linux-kernel - Re: [PATCH] KVM: get rid of var page in kvm_set_pfn

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Date:   Thu, 5 Dec 2019 11:18:07 +0100
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     linmiaohe <linmiaohe@...wei.com>, rkrcmar@...hat.com
Cc:     kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] KVM: get rid of var page in kvm_set_pfn_dirty()

On 05/12/19 04:05, linmiaohe wrote:
> From: Miaohe Lin <linmiaohe@...wei.com>
> 
> We can get rid of unnecessary var page in
> kvm_set_pfn_dirty() , thus make code style
> similar with kvm_set_pfn_accessed().
> Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
> ---
>  virt/kvm/kvm_main.c | 7 ++-----
>  1 file changed, 2 insertions(+), 5 deletions(-)
> 
> diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
> index 00268290dcbd..3aa21bec028d 100644
> --- a/virt/kvm/kvm_main.c
> +++ b/virt/kvm/kvm_main.c
> @@ -1931,11 +1931,8 @@ EXPORT_SYMBOL_GPL(kvm_release_pfn_dirty);
>  
>  void kvm_set_pfn_dirty(kvm_pfn_t pfn)
>  {
> -	if (!kvm_is_reserved_pfn(pfn) && !kvm_is_zone_device_pfn(pfn)) {
> -		struct page *page = pfn_to_page(pfn);
> -
> -		SetPageDirty(page);
> -	}
> +	if (!kvm_is_reserved_pfn(pfn) && !kvm_is_zone_device_pfn(pfn))
> +		SetPageDirty(pfn_to_page(pfn));
>  }
>  EXPORT_SYMBOL_GPL(kvm_set_pfn_dirty);
>  
> 

Queued, thanks.

Paolo