mount applet behaving differently than util-linux on single-argument remount.

[Norbert Lange]

I am trying to use busybox mount instead of util-linux.

systemd will remount the rootfs early, this is done to change it from
ro to rw after running fsck,
the executed command is:

# mount / -o remount

And the corresponding fstab:
# cat /etc/fstab
/dev/root / auto rw 0 1

It seems that busybox' mount is completely ignoring /etc/fstab in that case.

Norbert