illumos gate

Those certainly look like they could help with things like bhyve.. if no one else gets to them, I'll try to take a look soon..

In a bigger sense, now that support for FreeBSD has been added to the central OpenZFS repository, we should look at reporting it back to illumos so that we can be officially supported there as well.

I am all in for that!

The last commit doesn't appear to be useful for illumos -- on illumos taskq_member() just checks a field of the current kthread_t, so it's already pretty lightweight -- the fix appears to be specific to the port of the taskq framework to ZoL.

The first one appears useful (and a pretty simple change).. I've filed #12586 for that..

The second commit on the list seems specific to how Linux queues I/Os and doesn't seem relevant to illumos.