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Date:   Tue, 1 Feb 2022 02:42:38 +0000
From:   Wei Yang <richard.weiyang@gmail.com>
To:     Michal Hocko <mhocko@kernel.org>
Cc:     Andrew Morton <akpm@linux-foundation.org>, linux-mm@kvack.org,
        LKML <linux-kernel@vger.kernel.org>,
        David Hildenbrand <david@redhat.com>,
        Alexey Makhalov <amakhalov@vmware.com>,
        Dennis Zhou <dennis@kernel.org>,
        Eric Dumazet <eric.dumazet@gmail.com>,
        Oscar Salvador <osalvador@suse.de>, Tejun Heo <tj@kernel.org>,
        Christoph Lameter <cl@linux.com>,
        Nico Pache <npache@redhat.com>,
        Wei Yang <richard.weiyang@gmail.com>,
        Rafael Aquini <raquini@redhat.com>,
        Michal Hocko <mhocko@suse.com>
Subject: Re: [PATCH 4/6] mm, memory_hotplug: reorganize new pgdat
 initialization
Message-ID: <20220201024238.ihq477dgayy6oxeg@master>
Reply-To: Wei Yang <richard.weiyang@gmail.com>
References: <20220127085305.20890-1-mhocko@kernel.org>
 <20220127085305.20890-5-mhocko@kernel.org>
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On Thu, Jan 27, 2022 at 09:53:03AM +0100, Michal Hocko wrote:
>From: Michal Hocko <mhocko@suse.com>
>
>When a !node_online node is brought up it needs a hotplug specific
>initialization because the node could be either uninitialized yet or it
>could have been recycled after previous hotremove. hotadd_init_pgdat is
>responsible for that.
>
>Internal pgdat state is initialized at two places currently
>	- hotadd_init_pgdat
>	- free_area_init_core_hotplug
>There is no real clear cut what should go where but this patch's chosen to
>move the whole internal state initialization into free_area_init_core_hotplug.
>hotadd_init_pgdat is still responsible to pull all the parts together -
>most notably to initialize zonelists because those depend on the overall topology.
>
>This patch doesn't introduce any functional change.
>
>Acked-by: Rafael Aquini <raquini@redhat.com>
>Signed-off-by: Michal Hocko <mhocko@suse.com>

Reviewed-by: Wei Yang <richard.weiyang@gmail.com>
-- 
Wei Yang
Help you, Help me