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From: SJ Park <sj@kernel.org>
To: Liew Rui Yan <aethernet65535@gmail.com>
Cc: SJ Park <sj@kernel.org>,
	Andrew Morton <akpm@linux-foundation.org>,
	damon@lists.linux.dev,
	linux-mm@kvack.org,
	linux-kernel@vger.kernel.org,
	stable@vger.kernel.org
Subject: Re: [PATCH v2.1] mm/damon/core: fix false positive in damos_quota_is_full() when esz is zero
Date: Wed,  2 Sep 2026 07:10:00 -0700
Message-ID: <20260902141001.86733-1-sj@kernel.org>
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On Wed,  2 Sep 2026 16:44:45 +0800 Liew Rui Yan <aethernet65535@gmail.com> wrote:

> When setting goal_tuner to 'temporal', if the goal is achieved,
> quota->esz_bp will be set to zero.  In this case, damos_quota_is_full()
> will always return true, even if no regions have been tried to apply at
> all.  This causes qt_exceeds to increase unexpectedly.

To me, this looks logically correct.  Could this cause any user issue?


Thanks,
SJ

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