Swap on ZFS

[David Noel]

Is swap on ZFS still ill-advised? All the forum, list, and blog posts
I find say it's a no-go. Is this still the case? The idea behind it
not working is that ZFS needs memory to write to disk, so when you
need to swap (are low on memory) ZFS won't be able to write.

I found some talk of having a tunable added as a workaround that would
reserve a certain amount of memory for ZFS so this wouldn't be a
problem, but have no idea if anyone's made any progress towards
implementing it.