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
  44 config 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
  62 config 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.
  73 config FS_DAX_LIMITED
  74         bool
  75
  76 endif # 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 #
  83 config FS_POSIX_ACL
  84         def_bool n
  85
  86 config EXPORTFS
  87         tristate
  88
  89 config 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
  95 config 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
 103 config 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
 113 source "fs/crypto/Kconfig"
 114
 115 source "fs/verity/Kconfig"
 116
 117 source "fs/notify/Kconfig"
 118
 119 source "fs/quota/Kconfig"
 120
 121 source "fs/autofs/Kconfig"
 122 source "fs/fuse/Kconfig"
 123 source "fs/overlayfs/Kconfig"
 124
 125 menu "Caches"
 126
 127 source "fs/fscache/Kconfig"
 128 source "fs/cachefiles/Kconfig"
 129
 130 endmenu
 131
 132 if BLOCK
 133 menu "CD-ROM/DVD Filesystems"
 134
 135 source "fs/isofs/Kconfig"
 136 source "fs/udf/Kconfig"
 137
 138 endmenu
 139 endif # BLOCK
 140
 141 if BLOCK
 142 menu "DOS/FAT/NT Filesystems"
 143
 144 source "fs/fat/Kconfig"
 145 source "fs/ntfs/Kconfig"
 146
 147 endmenu
 148 endif # BLOCK
 149
 150 menu "Pseudo filesystems"
 151
 152 source "fs/proc/Kconfig"
 153 source "fs/kernfs/Kconfig"
 154 source "fs/sysfs/Kconfig"
 155
 156 config 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
 169 config 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
 187 config 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
 202 config 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
 213 config HUGETLB_PAGE
 214         def_bool HUGETLBFS
 215
 216 config MEMFD_CREATE
 217         def_bool TMPFS || HUGETLBFS
 218
 219 config ARCH_HAS_GIGANTIC_PAGE
 220         bool
 221
 222 source "fs/configfs/Kconfig"
 223 source "fs/efivarfs/Kconfig"
 224
 225 endmenu
 226
 227 menuconfig 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
 240 if MISC_FILESYSTEMS
 241
 242 source "fs/orangefs/Kconfig"
 243 source "fs/adfs/Kconfig"
 244 source "fs/affs/Kconfig"
 245 source "fs/ecryptfs/Kconfig"
 246 source "fs/hfs/Kconfig"
 247 source "fs/hfsplus/Kconfig"
 248 source "fs/befs/Kconfig"
 249 source "fs/bfs/Kconfig"
 250 source "fs/efs/Kconfig"
 251 source "fs/jffs2/Kconfig"
 252 # UBIFS File system configuration
 253 source "fs/ubifs/Kconfig"
 254 source "fs/cramfs/Kconfig"
 255 source "fs/squashfs/Kconfig"
 256 source "fs/freevxfs/Kconfig"
 257 source "fs/minix/Kconfig"
 258 source "fs/omfs/Kconfig"
 259 source "fs/hpfs/Kconfig"
 260 source "fs/qnx4/Kconfig"
 261 source "fs/qnx6/Kconfig"
 262 source "fs/romfs/Kconfig"
 263 source "fs/pstore/Kconfig"
 264 source "fs/sysv/Kconfig"
 265 source "fs/ufs/Kconfig"
 266 source "fs/erofs/Kconfig"
 267
 268 endif # MISC_FILESYSTEMS
 269
 270 menuconfig 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
 284 if NETWORK_FILESYSTEMS
 285
 286 source "fs/nfs/Kconfig"
 287 source "fs/nfsd/Kconfig"
 288
 289 config GRACE_PERIOD
 290         tristate
 291
 292 config LOCKD
 293         tristate
 294         depends on FILE_LOCKING
 295         select GRACE_PERIOD
 296
 297 config LOCKD_V4
 298         bool
 299         depends on NFSD_V3 || NFS_V3
 300         depends on FILE_LOCKING
 301         default y
 302
 303 config NFS_ACL_SUPPORT
 304         tristate
 305         select FS_POSIX_ACL
 306
 307 config NFS_COMMON
 308         bool
 309         depends on NFSD || NFS_FS || LOCKD
 310         default y
 311
 312 source "net/sunrpc/Kconfig"
 313 source "fs/ceph/Kconfig"
 314 source "fs/cifs/Kconfig"
 315 source "fs/coda/Kconfig"
 316 source "fs/afs/Kconfig"
 317 source "fs/9p/Kconfig"
 318
 319 endif # NETWORK_FILESYSTEMS
 320
 321 source "fs/nls/Kconfig"
 322 source "fs/dlm/Kconfig"
 323 source "fs/unicode/Kconfig"
 324
 325 endmenu