X-Git-Url: https://git.liburcu.org/?a=blobdiff_plain;f=urcu-call-rcu-impl.h;h=f9250e8b4129b925aeb7b47f609d3e91dd3f790d;hb=4dd4a47355d9d870d482248786b4adf8b1317bfe;hp=6e80fa98c8aea9ebd7a7a835ea8fa3c52546228e;hpb=1e92aa15bf1b60dd65c20dceb934680c77e84dd5;p=urcu.git

diff --git a/urcu-call-rcu-impl.h b/urcu-call-rcu-impl.h
index 6e80fa9..f9250e8 100644
--- a/urcu-call-rcu-impl.h
+++ b/urcu-call-rcu-impl.h
@@ -396,12 +396,21 @@ int set_cpu_call_rcu_data(int cpu, struct call_rcu_data *crdp)
 		errno = EINVAL;
 		return -EINVAL;
 	}
-	call_rcu_unlock(&call_rcu_mutex);
+
 	if (per_cpu_call_rcu_data == NULL) {
+		call_rcu_unlock(&call_rcu_mutex);
 		errno = ENOMEM;
 		return -ENOMEM;
 	}
+
+	if (per_cpu_call_rcu_data[cpu] != NULL && crdp != NULL) {
+		call_rcu_unlock(&call_rcu_mutex);
+		errno = EEXIST;
+		return -EEXIST;
+	}
+
 	per_cpu_call_rcu_data[cpu] = crdp;
+	call_rcu_unlock(&call_rcu_mutex);
 	return 0;
 }
 
@@ -513,8 +522,13 @@ int create_all_cpu_call_rcu_data(unsigned long flags)
 		}
 		call_rcu_unlock(&call_rcu_mutex);
 		if ((ret = set_cpu_call_rcu_data(i, crdp)) != 0) {
-			/* FIXME: Leaks crdp for now. */
-			return ret; /* Can happen on race. */
+			call_rcu_data_free(crdp);
+
+			/* it has been created by other thread */
+			if (ret == -EEXIST)
+				continue;
+
+			return ret;
 		}
 	}
 	return 0;