From: Johannes Weiner <hannes@cmpxchg.org>
To: Zicheng Wang <wangzicheng@honor.com>
Cc: akpm@linux-foundation.org, yuanchu@google.com, tj@kernel.org,
mkoutny@suse.com, corbet@lwn.net, kasong@tencent.com,
qi.zheng@linux.dev, shakeel.butt@linux.dev, baohua@kernel.org,
axelrasmussen@google.com, weixugc@google.com, david@kernel.org,
ljs@kernel.org, liam@infradead.org, vbabka@kernel.org,
rppt@kernel.org, surenb@google.com, mhocko@suse.com,
roman.gushchin@linux.dev, muchun.song@linux.dev,
cgroups@vger.kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org,
willy@infradead.org, denghaojie@honor.com, baoquan.he@linux.dev,
kaleshsingh@google.com, tjmercier@google.com,
tao.wangtao@honor.com, zhangji1@honor.com, wangzhen5@honor.com
Subject: Re: [RFC v2 0/3] mm/mglru: proactive aging via memory.aging
Date: Wed, 15 Jul 2026 16:00:46 +0200 [thread overview]
Message-ID: <20260715140046.GO276793@cmpxchg.org> (raw)
In-Reply-To: <20260714121529.2237261-1-wangzicheng@honor.com>
On Tue, Jul 14, 2026 at 08:15:26PM +0800, Zicheng Wang wrote:
> MGLRU inverts the reclaim order when anonymous memory is faulted in
> bulk: anonymous pages sit in the young generations while file pages
> sit in the oldest two, so reclaim evicts hot file pages before cold
> anonymous pages.
An aging inversion in the reclaim algorithm seems like an exceedingly
poor justification for a userspace interface to work around them.
next prev parent reply other threads:[~2026-07-15 14:00 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-14 12:15 [RFC v2 0/3] mm/mglru: proactive aging via memory.aging Zicheng Wang
2026-07-14 12:15 ` [RFC v2 1/3] mm/lru_gen: add AGING counter and proactive aging helper Zicheng Wang
2026-07-14 12:15 ` [RFC v2 2/3] mm: memcontrol: add memory.aging cgroup v2 file Zicheng Wang
2026-07-14 12:15 ` [RFC v2 3/3] mm/lru_gen: expose oldest-generation page counts in memory.stat Zicheng Wang
2026-07-15 14:00 ` Johannes Weiner [this message]
2026-07-15 17:55 ` [RFC v2 0/3] mm/mglru: proactive aging via memory.aging T.J. Mercier
2026-07-16 2:29 ` Ridong Chen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260715140046.GO276793@cmpxchg.org \
--to=hannes@cmpxchg.org \
--cc=akpm@linux-foundation.org \
--cc=axelrasmussen@google.com \
--cc=baohua@kernel.org \
--cc=baoquan.he@linux.dev \
--cc=cgroups@vger.kernel.org \
--cc=corbet@lwn.net \
--cc=david@kernel.org \
--cc=denghaojie@honor.com \
--cc=kaleshsingh@google.com \
--cc=kasong@tencent.com \
--cc=liam@infradead.org \
--cc=linux-doc@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=ljs@kernel.org \
--cc=mhocko@suse.com \
--cc=mkoutny@suse.com \
--cc=muchun.song@linux.dev \
--cc=qi.zheng@linux.dev \
--cc=roman.gushchin@linux.dev \
--cc=rppt@kernel.org \
--cc=shakeel.butt@linux.dev \
--cc=surenb@google.com \
--cc=tao.wangtao@honor.com \
--cc=tj@kernel.org \
--cc=tjmercier@google.com \
--cc=vbabka@kernel.org \
--cc=wangzhen5@honor.com \
--cc=wangzicheng@honor.com \
--cc=weixugc@google.com \
--cc=willy@infradead.org \
--cc=yuanchu@google.com \
--cc=zhangji1@honor.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox