1 files changed, 38 insertions, 0 deletions
diff --git a/src/librbd/plugin/ParentCache.h b/src/librbd/plugin/ParentCache.h
new file mode 100644
index 000000000..1039efff9
--- /dev/null
+++ b/src/librbd/plugin/ParentCache.h
@@ -0,0 +1,38 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#ifndef CEPH_LIBRBD_PLUGIN_PARENT_CACHE_H
+#define CEPH_LIBRBD_PLUGIN_PARENT_CACHE_H
+
+#include "librbd/plugin/Types.h"
+#include "include/Context.h"
+
+namespace librbd {
+
+struct ImageCtx;
+
+namespace plugin {
+
+template <typename ImageCtxT>
+class ParentCache : public Interface<ImageCtxT> {
+public:
+  ParentCache(CephContext* cct) : Interface<ImageCtxT>(cct) {
+  }
+
+  void init(ImageCtxT* image_ctx, Api<ImageCtxT>& api,
+            cache::ImageWritebackInterface& image_writeback,
+            PluginHookPoints& hook_points_list,
+            Context* on_finish) override;
+
+private:
+  void handle_init_parent_cache(int r, Context* on_finish);
+  using ceph::Plugin::cct;
+
+};
+
+} // namespace plugin
+} // namespace librbd
+
+extern template class librbd::plugin::ParentCache<librbd::ImageCtx>;
+
+#endif // CEPH_LIBRBD_PLUGIN_PARENT_CACHE_H