From: Haomai Wang <haomaiwang@gmail.com>
Date: Tue, 26 May 2015 04:34:08 +0000 (+0800)
Subject: KeyValueStore: Avoid extra lookup for map
X-Git-Tag: v9.0.2~109^2~1
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=7b5fc500059a7f8f7a696edbb9fb8337cfb596ab;p=ceph.git

KeyValueStore: Avoid extra lookup for map

Signed-off-by: Haomai Wang <haomaiwang@gmail.com>
---

diff --git a/src/os/KeyValueStore.cc b/src/os/KeyValueStore.cc
index 02303a908284..1204a692c7ce 100644
--- a/src/os/KeyValueStore.cc
+++ b/src/os/KeyValueStore.cc
@@ -376,9 +376,10 @@ void KeyValueStore::BufferTransaction::set_buffer_keys(
   store->backend->set_keys(strip_header->header, prefix, values, t);
 
   uniq_id uid = make_pair(strip_header->cid, strip_header->oid);
+  map<pair<string, string>, bufferlist> &uid_buffers = buffers[uid];
   for (map<string, bufferlist>::iterator iter = values.begin();
        iter != values.end(); ++iter) {
-    buffers[uid][make_pair(prefix, iter->first)].swap(iter->second);
+    uid_buffers[make_pair(prefix, iter->first)].swap(iter->second);
   }
 }