--- tapset/ioblock.stp-dist	2008-12-04 18:02:22.000000000 +0100
+++ tapset/ioblock.stp	2008-12-04 18:03:54.000000000 +0100
@@ -122,7 +122,9 @@
         vcnt = $bio->bi_vcnt
         idx = $bio->bi_idx
         phys_segments = $bio->bi_phys_segments
+%(kernel_v < "2.6.27" %?
         hw_segments = $bio->bi_hw_segments
+%)
         size = $bio->bi_size
 
         bdev = $bio->bi_bdev
@@ -176,6 +178,8 @@
         vcnt = $bio->bi_vcnt
         idx = $bio->bi_idx
         phys_segments = $bio->bi_phys_segments
+%(kernel_v < "2.6.27" %?
         hw_segments = $bio->bi_hw_segments
+%)
         size = $bio->bi_size
 }