linux-kernel - Re: [PATCH] mm: vmscan: fix extreme overreclaim and swap floods

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Message-ID: <5fa3beeccef7ab959d266973ab1641f011fdf11f.camel@surriel.com>
Date:   Wed, 03 Aug 2022 13:27:17 -0400
From:   Rik van Riel <riel@...riel.com>
To:     Johannes Weiner <hannes@...xchg.org>,
        Andrew Morton <akpm@...ux-foundation.org>
Cc:     Mel Gorman <mgorman@...hsingularity.net>,
        Hugh Dickins <hughd@...gle.com>,
        Joonsoo Kim <iamjoonsoo.kim@....com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, kernel-team@...com
Subject: Re: [PATCH] mm: vmscan: fix extreme overreclaim and swap floods

On Tue, 2022-08-02 at 12:28 -0400, Johannes Weiner wrote:
> 
> Change the code such that only one SWAP_CLUSTER_MAX-sized nudge
> toward
> the larger LRU lists is made before bailing out on a met reclaim
> goal.
> 
> This fixes the extreme overreclaim problem.

Reviewed-by: Rik van Riel <riel@...riel.com>

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