--- zzzz-none-000/linux-2.6.32.61/block/blk-merge.c	2013-06-10 09:43:48.000000000 +0000
+++ virian-300e-630/linux-2.6.32.61/block/blk-merge.c	2011-10-21 12:21:44.000000000 +0000
@@ -12,7 +12,7 @@
 static unsigned int __blk_recalc_rq_segments(struct request_queue *q,
 					     struct bio *bio)
 {
-	unsigned int phys_size;
+	unsigned int phys_size __maybe_unused__;
 	struct bio_vec *bv, *bvprv = NULL;
 	int cluster, i, high, highprv = 1;
 	unsigned int seg_size, nr_phys_segs;