From: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Date: Wed, 30 Sep 2009 14:08:29 +0000 (-0400)
Subject: urcu-ht: fix steal stolen flag, only in first pass.
X-Git-Tag: v0.7.0~43^2~239^2~1
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=85f6ba5f7a5b91ecb4a7a8a6d66cd17ff481de21;p=userspace-rcu.git

urcu-ht: fix steal stolen flag, only in first pass.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
---

diff --git a/urcu-ht.c b/urcu-ht.c
index 500b8d3..183fcb1 100644
--- a/urcu-ht.c
+++ b/urcu-ht.c
@@ -174,9 +174,14 @@ retry:
 		node = rcu_dereference(*prev);
 	}
 
-	/* Another concurrent thread stole it ? If so, let it deal with this. */
-	if (cmpxchg(&node->stolen, 0, 1) != 0)
-		goto error;
+	if (!del_node) {
+		/*
+		 * Another concurrent thread stole it ? If so, let it deal with
+		 * this.
+		 */
+		if (cmpxchg(&node->stolen, 0, 1) != 0)
+			goto error;
+	}
 
 	/* Found it ! pointer to object is in "prev" */
 	if (rcu_cmpxchg_pointer(prev, node, node->next) == node)