linux-kernel - Re: [PATCH v9 10/17] refcount: introduce __refcount_{add|inc}_not_zero

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Message-ID: <Z4Kla2HSvJ8mI0Dz@casper.infradead.org>
Date: Sat, 11 Jan 2025 17:07:55 +0000
From: Matthew Wilcox <willy@...radead.org>
To: David Laight <david.laight.linux@...il.com>
Cc: Suren Baghdasaryan <surenb@...gle.com>, akpm@...ux-foundation.org,
	peterz@...radead.org, liam.howlett@...cle.com,
	lorenzo.stoakes@...cle.com, mhocko@...e.com, vbabka@...e.cz,
	hannes@...xchg.org, mjguzik@...il.com, oliver.sang@...el.com,
	mgorman@...hsingularity.net, david@...hat.com, peterx@...hat.com,
	oleg@...hat.com, dave@...olabs.net, paulmck@...nel.org,
	brauner@...nel.org, dhowells@...hat.com, hdanton@...a.com,
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	jannh@...gle.com, shakeel.butt@...ux.dev, souravpanda@...gle.com,
	pasha.tatashin@...een.com, klarasmodin@...il.com,
	richard.weiyang@...il.com, corbet@....net,
	linux-doc@...r.kernel.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, kernel-team@...roid.com
Subject: Re: [PATCH v9 10/17] refcount: introduce
 __refcount_{add|inc}_not_zero_limited

On Sat, Jan 11, 2025 at 12:39:00PM +0000, David Laight wrote:
> I don't think the kernel compiles disable this optimisation.

You're wrong.