Merge tag 'ovl-fixes-4.20-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/mszer...

Merge tag 'ovl-fixes-4.20-rc7' of git://git./linux/kernel/git/mszeredi/vfs

Pull overlayfs fixes from Miklos Szeredi:
 "Needed to revert a patch, because it possibly introduces a security
  hole. Since the patch is basically a conceptual cleanup, not a bug
  fix, it's safe to revert. I'm not giving up on this, and discussions
  seemed to have reached an agreement over how to move forward, but that
  can wait 'till the next release.

  The other two patches are fixes for bugs introduced in recent
  releases"

* tag 'ovl-fixes-4.20-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
  Revert "ovl: relax permission checking on underlying layers"
  ovl: fix decode of dir file handle with multi lower layers
  ovl: fix missing override creds in link of a metacopy upper