f2fs and fscrypto bug fixes for 4.6-rc4

Hi Linus,

Could you please pull these patches which were missing in -rc3? In addition to f2fs/fscrypto fixes, I've added one patch which prevents RCU mode lookup in d_revalidate, as Al mentioned.

Thanks,

The following changes since commit bf16200689118d19de1b8d2a3c314fc21f5dc7bb:

Linux 4.6-rc3 (2016-04-10 17:58:30 -0700)

are available in the git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs.git tags/for-linus-4.6-rc4

for you to fetch changes up to 03a8bb0e53d9562276045bdfcf2b5de2e4cff5a1:

ext4/fscrypto: avoid RCU lookup in d_revalidate (2016-04-12 20:01:35 -0700)

----------------------------------------------------------------
for-linus-4.6-rc4

These patches fix f2fs and fscrypto based on -rc3 bug fixes in ext4 crypto, which have not yet been fully propagated as follows.
- use of dget_parent and file_dentry to avoid crashes
- disallow RCU-mode lookup in d_invalidate
- disallow -ENOMEM in the core data encryption path

----------------------------------------------------------------
Jaegeuk Kim (4):
fscrypto: use dget_parent() in fscrypt_d_revalidate()
f2fs: use dget_parent and file_dentry in f2fs_file_open
fscrypto: don't let data integrity writebacks fail with ENOMEM ext4/fscrypto: avoid RCU lookup in d_revalidate

 fs/crypto/crypto.c       | 51 ++++++++++++++++++++++++++++++------------------
 fs/ext4/crypto.c         |  4 ++++
 fs/f2fs/data.c           | 16 ++++++++++++---
 fs/f2fs/file.c           | 10 +++++++---
 include/linux/fscrypto.h |  9 +++++----
 5 files changed, 61 insertions(+), 29 deletions(-)