This function ensures the argument is the mount point (i.e. if it's not, it bind mounts it to itself). Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com> (cherry picked from commit 8abadb36fa8149cd44e76b0e7fdedd6f1f2eccd0) Upstream-commit: 2199ada691dc635cac5cdd065d909a539dd0b793 Component: engine