From: xie xingguo <xie.xingguo@zte.com.cn>
Date: Mon, 18 Jul 2016 03:31:43 +0000 (+0800)
Subject: os/bluestore: make csum_type checking more efficient
X-Git-Tag: ses5-milestone5~354^2~4
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=1c07f2e2e82e81c0bfeee4e7cc0d41d8e9cc1e7e;p=ceph.git

os/bluestore: make csum_type checking more efficient

Signed-off-by: xie xingguo <xie.xingguo@zte.com.cn>
---

diff --git a/src/os/bluestore/BlueStore.cc b/src/os/bluestore/BlueStore.cc
index cc91d89af6f2..8f1548a7c976 100644
--- a/src/os/bluestore/BlueStore.cc
+++ b/src/os/bluestore/BlueStore.cc
@@ -1478,12 +1478,14 @@ void BlueStore::_set_compression()
 
 void BlueStore::_set_csum()
 {
-  int t = bluestore_blob_t::get_csum_string_type(
-    g_conf->bluestore_csum_type);
-  if (t < 0 || !g_conf->bluestore_csum) {
-    t = bluestore_blob_t::CSUM_NONE;
+  csum_type = bluestore_blob_t::CSUM_NONE;
+  if (g_conf->bluestore_csum) {
+    int t = bluestore_blob_t::get_csum_string_type(
+            g_conf->bluestore_csum_type);
+    if (t > bluestore_blob_t::CSUM_NONE)
+      csum_type = t;
   }
-  csum_type = t;
+
   dout(10) << __func__ << " csum_type "
 	   << bluestore_blob_t::get_csum_type_string(csum_type)
 	   << dendl;