linux-kernel - Re: [PATCH] mm: mark folio as workingset in lru_deactivate

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Date:   Thu, 30 Mar 2023 09:38:48 +0800
From:   Zhaoyang Huang <huangzhaoyang@...il.com>
To:     Johannes Weiner <hannes@...xchg.org>
Cc:     "zhaoyang.huang" <zhaoyang.huang@...soc.com>,
        Andrew Morton <akpm@...ux-foundation.org>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, ke.wang@...soc.com
Subject: Re: [PATCH] mm: mark folio as workingset in lru_deactivate_fn

On Wed, Mar 29, 2023 at 10:55 PM Johannes Weiner <hannes@...xchg.org> wrote:
>
> On Wed, Mar 29, 2023 at 06:47:35PM +0800, zhaoyang.huang wrote:
> > From: Zhaoyang Huang <zhaoyang.huang@...soc.com>
> >
> > folio will skip of being set as workingset in lru_deactivate_fn.
>
> Can you please elaborate why that's undesirable? What's the problem
> you're fixing?
If I am correct, folio will skip being set as workingset when moving
from active lru to inactive lru, which is performed on every folio in
shrink_active_list during normal reclaim.