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 if BLOCK
  12
  13 config FS_IOMAP
  14         bool
  15
  16 source "fs/ext2/Kconfig"
  17 source "fs/ext4/Kconfig"
  18 source "fs/jbd2/Kconfig"
  19
  20 config FS_MBCACHE
  21 # Meta block cache for Extended Attributes (ext2/ext3/ext4)
  22         tristate
  23         default y if EXT2_FS=y && EXT2_FS_XATTR
  24         default y if EXT4_FS=y
  25         default m if EXT2_FS_XATTR || EXT4_FS
  26
  27 source "fs/reiserfs/Kconfig"
  28 source "fs/jfs/Kconfig"
  29
  30 source "fs/xfs/Kconfig"
  31 source "fs/gfs2/Kconfig"
  32 source "fs/ocfs2/Kconfig"
  33 source "fs/btrfs/Kconfig"
  34 source "fs/nilfs2/Kconfig"
  35 source "fs/f2fs/Kconfig"
  36
  37 config FS_DAX
  38         bool "Direct Access (DAX) support"
  39         depends on MMU
  40         depends on !(ARM || MIPS || SPARC)
  41         select DEV_PAGEMAP_OPS if (ZONE_DEVICE && !FS_DAX_LIMITED)
  42         select FS_IOMAP
  43         select DAX
  44         help
  45           Direct Access (DAX) can be used on memory-backed block devices.
  46           If the block device supports DAX and the filesystem supports DAX,
  47           then you can avoid using the pagecache to buffer I/Os.  Turning
  48           on this option will compile in support for DAX; you will need to
  49           mount the filesystem using the -o dax option.
  50
  51           If you do not have a block device that is capable of using this,
  52           or if unsure, say N.  Saying Y will increase the size of the kernel
  53           by about 5kB.
  54
  55 config FS_DAX_PMD
  56         bool
  57         default FS_DAX
  58         depends on FS_DAX
  59         depends on ZONE_DEVICE
  60         depends on TRANSPARENT_HUGEPAGE
  61
  62 # Selected by DAX drivers that do not expect filesystem DAX to support
  63 # get_user_pages() of DAX mappings. I.e. "limited" indicates no support
  64 # for fork() of processes with MAP_SHARED mappings or support for
  65 # direct-I/O to a DAX mapping.
  66 config FS_DAX_LIMITED
  67         bool
  68
  69 endif # BLOCK
  70
  71 # Posix ACL utility routines
  72 #
  73 # Note: Posix ACLs can be implemented without these helpers.  Never use
  74 # this symbol for ifdefs in core code.
  75 #
  76 config FS_POSIX_ACL
  77         def_bool n
  78
  79 config EXPORTFS
  80         tristate
  81
  82 config EXPORTFS_BLOCK_OPS
  83         bool "Enable filesystem export operations for block IO"
  84         help
  85           This option enables the export operations for a filesystem to support
  86           external block IO.
  87
  88 config FILE_LOCKING
  89         bool "Enable POSIX file locking API" if EXPERT
  90         default y
  91         help
  92           This option enables standard file locking support, required
  93           for filesystems like NFS and for the flock() system
  94           call. Disabling this option saves about 11k.
  95
  96 config MANDATORY_FILE_LOCKING
  97         bool "Enable Mandatory file locking"
  98         depends on FILE_LOCKING
  99         default y
 100         help
 101           This option enables files appropriately marked files on appropriely
 102           mounted filesystems to support mandatory locking.
 103
 104           To the best of my knowledge this is dead code that no one cares about.
 105
 106 source "fs/crypto/Kconfig"
 107
 108 source "fs/notify/Kconfig"
 109
 110 source "fs/quota/Kconfig"
 111
 112 source "fs/autofs/Kconfig"
 113 source "fs/fuse/Kconfig"
 114 source "fs/overlayfs/Kconfig"
 115
 116 menu "Caches"
 117
 118 source "fs/fscache/Kconfig"
 119 source "fs/cachefiles/Kconfig"
 120
 121 endmenu
 122
 123 if BLOCK
 124 menu "CD-ROM/DVD Filesystems"
 125
 126 source "fs/isofs/Kconfig"
 127 source "fs/udf/Kconfig"
 128
 129 endmenu
 130 endif # BLOCK
 131
 132 if BLOCK
 133 menu "DOS/FAT/NT Filesystems"
 134
 135 source "fs/fat/Kconfig"
 136 source "fs/ntfs/Kconfig"
 137
 138 endmenu
 139 endif # BLOCK
 140
 141 menu "Pseudo filesystems"
 142
 143 source "fs/proc/Kconfig"
 144 source "fs/kernfs/Kconfig"
 145 source "fs/sysfs/Kconfig"
 146
 147 config TMPFS
 148         bool "Tmpfs virtual memory file system support (former shm fs)"
 149         depends on SHMEM
 150         help
 151           Tmpfs is a file system which keeps all files in virtual memory.
 152
 153           Everything in tmpfs is temporary in the sense that no files will be
 154           created on your hard drive. The files live in memory and swap
 155           space. If you unmount a tmpfs instance, everything stored therein is
 156           lost.
 157
 158           See <file:Documentation/filesystems/tmpfs.txt> for details.
 159
 160 config TMPFS_POSIX_ACL
 161         bool "Tmpfs POSIX Access Control Lists"
 162         depends on TMPFS
 163         select TMPFS_XATTR
 164         select FS_POSIX_ACL
 165         help
 166           POSIX Access Control Lists (ACLs) support additional access rights
 167           for users and groups beyond the standard owner/group/world scheme,
 168           and this option selects support for ACLs specifically for tmpfs
 169           filesystems.
 170
 171           If you've selected TMPFS, it's possible that you'll also need
 172           this option as there are a number of Linux distros that require
 173           POSIX ACL support under /dev for certain features to work properly.
 174           For example, some distros need this feature for ALSA-related /dev
 175           files for sound to work properly.  In short, if you're not sure,
 176           say Y.
 177
 178 config TMPFS_XATTR
 179         bool "Tmpfs extended attributes"
 180         depends on TMPFS
 181         default n
 182         help
 183           Extended attributes are name:value pairs associated with inodes by
 184           the kernel or by users (see the attr(5) manual page for details).
 185
 186           Currently this enables support for the trusted.* and
 187           security.* namespaces.
 188
 189           You need this for POSIX ACL support on tmpfs.
 190
 191           If unsure, say N.
 192
 193 config HUGETLBFS
 194         bool "HugeTLB file system support"
 195         depends on X86 || IA64 || SPARC64 || (S390 && 64BIT) || \
 196                    SYS_SUPPORTS_HUGETLBFS || BROKEN
 197         help
 198           hugetlbfs is a filesystem backing for HugeTLB pages, based on
 199           ramfs. For architectures that support it, say Y here and read
 200           <file:Documentation/admin-guide/mm/hugetlbpage.rst> for details.
 201
 202           If unsure, say N.
 203
 204 config HUGETLB_PAGE
 205         def_bool HUGETLBFS
 206
 207 config MEMFD_CREATE
 208         def_bool TMPFS || HUGETLBFS
 209
 210 config ARCH_HAS_GIGANTIC_PAGE
 211         bool
 212
 213 source "fs/configfs/Kconfig"
 214 source "fs/efivarfs/Kconfig"
 215
 216 endmenu
 217
 218 menuconfig MISC_FILESYSTEMS
 219         bool "Miscellaneous filesystems"
 220         default y
 221         ---help---
 222           Say Y here to get to see options for various miscellaneous
 223           filesystems, such as filesystems that came from other
 224           operating systems.
 225
 226           This option alone does not add any kernel code.
 227
 228           If you say N, all options in this submenu will be skipped and
 229           disabled; if unsure, say Y here.
 230
 231 if MISC_FILESYSTEMS
 232
 233 source "fs/orangefs/Kconfig"
 234 source "fs/adfs/Kconfig"
 235 source "fs/affs/Kconfig"
 236 source "fs/ecryptfs/Kconfig"
 237 source "fs/hfs/Kconfig"
 238 source "fs/hfsplus/Kconfig"
 239 source "fs/befs/Kconfig"
 240 source "fs/bfs/Kconfig"
 241 source "fs/efs/Kconfig"
 242 source "fs/jffs2/Kconfig"
 243 # UBIFS File system configuration
 244 source "fs/ubifs/Kconfig"
 245 source "fs/cramfs/Kconfig"
 246 source "fs/squashfs/Kconfig"
 247 source "fs/freevxfs/Kconfig"
 248 source "fs/minix/Kconfig"
 249 source "fs/omfs/Kconfig"
 250 source "fs/hpfs/Kconfig"
 251 source "fs/qnx4/Kconfig"
 252 source "fs/qnx6/Kconfig"
 253 source "fs/romfs/Kconfig"
 254 source "fs/pstore/Kconfig"
 255 source "fs/sysv/Kconfig"
 256 source "fs/ufs/Kconfig"
 257 source "fs/exofs/Kconfig"
 258
 259 endif # MISC_FILESYSTEMS
 260
 261 source "fs/exofs/Kconfig.ore"
 262
 263 menuconfig NETWORK_FILESYSTEMS
 264         bool "Network File Systems"
 265         default y
 266         depends on NET
 267         ---help---
 268           Say Y here to get to see options for network filesystems and
 269           filesystem-related networking code, such as NFS daemon and
 270           RPCSEC security modules.
 271
 272           This option alone does not add any kernel code.
 273
 274           If you say N, all options in this submenu will be skipped and
 275           disabled; if unsure, say Y here.
 276
 277 if NETWORK_FILESYSTEMS
 278
 279 source "fs/nfs/Kconfig"
 280 source "fs/nfsd/Kconfig"
 281
 282 config GRACE_PERIOD
 283         tristate
 284
 285 config LOCKD
 286         tristate
 287         depends on FILE_LOCKING
 288         select GRACE_PERIOD
 289
 290 config LOCKD_V4
 291         bool
 292         depends on NFSD_V3 || NFS_V3
 293         depends on FILE_LOCKING
 294         default y
 295
 296 config NFS_ACL_SUPPORT
 297         tristate
 298         select FS_POSIX_ACL
 299
 300 config NFS_COMMON
 301         bool
 302         depends on NFSD || NFS_FS || LOCKD
 303         default y
 304
 305 source "net/sunrpc/Kconfig"
 306 source "fs/ceph/Kconfig"
 307 source "fs/cifs/Kconfig"
 308 source "fs/coda/Kconfig"
 309 source "fs/afs/Kconfig"
 310 source "fs/9p/Kconfig"
 311
 312 endif # NETWORK_FILESYSTEMS
 313
 314 source "fs/nls/Kconfig"
 315 source "fs/dlm/Kconfig"
 316
 317 endmenu