linux-kernel - Re: [RFC v2] mm: add page preemption

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Message-ID: <20191029152740.GB33522@cmpxchg.org>
Date:   Tue, 29 Oct 2019 11:27:40 -0400
From:   Johannes Weiner <hannes@...xchg.org>
To:     Michal Hocko <mhocko@...nel.org>
Cc:     Hillf Danton <hdanton@...a.com>, linux-mm <linux-mm@...ck.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Matthew Wilcox <willy@...radead.org>,
        Shakeel Butt <shakeelb@...gle.com>,
        Minchan Kim <minchan@...nel.org>, Mel Gorman <mgorman@...e.de>,
        Vladimir Davydov <vdavydov.dev@...il.com>,
        Jan Kara <jack@...e.cz>
Subject: Re: [RFC v2] mm: add page preemption

On Tue, Oct 29, 2019 at 09:41:53AM +0100, Michal Hocko wrote:
> As already raised in the review of v1. There is no real life usecase
> described in the changelog. I have also expressed concerns about how
> such a reclaim would work in the first place (priority inversion,
> expensive reclaim etc.). Until that is provided/clarified
> 
> Nacked-by: Michal Hocko <mhocko@...e.com>

I second this.

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