xen/blkfront: Make sure we don't use bounce buffers, we don't need them.

[ linux-2.6.18-xen changeset 667228bf8fc5 ]

Signed-off-by: Ian Campbell <ian.campbell@xensource.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index f2fff5799ddf..e8d3bf6f3918 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -324,6 +324,9 @@ static int xlvbd_init_blk_queue(struct gendisk *gd, u16 sector_size)
         /* Make sure buffer addresses are sector-aligned. */
         blk_queue_dma_alignment(rq, 511);
 
+        /* Make sure we don't use bounce buffers. */
+        blk_queue_bounce_limit(rq, BLK_BOUNCE_ANY);
+
         gd->queue = rq;
 
         return 0;