Amir Goldstein f168f1098d ovl: add support for "nfs_export" configuration ... Introduce the "nfs_export" config, module and mount options. The NFS export feature depends on the "index" feature and enables two implicit overlayfs features: "index_all" and "verify_lower". The "index_all" feature creates an index on copy up of every file and directory. The "verify_lower" feature uses the full index to detect overlay filesystems inconsistencies on lookup, like redirect from multiple upper dirs to the same lower dir. NFS export can be enabled for non-upper mount with no index. However, because lower layer redirects cannot be verified with the index, enabling NFS export support on an overlay with no upper layer requires turning off redirect follow (e.g. "redirect_dir=nofollow"). The full index may incur some overhead on mount time, especially when verifying that lower directory file handles are not stale. NFS export support, full index and consistency verification will be implemented by following patches. Signed-off-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>		2018-01-24 11:25:37 +01:00
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caching	fscache: remove unused ->now_uncached callback	2017-09-06 17:27:26 -07:00
cifs	CIFS/SMB3: Update documentation to reflect SMB3 and various changes	2017-09-17 10:48:00 -05:00
configfs	fs: configfs: don't return anything from drop_link	2016-12-01 10:50:49 +01:00
nfs	doc: ReSTify keys-request-key.txt	2017-05-18 10:33:51 -06:00
pohmelfs	Documentation: fix common spelling mistakes	2016-04-28 07:51:59 -06:00
00-INDEX	logfs: remove from tree	2016-12-14 23:48:11 -05:00
9p.txt	…
Locking	vfs: add flags to d_real()	2017-09-04 21:42:22 +02:00
adfs.txt	…
affs.txt	affs: add mount option to avoid filename truncates	2014-04-07 16:36:08 -07:00
afs.txt	afs: Fix documentation on # vs % prefix in mount source specification	2017-11-13 15:38:19 +00:00
autofs4-mount-control.txt	autofs: update ioctl documentation regarding struct autofs_dev_ioctl	2017-02-27 18:43:45 -08:00
autofs4.txt	Fix up over-eager 'wait_queue_t' renaming	2017-07-10 11:40:19 -07:00
automount-support.txt	Documentation: remove outdated information from automount-support.txt	2015-05-15 01:10:38 -04:00
befs.txt	…
bfs.txt	Tigran has moved	2017-05-12 15:57:15 -07:00
btrfs.txt	Documentation: btrfs: remove usage specific information	2016-03-11 17:02:09 +01:00
ceph.txt	ceph: set io_pages bdi hint	2017-02-20 12:16:05 +01:00
coda.txt	…
conf.py	docs-rst: convert filesystems book to ReST	2017-05-16 08:44:08 -03:00
cramfs.txt	cramfs: rehabilitate it	2017-10-15 00:47:23 -04:00
dax.txt	dax: use common 4k zero page for dax mmap reads	2017-09-06 17:27:24 -07:00
debugfs.txt	debugfs: Pass bool pointer to debugfs_create_bool()	2015-10-04 11:36:07 +01:00
devpts.txt	devpts: Make each mount of devpts an independent filesystem.	2016-06-05 10:36:01 -07:00
directory-locking	vfs: remove unused i_op->rename	2016-09-27 11:03:58 +02:00
dlmfs.txt	ocfs2: update web page + git tree in documentation	2015-02-28 09:57:50 -08:00
dnotify.txt	Documentation: fix selftests related file refs	2017-10-19 12:58:21 -06:00
ecryptfs.txt	…
efivarfs.txt	efi: Make efivarfs entries immutable by default	2016-02-10 16:25:52 +00:00
exofs.txt	…
ext2.txt	fs: Remove ext3 filesystem driver	2015-07-23 20:59:40 +02:00
ext3.txt	fs: Remove ext3 filesystem driver	2015-07-23 20:59:40 +02:00
ext4.txt	Documentation: fix little inconsistencies	2017-09-26 14:30:48 -06:00
f2fs.txt	f2fs: support journalled quota	2017-08-21 15:54:48 -07:00
fiemap.txt	fsioctl.c: make generic_block_fiemap() signal-tolerant	2015-02-10 14:30:30 -08:00
files.txt	…
fscrypt.rst	fscrypt: add a documentation file for filesystem-level encryption	2017-10-31 13:49:24 -04:00
fuse.txt	…
gfs2-glocks.txt	gfs2: Remove gl_spin define	2015-10-29 12:57:48 -05:00
gfs2-uevents.txt	…
gfs2.txt	…
hfs.txt	…
hfsplus.txt	Documentation: update URL to hfsplus Technote 1150	2014-02-20 14:48:51 +01:00
hpfs.txt	…
index.rst	fscrypt: add a documentation file for filesystem-level encryption	2017-10-31 13:49:24 -04:00
inotify.txt	inotify: update documentation to reflect code changes	2015-02-10 14:30:28 -08:00
isofs.txt	…
jfs.txt	…
locks.txt	docs: fix locations of several documents that got moved	2016-10-24 08:12:35 -02:00
mandatory-locking.txt	…
ncpfs.txt	…
nilfs2.txt	MAINTAINERS, nilfs2: change project home URLs	2018-01-13 10:42:48 -08:00
ntfs.txt	NTFS: Remove changelog from Documentation/filesystems/ntfs.txt.	2014-10-16 12:43:57 +01:00
ocfs2-online-filecheck.txt	Doc: ocfs: Fix typo in filesystems/ocfs2-online-filecheck.txt	2016-07-01 16:17:15 -06:00
ocfs2.txt	ocfs2: update web page + git tree in documentation	2015-02-28 09:57:50 -08:00
omfs.txt	…
orangefs.txt	orangefs: documentation clean up	2017-09-14 14:54:39 -04:00
overlayfs.txt	ovl: add support for "nfs_export" configuration	2018-01-24 11:25:37 +01:00
path-lookup.md	locking/atomics, doc/filesystems: Convert ACCESS_ONCE() references	2017-10-25 11:01:05 +02:00
path-lookup.txt	Documentation: add new description of path-name lookup.	2015-11-02 18:18:25 -07:00
porting	vfs: grab the lock instead of blocking in __fd_install during resizing	2017-11-05 18:58:07 -05:00
proc.txt	proc, coredump: add CoreDumping flag to /proc/pid/status	2017-11-17 16:10:00 -08:00
qnx6.txt	Documentation: fix common spelling mistakes	2016-04-28 07:51:59 -06:00
quota.txt	scripts/spelling.txt: add "an user" pattern and fix typo instances	2017-02-27 18:43:46 -08:00
ramfs-rootfs-initramfs.txt	…
relay.txt	…
romfs.txt	…
seq_file.txt	Documentation: update seq_file	2014-12-29 15:40:18 -07:00
sharedsubtree.txt	doc: fix grammar	2016-03-09 15:33:06 -07:00
spufs.txt	…
squashfs.txt	Squashfs: Add LZ4 compression configuration option	2014-11-27 18:48:44 +00:00
sysfs-pci.txt	PCI: Add pci_mmap_resource_range() and use it for ARM64	2017-04-20 08:47:47 -05:00
sysfs-tagging.txt	sysfs-tagging.txt: fix pre-kernfs references	2015-09-13 14:38:51 -06:00
sysfs.txt	driver core: remove DRIVER_ATTR	2017-09-19 09:20:33 +02:00
sysv-fs.txt	…
tmpfs.txt	Documenation: update cgroup's document path	2016-08-03 15:43:58 -06:00
ubifs.txt	…
udf.txt	udf: Remove some outdate references from documentation	2017-10-16 11:55:52 +02:00
ufs.txt	…
vfat.txt	fat: add config option to set UTF-8 mount option by default	2016-03-22 15:36:02 -07:00
vfs.txt	Merge branch 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs	2017-09-13 09:11:44 -07:00
xfs-delayed-logging-design.txt	…
xfs-self-describing-metadata.txt	…
xfs.txt	xfs: deprecate barrier/nobarrier mount option	2016-12-09 16:49:54 +11:00