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diff --git a/src/ceph/src/librbd/exclusive_lock/PreReleaseRequest.h b/src/ceph/src/librbd/exclusive_lock/PreReleaseRequest.h
deleted file mode 100644
index 34ac07a..0000000
--- a/src/ceph/src/librbd/exclusive_lock/PreReleaseRequest.h
+++ /dev/null
@@ -1,117 +0,0 @@
-// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
-// vim: ts=8 sw=2 smarttab
-
-#ifndef CEPH_LIBRBD_EXCLUSIVE_LOCK_PRE_RELEASE_REQUEST_H
-#define CEPH_LIBRBD_EXCLUSIVE_LOCK_PRE_RELEASE_REQUEST_H
-
-#include "librbd/ImageCtx.h"
-#include <string>
-
-class AsyncOpTracker;
-class Context;
-
-namespace librbd {
-
-struct ImageCtx;
-
-namespace exclusive_lock {
-
-template <typename ImageCtxT = ImageCtx>
-class PreReleaseRequest {
-public:
-  static PreReleaseRequest* create(ImageCtxT &image_ctx, bool shutting_down,
-                                   AsyncOpTracker &async_op_tracker,
-                                   Context *on_finish);
-
-  ~PreReleaseRequest();
-  void send();
-
-private:
-  /**
-   * @verbatim
-   *
-   * <start>
-   *    |
-   *    v
-   * PREPARE_LOCK
-   *    |
-   *    v
-   * CANCEL_OP_REQUESTS
-   *    |
-   *    v
-   * BLOCK_WRITES
-   *    |
-   *    v
-   * WAIT_FOR_OPS
-   *    |
-   *    v
-   * INVALIDATE_CACHE
-   *    |
-   *    v
-   * FLUSH_NOTIFIES . . . . . . . . . . . . . .
-   *    |                                     .
-   *    v                                     .
-   * CLOSE_JOURNAL                            .
-   *    |                (journal disabled,   .
-   *    v                 object map enabled) .
-   * CLOSE_OBJECT_MAP < . . . . . . . . . . . .
-   *    |                                     .
-   *    v               (object map disabled) .
-   * <finish> < . . . . . . . . . . . . . . . . .
-   *
-   * @endverbatim
-   */
-
-  PreReleaseRequest(ImageCtxT &image_ctx, bool shutting_down,
-                    AsyncOpTracker &async_op_tracker, Context *on_finish);
-
-  ImageCtxT &m_image_ctx;
-  bool m_shutting_down;
-  AsyncOpTracker &m_async_op_tracker;
-  Context *m_on_finish;
-
-  int m_error_result = 0;
-
-  decltype(m_image_ctx.object_map) m_object_map = nullptr;
-  decltype(m_image_ctx.journal) m_journal = nullptr;
-
-  void send_prepare_lock();
-  void handle_prepare_lock(int r);
-
-  void send_cancel_op_requests();
-  void handle_cancel_op_requests(int r);
-
-  void send_block_writes();
-  void handle_block_writes(int r);
-
-  void send_wait_for_ops();
-  void handle_wait_for_ops(int r);
-
-  void send_invalidate_cache(bool purge_on_error);
-  void handle_invalidate_cache(int r);
-
-  void send_flush_notifies();
-  void handle_flush_notifies(int r);
-
-  void send_close_journal();
-  void handle_close_journal(int r);
-
-  void send_close_object_map();
-  void handle_close_object_map(int r);
-
-  void send_unlock();
-
-  void finish();
-
-  void save_result(int result) {
-    if (m_error_result == 0 && result < 0) {
-      m_error_result = result;
-    }
-  }
-
-};
-
-} // namespace exclusive_lock
-} // namespace librbd
-
-#endif // CEPH_LIBRBD_EXCLUSIVE_LOCK_PRE_RELEASE_REQUEST_H