A new implementation but not a new concept:

https://wiki.archlinux.org/index.php/swap_on_video_ram

http://ft23.pmenier.net/docext/mtd/TIP_Use_memory_on_video_c...

This may be the very first occurrence of the idea on Linux:

http://web.archive.org/web/20081227185259/http://hedera.linu...