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Docs/RCU/rculist_nulls: Fix text about atomic_set_release()
The document says we can avoid extra _release() in insert function when
hlist_nulls is used, but that's not true[1]. Drop it.
[1] https://lore.kernel.org/rcu/46440869-644a-4982-b790-b71b43976c66@paulmck-laptop/
Signed-off-by: SeongJae Park <sj@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
authored by
SeongJae Park
and committed by
Paul E. McKenney
47d63d7a
d186204a
+4
-2
+4
-2
Documentation/RCU/rculist_nulls.rst
+4
-2
Documentation/RCU/rculist_nulls.rst
···
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Avoiding extra smp_rmb()
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========================
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With hlist_nulls we can avoid extra smp_rmb() in lockless_lookup()
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and extra _release() in insert function.
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With hlist_nulls we can avoid extra smp_rmb() in lockless_lookup().
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For example, if we choose to store the slot number as the 'nulls'
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end-of-list marker for each slot of the hash table, we can detect
···
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2) Insert algorithm
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-------------------
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Same to the above one, but uses hlist_nulls_add_head_rcu() instead of
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hlist_add_head_rcu().
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::
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