- mnt: Prevent pivot_root from creating a loop in the mount tree
  (CVE-2014-7970 bnc#900644).
- vfs: more mnt_parent cleanups (CVE-2014-7970 bnc#900644).
- vfs: new internal helper: mnt_has_parent(mnt) (CVE-2014-7970
  bnc#900644).
- Refresh
  patches.suse/dcache-add-dcache_lustre_invalid-flag-for-lustre-to-handle-its-own-invalidation.

suse-commit: ded5a46cebb6ba924f0696efe9d2fab83251db40