[patch] zfs livelock and thread priorities

[Peter Schuller]

> Argh!  The patch was still broken even after this fix.

FWIW I just checked and one of my machines which was using both
zfs_thread_priority.diff and zfs_zinactive_deadlock.diff has survived
a night of package building without ZIL disabled. This would very
rarely, if at all, happen with ZIL enabled traditionally. On 8-CURRENT
I only tried it onces with ZIL enabled and it did hang, and now it
didn't.

I guess I'm not triggering the other deadlock that you indicate is
still present.

I'll hold off more testing for a bit since it sounds from other posts
like there are yet new patches in the pipeline.

-- 
/ Peter Schuller

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