SERVER-17364 Don't stash RecoveryUnits across getMores

We now tell PlanExecutors to detach from their OperationContexts and to shed
all storage engine resources before stashing the ClientCursor. This is a
heavier weight operation than a normal save/restoreState which is no longer
allowed to change the OperationContext.

1 files changed, 0 insertions, 21 deletions

diff --git a/src/mongo/db/query/find.h b/src/mongo/db/query/find.h
index 04675f44d7b..8afaf16b334 100644
--- a/src/mongo/db/query/find.h
+++ b/src/mongo/db/query/find.h
@@ -41,27 +41,6 @@ namespace mongo {
 class NamespaceString;
 class OperationContext;
 
-class ScopedRecoveryUnitSwapper {
-public:
-    ScopedRecoveryUnitSwapper(ClientCursor* cc, OperationContext* txn);
-
-    ~ScopedRecoveryUnitSwapper();
-
-    /**
-     * Dismissing the RU swapper causes it to simply free the recovery unit rather than swapping
-     * it back into the ClientCursor.
-     */
-    void dismiss();
-
-private:
-    ClientCursor* _cc;
-    OperationContext* _txn;
-    bool _dismissed;
-
-    std::unique_ptr<RecoveryUnit> _txnPreviousRecoveryUnit;
-    OperationContext::RecoveryUnitState _txnPreviousRecoveryUnitState;
-};
-
 /**
  * Returns true if enough results have been prepared to stop adding more to the first batch.
  *