linux-kernel - Re: [RFC PATCH v2 2/4] mm/__free_one_page: skip merge for order-0 page unless compaction failed

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Message-ID: <20180322185046.GK28468@bombadil.infradead.org>
Date:   Thu, 22 Mar 2018 11:50:46 -0700
From:   Matthew Wilcox <willy@...radead.org>
To:     Daniel Jordan <daniel.m.jordan@...cle.com>
Cc:     Aaron Lu <aaron.lu@...el.com>, Vlastimil Babka <vbabka@...e.cz>,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Huang Ying <ying.huang@...el.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Kemi Wang <kemi.wang@...el.com>,
        Tim Chen <tim.c.chen@...ux.intel.com>,
        Andi Kleen <ak@...ux.intel.com>,
        Michal Hocko <mhocko@...e.com>,
        Mel Gorman <mgorman@...hsingularity.net>
Subject: Re: [RFC PATCH v2 2/4] mm/__free_one_page: skip merge for order-0
 page unless compaction failed

On Thu, Mar 22, 2018 at 02:39:17PM -0400, Daniel Jordan wrote:
> Shouldn't the anon column also contain lru?

Probably; I didn't finish investigating everything.  There should probably
also be another column for swap pages.  Maybe some other users use a
significant amount of the struct page ... ?