fs/Kconfig

   1 #
   2 # File system configuration
   3 #
   4
   5 menu "File systems"
   6
   7 # Use unaligned word dcache accesses
   8 config DCACHE_WORD_ACCESS
   9        bool
  10
  11 config VALIDATE_FS_PARSER
  12         bool "Validate filesystem parameter description"
  13         default y
  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/notify/Kconfig"
 116
 117 source "fs/quota/Kconfig"
 118
 119 source "fs/autofs/Kconfig"
 120 source "fs/fuse/Kconfig"
 121 source "fs/overlayfs/Kconfig"
 122
 123 menu "Caches"
 124
 125 source "fs/fscache/Kconfig"
 126 source "fs/cachefiles/Kconfig"
 127
 128 endmenu
 129
 130 if BLOCK
 131 menu "CD-ROM/DVD Filesystems"
 132
 133 source "fs/isofs/Kconfig"
 134 source "fs/udf/Kconfig"
 135
 136 endmenu
 137 endif # BLOCK
 138
 139 if BLOCK
 140 menu "DOS/FAT/NT Filesystems"
 141
 142 source "fs/fat/Kconfig"
 143 source "fs/ntfs/Kconfig"
 144
 145 endmenu
 146 endif # BLOCK
 147
 148 menu "Pseudo filesystems"
 149
 150 source "fs/proc/Kconfig"
 151 source "fs/kernfs/Kconfig"
 152 source "fs/sysfs/Kconfig"
 153
 154 config 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
 167 config 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
 185 config 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
 200 config 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
 211 config HUGETLB_PAGE
 212         def_bool HUGETLBFS
 213
 214 config MEMFD_CREATE
 215         def_bool TMPFS || HUGETLBFS
 216
 217 config ARCH_HAS_GIGANTIC_PAGE
 218         bool
 219
 220 source "fs/configfs/Kconfig"
 221 source "fs/efivarfs/Kconfig"
 222
 223 endmenu
 224
 225 menuconfig 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
 238 if MISC_FILESYSTEMS
 239
 240 source "fs/orangefs/Kconfig"
 241 source "fs/adfs/Kconfig"
 242 source "fs/affs/Kconfig"
 243 source "fs/ecryptfs/Kconfig"
 244 source "fs/hfs/Kconfig"
 245 source "fs/hfsplus/Kconfig"
 246 source "fs/befs/Kconfig"
 247 source "fs/bfs/Kconfig"
 248 source "fs/efs/Kconfig"
 249 source "fs/jffs2/Kconfig"
 250 # UBIFS File system configuration
 251 source "fs/ubifs/Kconfig"
 252 source "fs/cramfs/Kconfig"
 253 source "fs/squashfs/Kconfig"
 254 source "fs/freevxfs/Kconfig"
 255 source "fs/minix/Kconfig"
 256 source "fs/omfs/Kconfig"
 257 source "fs/hpfs/Kconfig"
 258 source "fs/qnx4/Kconfig"
 259 source "fs/qnx6/Kconfig"
 260 source "fs/romfs/Kconfig"
 261 source "fs/pstore/Kconfig"
 262 source "fs/sysv/Kconfig"
 263 source "fs/ufs/Kconfig"
 264
 265 endif # MISC_FILESYSTEMS
 266
 267 menuconfig 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
 281 if NETWORK_FILESYSTEMS
 282
 283 source "fs/nfs/Kconfig"
 284 source "fs/nfsd/Kconfig"
 285
 286 config GRACE_PERIOD
 287         tristate
 288
 289 config LOCKD
 290         tristate
 291         depends on FILE_LOCKING
 292         select GRACE_PERIOD
 293
 294 config LOCKD_V4
 295         bool
 296         depends on NFSD_V3 || NFS_V3
 297         depends on FILE_LOCKING
 298         default y
 299
 300 config NFS_ACL_SUPPORT
 301         tristate
 302         select FS_POSIX_ACL
 303
 304 config NFS_COMMON
 305         bool
 306         depends on NFSD || NFS_FS || LOCKD
 307         default y
 308
 309 source "net/sunrpc/Kconfig"
 310 source "fs/ceph/Kconfig"
 311 source "fs/cifs/Kconfig"
 312 source "fs/coda/Kconfig"
 313 source "fs/afs/Kconfig"
 314 source "fs/9p/Kconfig"
 315
 316 endif # NETWORK_FILESYSTEMS
 317
 318 source "fs/nls/Kconfig"
 319 source "fs/dlm/Kconfig"
 320
 321 endmenu