Revert "blkdev: check for valid request queue before issuing flush"

This reverts commit f10d9f617a65905c556c3b37c9b9646ae7d04ed7.

We can't have queues without a make_request_fn any more (and the
loop device uses blk-mq these days anyway..).

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 843d25683691e25ac38da206c148b9959703039d..c7f396e3d5e29638c7c94f7b225eac6536550b24 100644 (file)
--- a/block/blk-flush.c
+++ b/block/blk-flush.c
@@ -454,15 +454,6 @@ int blkdev_issue_flush(struct block_device *bdev, gfp_t gfp_mask,
        if (!q)
                return -ENXIO;
 
-       /*
-        * some block devices may not have their queue correctly set up here
-        * (e.g. loop device without a backing file) and so issuing a flush
-        * here will panic. Ensure there is a request function before issuing
-        * the flush.
-        */
-       if (!q->make_request_fn)
-               return -ENXIO;
-
        bio = bio_alloc(gfp_mask, 0);
        bio_set_dev(bio, bdev);
        bio->bi_opf = REQ_OP_WRITE | REQ_PREFLUSH;