[GIT PULL] overlayfs fixes for 4.16-rc5

[Miklos Szeredi]

Hi Linus,

Please pull from:

  git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs.git overlayfs-linus

This fixes a corner case for NFS exporting (introduced in this cycle) as well as
fixing miscellaneous bugs.

Thanks,
Miklos

---
Amir Goldstein (3):
      ovl: hash non-dir by lower inode for fsnotify
      ovl: check lower ancestry on encode of lower dir file handle
      ovl: check ERR_PTR() return value from ovl_lookup_real()

Fengguang Wu (1):
      ovl: fix ptr_ret.cocci warnings

Miklos Szeredi (1):
      ovl: update Kconfig texts

Vivek Goyal (1):
      ovl: redirect_dir=nofollow should not follow redirect for opaque lower

---
 fs/overlayfs/Kconfig     |  14 +++
 fs/overlayfs/export.c    | 216 ++++++++++++++++++++++++++++++++++++-----------
 fs/overlayfs/inode.c     |  58 +++++++++----
 fs/overlayfs/namei.c     |   6 +-
 fs/overlayfs/overlayfs.h |   1 +
 fs/overlayfs/super.c     |   1 +
 6 files changed, 228 insertions(+), 68 deletions(-)