- /* Mark the root directory as shared in regards to mount
- * propagation. The kernel defaults to "private", but we think
- * it makes more sense to have a default of "shared" so that
- * nspawn and the container tools work out of the box. If
- * specific setups need other settings they can reset the
- * propagation mode to private if needed. */
+ /* Mark the root directory as shared in regards to mount propagation. The kernel defaults to "private", but we
+ * think it makes more sense to have a default of "shared" so that nspawn and the container tools work out of
+ * the box. If specific setups need other settings they can reset the propagation mode to private if
+ * needed. Note that we set this only when we are invoked directly by the kernel. If we are invoked by a
+ * container manager we assume the container manager knows what it is doing (for example, because it set up
+ * some directories with different propagation modes). */