linux-kernel - Re: [PATCH -rcu] rculist: Replace reference to atomic

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Date:   Fri, 15 Jan 2021 10:21:21 -0800
From:   "Paul E. McKenney" <paulmck@...nel.org>
To:     Akira Yokosawa <akiyks@...il.com>
Cc:     Josh Triplett <josh@...htriplett.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Lai Jiangshan <jiangshanlai@...il.com>,
        Joel Fernandes <joel@...lfernandes.org>, rcu@...r.kernel.org,
        linux-kernel@...r.kernel.org, Peter Zijlstra <peterz@...radead.org>
Subject: Re: [PATCH -rcu] rculist: Replace reference to atomic_ops.rst

On Sat, Jan 16, 2021 at 12:11:45AM +0900, Akira Yokosawa wrote:
> >From f92cae321e9a42a1d4bc8a2d5d1a2cd62ab35410 Mon Sep 17 00:00:00 2001
> From: Akira Yokosawa <akiyks@...il.com>
> Date: Fri, 15 Jan 2021 23:39:03 +0900
> Subject: [PATCH -rcu] rculist: Replace reference to atomic_ops.rst
> 
> atomic_ops.rst was removed in commit f0400a77ebdc ("atomic: Delete
> obsolete documentation").
> Instead, reference a section in memory-barriers.txt discussing
> the use of barrier() in loops.
> 
> Cc: Peter Zijlstra <peterz@...radead.org>
> Signed-off-by: Akira Yokosawa <akiyks@...il.com>

Queued, thank you!

							Thanx, Paul

> ---
>  include/linux/rculist_nulls.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/include/linux/rculist_nulls.h b/include/linux/rculist_nulls.h
> index ff3e94779e73..d8afdb8784c1 100644
> --- a/include/linux/rculist_nulls.h
> +++ b/include/linux/rculist_nulls.h
> @@ -161,7 +161,7 @@ static inline void hlist_nulls_add_fake(struct hlist_nulls_node *n)
>   *
>   * The barrier() is needed to make sure compiler doesn't cache first element [1],
>   * as this loop can be restarted [2]
> - * [1] Documentation/core-api/atomic_ops.rst around line 114
> + * [1] Documentation/memory-barriers.txt around line 1533
>   * [2] Documentation/RCU/rculist_nulls.rst around line 146
>   */
>  #define hlist_nulls_for_each_entry_rcu(tpos, pos, head, member)			\
> -- 
> 2.17.1
>