Obiviously SWAP partition can not be considered by the system as an extenction because it's only a separate partition in wich the system can store part of ram files IF the ram begin to get full. The ram it's a chip built on the board itself and SWAP partition is just a partition created into your sd card and also it's only a matter of software and not hardware. If you need more information google about "linix swap partition". If all the rom you installed booted fine that means that they were working completly fine.
P.S. That kernel patcher uses the internal memory of the phone as a swap partition so you don't need to create one on your sd card. Also swap destroy sd card.
P.P.S. WRONG SECTION!!!