initial code repo

[stor4nfv.git] / src / ceph / src / librbd / object_map / Request.cc

diff --git a/src/ceph/src/librbd/object_map/Request.cc b/src/ceph/src/librbd/object_map/Request.cc
new file mode 100644 (file)
index 0000000..82aaa7d
--- /dev/null
+++ b/src/ceph/src/librbd/object_map/Request.cc
@@ -0,0 +1,69 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "librbd/object_map/Request.h"
+#include "common/dout.h"
+#include "common/errno.h"
+#include "common/RWLock.h"
+#include "librbd/ImageCtx.h"
+#include "librbd/object_map/InvalidateRequest.h"
+
+#define dout_subsys ceph_subsys_rbd
+#undef dout_prefix
+#define dout_prefix *_dout << "librbd::object_map::Request: "
+
+namespace librbd {
+namespace object_map {
+
+bool Request::should_complete(int r) {
+  CephContext *cct = m_image_ctx.cct;
+  ldout(cct, 20) << this << " should_complete: r=" << r << dendl;
+
+  switch (m_state)
+  {
+  case STATE_REQUEST:
+    if (r < 0) {
+      lderr(cct) << "failed to update object map: " << cpp_strerror(r)
+                << dendl;
+      return invalidate();
+    }
+
+    finish_request();
+    return true;
+
+  case STATE_INVALIDATE:
+    ldout(cct, 20) << "INVALIDATE" << dendl;
+    if (r < 0) {
+      lderr(cct) << "failed to invalidate object map: " << cpp_strerror(r)
+                << dendl;
+    }
+    return true;
+
+  default:
+    lderr(cct) << "invalid state: " << m_state << dendl;
+    assert(false);
+    break;
+  }
+  return false;
+}
+
+bool Request::invalidate() {
+  bool flags_set;
+  int r = m_image_ctx.test_flags(RBD_FLAG_OBJECT_MAP_INVALID, &flags_set);
+  if (r == 0 && flags_set) {
+    return true;
+  }
+
+  m_state = STATE_INVALIDATE;
+
+  RWLock::RLocker owner_locker(m_image_ctx.owner_lock);
+  RWLock::WLocker snap_locker(m_image_ctx.snap_lock);
+  InvalidateRequest<> *req = new InvalidateRequest<>(m_image_ctx, m_snap_id,
+                                                     true,
+                                                     create_callback_context());
+  req->send();
+  return false;
+}
+
+} // namespace object_map
+} // namespace librbd