- /*
- * Hooray string manipulation, count is the size written NOT
- * INCLUDING THE \0, so size is now count+1 less than what we
- * had before, but we want to start writing the next bit from
- * the \0 so we only add count to buf.
- */
- off += scnprintf(buf+off, size-off, "%s ", dname);
+ do {
+ seq = u64_stats_fetch_begin(&bis->sync);
+
+ rbytes = bis->cur.bytes[BLKG_IOSTAT_READ];
+ wbytes = bis->cur.bytes[BLKG_IOSTAT_WRITE];
+ dbytes = bis->cur.bytes[BLKG_IOSTAT_DISCARD];
+ rios = bis->cur.ios[BLKG_IOSTAT_READ];
+ wios = bis->cur.ios[BLKG_IOSTAT_WRITE];
+ dios = bis->cur.ios[BLKG_IOSTAT_DISCARD];
+ } while (u64_stats_fetch_retry(&bis->sync, seq));
+
+ if (rbytes || wbytes || rios || wios) {
+ has_stats = true;
+ seq_printf(s, "rbytes=%llu wbytes=%llu rios=%llu wios=%llu dbytes=%llu dios=%llu",
+ rbytes, wbytes, rios, wios,
+ dbytes, dios);
+ }