Re: [PATCH tip/core/rcu 03/15] rcu: Properly initialize->boost_tasks on CPU offline

[Peter Zijlstra]

On Thu, 2012-08-30 at 11:56 -0700, Paul E. McKenney wrote:
> When rcu_preempt_offline_tasks() clears tasks from a leaf rcu_node
> structure, it does not NULL out the structure's ->boost_tasks field.
> This commit therefore fixes this issue. 

What would have been the side-effects of this? Would rcu-boosting have
been able to go funny on hotplug, and if so, how?

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