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Date: Mon, 30 Mar 2026 22:15:00 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Hao Li <hao.li@linux.dev>
Cc: "Harry Yoo (Oracle)" <harry@kernel.org>, david@kernel.org,
 osalvador@suse.de, vbabka@suse.cz, joshua.hahnjy@gmail.com,
 linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-cxl@vger.kernel.org
Subject: Re: [PATCH v2] mm/memory_hotplug: maintain N_NORMAL_MEMORY during
 hotplug
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On Tue, 31 Mar 2026 12:24:46 +0800 Hao Li <hao.li@linux.dev> wrote:

> The most visible effect is that
> /sys/devices/system/node/has_normal_memory does not report a node even
> after that node has gained normal memory via hotplug.
> 
> Also, list_lru-based shrinkers can undercount objects on such a node and
> may skip reclaim on that node entirely, which can lead to a higher memory
> footprint than expected.
> 
> Feel free to fold the above into the changelog if useful :)

Very useful.  Added, thanks!