linux-kernel - [PATCH tip/core/rcu 08/10] docs: RCU: Don't duplicate chapter names in rculist

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Message-Id: <20200623000947.25222-8-paulmck@kernel.org>
Date:   Mon, 22 Jun 2020 17:09:45 -0700
From:   paulmck@...nel.org
To:     rcu@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, kernel-team@...com, mingo@...nel.org,
        jiangshanlai@...il.com, dipankar@...ibm.com,
        akpm@...ux-foundation.org, mathieu.desnoyers@...icios.com,
        josh@...htriplett.org, tglx@...utronix.de, peterz@...radead.org,
        rostedt@...dmis.org, dhowells@...hat.com, edumazet@...gle.com,
        fweisbec@...il.com, oleg@...hat.com, joel@...lfernandes.org,
        Mauro Carvalho Chehab <mchehab+huawei@...nel.org>,
        "Paul E . McKenney" <paulmck@...nel.org>
Subject: [PATCH tip/core/rcu 08/10] docs: RCU: Don't duplicate chapter names in rculist_nulls.rst

From: Mauro Carvalho Chehab <mchehab+huawei@...nel.org>

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>
Signed-off-by: Paul E. McKenney <paulmck@...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 d403742..a9fc774 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.
 
-- 
2.9.5