mds: drop gather if it's empty

This can happen from scatter_nudge, which may add a sub and then complete it, emptying out the C_Gather.
goldwynr · Mar 18, 2010 · 965d737 · 965d737
1 parent 83203b5
commit 965d737
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/src/mds/journal.cc b/src/mds/journal.cc
@@ -296,6 +296,11 @@ C_Gather *LogSegment::try_to_expire(MDS *mds)
     }
   }
 
+  if (gather && gather->empty()) {
+    delete gather;
+    gather = NULL;
+  }
+
   if (gather) {
     dout(6) << "LogSegment(" << offset << ").try_to_expire waiting" << dendl;
     mds->mdlog->flush();