linux-kernel - Re: [PATCH v4 4/8] mm/swapcache: support to handle the exceptional entries in swapcache

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Message-ID: <20200323165001.GB204561@cmpxchg.org>
Date:   Mon, 23 Mar 2020 12:50:01 -0400
From:   Johannes Weiner <hannes@...xchg.org>
To:     js1304@...il.com
Cc:     Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, Michal Hocko <mhocko@...nel.org>,
        Hugh Dickins <hughd@...gle.com>,
        Minchan Kim <minchan@...nel.org>,
        Vlastimil Babka <vbabka@...e.cz>,
        Mel Gorman <mgorman@...hsingularity.net>, kernel-team@....com,
        Joonsoo Kim <iamjoonsoo.kim@....com>
Subject: Re: [PATCH v4 4/8] mm/swapcache: support to handle the exceptional
 entries in swapcache

On Mon, Mar 23, 2020 at 02:52:08PM +0900, js1304@...il.com wrote:
> From: Joonsoo Kim <iamjoonsoo.kim@....com>
> 
> Swapcache doesn't handle the exceptional entries since there is no case
> using it. In the following patch, workingset detection for anonymous
> page will be implemented and it stores the shadow entries as exceptional
> entries into the swapcache. So, we need to handle the exceptional entries
> and this patch implements it.
> 
> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@....com>

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