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diff --git a/src/mongo/db/ops/write_ops_exec.h b/src/mongo/db/ops/write_ops_exec.h
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+/**
+ *    Copyright (C) 2016 MongoDB Inc.
+ *
+ *    This program is free software: you can redistribute it and/or  modify
+ *    it under the terms of the GNU Affero General Public License, version 3,
+ *    as published by the Free Software Foundation.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU Affero General Public License for more details.
+ *
+ *    You should have received a copy of the GNU Affero General Public License
+ *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ *    As a special exception, the copyright holders give permission to link the
+ *    code of portions of this program with the OpenSSL library under certain
+ *    conditions as described in each individual source file and distribute
+ *    linked combinations including the program with the OpenSSL library. You
+ *    must comply with the GNU Affero General Public License in all respects for
+ *    all of the code used other than as permitted herein. If you modify file(s)
+ *    with this exception, you may extend this exception to your version of the
+ *    file(s), but you are not obligated to do so. If you do not wish to do so,
+ *    delete this exception statement from your version. If you delete this
+ *    exception statement from all source files in the program, then also delete
+ *    it in the license file.
+ */
+
+#pragma once
+
+#include <boost/optional.hpp>
+#include <vector>
+
+#include "mongo/base/status_with.h"
+#include "mongo/db/operation_context.h"
+#include "mongo/db/ops/write_ops.h"
+#include "mongo/s/stale_exception.h"
+
+namespace mongo {
+
+/**
+ * The result of performing a single write, possibly within a batch.
+ */
+struct WriteResult {
+    struct SingleResult {
+        int64_t n;
+        int64_t nModified;
+        BSONObj upsertedId;  // Non-empty if something was upserted.
+    };
+
+    /**
+     * Maps 1-to-1 to single ops in request. May be shorter than input if there are errors.
+     *
+     * staleConfigException should be considered appended to this if it is non-null.
+     */
+    std::vector<StatusWith<SingleResult>> results;
+
+    /**
+     * If non-null, the SendStaleConfigException that was encountered while processing the op after
+     * the last op reported in results. Processing always stops at the first SCE and nothing is
+     * placed in results for the op that triggered it. The whole exception is copied here because it
+     * contains additional data not included in the Status.
+     *
+     * TODO convert to std::unique_ptr once we are on MSVC2015.
+     */
+    std::shared_ptr<SendStaleConfigException> staleConfigException;
+};
+
+
+/**
+ * Performs a batch of inserts, updates, or deletes.
+ *
+ * These functions handle all of the work of doing the writes, including locking, incrementing
+ * counters, managing CurOp, and of course actually doing the write. Waiting for the writeConcern is
+ * *not* handled by these functions and is expected to be done by the caller if needed.
+ *
+ * LastError is updated for failures of individual writes, but not for batch errors reported by an
+ * exception being thrown from these functions. Callers are responsible for managing LastError in
+ * that case. This should generally be combined with LastError handling from parse failures.
+ */
+WriteResult performInserts(OperationContext* txn, const InsertOp& op);
+WriteResult performUpdates(OperationContext* txn, const UpdateOp& op);
+WriteResult performDeletes(OperationContext* txn, const DeleteOp& op);
+
+}  // namespace mongo