enabling != configuring. Are you saying this is all that's necessary, assuming an existing swap device exists? That should be made clearer.

Edit: To be extra clear. When I was researching this, I ended up going with zram only because:

* It is the default for Fedora.

* zramctl gives me live statistics of used and compressed size.

* The zswap doc didn't help my confusion on how backing devices work (I guess they're any swapon'd device?)