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Tue, 18 Aug 2026 08:57:14 -0700 (PDT) From: Joshua Hahn To: Michal Hocko Cc: liuqiqi@kylinos.cn, linux-mm@kvack.org, tj@kernel.org, mkoutny@suse.com, hannes@cmpxchg.org, roman.gushchin@linux.dev, shakeel.butt@linux.dev, muchun.song@linux.dev, akpm@linux-foundation.org, cgroups@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [RFC PATCH 0/8] mm/memcontrol: introduce per-tier memory accounting and control Date: Tue, 18 Aug 2026 08:57:12 -0700 Message-ID: <20260818155712.882286-1-joshua.hahnjy@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit On Tue, 18 Aug 2026 10:12:19 +0200 Michal Hocko wrote: > Are you aware of a similar work in this area by Joshua > https://lore.kernel.org/all/20260807202059.2620949-1-joshua.hahnjy@gmail.com/T/#u? > We owe Joshua review feedback for quite some time but if I have to be > honest the most impeding factor on my end is that I am not really > convinced tier aware controlling is the right direction. I have > expressed some concerns on one of the earlier proposal by Joshua > https://lore.kernel.org/all/aZ2LC0KPF0xsAwAL@tiehlicka/T/#u > > In any way it would be great to talk and compare your approaches see > where they align and the discuss further. Hi Michal, I hope you have been doing well! Maybe this is a good opportunity to squash concerns about the series : -) I've sent a new version which addresses a lot of the concerns that David Hildenbrand had previously brought up [1]. This implementation is as transparent as can be to the user. I hope that this makes sense to you! IIRC you had some concerns about getting the interface right the first time we introduce this feature. Hopefully with no user-visible features (and only a mount option) your concerns there are resolved and hopefully we can work to figure out what remaining concerns there are. Thank you as always for your time. I hope you have a great day! Joshua [1] https://lore.kernel.org/all/20260807202059.2620949-1-joshua.hahnjy@gmail.com/