2 # File system configuration
7 # Use unaligned word dcache accesses
8 config DCACHE_WORD_ACCESS
16 source "fs/ext2/Kconfig"
17 source "fs/ext4/Kconfig"
18 source "fs/jbd2/Kconfig"
21 # Meta block cache for Extended Attributes (ext2/ext3/ext4)
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
27 source "fs/reiserfs/Kconfig"
28 source "fs/jfs/Kconfig"
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"
38 bool "Direct Access (DAX) support"
40 depends on !(ARM || MIPS || SPARC)
41 select DEV_PAGEMAP_OPS if (ZONE_DEVICE && !FS_DAX_LIMITED)
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.
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
59 depends on ZONE_DEVICE
60 depends on TRANSPARENT_HUGEPAGE
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.
71 # Posix ACL utility routines
73 # Note: Posix ACLs can be implemented without these helpers. Never use
74 # this symbol for ifdefs in core code.
82 config EXPORTFS_BLOCK_OPS
83 bool "Enable filesystem export operations for block IO"
85 This option enables the export operations for a filesystem to support
89 bool "Enable POSIX file locking API" if EXPERT
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.
96 config MANDATORY_FILE_LOCKING
97 bool "Enable Mandatory file locking"
98 depends on FILE_LOCKING
101 This option enables files appropriately marked files on appropriely
102 mounted filesystems to support mandatory locking.
104 To the best of my knowledge this is dead code that no one cares about.
106 source "fs/crypto/Kconfig"
108 source "fs/notify/Kconfig"
110 source "fs/quota/Kconfig"
112 source "fs/autofs/Kconfig"
113 source "fs/autofs4/Kconfig"
114 source "fs/fuse/Kconfig"
115 source "fs/overlayfs/Kconfig"
119 source "fs/fscache/Kconfig"
120 source "fs/cachefiles/Kconfig"
125 menu "CD-ROM/DVD Filesystems"
127 source "fs/isofs/Kconfig"
128 source "fs/udf/Kconfig"
134 menu "DOS/FAT/NT Filesystems"
136 source "fs/fat/Kconfig"
137 source "fs/ntfs/Kconfig"
142 menu "Pseudo filesystems"
144 source "fs/proc/Kconfig"
145 source "fs/kernfs/Kconfig"
146 source "fs/sysfs/Kconfig"
149 bool "Tmpfs virtual memory file system support (former shm fs)"
152 Tmpfs is a file system which keeps all files in virtual memory.
154 Everything in tmpfs is temporary in the sense that no files will be
155 created on your hard drive. The files live in memory and swap
156 space. If you unmount a tmpfs instance, everything stored therein is
159 See <file:Documentation/filesystems/tmpfs.txt> for details.
161 config TMPFS_POSIX_ACL
162 bool "Tmpfs POSIX Access Control Lists"
167 POSIX Access Control Lists (ACLs) support additional access rights
168 for users and groups beyond the standard owner/group/world scheme,
169 and this option selects support for ACLs specifically for tmpfs
172 If you've selected TMPFS, it's possible that you'll also need
173 this option as there are a number of Linux distros that require
174 POSIX ACL support under /dev for certain features to work properly.
175 For example, some distros need this feature for ALSA-related /dev
176 files for sound to work properly. In short, if you're not sure,
180 bool "Tmpfs extended attributes"
184 Extended attributes are name:value pairs associated with inodes by
185 the kernel or by users (see the attr(5) manual page for details).
187 Currently this enables support for the trusted.* and
188 security.* namespaces.
190 You need this for POSIX ACL support on tmpfs.
195 bool "HugeTLB file system support"
196 depends on X86 || IA64 || SPARC64 || (S390 && 64BIT) || \
197 SYS_SUPPORTS_HUGETLBFS || BROKEN
199 hugetlbfs is a filesystem backing for HugeTLB pages, based on
200 ramfs. For architectures that support it, say Y here and read
201 <file:Documentation/admin-guide/mm/hugetlbpage.rst> for details.
209 def_bool TMPFS || HUGETLBFS
211 config ARCH_HAS_GIGANTIC_PAGE
214 source "fs/configfs/Kconfig"
215 source "fs/efivarfs/Kconfig"
219 menuconfig MISC_FILESYSTEMS
220 bool "Miscellaneous filesystems"
223 Say Y here to get to see options for various miscellaneous
224 filesystems, such as filesystems that came from other
227 This option alone does not add any kernel code.
229 If you say N, all options in this submenu will be skipped and
230 disabled; if unsure, say Y here.
234 source "fs/orangefs/Kconfig"
235 source "fs/adfs/Kconfig"
236 source "fs/affs/Kconfig"
237 source "fs/ecryptfs/Kconfig"
238 source "fs/hfs/Kconfig"
239 source "fs/hfsplus/Kconfig"
240 source "fs/befs/Kconfig"
241 source "fs/bfs/Kconfig"
242 source "fs/efs/Kconfig"
243 source "fs/jffs2/Kconfig"
244 # UBIFS File system configuration
245 source "fs/ubifs/Kconfig"
246 source "fs/cramfs/Kconfig"
247 source "fs/squashfs/Kconfig"
248 source "fs/freevxfs/Kconfig"
249 source "fs/minix/Kconfig"
250 source "fs/omfs/Kconfig"
251 source "fs/hpfs/Kconfig"
252 source "fs/qnx4/Kconfig"
253 source "fs/qnx6/Kconfig"
254 source "fs/romfs/Kconfig"
255 source "fs/pstore/Kconfig"
256 source "fs/sysv/Kconfig"
257 source "fs/ufs/Kconfig"
258 source "fs/exofs/Kconfig"
260 endif # MISC_FILESYSTEMS
262 source "fs/exofs/Kconfig.ore"
264 menuconfig NETWORK_FILESYSTEMS
265 bool "Network File Systems"
269 Say Y here to get to see options for network filesystems and
270 filesystem-related networking code, such as NFS daemon and
271 RPCSEC security modules.
273 This option alone does not add any kernel code.
275 If you say N, all options in this submenu will be skipped and
276 disabled; if unsure, say Y here.
278 if NETWORK_FILESYSTEMS
280 source "fs/nfs/Kconfig"
281 source "fs/nfsd/Kconfig"
288 depends on FILE_LOCKING
293 depends on NFSD_V3 || NFS_V3
294 depends on FILE_LOCKING
297 config NFS_ACL_SUPPORT
303 depends on NFSD || NFS_FS || LOCKD
306 source "net/sunrpc/Kconfig"
307 source "fs/ceph/Kconfig"
308 source "fs/cifs/Kconfig"
309 source "fs/coda/Kconfig"
310 source "fs/afs/Kconfig"
311 source "fs/9p/Kconfig"
313 endif # NETWORK_FILESYSTEMS
315 source "fs/nls/Kconfig"
316 source "fs/dlm/Kconfig"