DM_ACTIVE_PRESENT_FLAG
if (flags & DM_ACTIVE_PRESENT_FLAG)
DM_ADD_FLAG(flags, DM_ACTIVE_PRESENT_FLAG);
DM_REMOVE_FLAG(flags, DM_ACTIVE_PRESENT_FLAG);
atomic_or_32(&dmv->flags, DM_ACTIVE_PRESENT_FLAG);
DM_ADD_FLAG(flags, DM_ACTIVE_PRESENT_FLAG);
DM_REMOVE_FLAG(flags, DM_ACTIVE_PRESENT_FLAG);