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Vivek Goyal 45aebeaf4f ovl: Ensure upper filesystem supports d_type 
In some instances xfs has been created with ftype=0 and there if a file
on lower fs is removed, overlay leaves a whiteout in upper fs but that
whiteout does not get filtered out and is visible to overlayfs users.

And reason it does not get filtered out because upper filesystem does
not report file type of whiteout as DT_CHR during iterate_dir().

So it seems to be a requirement that upper filesystem support d_type for
overlayfs to work properly. Do this check during mount and fail if d_type
is not supported.

Suggested-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2016-03-21 17:31:45 +01:00
..
9p
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
adfs
fs/adfs/adfs.h: tidy up comments
2016-01-20 17:09:18 -08:00
affs
affs_do_readpage_ofs(): just use kmap_atomic() around memcpy()
2016-02-20 00:15:51 -05:00
afs
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
autofs4
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-03-19 18:52:29 -07:00
befs
kmemcg: account certain kmem allocations to memcg
2016-01-14 16:00:49 -08:00
bfs
kmemcg: account certain kmem allocations to memcg
2016-01-14 16:00:49 -08:00
btrfs
btrfs: use radix_tree_iter_retry()
2016-03-17 15:09:34 -07:00
cachefiles
CacheFiles: Provide read-and-reset release counters for cachefilesd
2016-02-01 12:30:10 -05:00
ceph
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-03-19 18:52:29 -07:00
cifs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-03-19 18:52:29 -07:00
coda
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-01-23 12:24:56 -08:00
configfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-03-19 18:52:29 -07:00
cramfs
don't put symlink bodies in pagecache into highmem
2015-12-08 22:41:36 -05:00
debugfs
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
devpts
pty: make sure super_block is still valid in final /dev/tty close
2016-02-06 23:45:46 -08:00
dlm
dlm for 4.6
2016-03-17 16:38:36 -07:00
ecryptfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-03-19 18:52:29 -07:00
efivarfs
efi: Make efivarfs entries immutable by default
2016-02-10 16:25:52 +00:00
efs
kmemcg: account certain kmem allocations to memcg
2016-01-14 16:00:49 -08:00
exofs
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
exportfs
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
ext2
Performance improvements in SEEK_DATA and xattr scalability
2016-03-17 16:31:18 -07:00
ext4
Performance improvements in SEEK_DATA and xattr scalability
2016-03-17 16:31:18 -07:00
f2fs
f2fs: Use skcipher
2016-01-27 20:35:55 +08:00
fat
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
freevxfs
don't put symlink bodies in pagecache into highmem
2015-12-08 22:41:36 -05:00
fscache
FS-Cache: Handle a write to the page immediately beyond the EOF marker
2015-11-11 02:11:02 -05:00
fuse
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
gfs2
GFS2: merge window
2016-03-17 16:51:32 -07:00
hfs
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
hfsplus
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
hostfs
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
hpfs
hpfs: don't truncate the file when delete fails
2016-02-27 19:15:51 -05:00
hugetlbfs
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
isofs
kmemcg: account certain kmem allocations to memcg
2016-01-14 16:00:49 -08:00
jbd2
jbd2: do not fail journal because of frozen_buffer allocation failure
2016-03-13 17:38:20 -04:00
jffs2
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-03-11 10:13:49 -08:00
jfs
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
kernfs
kernfs: make kernfs_walk_ns() use kernfs_pr_cont_buf[]
2016-02-07 20:21:35 -08:00
lockd
lockd: constify nlmsvc_binding structure
2016-01-07 10:10:50 -05:00
logfs
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
minix
kmemcg: account certain kmem allocations to memcg
2016-01-14 16:00:49 -08:00
ncpfs
ncpfs: fix a braino in OOM handling in ncp_fill_cache()
2016-03-07 22:25:16 -05:00
nfs
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-03-19 18:52:29 -07:00
nfs_common
…
nfsd
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-03-19 18:52:29 -07:00
nilfs2
mm: introduce page reference manipulation functions
2016-03-17 15:09:34 -07:00
nls
…
notify
fsnotify: turn fsnotify reaper thread into a workqueue job
2016-02-18 16:23:24 -08:00
ntfs
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
ocfs2
Configfs changes for the 4.6 merge window:
2016-03-17 16:25:46 -07:00
omfs
…
openpromfs
kmemcg: account certain kmem allocations to memcg
2016-01-14 16:00:49 -08:00
overlayfs
ovl: Ensure upper filesystem supports d_type
2016-03-21 17:31:45 +01:00
proc
proc-vmcore: wrong data type casting fix
2016-03-17 15:09:34 -07:00
pstore
pstore: Add support for 64 Bit address space
2016-03-10 09:43:36 -08:00
qnx4
kmemcg: account certain kmem allocations to memcg
2016-01-14 16:00:49 -08:00
qnx6
kmemcg: account certain kmem allocations to memcg
2016-01-14 16:00:49 -08:00
quota
quota: use lookup_one_len_unlocked()
2016-03-14 00:16:48 -04:00
ramfs
don't put symlink bodies in pagecache into highmem
2015-12-08 22:41:36 -05:00
reiserfs
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
romfs
kmemcg: account certain kmem allocations to memcg
2016-01-14 16:00:49 -08:00
squashfs
kmemcg: account certain kmem allocations to memcg
2016-01-14 16:00:49 -08:00
sysfs
platform/chrome: Branch for v4.4
2015-11-13 21:53:18 -08:00
sysv
kmemcg: account certain kmem allocations to memcg
2016-01-14 16:00:49 -08:00
tracefs
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
ubifs
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
udf
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-01-23 12:24:56 -08:00
ufs
kmemcg: account certain kmem allocations to memcg
2016-01-14 16:00:49 -08:00
xfs
mm: simplify lock_page_memcg()
2016-03-15 16:55:16 -07:00
aio.c
mm: move ->mremap() from file_operations to vm_operations_struct
2015-09-04 16:54:41 -07:00
anon_inodes.c
…
attr.c
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
bad_inode.c
fs/bad_inode.c: is_bad_inode can be boolean
2015-12-06 21:17:14 -05:00
binfmt_aout.c
…
binfmt_elf_fdpic.c
libnvdimm for 4.4:
2015-11-10 12:07:22 -08:00
binfmt_elf.c
mm: ASLR: use get_random_long()
2016-02-27 10:28:52 -08:00
binfmt_em86.c
…
binfmt_flat.c
…
binfmt_misc.c
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
binfmt_script.c
…
block_dev.c
Merge branch 'for-4.6/core' of git://git.kernel.dk/linux-block
2016-03-18 16:43:11 -07:00
buffer.c
mm: simplify lock_page_memcg()
2016-03-15 16:55:16 -07:00
char_dev.c
…
compat_binfmt_elf.c
…
compat_ioctl.c
Merge 4.5-rc4 into char-misc-next
2016-02-14 14:25:59 -08:00
compat.c
saner calling conventions for copy_mount_options()
2016-01-04 10:28:32 -05:00
coredump.c
fs/coredump: prevent "" / "." / ".." core path components
2016-01-20 17:09:18 -08:00
dax.c
dax: check return value of dax_radix_entry()
2016-03-09 15:43:42 -08:00
dcache.c
dcache.c: new helper: __d_add()
2016-03-14 00:17:38 -04:00
dcookies.c
…
direct-io.c
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2016-03-19 18:52:29 -07:00
drop_caches.c
…
eventfd.c
Documentation: filesystem: Fix typo in fs/eventfd.c
2015-12-08 14:52:03 +01:00
eventpoll.c
timer: convert timer_slack_ns from unsigned long to u64
2016-03-17 15:09:34 -07:00
exec.c
vfs: define kernel_copy_file_from_fd()
2016-02-21 09:06:10 -05:00
fcntl.c
fcntl: allow to set O_DIRECT flag on pipe
2016-01-09 02:55:37 -05:00
fhandle.c
…
file_table.c
…
file.c
kmemcg: account certain kmem allocations to memcg
2016-01-14 16:00:49 -08:00
filesystems.c
find_filesystem(): simplify comparison
2016-01-19 12:02:23 -05:00
fs_pin.c
…
fs_struct.c
…
fs-writeback.c
writeback: flush inode cgroup wb switches instead of pinning super_block
2016-03-03 14:42:50 -07:00
inode.c
writeback: initialize inode members that track writeback history
2016-02-16 14:57:21 -07:00
internal.h
Merge branch 'for-linus' into work.misc
2016-01-08 21:20:11 -05:00
ioctl.c
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
Kconfig
dax: re-enable dax pmd mappings
2016-01-15 17:56:32 -08:00
Kconfig.binfmt
…
libfs.c
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
locks.c
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
Makefile
mbcache2: rename to mbcache
2016-02-22 22:35:22 -05:00
mbcache.c
mbcache: add reusable flag to cache entries
2016-02-22 22:44:04 -05:00
mount.h
…
mpage.c
fs/mpage.c:mpage_readpages(): use lru_to_page() helper
2016-03-15 16:55:16 -07:00
namei.c
kill dentry_unhash()
2016-03-14 00:16:33 -04:00
namespace.c
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
no-block.c
…
nsfs.c
fs/seq_file: convert int seq_vprint/seq_printf/etc... returns to void
2015-09-11 15:21:34 -07:00
open.c
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
pipe.c
pipe: limit the per-user amount of pages allocated in pipes
2016-01-19 19:25:21 -05:00
pnode.c
fs/pnode.c: treat zero mnt_group_id-s as unequal
2016-02-20 00:15:52 -05:00
pnode.h
…
posix_acl.c
xattr handlers: Simplify list operation
2015-12-13 19:46:12 -05:00
proc_namespace.c
vfs: show_vfsstat: do not ignore errors from show_devname method
2016-03-16 13:09:08 -04:00
read_write.c
Merge branches 'work.lookups', 'work.misc' and 'work.preadv2' into for-next
2016-03-18 16:07:38 -04:00
readdir.c
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
select.c
timer: convert timer_slack_ns from unsigned long to u64
2016-03-17 15:09:34 -07:00
seq_file.c
fs, seqfile: always allow oom killer
2015-11-06 17:50:42 -08:00
signalfd.c
…
splice.c
Merge branches 'work.lookups', 'work.misc' and 'work.preadv2' into for-next
2016-03-18 16:07:38 -04:00
stack.c
…
stat.c
fs/stat.c: drop the last new_valid_dev check
2016-01-16 11:17:23 -08:00
statfs.c
…
super.c
writeback: flush inode cgroup wb switches instead of pinning super_block
2016-03-03 14:42:50 -07:00
sync.c
fs/sync.c: make sync_file_range(2) use WB_SYNC_NONE writeback
2015-11-06 17:50:42 -08:00
timerfd.c
timerfd: Handle relative timers with CONFIG_TIME_LOW_RES proper
2016-01-17 11:13:55 +01:00
userfaultfd.c
userfaultfd: don't block on the last VM updates at exit time
2016-03-02 09:03:18 -08:00
utimes.c
wrappers for ->i_mutex access
2016-01-22 18:04:28 -05:00
xattr.c
xattr handlers: plug a lock leak in simple_xattr_list
2016-02-20 00:15:51 -05:00