diff --git a/[refs] b/[refs]
index d6a0f32a826c..d1bf293022ed 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 86aa5ac53e478c94ee39a15b6eadde1ed1317be3
+refs/heads/master: 821de3a27bf33f11ec878562577c586cd5f83c64
diff --git a/trunk/block/ll_rw_blk.c b/trunk/block/ll_rw_blk.c
index 5873861e1dbb..d99d402953a3 100644
--- a/trunk/block/ll_rw_blk.c
+++ b/trunk/block/ll_rw_blk.c
@@ -2558,6 +2558,7 @@ int blk_rq_map_kern(request_queue_t *q, struct request *rq, void *kbuf,
 		bio->bi_rw |= (1 << BIO_RW);
 
 	blk_rq_bio_prep(q, rq, bio);
+	blk_queue_bounce(q, &rq->bio);
 	rq->buffer = rq->data = NULL;
 	return 0;
 }