Lines of bootfs.init from check-in 2f11a995dc that are changed by the sequence of edits moving toward check-in 8f80b79392:

                         1: # vim:ft=make:
                         2: 
2f11a995dc 2019-10-19    3: bootfs:
                         4: 	: Checking whether we need /boot mounted.
2f11a995dc 2019-10-19    5: 	mount -vadr | grep -q ' /boot$' && mount -r /boot || exit 0