Mark disk as dirty when starting a write to it. Restores issuing of SYNCHRONIZE_CACHE commands on device close.
Mark disk as dirty when starting a write to it. Restores issuing of
SYNCHRONIZE_CACHE commands on device close.

ok dlg@ marco@

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars