block: convert blkdev_issue_flush() to use empty barriers

Then we can get rid of ->issue_flush_fn() and all the driver private
implementations of that.

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

1 files changed, 0 insertions, 21 deletions

diff --git a/drivers/block/ps3disk.c b/drivers/block/ps3disk.c
index 06d0552cf49c..e354bfc070e1 100644
--- a/drivers/block/ps3disk.c
+++ b/drivers/block/ps3disk.c
@@ -414,26 +414,6 @@ static void ps3disk_prepare_flush(struct request_queue *q, struct request *req)
         req->cmd_type = REQ_TYPE_FLUSH;
 }
 
-static int ps3disk_issue_flush(struct request_queue *q, struct gendisk *gendisk,
-                               sector_t *sector)
-{
-        struct ps3_storage_device *dev = q->queuedata;
-        struct request *req;
-        int res;
-
-        dev_dbg(&dev->sbd.core, "%s:%u\n", __func__, __LINE__);
-
-        req = blk_get_request(q, WRITE, __GFP_WAIT);
-        ps3disk_prepare_flush(q, req);
-        res = blk_execute_rq(q, gendisk, req, 0);
-        if (res)
-                dev_err(&dev->sbd.core, "%s:%u: flush request failed %d\n",
-                        __func__, __LINE__, res);
-        blk_put_request(req);
-        return res;
-}
-
-
 static unsigned long ps3disk_mask;
 
 static DEFINE_MUTEX(ps3disk_mask_mutex);
@@ -506,7 +486,6 @@ static int __devinit ps3disk_probe(struct ps3_system_bus_device *_dev)
         blk_queue_dma_alignment(queue, dev->blk_size-1);
         blk_queue_hardsect_size(queue, dev->blk_size);
 
-        blk_queue_issue_flush_fn(queue, ps3disk_issue_flush);
         blk_queue_ordered(queue, QUEUE_ORDERED_DRAIN_FLUSH,
                           ps3disk_prepare_flush);