Fix a read-write mutex locking issue in the metadata hub.

diff --git a/metadata_hub.c b/metadata_hub.c
index 3ddbcb4dba36508cb700e92822d5a0ff40483782..cf19aa8540b037dda8fbdd453d4c19acfe9dc10e 100644 (file)
--- a/metadata_hub.c
+++ b/metadata_hub.c
@@ -151,7 +151,7 @@ void metadata_hub_modify_prolog(void) {
   // debug(1, "locking metadata hub for writing");
   if (pthread_rwlock_trywrlock(&metadata_hub_re_lock) != 0) {
     debug(2, "Metadata_hub write lock is already taken -- must wait.");
-    pthread_rwlock_unlock(&metadata_hub_re_lock);
+    pthread_rwlock_wrlock(&metadata_hub_re_lock);
     debug(2, "Okay -- acquired the metadata_hub write lock.");
   }
 }