Re: [PATCH 3/6] KVM: x86/mmu: avoid struct page in MMU

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Excerpts from Marc Zyngier's message of June 24, 2021 8:06 pm:
> On Thu, 24 Jun 2021 09:58:00 +0100,
> Nicholas Piggin <npiggin@xxxxxxxxx> wrote:
>> 
>> Excerpts from David Stevens's message of June 24, 2021 1:57 pm:
>> > From: David Stevens <stevensd@xxxxxxxxxxxx>
>> >  out_unlock:
>> >  	if (is_tdp_mmu_root(vcpu->kvm, vcpu->arch.mmu->root_hpa))
>> >  		read_unlock(&vcpu->kvm->mmu_lock);
>> >  	else
>> >  		write_unlock(&vcpu->kvm->mmu_lock);
>> > -	kvm_release_pfn_clean(pfn);
>> > +	if (pfnpg.page)
>> > +		put_page(pfnpg.page);
>> >  	return r;
>> >  }
>> 
>> How about
>> 
>>   kvm_release_pfn_page_clean(pfnpg);
> 
> I'm not sure. I always found kvm_release_pfn_clean() ugly, because it
> doesn't mark the page 'clean'. I find put_page() more correct.
> 
> Something like 'kvm_put_pfn_page()' would make more sense, but I'm so
> bad at naming things that I could just as well call it 'bob()'.

That seems like a fine name to me. A little better than bob.

Thanks,
Nick
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