linux-kernel - Re: [PATCH] mm: skip current when memcg reclaim

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Message-ID: <YWpBf2VUr/w507ak@casper.infradead.org>
Date:   Sat, 16 Oct 2021 04:05:35 +0100
From:   Matthew Wilcox <willy@...radead.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Huangzhaoyang <huangzhaoyang@...il.com>,
        Johannes Weiner <hannes@...xchg.org>,
        Michal Hocko <mhocko@...nel.org>,
        Vladimir Davydov <vdavydov.dev@...il.com>,
        Zhaoyang Huang <zhaoyang.huang@...soc.com>, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm: skip current when memcg reclaim

On Fri, Oct 15, 2021 at 01:00:35PM -0700, Andrew Morton wrote:
> On Fri, 15 Oct 2021 14:15:29 +0800 Huangzhaoyang <huangzhaoyang@...il.com> wrote:
> 
> > From: Zhaoyang Huang <zhaoyang.huang@...soc.com>
> > 
> > Sibling thread of the same process could refault the reclaimed pages
> > in the same time, which would be typical in None global reclaim and
> > introduce thrashing.
> 
> "None" -> "node", I assume?

I think that's "non-global", ie memcg based.