block: convert blkdev_issue_flush() to use empty barriers
authorJens Axboe <jens.axboe@oracle.com>
Tue, 16 Oct 2007 09:05:02 +0000 (11:05 +0200)
committerJens Axboe <jens.axboe@oracle.com>
Tue, 16 Oct 2007 09:05:02 +0000 (11:05 +0200)
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>

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