATTR
 172         select FS_POSIX_ACL
 173         help
 174           POSIX Access Control Lists (ACLs) support additional access rights
 175           for users and groups beyond the standard owner/group/world scheme,
 176           and this option selects support for ACLs specifically for tmpfs
 177           filesystems.
 178
 179           If you've selected TMPFS, it's possible that you'll also need
 180           this option as there are a number of Linux distros that require
 181           POSIX ACL support under /dev for certain features to work properly.
 182           For example, some distros need this feature for ALSA-related /dev
 183           files for sound to work properly.  In short, if you're not sure,
 184           say Y.
 185
 186 config TMPFS_XATTR
 187         bool "Tmpfs extended attributes"
 188         depends on TMPFS
 189         default n
 190         help
 191           Extended attributes are name:value pairs associated with inodes by
 192           the kernel or by users (see the attr(5) manual page for details).
 193
 194           Currently this enables support for the trusted.* and
 195           security.* namespaces.
 196
 197           You need this for POSIX ACL support on tmpfs.
 198
 199           If unsure, say N.
 200
 201 config HUGETLBFS
 202         bool "HugeTLB file system support"
 203         depends on X86 || IA64 || SPARC64 || (S390 && 64BIT) || \
 204                    SYS_SUPPORTS_HUGETLBFS || BROKEN
 205         help
 206           hugetlbfs is a filesystem backing for HugeTLB pages, based on
 207           ramfs. For architectures that support it, say Y here and read
 208           <file:Documentation/admin-guide/mm/hugetlbpage.rst> for details.
 209
 210           If unsure, say N.
 211
 212 config HUGETLB_PAGE
 213         def_bool HUGETLBFS
 214
 215 config MEMFD_CREATE
 216         def_bool TMPFS || HUGETLBFS
 217
 218 config ARCH_HAS_GIGANTIC_PAGE
 219         bool
 220
 221 source "fs/configfs/Kconfig"
 222 source "fs/efivarfs/Kconfig"
 223
 224 endmenu
 225
 226 menuconfig MISC_FILESYSTEMS
 227         bool "Miscellaneous filesystems"
 228         default y
 229         ---help---
 230           Say Y here to get to see options for various miscellaneous
 231           filesystems, such as filesystems that came from other
 232           operating systems.
 233
 234           This option alone does not add any kernel code.
 235
 236           If you say N, all options in this submenu will be skipped and
 237           disabled; if unsure, say Y here.
 238
 239 if MISC_FILESYSTEMS
 240
 241 source "fs/orangefs/Kconfig"
 242 source "fs/adfs/Kconfig"
 243 source "fs/affs/Kconfig"
 244 source "fs/ecryptfs/Kconfig"
 245 source "fs/hfs/Kconfig"
 246 source "fs/hfsplus/Kconfig"
 247 source "fs/befs/Kconfig"
 248 source "fs/bfs/Kconfig"
 249 source "fs/efs/Kconfig"
 250 source "fs/jffs2/Kconfig"
 251 # UBIFS File system configuration
 252 source "fs/ubifs/Kconfig"
 253 source "fs/cramfs/Kconfig"
 254 source "fs/squashfs/Kconfig"
 255 source "fs/freevxfs/Kconfig"
 256 source "fs/minix/Kconfig"
 257 source "fs/omfs/Kconfig"
 258 source "fs/hpfs/Kconfig"
 259 source "fs/qnx4/Kconfig"
 260 source "fs/qnx6/Kconfig"
 261 source "fs/romfs/Kconfig"
 262 source "fs/pstore/Kconfig"
 263 source "fs/sysv/Kconfig"
 264 source "fs/ufs/Kconfig"
 265
 266 endif # MISC_FILESYSTEMS
 267
 268 menuconfig NETWORK_FILESYSTEMS
 269         bool "Network File Systems"
 270         default y
 271         depends on NET
 272         ---help---
 273           Say Y here to get to see options for network filesystems and
 274           filesystem-related networking code, such as NFS daemon and
 275           RPCSEC security modules.
 276
 277           This option alone does not add any kernel code.
 278
 279           If you say N, all options in this submenu will be skipped and
 280           disabled; if unsure, say Y here.
 281
 282 if NETWORK_FILESYSTEMS
 283
 284 source "fs/nfs/Kconfig"
 285 source "fs/nfsd/Kconfig"
 286
 287 config GRACE_PERIOD
 288         tristate
 289
 290 config LOCKD
 291         tristate
 292         depends on FILE_LOCKING
 293         select GRACE_PERIOD
 294
 295 config LOCKD_V4
 296         bool
 297         depends on NFSD_V3 || NFS_V3
 298         depends on FILE_LOCKING
 299         default y
 300
 301 config NFS_ACL_SUPPORT
 302         tristate
 303         select FS_POSIX_ACL
 304
 305 config NFS_COMMON
 306         bool
 307         depends on NFSD || NFS_FS || LOCKD
 308         default y
 309
 310 source "net/sunrpc/Kconfig"
 311 source "fs/ceph/Kconfig"
 312 source "fs/cifs/Kconfig"
 313 source "fs/coda/Kconfig"
 314 source "fs/afs/Kconfig"
 315 source "fs/9p/Kconfig"
 316
 317 endif # NETWORK_FILESYSTEMS
 318
 319 source "fs/nls/Kconfig"
 320 source "fs/dlm/Kconfig"
 321 source "fs/unicode/Kconfig"
 322
 323 endmenu