rgw: drop unused vector elements

Signed-off-by: Bingyin Zhang <zhangbingyin@cloudin.cn>

diff --git a/src/rgw/rgw_rados.cc b/src/rgw/rgw_rados.cc
index f55b9a84f68cdf6f154ee7ba6f75e61f3f22e47c..1025328b3878e41108a3fd487eb712beb625386c 100644 (file)
--- a/src/rgw/rgw_rados.cc
+++ b/src/rgw/rgw_rados.cc
@@ -12831,9 +12831,12 @@ int RGWRados::cls_bucket_list(RGWBucketInfo& bucket_info, int shard_id, rgw_obj_
     return r;
 
   // Create a list of iterators that are used to iterate each shard
-  vector<map<string, struct rgw_bucket_dir_entry>::iterator> vcurrents(list_results.size());
-  vector<map<string, struct rgw_bucket_dir_entry>::iterator> vends(list_results.size());
-  vector<string> vnames(list_results.size());
+  vector<map<string, struct rgw_bucket_dir_entry>::iterator> vcurrents;
+  vector<map<string, struct rgw_bucket_dir_entry>::iterator> vends;
+  vector<string> vnames;
+  vcurrents.reserve(list_results.size());
+  vends.reserve(list_results.size());
+  vnames.reserve(list_results.size());
   map<int, struct rgw_cls_list_ret>::iterator iter = list_results.begin();
   *is_truncated = false;
   for (; iter != list_results.end(); ++iter) {