[PATCH] Add locking to iir(4)

John Baldwin jhb at freebsd.org
Thu Aug 14 19:56:25 UTC 2014

This patch fixes various issues in the iir(4) driver and adds locking to make 
it MPSAFE.  The patch is against HEAD though I expect it probably applies to 
9 and 10 as well.  Please test with INVARIANTS enabled.


John Baldwin

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