--- /dev/null
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "librbd/object_map/ResizeRequest.h"
+#include "common/dout.h"
+#include "common/errno.h"
+#include "librbd/ImageCtx.h"
+#include "librbd/ObjectMap.h"
+#include "cls/lock/cls_lock_client.h"
+
+#define dout_subsys ceph_subsys_rbd
+#undef dout_prefix
+#define dout_prefix *_dout << "librbd::object_map::ResizeRequest: "
+
+namespace librbd {
+namespace object_map {
+
+void ResizeRequest::resize(ceph::BitVector<2> *object_map, uint64_t num_objs,
+ uint8_t default_state) {
+ size_t orig_object_map_size = object_map->size();
+ object_map->resize(num_objs);
+ for (uint64_t i = orig_object_map_size; i < object_map->size(); ++i) {
+ (*object_map)[i] = default_state;
+ }
+}
+
+void ResizeRequest::send() {
+ CephContext *cct = m_image_ctx.cct;
+
+ RWLock::WLocker l(m_image_ctx.object_map_lock);
+ m_num_objs = Striper::get_num_objects(m_image_ctx.layout, m_new_size);
+
+ std::string oid(ObjectMap<>::object_map_name(m_image_ctx.id, m_snap_id));
+ ldout(cct, 5) << this << " resizing on-disk object map: "
+ << "ictx=" << &m_image_ctx << ", "
+ << "oid=" << oid << ", num_objs=" << m_num_objs << dendl;
+
+ librados::ObjectWriteOperation op;
+ if (m_snap_id == CEPH_NOSNAP) {
+ rados::cls::lock::assert_locked(&op, RBD_LOCK_NAME, LOCK_EXCLUSIVE, "", "");
+ }
+ cls_client::object_map_resize(&op, m_num_objs, m_default_object_state);
+
+ librados::AioCompletion *rados_completion = create_callback_completion();
+ int r = m_image_ctx.md_ctx.aio_operate(oid, rados_completion, &op);
+ assert(r == 0);
+ rados_completion->release();
+}
+
+void ResizeRequest::finish_request() {
+ RWLock::WLocker object_map_locker(m_image_ctx.object_map_lock);
+
+ CephContext *cct = m_image_ctx.cct;
+ ldout(cct, 5) << this << " resizing in-memory object map: "
+ << m_num_objs << dendl;
+
+ resize(m_object_map, m_num_objs, m_default_object_state);
+}
+
+} // namespace object_map
+} // namespace librbd