Origin for each line in bootfs.init from check-in 2f11a995dc:

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