linux-kernel - Re: [PATCH 3/6] mm/zswap: stop lru list shrinking when encounter warm region

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Message-ID: <20240201175129.GC321148@cmpxchg.org>
Date: Thu, 1 Feb 2024 12:51:29 -0500
From: Johannes Weiner <hannes@...xchg.org>
To: Chengming Zhou <zhouchengming@...edance.com>
Cc: Nhat Pham <nphamcs@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Yosry Ahmed <yosryahmed@...gle.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: Re: [PATCH 3/6] mm/zswap: stop lru list shrinking when encounter
 warm region

On Thu, Feb 01, 2024 at 03:49:03PM +0000, Chengming Zhou wrote:
> When the shrinker encounter an existing folio in swap cache, it means
> we are shrinking into the warmer region. We should terminate shrinking
> if we're in the dynamic shrinker context.
> 
> This patch add LRU_STOP to support this, to avoid overshrinking.
> 
> Signed-off-by: Chengming Zhou <zhouchengming@...edance.com>

LGTM.

Acked-by: Johannes Weiner <hannes@...xchg.org>