[space map disk] Add get_nr_blocks_in_data_sm()

which just uses the root
2016-03-21 17:16:41 +00:00
parent 2cf0c84ce3
commit a21f97e405
2 changed files with 16 additions and 0 deletions
--- a/persistent-data/space-maps/disk.cc
+++ b/persistent-data/space-maps/disk.cc
@@ -773,4 +773,15 @@ persistent_data::open_metadata_sm(transaction_manager &tm, void *root)
 			checked_space_map::ptr(new sm_disk(store, tm, v))));
 }

+block_address
+persistent_data::get_nr_blocks_in_data_sm(transaction_manager &tm, void *root)
+{
+	sm_root_disk d;
+	sm_root v;
+
+	::memcpy(&d, root, sizeof(d));
+	sm_root_traits::unpack(d, v);
+	return v.nr_blocks_;
+}
+
 //----------------------------------------------------------------