Messages in this thread | | | Date | Thu, 24 Sep 2020 13:19:07 +0200 | From | Peter Zijlstra <> | Subject | Re: [RFC-PATCH 2/4] mm: Add __rcu_alloc_page_lockless() func. |
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On Thu, Sep 24, 2020 at 10:16:14AM +0200, Uladzislau Rezki wrote: > The key point is "enough". We need pages to make a) fast progress b) support > single argument of kvfree_rcu(one_arg). Not vice versa. That "enough" depends > on scheduler latency and vague pre-allocated number of pages, it might > be not enough what would require to refill it more and more or we can overshoot > that would lead to memory overhead. So we have here timing issues and > not accurate model. IMHO.
I'm firmly opposed to the single argument kvfree_rcu() idea, that's requiring memory to free memory.
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