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From: SJ Park <sj@kernel.org>
To: SJ Park <sj@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Liew Rui Yan <aethernet65535@gmail.com>,
	stable@vger.kernel.org,
	damon@lists.linux.dev,
	linux-kernel@vger.kernel.org,
	linux-mm@kvack.org
Subject: Re: [PATCH v4] mm/damon/core: allow esz to be set to zero
Date: Tue,  8 Sep 2026 07:50:35 -0700
Message-ID: <20260908145036.104970-1-sj@kernel.org>
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On Tue,  8 Sep 2026 06:54:11 -0700 SJ Park <sj@kernel.org> wrote:

> From: Liew Rui Yan <aethernet65535@gmail.com>
> 
> When the temporal quota goal tuner determines that the goal has been
> achieved (score >= 10000), it sets esz_bp to zero so that the esz
> becomes zero.  However, damos_set_effective_quota() clamps the esz to
> min_region_sz when quota->ms is set.
> 
> This is a minor issue, the main problem is that it doesn't match the
> description in the documentation, which state that if the goal has
> already been [over-]achieved, the quota will be set to zero.
> 
> Fix this by set quota (esz) as minimum as possible.

Sashiko found a few pre-existing issues but no blocker for this patch.


Thanks,
SJ

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