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| author | Alan Huang <mmpgouride@gmail.com> | 2023-06-13 00:57:01 +0000 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2023-07-14 14:55:56 -0700 |
| commit | bc25e7c3598e56992120505ea09f6cf0651da63b (patch) | |
| tree | adbd6e596c02ecf5c563dccec0fe5a60d30d63d6 /Documentation/RCU | |
| parent | 401013e2ad9e1ba329a91a7b66779d8cb780bcd0 (diff) | |
docs/RCU: Add the missing rcu_read_unlock()
We should exit the RCU read-side critical section before re-entering.
Signed-off-by: Alan Huang <mmpgouride@gmail.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'Documentation/RCU')
| -rw-r--r-- | Documentation/RCU/rculist_nulls.rst | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/Documentation/RCU/rculist_nulls.rst b/Documentation/RCU/rculist_nulls.rst index 9a734bf54b76..0612a6387d8e 100644 --- a/Documentation/RCU/rculist_nulls.rst +++ b/Documentation/RCU/rculist_nulls.rst @@ -29,8 +29,10 @@ algorithms: rcu_read_lock() obj = lockless_lookup(key); if (obj) { - if (!try_get_ref(obj)) // might fail for free objects + if (!try_get_ref(obj)) { // might fail for free objects + rcu_read_unlock(); goto begin; + } /* * Because a writer could delete object, and a writer could * reuse these object before the RCU grace period, we |