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Fix dummy node insertion bug
[userspace-rcu.git]
/
rculfhash.c
diff --git
a/rculfhash.c
b/rculfhash.c
index 6e07878a1c3db3c2afac4700727491a2aa8be3ea..a736b868ae7dac21c1d4d60d561cfcfbb1d223e9 100644
(file)
--- a/
rculfhash.c
+++ b/
rculfhash.c
@@
-887,6
+887,9
@@
struct cds_lfht_node *_cds_lfht_add(struct cds_lfht *ht,
goto insert;
if (likely(clear_flag(iter)->p.reverse_hash > node->p.reverse_hash))
goto insert;
goto insert;
if (likely(clear_flag(iter)->p.reverse_hash > node->p.reverse_hash))
goto insert;
+ /* dummy node is the first node of the identical-hash-value chain */
+ if (dummy && clear_flag(iter)->p.reverse_hash == node->p.reverse_hash)
+ goto insert;
next = rcu_dereference(clear_flag(iter)->p.next);
if (unlikely(is_removed(next)))
goto gc_node;
next = rcu_dereference(clear_flag(iter)->p.next);
if (unlikely(is_removed(next)))
goto gc_node;
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