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From: SeongJae Park <sj@kernel.org>
To: Gutierrez Asier <gutierrez.asier@huawei-partners.com>
Cc: SeongJae Park <sj@kernel.org>,
	artem.kuzin@huawei.com,
	stepanov.anatoly@huawei.com,
	wangkefeng.wang@huawei.com,
	yanquanmin1@huawei.com,
	zuoze1@huawei.com,
	damon@lists.linux.dev,
	akpm@linux-foundation.org,
	linux-mm@kvack.org,
	linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH v2 2/4] mm/damon: Support for synchrounous huge pages collapse
Date: Wed, 11 Mar 2026 07:17:53 -0700
Message-ID: <20260311141753.96543-1-sj@kernel.org>
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On Wed, 11 Mar 2026 16:11:12 +0300 Gutierrez Asier <gutierrez.asier@huawei-partners.com> wrote:

> 
> 
> On 3/11/2026 4:02 AM, SeongJae Park wrote:
> > On Tue, 10 Mar 2026 16:24:18 +0000 <gutierrez.asier@huawei-partners.com> wrote:
> > 
> >> From: Asier Gutierrez <gutierrez.asier@huawei-partners.com>
> > 
> > Please add more descriptions of the change, including the motivation.
> > 
> > I assume the motivation is similar to MADV_COLLAPSE that aims to make
> > synchronous and therefore faster huge page collapsing impacts copared to
> > MADV_HUGEPAGE?  It would be nice to make it clear here.  Also, if my assumption
> > is not wrong, adding a test results showing the benefit of DAMOS_COLLAPSE over
> > DAMOS_HUGEPAGE here would be nice.
> 
> You are right. I will make it more clear in the cover letter for the next
> version.

Sounds good.  But please add a brief commit message in addition to the subject
here, too.  Some people complains blank commit message looks odd.


Thanks,
SJ

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