The Millers booked their place in the Sky Bet Championship for a third year with a 0-0 draw at Wolves, stretching their unbeaten run to an impressive 11 games.
Safety may have been coming for the last fortnight - ever since that decisive victory at MK Dons - and they perhaps limped over the line with three successive draws, but that no way lessens the remarkable achievement of the last two months.
Staring relegation in the face after two defeats from Warnock's first three games at the helm, the Millers embarked on a superb run that turned the form table upside down and led them away from danger.
Warnock has said many times that keeping the Millers up would be his finest achievement in the game and now it's one that has become reality.
"It will take a while to realise what an achievement this is," Warnock said. "The players have been fantastic and the chairman has been unbelievable. It's wonderful for me to give them something to smile about.
"It's great to come to Wolves and get it put to bed. If you'd have told me that at the start when I came here, I'd have snapped your hands off.
"When you see them putting their bodies on the line to keep the goal intact, that's when I get very proud. I realise this is my level. I enjoy the football and I enjoy pleasing the fans. Our fans will be really happy.
"Now I want to finish as high as I can. I'd like to be undefeated until the end of the season. You look at the league table and there's no reason why we can't climb a couple more of places."
