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Date:   Mon, 29 Jun 2020 19:06:55 -0700 (PDT)
From:   David Rientjes <rientjes@google.com>
To:     =?UTF-8?B?6IuP6L6J?= <sh_def@163.com>
cc:     Mike Rapoport <rppt@kernel.org>, akpm@linux-foundation.org,
        linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re:Re: [PATCH] mm: remove the redundancy code
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On Tue, 30 Jun 2020, ?ջ? wrote:

> I am sorry that i did not consider the memory hotplug case,
> and i think we should add a new param to distinguish two different cases.
> 

No need, we can simply continue setting zone->zone_start_pfn unless there 
is a bug to be fixed (and, if so, please send a bug report).  Removing it 
would not improve anything and would only increase risk.
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