2 files changed, 13 insertions, 16 deletions

diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c
index de42458195bc..a97f2bf5b01b 100644
--- a/drivers/block/xen-blkback/blkback.c
+++ b/drivers/block/xen-blkback/blkback.c
@@ -970,7 +970,6 @@ static int dispatch_discard_io(struct xen_blkif_ring *ring,
 	int status = BLKIF_RSP_OKAY;
 	struct xen_blkif *blkif = ring->blkif;
 	struct block_device *bdev = blkif->vbd.bdev;
-	unsigned long secure;
 	struct phys_req preq;
 
 	xen_blkif_get(blkif);
@@ -987,13 +986,15 @@ static int dispatch_discard_io(struct xen_blkif_ring *ring,
 	}
 	ring->st_ds_req++;
 
-	secure = (blkif->vbd.discard_secure &&
-		 (req->u.discard.flag & BLKIF_DISCARD_SECURE)) ?
-		 BLKDEV_DISCARD_SECURE : 0;
+	if (blkif->vbd.discard_secure &&
+	    (req->u.discard.flag & BLKIF_DISCARD_SECURE))
+		err = blkdev_issue_secure_erase(bdev,
+				req->u.discard.sector_number,
+				req->u.discard.nr_sectors, GFP_KERNEL);
+	else
+		err = blkdev_issue_discard(bdev, req->u.discard.sector_number,
+				req->u.discard.nr_sectors, GFP_KERNEL);
 
-	err = blkdev_issue_discard(bdev, req->u.discard.sector_number,
-				   req->u.discard.nr_sectors,
-				   GFP_KERNEL, secure);
 fail_response:
 	if (err == -EOPNOTSUPP) {
 		pr_debug("discard op failed, not supported\n");
diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c
index f09040435e2e..97de13b14175 100644
--- a/drivers/block/xen-blkback/xenbus.c
+++ b/drivers/block/xen-blkback/xenbus.c
@@ -484,7 +484,6 @@ static int xen_vbd_create(struct xen_blkif *blkif, blkif_vdev_t handle,
 {
 	struct xen_vbd *vbd;
 	struct block_device *bdev;
-	struct request_queue *q;
 
 	vbd = &blkif->vbd;
 	vbd->handle   = handle;
@@ -516,11 +515,9 @@ static int xen_vbd_create(struct xen_blkif *blkif, blkif_vdev_t handle,
 	if (vbd->bdev->bd_disk->flags & GENHD_FL_REMOVABLE)
 		vbd->type |= VDISK_REMOVABLE;
 
-	q = bdev_get_queue(bdev);
-	if (q && test_bit(QUEUE_FLAG_WC, &q->queue_flags))
+	if (bdev_write_cache(bdev))
 		vbd->flush_support = true;
-
-	if (q && blk_queue_secure_erase(q))
+	if (bdev_max_secure_erase_sectors(bdev))
 		vbd->discard_secure = true;
 
 	vbd->feature_gnt_persistent = feature_persistent;
@@ -578,22 +575,21 @@ static void xen_blkbk_discard(struct xenbus_transaction xbt, struct backend_info
 	int err;
 	int state = 0;
 	struct block_device *bdev = be->blkif->vbd.bdev;
-	struct request_queue *q = bdev_get_queue(bdev);
 
 	if (!xenbus_read_unsigned(dev->nodename, "discard-enable", 1))
 		return;
 
-	if (blk_queue_discard(q)) {
+	if (bdev_max_discard_sectors(bdev)) {
 		err = xenbus_printf(xbt, dev->nodename,
 			"discard-granularity", "%u",
-			q->limits.discard_granularity);
+			bdev_discard_granularity(bdev));
 		if (err) {
 			dev_warn(&dev->dev, "writing discard-granularity (%d)", err);
 			return;
 		}
 		err = xenbus_printf(xbt, dev->nodename,
 			"discard-alignment", "%u",
-			q->limits.discard_alignment);
+			bdev_discard_alignment(bdev));
 		if (err) {
 			dev_warn(&dev->dev, "writing discard-alignment (%d)", err);
 			return;