I don't have swap. I don't WANT swap because its implementation is a pile of excrement.
In case of problems it reliably slows my computer to a crawl so it's often easier just to reboot the computer than to wait several minutes to type htop and kill the offending process. I very much prefer OOM killer to come out quickly and kill something - that usually leaves me with a working system, at least.
Again, using swap to extend the size of a _filesystem_ seems a bit convoluted.