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Date: Thu, 22 Mar 2018 11:50:46 -0700
From: Matthew Wilcox <willy@infradead.org>
Subject: Re: [RFC PATCH v2 2/4] mm/__free_one_page: skip merge for order-0
 page unless compaction failed
Message-ID: <20180322185046.GK28468@bombadil.infradead.org>
References: <20180320085452.24641-1-aaron.lu@intel.com>
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To: Daniel Jordan <daniel.m.jordan@oracle.com>
Cc: Aaron Lu <aaron.lu@intel.com>, Vlastimil Babka <vbabka@suse.cz>, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrew Morton <akpm@linux-foundation.org>, Huang Ying <ying.huang@intel.com>, Dave Hansen <dave.hansen@linux.intel.com>, Kemi Wang <kemi.wang@intel.com>, Tim Chen <tim.c.chen@linux.intel.com>, Andi Kleen <ak@linux.intel.com>, Michal Hocko <mhocko@suse.com>, Mel Gorman <mgorman@techsingularity.net>

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 ... ?