From cb4787a32889df5470eb57033e38baf7c1fca000 Mon Sep 17 00:00:00 2001
From: David Smith <dsmith@redhat.com>
Date: Thu, 26 Sep 2013 16:48:31 -0500
Subject: [PATCH] Make systemtap.examples/io/deviceseeks.stp work on older
 kernels.

* testsuite/systemtap.examples/io/deviceseeks.stp: Handle older kernel's
  names for the sector size field.
---
 testsuite/systemtap.examples/io/deviceseeks.stp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/testsuite/systemtap.examples/io/deviceseeks.stp b/testsuite/systemtap.examples/io/deviceseeks.stp
index 1503fafdf..8801ecfff 100755
--- a/testsuite/systemtap.examples/io/deviceseeks.stp
+++ b/testsuite/systemtap.examples/io/deviceseeks.stp
@@ -14,7 +14,10 @@ global seeks, oldsec
 
 probe ioblock_trace.request {
   if (size == 0) next
-  sectorsize = $q->limits->logical_block_size
+  sectorsize = (@defined($q->limits->logical_block_size)
+		? $q->limits->logical_block_size
+		: (@defined($q->logical_block_size) ? $q->logical_block_size
+		   : $q->hardsect_size))
   # printf("%s %s\n", devname, rw ? "w" : "r")
   sec = sector
   seeks[devname] <<< sec - oldsec[devname]
-- 
2.43.5