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Tue, 16 Dec 2025 10:54:31 -0800 (PST) Message-ID: <4929c371-b264-4049-8618-095f748ef5c9@kernel.dk> Date: Tue, 16 Dec 2025 11:54:30 -0700 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: retiring laptop_mode? was Re: [PATCH] mm: vmscan: always allow writeback during memcg reclaim To: Johannes Weiner , Christoph Hellwig Cc: Deepanshu Kartikey , akpm@linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org References: <20251213083639.364539-1-kartikey406@gmail.com> <20251215041200.GB905277@cmpxchg.org> <20251215200838.GC905277@cmpxchg.org> <20251216185201.GH905277@cmpxchg.org> Content-Language: en-US From: Jens Axboe In-Reply-To: <20251216185201.GH905277@cmpxchg.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: D248916000E X-Stat-Signature: zp7heqgswo1es3mkhigmnsjj7spn8r76 X-Rspam-User: X-HE-Tag: 1765911273-174536 X-HE-Meta: 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 6qEXN+Ud 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 12/16/25 11:52 AM, Johannes Weiner wrote: > On Mon, Dec 15, 2025 at 11:41:07PM -0800, Christoph Hellwig wrote: >> On Mon, Dec 15, 2025 at 03:08:38PM -0500, Johannes Weiner wrote: >>> Debated whether to add some sort of deprecation sysctl handler, but at >>> least systemd-sysctl just prints a warning and still applies other >>> settings from the same config file. >> >> In general dropping sysctl will break things. So I think we'll need >> a stub, at which point it might as well warn for a while. > > Fair enough, I added that. > > Jens, that change seemed small enough that I carried your Ack, but > please let me know if you feel otherwise ;) That's fine, fwiw I fully agree with that change. -- Jens Axboe