Ian Kent 936ad90944 cifs - check S_AUTOMOUNT in revalidate ...

When revalidating a dentry, if the inode wasn't known to be a dfs
entry when the dentry was instantiated, such as when created via
->readdir(), the DCACHE_NEED_AUTOMOUNT flag needs to be set on the
dentry in ->d_revalidate().

The false return from cifs_d_revalidate(), due to the inode now
being marked with the S_AUTOMOUNT flag, might not invalidate the
dentry if there is a concurrent unlazy path walk. This is because
the dentry reference count will be at least 2 in this case causing
d_invalidate() to return EBUSY. So the asumption that the dentry
will be discarded then correctly instantiated via ->lookup() might
not hold.

Signed-off-by: Ian Kent <raven@themaw.net>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Cc: Steve French <smfrench@gmail.com>
Cc: linux-cifs@vger.kernel.org
Signed-off-by: Steve French <sfrench@us.ibm.com>

2012-05-03 13:49:47 -05:00

..

9p

9p changes for the 3.4 merge window

2012-03-28 09:58:38 -07:00

adfs

switch open-coded instances of d_make_root() to new helper

2012-03-20 21:29:35 -04:00

affs

switch open-coded instances of d_make_root() to new helper

2012-03-20 21:29:35 -04:00

afs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2012-03-21 13:36:41 -07:00

autofs4

autofs: make the autofsv5 packet file descriptor use a packetized pipe

2012-04-29 13:30:08 -07:00

befs

switch open-coded instances of d_make_root() to new helper

2012-03-20 21:29:35 -04:00

bfs

switch open-coded instances of d_make_root() to new helper

2012-03-20 21:29:35 -04:00

btrfs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs

2012-04-28 09:30:07 -07:00

cachefiles

switch touch_atime to struct path

2012-03-20 21:29:41 -04:00

ceph

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client

2012-03-28 10:01:29 -07:00

cifs

cifs - check S_AUTOMOUNT in revalidate

2012-05-03 13:49:47 -05:00

coda

Remove all #inclusions of asm/system.h

2012-03-28 18:30:03 +01:00

configfs

make configfs_pin_fs() return root dentry on success

2012-03-20 21:29:48 -04:00

cramfs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2012-03-21 13:36:41 -07:00

debugfs

simple_open: automatically convert to simple_open()

2012-04-05 15:25:50 -07:00

devpts

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2012-03-21 13:36:41 -07:00

dlm

dlm fixes for 3.4

2012-04-23 18:22:42 -07:00

ecryptfs

ecryptfs: make register_filesystem() the last potential failure exit

2012-03-20 21:29:49 -04:00

efs

switch open-coded instances of d_make_root() to new helper

2012-03-20 21:29:35 -04:00

exofs

Merge branch 'for-linus' of git://git.open-osd.org/linux-open-osd

2012-03-28 20:04:27 -07:00

exportfs

vfs: Add open by file handle support

2011-03-15 02:21:44 -04:00

ext2

migrate ext2_fs.h guts to fs/ext2/ext2.h

2012-03-31 16:03:16 -04:00

ext3

ext3: move headers to fs/ext3/

2012-03-31 16:03:16 -04:00

ext4

Ext4 bug fixes for 3.4

2012-04-23 19:52:00 -07:00

fat

fat: fix bug in enforcing Long File Name length

2012-03-23 16:58:40 -07:00

freevxfs

switch open-coded instances of d_make_root() to new helper

2012-03-20 21:29:35 -04:00

fscache

FS-Cache: Fix __fscache_uncache_all_inode_pages()'s outer loop

2011-07-21 10:59:16 -07:00

fuse

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse

2012-04-18 17:29:05 -07:00

gfs2

GFS2: Instruct DLM to avoid queue convert slowdown

2012-04-24 13:26:50 +01:00

hfs

switch open-coded instances of d_make_root() to new helper

2012-03-20 21:29:35 -04:00

hfsplus

hfsplus: add an ioctl to bless files

2012-03-20 21:29:53 -04:00

hostfs

Merge branch 'for-linus-3.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml

2012-03-27 18:29:53 -07:00

hpfs

switch open-coded instances of d_make_root() to new helper

2012-03-20 21:29:35 -04:00

hppfs

switch open-coded instances of d_make_root() to new helper

2012-03-20 21:29:35 -04:00

hugetlbfs

hugetlbfs: lockdep annotate root inode properly

2012-04-25 21:26:34 -07:00

isofs

switch open-coded instances of d_make_root() to new helper

2012-03-20 21:29:35 -04:00

jbd

Power management updates for 3.4

2012-03-21 10:15:51 -07:00

jbd2

jbd2: use GFP_NOFS for blkdev_issue_flush

2012-04-23 21:43:41 -04:00

jffs2

MTD merge for 3.4

2012-03-30 17:31:56 -07:00

jfs

jfs: mising cleanup on register_filesystem() failure

2012-03-20 21:29:48 -04:00

lockd

lockd: fix the endianness bug

2012-04-13 13:50:52 -04:00

logfs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2012-03-21 13:36:41 -07:00

minix

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2012-03-21 13:36:41 -07:00

ncpfs

Remove all #inclusions of asm/system.h

2012-03-28 18:30:03 +01:00

nfs

NFSv4: Keep dropped state owners on the LRU list for a while

2012-04-21 13:01:00 -04:00

nfs_common

Fix common misspellings

2011-03-31 11:26:23 -03:00

nfsd

nfsd: fix nfs4recover.c printk format warning

2012-04-30 12:28:48 -07:00

nilfs2

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2012-03-21 13:36:41 -07:00

nls

NLS: raname "maxlen" to "maxout" in UTF conversion routines

2011-11-26 19:58:47 -08:00

notify

fs/notify/notification.c: make subsys_initcall function static

2012-03-23 16:58:31 -07:00

ntfs

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2012-03-21 13:36:41 -07:00

ocfs2

ocfs2: ->e_leaf_clusters endianness breakage

2012-04-13 12:31:43 -04:00

omfs

switch open-coded instances of d_make_root() to new helper

2012-03-20 21:29:35 -04:00

openpromfs

switch open-coded instances of d_make_root() to new helper

2012-03-20 21:29:35 -04:00

proc

revert "proc: clear_refs: do not clear reserved pages"

2012-04-25 21:26:34 -07:00

pstore

Merge branch 'akpm' (Andrew's patch-bomb)

2012-04-05 15:30:34 -07:00

qnx4

qnx4: new helper - try_extent()

2012-03-20 21:29:52 -04:00

qnx6

fs: initial qnx6fs addition

2012-03-20 21:29:38 -04:00

quota

Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

2012-03-28 10:00:14 -07:00

ramfs

tidy up after d_make_root() conversion

2012-03-20 21:29:37 -04:00

reiserfs

Disintegrate and delete asm/system.h

2012-03-28 15:58:21 -07:00

romfs

MTD merge for 3.4

2012-03-30 17:31:56 -07:00

squashfs

Add an extra mount time sanity check, plus some code cleanups and bug fixes.

2012-03-28 18:05:54 -07:00

sysfs

sysfs: handle 'parent deleted before child added'

2012-04-10 14:48:51 -07:00

sysv

switch open-coded instances of d_make_root() to new helper

2012-03-20 21:29:35 -04:00

ubifs

- Improve error messages

2012-03-23 09:27:40 -07:00

udf

Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

2012-03-28 10:00:14 -07:00

ufs

Remove all #inclusions of asm/system.h

2012-03-28 18:30:03 +01:00

xfs

Disintegrate and delete asm/system.h

2012-03-28 15:58:21 -07:00

aio.c

kill mm argument of vm_munmap()

2012-04-21 01:58:20 -04:00

anon_inodes.c

anon_inodes: move allocation of anon_inode into ->mount()

2012-03-20 21:29:45 -04:00

attr.c

fs: reduce the use of module.h wherever possible

2012-02-28 19:31:58 -05:00

bad_inode.c

fs: reduce the use of module.h wherever possible

2012-02-28 19:31:58 -05:00

binfmt_aout.c

VM: add "vm_mmap()" helper function

2012-04-20 17:29:13 -07:00

binfmt_elf_fdpic.c

VM: add "vm_mmap()" helper function

2012-04-20 17:29:13 -07:00

binfmt_elf.c

VM: add "vm_mmap()" helper function

2012-04-20 17:29:13 -07:00

binfmt_em86.c

__register_binfmt() made void

2012-03-20 21:29:46 -04:00

binfmt_flat.c

VM: add "vm_mmap()" helper function

2012-04-20 17:29:13 -07:00

binfmt_misc.c

magic.h: move some FS magic numbers into magic.h

2012-03-23 16:58:31 -07:00

binfmt_script.c

__register_binfmt() made void

2012-03-20 21:29:46 -04:00

binfmt_som.c

VM: add "vm_mmap()" helper function

2012-04-20 17:29:13 -07:00

bio-integrity.c

fs: remove the second argument of k[un]map_atomic()

2012-03-20 21:48:21 +08:00

bio.c

fs: reduce the use of module.h wherever possible

2012-02-28 19:31:58 -05:00

block_dev.c

magic.h: move some FS magic numbers into magic.h

2012-03-23 16:58:31 -07:00

buffer.c

fs/buffer.c: remove BUG() in possible but rare condition

2012-04-25 21:26:33 -07:00

char_dev.c

char_dev.c: fix up some whitespace errors

2011-12-13 11:18:17 -08:00

compat_binfmt_elf.c

…

compat_ioctl.c

The following text was taken from the original review request:

2012-03-24 10:24:31 -07:00

compat.c

Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2012-03-29 18:12:23 -07:00

dcache.c

vfs: fix d_ancestor() case in d_materialize_unique

2012-03-28 09:54:34 -07:00

dcookies.c

fs: reduce the use of module.h wherever possible

2012-02-28 19:31:58 -05:00

direct-io.c

Restore direct_io / truncate locking API

2012-02-23 15:56:21 -08:00

drop_caches.c

vmscan: change shrinker API by passing shrink_control struct

2011-05-25 08:39:26 -07:00

eventfd.c

fs: reduce the use of module.h wherever possible

2012-02-28 19:31:58 -05:00

eventpoll.c

epoll: clear the tfile_check_list on -ELOOP

2012-04-25 21:26:33 -07:00

exec.c

Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2012-04-04 10:04:42 -07:00

fcntl.c

Wrap accesses to the fd_sets in struct fdtable

2012-02-19 10:30:52 -08:00

fhandle.c

vfs: prefer ->dentry->d_sb to ->mnt->mnt_sb

2012-01-06 23:16:53 -05:00

fifo.c

Filesystem: fifo: Fixed coding style issue.

2011-03-21 00:16:09 -04:00

file_table.c

vfs: drop_file_write_access() made static

2012-03-20 21:29:32 -04:00

file.c

Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2012-03-29 18:12:23 -07:00

filesystems.c

vfs: convert fs_supers to hlist

2012-01-03 22:52:39 -05:00

fs_struct.c

The following text was taken from the original review request:

2012-03-24 10:24:31 -07:00

fs-writeback.c

trivial writeback fixes

2012-03-28 10:07:27 -07:00

generic_acl.c

switch posix_acl_equiv_mode() to umode_t *

2011-08-01 02:10:06 -04:00

inode.c

trim includes in inode.c

2012-03-20 21:29:51 -04:00

internal.h

vfs: protect remounting superblock read-only

2012-01-06 23:20:12 -05:00

ioctl.c

fs: reduce the use of module.h wherever possible

2012-02-28 19:31:58 -05:00

ioprio.c

block: strip out locking optimization in put_io_context()

2012-02-07 07:51:30 +01:00

Kconfig

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2012-03-21 13:36:41 -07:00

Kconfig.binfmt

fs: binfmt_elf: create Kconfig variable for PIE randomization

2012-01-10 16:30:51 -08:00

libfs.c

dentry leak in simple_fill_super() failure exit

2012-04-09 01:39:22 -04:00

locks.c

CIFS: Fix VFS lock usage for oplocked files

2012-04-01 13:54:27 -05:00

Makefile

fs: initial qnx6fs addition

2012-03-20 21:29:38 -04:00

mbcache.c

vmscan: change shrinker API by passing shrink_control struct

2011-05-25 08:39:26 -07:00

mount.h

vfs: keep list of mounts for each superblock

2012-01-06 23:20:12 -05:00

mpage.c

fs: reduce the use of module.h wherever possible

2012-02-28 19:31:58 -05:00

namei.c

Make the "word-at-a-time" helper functions more commonly usable

2012-04-06 13:54:56 -07:00

namespace.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2012-01-08 13:21:22 -08:00

no-block.c

…

open.c

Wrap accesses to the fd_sets in struct fdtable

2012-02-19 10:30:52 -08:00

pipe.c

pipes: add a "packetized pipe" mode for writing

2012-04-29 13:12:42 -07:00

pnode.c

vfs: switch pnode.h macros to struct mount *

2012-01-03 22:57:11 -05:00

pnode.h

vfs: switch pnode.h macros to struct mount *

2012-01-03 22:57:11 -05:00

posix_acl.c

fs: reduce the use of module.h wherever possible

2012-02-28 19:31:58 -05:00

proc_namespace.c

vfs: switch ->show_options() to struct dentry *

2012-01-06 23:19:54 -05:00

read_write.c

fs: reduce the use of module.h wherever possible

2012-02-28 19:31:58 -05:00

read_write.h

…

readdir.c

fs: reduce the use of module.h wherever possible

2012-02-28 19:31:58 -05:00

select.c

Merge branch 'x86-x32-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2012-03-29 18:12:23 -07:00

seq_file.c

The following text was taken from the original review request:

2012-03-24 10:24:31 -07:00

signalfd.c

epoll: ep_unregister_pollwait() can use the freed pwq->whead

2012-02-24 11:42:50 -08:00

splice.c

tcp: tcp_sendpages() should call tcp_push() once

2012-04-05 19:04:27 -04:00

stack.c

fs: reduce the use of module.h wherever possible

2012-02-28 19:31:58 -05:00

stat.c

The following text was taken from the original review request:

2012-03-24 10:24:31 -07:00

statfs.c

fs: reduce the use of module.h wherever possible

2012-02-28 19:31:58 -05:00

super.c

The following text was taken from the original review request:

2012-03-24 10:24:31 -07:00

sync.c

fs: reduce the use of module.h wherever possible

2012-02-28 19:31:58 -05:00

timerfd.c

timerfd: Fix wakeup of processes when timer is cancelled on clock change

2011-06-14 11:46:14 +02:00

utimes.c

userns: rename is_owner_or_cap to inode_owner_or_capable

2011-03-23 19:47:13 -07:00

xattr_acl.c

fs: reduce the use of module.h wherever possible

2012-02-28 19:31:58 -05:00

xattr.c

fs/xattr.c:setxattr(): improve handling of allocation failures

2012-04-05 15:25:50 -07:00