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

This reverts commit f10d9f617a.

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>
alistair/sensors
Christoph Hellwig 2020-03-27 09:30:12 +01:00 committed by Jens Axboe
parent 3d745ea5b0
commit f01b411f41
1 changed files with 0 additions and 9 deletions
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block/blk-flush.c
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@ -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;