linux-kernel - [PATCH 4/4] Docs/RCU/rculist_nulls: Drop unnecessary '

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Message-Id: <20230518224008.2468-5-sj@kernel.org>
Date:   Thu, 18 May 2023 22:40:08 +0000
From:   SeongJae Park <sj@...nel.org>
To:     paulmck@...nel.org
Cc:     SeongJae Park <sj@...nel.org>, joel@...lfernandes.org,
        corbet@....net, rcu@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 4/4] Docs/RCU/rculist_nulls: Drop unnecessary '_release' in insert function

The document says we can avoid extra smp_rmb() in lockless_lookup() and
extra _release() in insert function when hlist_nulls is used.  However,
the example code snippet for the insert function is still using the
extra _release().  Drop it.

Signed-off-by: SeongJae Park <sj@...nel.org>
---
 Documentation/RCU/rculist_nulls.rst | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/RCU/rculist_nulls.rst b/Documentation/RCU/rculist_nulls.rst
index 5cd6f3f8810f..463270273d89 100644
--- a/Documentation/RCU/rculist_nulls.rst
+++ b/Documentation/RCU/rculist_nulls.rst
@@ -191,7 +191,7 @@ scan the list again without harm.
   obj = kmem_cache_alloc(cachep);
   lock_chain(); // typically a spin_lock()
   obj->key = key;
-  atomic_set_release(&obj->refcnt, 1); // key before refcnt
+  atomic_set(&obj->refcnt, 1);
   /*
    * insert obj in RCU way (readers might be traversing chain)
    */
-- 
2.25.1