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         help
  14           Enable this to perform validation of the parameter description for a
  15           filesystem when it is registered.
  16
  17 if BLOCK
  18
  19 config FS_IOMAP
  20         bool
  21
  22 source "fs/ext2/Kconfig"
  23 source "fs/ext4/Kconfig"
  24 source "fs/jbd2/Kconfig"
  25
  26 config FS_MBCACHE
  27 # Meta block cache for Extended Attributes (ext2/ext3/ext4)
  28         tristate
  29         default y if EXT2_FS=y && EXT2_FS_XATTR
  30         default y if EXT4_FS=y
  31         default m if EXT2_FS_XATTR || EXT4_FS
  32
  33 source "fs/reiserfs/Kconfig"
  34 source "fs/jfs/Kconfig"
  35
  36 source "fs/xfs/Kconfig"
  37 source "fs/gfs2/Kconfig"
  38 source "fs/ocfs2/Kconfig"
  39 source "fs/btrfs/Kconfig"
  40 source "fs/nilfs2/Kconfig"
  41 source "fs/f2fs/Kconfig"
  42
  43 config FS_DAX
  44         bool "Direct Access (DAX) support"
  45         depends on MMU
  46         depends on !(ARM || MIPS || SPARC)
  47         select DEV_PAGEMAP_OPS if (ZONE_DEVICE && !FS_DAX_LIMITED)
  48         select FS_IOMAP
  49         select DAX
  50         help
  51           Direct Access (DAX) can be used on memory-backed block devices.
  52           If the block device supports DAX and the filesystem supports DAX,
  53           then you can avoid using the pagecache to buffer I/Os.  Turning
  54           on this option will compile in support for DAX; you will need to
  55           mount the filesystem using the -o dax option.
  56
  57           If you do not have a block device that is capable of using this,
  58           or if unsure, say N.  Saying Y will increase the size of the kernel
  59           by about 5kB.
  60
  61 config FS_DAX_PMD
  62         bool
  63         default FS_DAX
  64         depends on FS_DAX
  65         depends on ZONE_DEVICE
  66         depends on TRANSPARENT_HUGEPAGE
  67
  68 # Selected by DAX drivers that do not expect filesystem DAX to support
  69 # get_user_pages() of DAX mappings. I.e. "limited" indicates no support
  70 # for fork() of processes with MAP_SHARED mappings or support for
  71 # direct-I/O to a DAX mapping.
  72 config FS_DAX_LIMITED
  73         bool
  74
  75 endif # BLOCK
  76
  77 # Posix ACL utility routines
  78 #
  79 # Note: Posix ACLs can be implemented without these helpers.  Never use
  80 # this symbol for ifdefs in core code.
  81 #
  82 config FS_POSIX_ACL
  83         def_bool n
  84
  85 config EXPORTFS
  86         tristate
  87
  88 config EXPORTFS_BLOCK_OPS
  89         bool "Enable filesystem export operations for block IO"
  90         help
  91           This option enables the export operations for a filesystem to support
  92           external block IO.
  93
  94 config FILE_LOCKING
  95         bool "Enable POSIX file locking API" if EXPERT
  96         default y
  97         help
  98           This option enables standard file locking support, required
  99           for filesystems like NFS and for the flock() system
 100           call. Disabling this option saves about 11k.
 101
 102 config MANDATORY_FILE_LOCKING
 103         bool "Enable Mandatory file locking"
 104         depends on FILE_LOCKING
 105         default y
 106         help
 107           This option enables files appropriately marked files on appropriely
 108           mounted filesystems to support mandatory locking.
 109
 110           To the best of my knowledge this is dead code that no one cares about.
 111
 112 source "fs/crypto/Kconfig"
 113
 114 source "fs/notify/Kconfig"
 115
 116 source "fs/quota/Kconfig"
 117
 118 source "fs/autofs/Kconfig"
 119 source "fs/fuse/Kconfig"
 120 source "fs/overlayfs/Kconfig"
 121
 122 menu "Caches"
 123
 124 source "fs/fscache/Kconfig"
 125 source "fs/cachefiles/Kconfig"
 126
 127 endmenu
 128
 129 if BLOCK
 130 menu "CD-ROM/DVD Filesystems"
 131
 132 source "fs/isofs/Kconfig"
 133 source "fs/udf/Kconfig"
 134
 135 endmenu
 136 endif # BLOCK
 137
 138 if BLOCK
 139 menu "DOS/FAT/NT Filesystems"
 140
 141 source "fs/fat/Kconfig"
 142 source "fs/ntfs/Kconfig"
 143
 144 endmenu
 145 endif # BLOCK
 146
 147 menu "Pseudo filesystems"
 148
 149 source "fs/proc/Kconfig"
 150 source "fs/kernfs/Kconfig"
 151 source "fs/sysfs/Kconfig"
 152
 153 config TMPFS
 154         bool "Tmpfs virtual memory file system support (former shm fs)"
 155         depends on SHMEM
 156         help
 157           Tmpfs is a file system which keeps all files in virtual memory.
 158
 159           Everything in tmpfs is temporary in the sense that no files will be
 160           created on your hard drive. The files live in memory and swap
 161           space. If you unmount a tmpfs instance, everything stored therein is
 162           lost.
 163
 164           See <file:Documentation/filesystems/tmpfs.txt> for details.
 165
 166 config TMPFS_POSIX_ACL
 167         bool "Tmpfs POSIX Access Control Lists"
 168         depends on TMPFS
 169         select TMPFS_XATTR
 170         select FS_POSIX_ACL
 171         help
 172           POSIX Access Control Lists (ACLs) support additional access rights
 173           for users and groups beyond the standard owner/group/world scheme,
 174           and this option selects support for ACLs specifically for tmpfs
 175           filesystems.
 176
 177           If you've selected TMPFS, it's possible that you'll also need
 178           this option as there are a number of Linux distros that require
 179           POSIX ACL support under /dev for certain features to work properly.
 180           For example, some distros need this feature for ALSA-related /dev
 181           files for sound to work properly.  In short, if you're not sure,
 182           say Y.
 183
 184 config TMPFS_XATTR
 185         bool "Tmpfs extended attributes"
 186         depends on TMPFS
 187         default n
 188         help
 189           Extended attributes are name:value pairs associated with inodes by
 190           the kernel or by users (see the attr(5) manual page for details).
 191
 192           Currently this enables support for the trusted.* and
 193           security.* namespaces.
 194
 195           You need this for POSIX ACL support on tmpfs.
 196
 197           If unsure, say N.
 198
 199 config HUGETLBFS
 200         bool "HugeTLB file system support"
 201         depends on X86 || IA64 || SPARC64 || (S390 && 64BIT) || \
 202                    SYS_SUPPORTS_HUGETLBFS || BROKEN
 203         help
 204           hugetlbfs is a filesystem backing for HugeTLB pages, based on
 205           ramfs. For architectures that support it, say Y here and read
 206           <file:Documentation/admin-guide/mm/hugetlbpage.rst> for details.
 207
 208           If unsure, say N.
 209
 210 config HUGETLB_PAGE
 211         def_bool HUGETLBFS
 212
 213 config MEMFD_CREATE
 214         def_bool TMPFS || HUGETLBFS
 215
 216 config ARCH_HAS_GIGANTIC_PAGE
 217         bool
 218
 219 source "fs/configfs/Kconfig"
 220 source "fs/efivarfs/Kconfig"
 221
 222 endmenu
 223
 224 menuconfig MISC_FILESYSTEMS
 225         bool "Miscellaneous filesystems"
 226         default y
 227         ---help---
 228           Say Y here to get to see options for various miscellaneous
 229           filesystems, such as filesystems that came from other
 230           operating systems.
 231
 232           This option alone does not add any kernel code.
 233
 234           If you say N, all options in this submenu will be skipped and
 235           disabled; if unsure, say Y here.
 236
 237 if MISC_FILESYSTEMS
 238
 239 source "fs/orangefs/Kconfig"
 240 source "fs/adfs/Kconfig"
 241 source "fs/affs/Kconfig"
 242 source "fs/ecryptfs/Kconfig"
 243 source "fs/hfs/Kconfig"
 244 source "fs/hfsplus/Kconfig"
 245 source "fs/befs/Kconfig"
 246 source "fs/bfs/Kconfig"
 247 source "fs/efs/Kconfig"
 248 source "fs/jffs2/Kconfig"
 249 # UBIFS File system configuration
 250 source "fs/ubifs/Kconfig"
 251 source "fs/cramfs/Kconfig"
 252 source "fs/squashfs/Kconfig"
 253 source "fs/freevxfs/Kconfig"
 254 source "fs/minix/Kconfig"
 255 source "fs/omfs/Kconfig"
 256 source "fs/hpfs/Kconfig"
 257 source "fs/qnx4/Kconfig"
 258 source "fs/qnx6/Kconfig"
 259 source "fs/romfs/Kconfig"
 260 source "fs/pstore/Kconfig"
 261 source "fs/sysv/Kconfig"
 262 source "fs/ufs/Kconfig"
 263
 264 endif # MISC_FILESYSTEMS
 265
 266 menuconfig NETWORK_FILESYSTEMS
 267         bool "Network File Systems"
 268         default y
 269         depends on NET
 270         ---help---
 271           Say Y here to get to see options for network filesystems and
 272           filesystem-related networking code, such as NFS daemon and
 273           RPCSEC security modules.
 274
 275           This option alone does not add any kernel code.
 276
 277           If you say N, all options in this submenu will be skipped and
 278           disabled; if unsure, say Y here.
 279
 280 if NETWORK_FILESYSTEMS
 281
 282 source "fs/nfs/Kconfig"
 283 source "fs/nfsd/Kconfig"
 284
 285 config GRACE_PERIOD
 286         tristate
 287
 288 config LOCKD
 289         tristate
 290         depends on FILE_LOCKING
 291         select GRACE_PERIOD
 292
 293 config LOCKD_V4
 294         bool
 295         depends on NFSD_V3 || NFS_V3
 296         depends on FILE_LOCKING
 297         default y
 298
 299 config NFS_ACL_SUPPORT
 300         tristate
 301         select FS_POSIX_ACL
 302
 303 config NFS_COMMON
 304         bool
 305         depends on NFSD || NFS_FS || LOCKD
 306         default y
 307
 308 source "net/sunrpc/Kconfig"
 309 source "fs/ceph/Kconfig"
 310 source "fs/cifs/Kconfig"
 311 source "fs/coda/Kconfig"
 312 source "fs/afs/Kconfig"
 313 source "fs/9p/Kconfig"
 314
 315 endif # NETWORK_FILESYSTEMS
 316
 317 source "fs/nls/Kconfig"
 318 source "fs/dlm/Kconfig"
 319
 320 endmenu