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From:   Jonathan Corbet <corbet@lwn.net>
To:     Andrew Halaney <ahalaney@redhat.com>
Cc:     peterz@infradead.org, mingo@redhat.com, will@kernel.org,
        longman@redhat.com, boqun.feng@gmail.com,
        linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
        Andrew Halaney <ahalaney@redhat.com>,
        Leah Leshchinsky <lleshchi@redhat.com>
Subject: Re: [PATCH] Documentation/locking/locktypes: Fix PREEMPT_RT _bh()
 description
In-Reply-To: <20220224212312.2601153-1-ahalaney@redhat.com>
References: <20220224212312.2601153-1-ahalaney@redhat.com>
Date:   Fri, 04 Mar 2022 10:13:46 -0700
Message-ID: <875yothc8l.fsf@meer.lwn.net>
MIME-Version: 1.0
Content-Type: text/plain
Precedence: bulk

Andrew Halaney <ahalaney@redhat.com> writes:

> With PREEMPT_RT the _bh() version of a spinlock leaves preemption
> enabled, align the doc to say that instead of the opposite.
>
> Reported-by: Leah Leshchinsky <lleshchi@redhat.com>
> Signed-off-by: Andrew Halaney <ahalaney@redhat.com>
> ---
>  Documentation/locking/locktypes.rst | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/Documentation/locking/locktypes.rst b/Documentation/locking/locktypes.rst
> index 4fd7b70fcde1..bfa75ea1b66a 100644
> --- a/Documentation/locking/locktypes.rst
> +++ b/Documentation/locking/locktypes.rst
> @@ -247,7 +247,7 @@ based on rt_mutex which changes the semantics:
>     Non-PREEMPT_RT kernels disable preemption to get this effect.
>  
>     PREEMPT_RT kernels use a per-CPU lock for serialization which keeps
> -   preemption disabled. The lock disables softirq handlers and also
> +   preemption enabled. The lock disables softirq handlers and also
>     prevents reentrancy due to task preemption.

Applied, thanks.

jon