[GIT PULL] overlayfs update for 4.5

[Miklos Szeredi]

Hi Linus,

Please pull from:

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

This contains several bug fixes and a new mount option "default_permissions"
that allows read-only exported NFS filesystems to be used as lower layer.

Thanks,
Miklos

---
Konstantin Khlebnikov (1):
      ovl: check dentry positiveness in ovl_cleanup_whiteouts()

Miklos Szeredi (4):
      ovl: default permissions
      ovl: allow zero size xattr
      ovl: root: copy attr
      ovl: setattr: check permissions before copy-up

Stephen Hemminger (1):
      ovl: move super block magic number to magic.h

Vito Caputo (1):
      ovl: use a minimal buffer in ovl_copy_xattr

---
 fs/overlayfs/copy_up.c     | 41 ++++++++++++++++++++++++++---------------
 fs/overlayfs/inode.c       | 36 ++++++++++++++++++++++++++++++++++++
 fs/overlayfs/overlayfs.h   |  3 +++
 fs/overlayfs/readdir.c     |  3 ++-
 fs/overlayfs/super.c       | 35 +++++++++++++++++++++++++++++++++--
 include/uapi/linux/magic.h |  1 +
 6 files changed, 101 insertions(+), 18 deletions(-)