linux-kernel - Re:Re: [PATCH] mm: remove the redundancy code

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Message-ID: <alpine.DEB.2.22.394.2006291905000.1118534@chino.kir.corp.google.com>
Date:   Mon, 29 Jun 2020 19:06:55 -0700 (PDT)
From:   David Rientjes <rientjes@...gle.com>
To:     苏辉 <sh_def@....com>
cc:     Mike Rapoport <rppt@...nel.org>, akpm@...ux-foundation.org,
        linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re:Re: [PATCH] mm: remove the redundancy code

On Tue, 30 Jun 2020, 苏辉 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.