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Date: Tue, 25 Aug 2020 12:39:10 +0100 From: Matthew Wilcox <willy@...radead.org> To: Alex Shi <alex.shi@...ux.alibaba.com> Cc: Daniel Jordan <daniel.m.jordan@...cle.com>, Hugh Dickins <hughd@...gle.com>, Andrew Morton <akpm@...ux-foundation.org>, mgorman@...hsingularity.net, tj@...nel.org, khlebnikov@...dex-team.ru, hannes@...xchg.org, lkp@...el.com, linux-mm@...ck.org, linux-kernel@...r.kernel.org, cgroups@...r.kernel.org, shakeelb@...gle.com, iamjoonsoo.kim@....com, richard.weiyang@...il.com, kirill@...temov.name, alexander.duyck@...il.com, rong.a.chen@...el.com, mhocko@...e.com, vdavydov.dev@...il.com, shy828301@...il.com Subject: Re: [PATCH v18 00/32] per memcg lru_lock On Tue, Aug 25, 2020 at 11:26:58AM +0800, Alex Shi wrote: > I tried reusing page->prviate to store lruvec pointer, that could remove some > regression on this, since private is generally unused on a lru page. But the patch > is too buggy now. page->private is for the use of the filesystem. You can grep for attach_page_private() to see how most filesystems use it. Some still use set_page_private() for various reasons.
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