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Date:   Mon, 22 Mar 2021 10:01:32 +0100
From:   Peter Zijlstra <peterz@infradead.org>
To:     Thomas Gleixner <tglx@linutronix.de>
Cc:     LKML <linux-kernel@vger.kernel.org>,
        Ingo Molnar <mingo@kernel.org>, Will Deacon <will@kernel.org>,
        Waiman Long <longman@redhat.com>,
        Boqun Feng <boqun.feng@gmail.com>
Subject: Re: locking/mutex: Fix non debug version of mutex_lock_io_nested()
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On Mon, Mar 22, 2021 at 09:46:13AM +0100, Thomas Gleixner wrote:
> If CONFIG_DEBUG_LOCK_ALLOC=n then mutex_lock_io_nested() maps to
> mutex_lock() which is clearly wrong because mutex_lock() lacks the
> io_schedule_prepare()/finish() invocations.
> 
> Map it to mutex_lock_io().

Thanks!