linux-kernel - Re: retiring laptop_mode? was Re: [PATCH] mm: vmscan: always allow writeback during memcg reclaim

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Message-ID: <4929c371-b264-4049-8618-095f748ef5c9@kernel.dk>
Date: Tue, 16 Dec 2025 11:54:30 -0700
From: Jens Axboe <axboe@...nel.dk>
To: Johannes Weiner <hannes@...xchg.org>,
 Christoph Hellwig <hch@...radead.org>
Cc: Deepanshu Kartikey <kartikey406@...il.com>, akpm@...ux-foundation.org,
 linux-mm@...ck.org, linux-kernel@...r.kernel.org, linux-block@...r.kernel.org
Subject: Re: retiring laptop_mode? was Re: [PATCH] mm: vmscan: always allow
 writeback during memcg reclaim

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