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, 24 deletions

diff --git a/drivers/message/i2o/i2o_block.c b/drivers/message/i2o/i2o_block.c
index 50b2c733441..d602ba6d541 100644
--- a/drivers/message/i2o/i2o_block.c
+++ b/drivers/message/i2o/i2o_block.c
@@ -149,29 +149,6 @@ static int i2o_block_device_flush(struct i2o_device *dev)
 };
 
 /**
- *	i2o_block_issue_flush - device-flush interface for block-layer
- *	@queue: the request queue of the device which should be flushed
- *	@disk: gendisk
- *	@error_sector: error offset
- *
- *	Helper function to provide flush functionality to block-layer.
- *
- *	Returns 0 on success or negative error code on failure.
- */
-
-static int i2o_block_issue_flush(struct request_queue * queue, struct gendisk *disk,
-				 sector_t * error_sector)
-{
-	struct i2o_block_device *i2o_blk_dev = queue->queuedata;
-	int rc = -ENODEV;
-
-	if (likely(i2o_blk_dev))
-		rc = i2o_block_device_flush(i2o_blk_dev->i2o_dev);
-
-	return rc;
-}
-
-/**
  *	i2o_block_device_mount - Mount (load) the media of device dev
  *	@dev: I2O device which should receive the mount request
  *	@media_id: Media Identifier
@@ -1009,7 +986,6 @@ static struct i2o_block_device *i2o_block_device_alloc(void)
 	}
 
 	blk_queue_prep_rq(queue, i2o_block_prep_req_fn);
-	blk_queue_issue_flush_fn(queue, i2o_block_issue_flush);
 
 	gd->major = I2O_MAJOR;
 	gd->queue = queue;