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To prevent taskq_member holding tq_lock and doing linear search, thus causing contention. We store the taskq pointer to which the thread belongs in tsd. This way taskq_member will not need to touch tq_lock, and tsd has per slot spinlock. So the contention should be reduced greatly. Signed-off-by: Chunwei Chen <david.chen@osnexus.com> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #500 Closes #504 Closes #505 |
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