* SIGQUIT - init will exec() shutdown. shutdown will detect that it is
* running as pid 1 and will just loop and reap child processes.
* This is used by shutdown so that init will not hang on to its
- * inode, allowing clean filesystem unmounting.
+ * inode, allowing the filesystem to be re-mounted readonly
+ * (this is only an issue if the init binary has been unlinked,
+ * since it's then holding an inode which can't be maintained
+ * when the filesystem is unmounted).
*
* Not sent by shutdown:
* SIGHUP - re-read inittab and spawn any new getty entries