update source to Ceph Pacific 16.2.2

[ceph.git] / ceph / src / librbd / cache / pwl / ssd / LogEntry.cc

diff --git a/ceph/src/librbd/cache/pwl/ssd/LogEntry.cc b/ceph/src/librbd/cache/pwl/ssd/LogEntry.cc
new file mode 100644 (file)
index 0000000..02bc2be
--- /dev/null
+++ b/ceph/src/librbd/cache/pwl/ssd/LogEntry.cc
@@ -0,0 +1,59 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include "librbd/cache/ImageWriteback.h"
+#include "librbd/cache/pwl/ssd/LogEntry.h"
+
+#define dout_subsys ceph_subsys_rbd_pwl
+#undef dout_prefix
+#define dout_prefix *_dout << "librbd::cache::pwl::ssd::WriteLogEntry: " \
+                           << this << " " <<  __func__ << ": "
+
+namespace librbd {
+namespace cache {
+namespace pwl {
+namespace ssd {
+
+void WriteLogEntry::init_cache_bl(
+    bufferlist &src_bl, uint64_t off, uint64_t len) {
+  cache_bl.clear();
+  cache_bl.substr_of(src_bl, off, len);
+}
+
+buffer::list& WriteLogEntry::get_cache_bl() {
+  std::lock_guard locker(m_entry_bl_lock);
+  return cache_bl;
+}
+
+void WriteLogEntry::remove_cache_bl() {
+    std::lock_guard locker(m_entry_bl_lock);
+    cache_bl.clear();
+}
+
+unsigned int WriteLogEntry::get_aligned_data_size() const {
+  if (cache_bl.length()) {
+    return round_up_to(cache_bl.length(), MIN_WRITE_ALLOC_SSD_SIZE);
+  }
+  return round_up_to(write_bytes(), MIN_WRITE_ALLOC_SSD_SIZE);
+}
+
+void WriteLogEntry::writeback_bl(
+    librbd::cache::ImageWritebackInterface &image_writeback,
+    Context *ctx, ceph::bufferlist&& bl) {
+    image_writeback.aio_write({{ram_entry.image_offset_bytes,
+                                ram_entry.write_bytes}},
+                               std::move(bl), 0, ctx);
+}
+
+void WriteSameLogEntry::writeback_bl(
+    librbd::cache::ImageWritebackInterface &image_writeback,
+    Context *ctx, ceph::bufferlist &&bl) {
+    image_writeback.aio_writesame(ram_entry.image_offset_bytes,
+                                  ram_entry.write_bytes,
+                                  std::move(bl), 0, ctx);
+}
+
+} // namespace ssd
+} // namespace pwl
+} // namespace cache
+} // namespace librbd