linux-kernel - [PATCH 10/10] docs: RCU: rculist_nulls.rst: don't duplicate chapter names

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Message-Id: <6ec433635785b2f25f952c70fb7bcfbab858a6a4.1587488137.git.mchehab+huawei@kernel.org>
Date:   Tue, 21 Apr 2020 19:04:11 +0200
From:   Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
To:     Linux Doc Mailing List <linux-doc@...r.kernel.org>
Cc:     Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        linux-kernel@...r.kernel.org, Jonathan Corbet <corbet@....net>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        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
Subject: [PATCH 10/10] docs: RCU: rculist_nulls.rst: don't duplicate chapter names

Since changeset 58ad30cf91f0 ("docs: fix reference to core-api/namespaces.rst"),
auto-references for chapters are generated. This is a nice feature, but
has a drawback: no chapters can have the same sumber.

So, we need to add two higher hierarchy chapters on this document,
in order to avoid such duplication.

Fixes: 58ad30cf91f0 ("docs: fix reference to core-api/namespaces.rst")
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>
---
 Documentation/RCU/rculist_nulls.rst | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/RCU/rculist_nulls.rst b/Documentation/RCU/rculist_nulls.rst
index d40374221d69..a9fc774bc400 100644
--- a/Documentation/RCU/rculist_nulls.rst
+++ b/Documentation/RCU/rculist_nulls.rst
@@ -10,6 +10,9 @@ objects using SLAB_TYPESAFE_BY_RCU allocations.
 
 Please read the basics in Documentation/RCU/listRCU.rst
 
+Using 'nulls'
+=============
+
 Using special makers (called 'nulls') is a convenient way
 to solve following problem :
 
@@ -126,6 +129,9 @@ very very fast (before the end of RCU grace period)
 
 --------------------------------------------------------------------------
 
+Avoiding extra smp_rmb()
+========================
+
 With hlist_nulls we can avoid extra smp_rmb() in lockless_lookup()
 and extra smp_wmb() in insert function.
 
-- 
2.25.2