block: remove the disk and queue NULL checks in blkdev_issue_flush

Both of these never can be NULL for a live block device.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/block/blk-flush.c b/block/blk-flush.c
index d47a579..15ae015 100644 (file)
--- a/block/blk-flush.c
+++ b/block/blk-flush.c
@@ -438,17 +438,9 @@ void blk_insert_flush(struct request *rq)
  */
 int blkdev_issue_flush(struct block_device *bdev, gfp_t gfp_mask)
 {
-       struct request_queue *q;
        struct bio *bio;
        int ret = 0;
 
-       if (bdev->bd_disk == NULL)
-               return -ENXIO;
-
-       q = bdev_get_queue(bdev);
-       if (!q)
-               return -ENXIO;
-
        bio = bio_alloc(gfp_mask, 0);
        bio_set_dev(bio, bdev);
        bio->bi_opf = REQ_OP_WRITE | REQ_PREFLUSH;