os/bluestore: speed up omap-key generation for same onode

This is useful if we have to batch-process omap kvs.

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 aa837b69488485403151d3331de9dc26e674f6bd..13b29e71be28ffb382de55a4dc938600c190d09e 100644 (file)
--- a/src/os/bluestore/BlueStore.cc
+++ b/src/os/bluestore/BlueStore.cc
@@ -8511,14 +8511,17 @@ int BlueStore::_omap_setkeys(TransContext *txc,
     o->onode.omap_head = o->onode.nid;
     txc->write_onode(o);
   }
+  string final_key;
+  _key_encode_u64(o->onode.omap_head, &final_key);
+  final_key.push_back('.');
   ::decode(num, p);
   while (num--) {
     string key;
     bufferlist value;
     ::decode(key, p);
     ::decode(value, p);
-    string final_key;
-    get_omap_key(o->onode.omap_head, key, &final_key);
+    final_key.resize(9); // keep prefix
+    final_key += key;
     dout(30) << __func__ << "  " << pretty_binary_string(final_key)
             << " <- " << key << dendl;
     txc->t->set(PREFIX_OMAP, final_key, value);
@@ -8556,16 +8559,19 @@ int BlueStore::_omap_rmkeys(TransContext *txc,
   int r = 0;
   bufferlist::iterator p = bl.begin();
   __u32 num;
+  string final_key;
 
   if (!o->onode.omap_head) {
     goto out;
   }
+  _key_encode_u64(o->onode.omap_head, &final_key);
+  final_key.push_back('.');
   ::decode(num, p);
   while (num--) {
     string key;
     ::decode(key, p);
-    string final_key;
-    get_omap_key(o->onode.omap_head, key, &final_key);
+    final_key.resize(9); // keep prefix
+    final_key += key;
     dout(30) << __func__ << "  rm " << pretty_binary_string(final_key)
             << " <- " << key << dendl;
     txc->t->rmkey(PREFIX_OMAP, final_key);