Expose report_bg_io_stats option in the C API. (#1131)

db/c.cc

@@ -1875,6 +1875,11 @@ void rocksdb_options_set_inplace_update_num_locks(
   opt->rep.inplace_update_num_locks = v;
 }
 
+void rocksdb_options_set_report_bg_io_stats(
+    rocksdb_options_t* opt, int v) {
+  opt->rep.report_bg_io_stats = v;
+}
+
 void rocksdb_options_set_compaction_style(rocksdb_options_t *opt, int style) {
   opt->rep.compaction_style = static_cast<rocksdb::CompactionStyle>(style);
 }

include/rocksdb/c.h

@@ -691,6 +691,8 @@ extern ROCKSDB_LIBRARY_API void rocksdb_options_set_inplace_update_support(
     rocksdb_options_t*, unsigned char);
 extern ROCKSDB_LIBRARY_API void rocksdb_options_set_inplace_update_num_locks(
     rocksdb_options_t*, size_t);
+extern ROCKSDB_LIBRARY_API void rocksdb_options_set_report_bg_io_stats(
+    rocksdb_options_t*, int);
 
 enum {
   rocksdb_no_compression = 0,