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author | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-04-21 19:04:11 +0200 |
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committer | Paul E. McKenney <paulmck@kernel.org> | 2020-06-29 11:58:11 -0700 |
commit | 2d9c318bfd15394da014737bee30e7b2e22c5eac (patch) | |
tree | 5c1a82de875d943c554b4ac56040a0afd0e24c95 /Documentation/RCU | |
parent | f2286ab99549271f3cec73e305b9ecca95d91394 (diff) | |
download | linux-stable-2d9c318bfd15394da014737bee30e7b2e22c5eac.tar.gz linux-stable-2d9c318bfd15394da014737bee30e7b2e22c5eac.tar.bz2 linux-stable-2d9c318bfd15394da014737bee30e7b2e22c5eac.zip |
docs: RCU: Don't duplicate chapter names in rculist_nulls.rst
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@kernel.org>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'Documentation/RCU')
-rw-r--r-- | Documentation/RCU/rculist_nulls.rst | 6 |
1 files changed, 6 insertions, 0 deletions
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. |