block: kill off q->flush_flags

Now that we converted everything to the newer block write cache
interface, kill off the queue flush_flags and queueable flush
entries.

Signed-off-by: Jens Axboe <axboe@fb.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c
index 26aa080e243c..3355f1cdd4e5 100644
--- a/drivers/block/xen-blkback/xenbus.c
+++ b/drivers/block/xen-blkback/xenbus.c
@@ -477,7 +477,7 @@ static int xen_vbd_create(struct xen_blkif *blkif, blkif_vdev_t handle,
                 vbd->type |= VDISK_REMOVABLE;
 
         q = bdev_get_queue(bdev);
-        if (q && q->flush_flags)
+        if (q && test_bit(QUEUE_FLAG_WC, &q->queue_flags))
                 vbd->flush_support = true;
 
         if (q && blk_queue_secdiscard(q))