linux-kernel - Re: [PATCH v5 22/36] um: Fix incorrect __acquires/_

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Message-ID: <8086c568-9386-4231-b928-3e887c8679b4@acm.org>
Date: Fri, 19 Dec 2025 13:05:56 -0800
From: Bart Van Assche <bvanassche@....org>
To: Marco Elver <elver@...gle.com>, Peter Zijlstra <peterz@...radead.org>,
 Boqun Feng <boqun.feng@...il.com>, Ingo Molnar <mingo@...nel.org>,
 Will Deacon <will@...nel.org>
Cc: "David S. Miller" <davem@...emloft.net>,
 Luc Van Oostenryck <luc.vanoostenryck@...il.com>,
 Chris Li <sparse@...isli.org>, "Paul E. McKenney" <paulmck@...nel.org>,
 Alexander Potapenko <glider@...gle.com>, Arnd Bergmann <arnd@...db.de>,
 Christoph Hellwig <hch@....de>, Dmitry Vyukov <dvyukov@...gle.com>,
 Eric Dumazet <edumazet@...gle.com>, Frederic Weisbecker
 <frederic@...nel.org>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Herbert Xu <herbert@...dor.apana.org.au>, Ian Rogers <irogers@...gle.com>,
 Jann Horn <jannh@...gle.com>, Joel Fernandes <joelagnelf@...dia.com>,
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 <justinstitt@...gle.com>, Kees Cook <kees@...nel.org>,
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 Nick Desaulniers <nick.desaulniers+lkml@...il.com>,
 Steven Rostedt <rostedt@...dmis.org>,
 Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
 Thomas Gleixner <tglx@...utronix.de>, Thomas Graf <tgraf@...g.ch>,
 Uladzislau Rezki <urezki@...il.com>, Waiman Long <longman@...hat.com>,
 kasan-dev@...glegroups.com, linux-crypto@...r.kernel.org,
 linux-doc@...r.kernel.org, linux-kbuild@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-mm@...ck.org,
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 linux-wireless@...r.kernel.org, llvm@...ts.linux.dev, rcu@...r.kernel.org,
 kernel test robot <lkp@...el.com>, Johannes Berg
 <johannes@...solutions.net>, Tiwei Bie <tiwei.btw@...group.com>
Subject: Re: [PATCH v5 22/36] um: Fix incorrect __acquires/__releases
 annotations

On 12/19/25 7:40 AM, Marco Elver wrote:
> -void enter_turnstile(struct mm_id *mm_id) __acquires(turnstile)
> +struct mutex *__get_turnstile(struct mm_id *mm_id)
>   {
>   	struct mm_context *ctx = container_of(mm_id, struct mm_context, id);
>   
> -	mutex_lock(&ctx->turnstile);
> +	return &ctx->turnstile;
>   }

Many "container_of()" wrappers have "to" in their name. Please follow
that convention and rename this function into e.g. mm_id_to_turnstile().

Thanks,

Bart.