osdc: improved discard_set signature const correctness

Signed-off-by: Jason Dillaman <dillaman@redhat.com>

diff --git a/src/osdc/ObjectCacher.cc b/src/osdc/ObjectCacher.cc
index d1f80209c79448acfc80af3ab83016c18b2a31b6..d3aeb5a372cc5a466079b226f1fd68548699d3f9 100644 (file)
--- a/src/osdc/ObjectCacher.cc
+++ b/src/osdc/ObjectCacher.cc
@@ -1967,7 +1967,7 @@ void ObjectCacher::clear_nonexistence(ObjectSet *oset)
 /**
  * discard object extents from an ObjectSet by removing the objects in exls from the in-memory oset.
  */
-void ObjectCacher::discard_set(ObjectSet *oset, vector<ObjectExtent>& exls)
+void ObjectCacher::discard_set(ObjectSet *oset, const vector<ObjectExtent>& exls)
 {
   assert(lock.is_locked());
   if (oset->objects.empty()) {
@@ -1979,11 +1979,11 @@ void ObjectCacher::discard_set(ObjectSet *oset, vector<ObjectExtent>& exls)
 
   bool were_dirty = oset->dirty_or_tx > 0;
 
-  for (vector<ObjectExtent>::iterator p = exls.begin();
+  for (vector<ObjectExtent>::const_iterator p = exls.begin();
        p != exls.end();
        ++p) {
     ldout(cct, 10) << "discard_set " << oset << " ex " << *p << dendl;
-    ObjectExtent &ex = *p;
+    const ObjectExtent &ex = *p;
     sobject_t soid(ex.oid, CEPH_NOSNAP);
     if (objects[oset->poolid].count(soid) == 0)
       continue;

diff --git a/src/osdc/ObjectCacher.h b/src/osdc/ObjectCacher.h
index eeed83a523131fb1468283e840c3c3624cb8206f..c3b3b639c2227abf920a78a70251df070b1931b7 100644 (file)
--- a/src/osdc/ObjectCacher.h
+++ b/src/osdc/ObjectCacher.h
@@ -635,7 +635,7 @@ public:
   loff_t release_set(ObjectSet *oset);  // returns # of bytes not released (ie non-clean)
   uint64_t release_all();
 
-  void discard_set(ObjectSet *oset, vector<ObjectExtent>& ex);
+  void discard_set(ObjectSet *oset, const vector<ObjectExtent>& ex);
 
   /**
    * Retry any in-flight reads that get -ENOENT instead of marking