linux-kernel - Re: [PATCH 07/12] KVM: X86/MMU: Remove the useless struct mmu_page

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Message-ID: <YtcQ1GuTAttXaUk+@google.com>
Date:   Tue, 19 Jul 2022 20:15:16 +0000
From:   Sean Christopherson <seanjc@...gle.com>
To:     Lai Jiangshan <jiangshanlai@...il.com>
Cc:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        Paolo Bonzini <pbonzini@...hat.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Maxim Levitsky <mlevitsk@...hat.com>,
        Lai Jiangshan <jiangshan.ljs@...group.com>
Subject: Re: [PATCH 07/12] KVM: X86/MMU: Remove the useless struct
 mmu_page_path

Nit, s/useless/now-unused, or "no longer used".  I associate "useless" in shortlogs
as "this <xyz> is pointless and always has been pointless", whereas "now-unused"
is likely to be interpreted as "remove <xyz> as it's no longer used after recent
changes".

Alternatively, can this patch be squashed with the patch that removes
mmu_pages_clear_parents()?  Yeah, it'll be a (much?) larger patch, but leaving
dead code behind is arguably worse.

On Sun, Jun 05, 2022, Lai Jiangshan wrote:
> From: Lai Jiangshan <jiangshan.ljs@...group.com>
> 
> struct mmu_page_path is set and updated but never used since
> mmu_pages_clear_parents() is removed.
> 
> Remove it.
> 
> Signed-off-by: Lai Jiangshan <jiangshan.ljs@...group.com>
> ---