Re: [PATCH]: Clean up of __alloc_pages

[Paul Jackson]

Ok ... so a spinlock (task_lock) costs one barrier and one atomic more
than an rcu_read_lock (on a preempt kernel where both spinlock and
rcu_read_lock cost a preempt), or something like that.

Thanks, Nick.

-- 
                  I won't rest till it's the best ...
                  Programmer, Linux Scalability
                  Paul Jackson <pj@xxxxxxx> 1.925.600.0401
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