From: Michal Hocko <mhocko@suse.com>
To: Shakeel Butt <shakeel.butt@linux.dev>
Cc: lsf-pc@lists.linux-foundation.org,
Andrew Morton <akpm@linux-foundation.org>,
Johannes Weiner <hannes@cmpxchg.org>,
David Hildenbrand <david@kernel.org>,
Qi Zheng <zhengqi.arch@bytedance.com>,
Lorenzo Stoakes <ljs@kernel.org>,
Chen Ridong <chenridong@huaweicloud.com>,
Emil Tsalapatis <emil@etsalapatis.com>,
Alexei Starovoitov <ast@kernel.org>,
Axel Rasmussen <axelrasmussen@google.com>,
Yuanchu Xie <yuanchu@google.com>, Wei Xu <weixugc@google.com>,
Kairui Song <ryncsn@gmail.com>,
Matthew Wilcox <willy@infradead.org>,
Nhat Pham <nphamcs@gmail.com>, Gregory Price <gourry@gourry.net>,
Barry Song <21cnbao@gmail.com>,
David Stevens <stevensd@google.com>,
Vernon Yang <vernon2gm@gmail.com>,
David Rientjes <rientjes@google.com>,
Kalesh Singh <kaleshsingh@google.com>,
wangzicheng <wangzicheng@honor.com>,
"T . J . Mercier" <tjmercier@google.com>,
Baolin Wang <baolin.wang@linux.alibaba.com>,
Suren Baghdasaryan <surenb@google.com>,
Meta kernel team <kernel-team@meta.com>,
bpf@vger.kernel.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [LSF/MM/BPF TOPIC] Towards Unified and Extensible Memory Reclaim (reclaim_ext)
Date: Thu, 26 Mar 2026 16:24:04 +0100 [thread overview]
Message-ID: <acVPlB1Y8IR-RKCg@tiehlicka> (raw)
In-Reply-To: <acUzMdxCDfbuyv9J@linux.dev>
On Thu 26-03-26 06:44:07, Shakeel Butt wrote:
> On Thu, Mar 26, 2026 at 08:12:10AM +0100, Michal Hocko wrote:
> > On Wed 25-03-26 14:06:37, Shakeel Butt wrote:
[...]
> > I think we should focus to make a single canonical reclaim
> > implementation work well. I.e. we deal with most (or ideally all) known
> > regressions of MGLRU.
>
> Here we disagree on the approach or steps to reach the single canonical reclaim
> implementation. MGLRU is a plethora of different mechanisms and policies and it
> never went through rigorous evaluation for each of those mechanisms and
> policies individually. To me that needs to be done to have one solution.
If my recollection is correct from the LSFMM (2022) there was a promise that
MGLRU architecture should allow to add extension and eventually
supersede traditional LRU. If we do not see that happening then we
should re-evaluate current MGRLU approach. I do not think we want to
build reclaim_ext architecture on top of the current code. Or are you
suggesting to achieve MGLRU through reclaim_ext?
--
Michal Hocko
SUSE Labs
next prev parent reply other threads:[~2026-03-26 15:24 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-25 21:06 [LSF/MM/BPF TOPIC] Towards Unified and Extensible Memory Reclaim (reclaim_ext) Shakeel Butt
2026-03-26 0:10 ` T.J. Mercier
2026-03-26 2:05 ` Andrew Morton
2026-03-26 7:03 ` Michal Hocko
2026-03-26 8:02 ` Lorenzo Stoakes (Oracle)
2026-03-26 12:37 ` Kairui Song
2026-03-26 13:13 ` Lorenzo Stoakes (Oracle)
2026-03-26 13:42 ` David Hildenbrand (Arm)
2026-03-26 13:45 ` Lorenzo Stoakes (Oracle)
2026-03-26 16:02 ` Lorenzo Stoakes (Oracle)
2026-03-26 20:02 ` Axel Rasmussen
2026-03-26 20:30 ` Gregory Price
2026-03-26 20:47 ` Axel Rasmussen
2026-03-27 3:43 ` Matthew Wilcox
2026-03-26 12:06 ` Kairui Song
2026-03-26 12:31 ` Lorenzo Stoakes (Oracle)
2026-03-26 13:17 ` Kairui Song
2026-03-26 13:26 ` Lorenzo Stoakes (Oracle)
2026-03-26 13:21 ` Shakeel Butt
2026-03-26 7:12 ` Michal Hocko
2026-03-26 13:44 ` Shakeel Butt
2026-03-26 15:24 ` Michal Hocko [this message]
2026-03-26 18:21 ` Shakeel Butt
2026-03-26 7:18 ` wangzicheng
2026-03-26 11:43 ` Lorenzo Stoakes (Oracle)
2026-03-26 15:24 ` Gregory Price
2026-03-26 15:35 ` Lorenzo Stoakes (Oracle)
2026-03-26 16:32 ` Gregory Price
2026-03-26 16:40 ` Lorenzo Stoakes (Oracle)
2026-03-26 18:49 ` Shakeel Butt
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