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Date: Wed, 6 Dec 2023 16:22:15 +0100
From: Michal Hocko <mhocko@suse.com>
To: Ravi Jonnalagadda <ravis.opensrc@micron.com>
Cc: Jonathan.Cameron@huawei.com, aneesh.kumar@linux.ibm.com,
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	linux-mm@kvack.org, sthanneeru.opensrc@micron.com, tj@kernel.org,
	vtavarespetr@micron.com, ying.huang@intel.com
Subject: Re: [RFC PATCH 0/2] Node migration between memory tiers
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On Tue 05-12-23 14:49:58, Ravi Jonnalagadda wrote:
[...]
> There was a prior discussion on this functionality in a previous thread, where
> Huang Ying thought this might be a useful feature to overcome limitations of
> systems where nodes with different bandwidth characteristics are grouped in 
> a single tier.

Please summarize all those prior discussions into the cover letter.
Usecases are really crucial for the justification.
>
-- 
Michal Hocko
SUSE Labs