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block: use REQ_FLUSH in blkdev_issue_flush()

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Update blkdev_issue_flush() to use new REQ_FLUSH interface.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
This commit is contained in:
Tejun Heo 2010-09-03 11:56:17 +02:00 committed by Jens Axboe
parent 04ccc65cd1
commit d391a2dda2
1 changed files with 6 additions and 11 deletions
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17
block/blk-flush.c
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@ -191,13 +191,10 @@ struct request *blk_do_flush(struct request_queue *q, struct request *rq)
return blk_flush_complete_seq(q, skip, 0);
}
static void bio_end_empty_barrier(struct bio *bio, int err)
static void bio_end_flush(struct bio *bio, int err)
{
if (err) {
if (err == -EOPNOTSUPP)
set_bit(BIO_EOPNOTSUPP, &bio->bi_flags);
if (err)
clear_bit(BIO_UPTODATE, &bio->bi_flags);
}
if (bio->bi_private)
complete(bio->bi_private);
bio_put(bio);
@ -235,19 +232,19 @@ int blkdev_issue_flush(struct block_device *bdev, gfp_t gfp_mask,
* 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 barrier.
* the flush.
*/
if (!q->make_request_fn)
return -ENXIO;
bio = bio_alloc(gfp_mask, 0);
bio->bi_end_io = bio_end_empty_barrier;
bio->bi_end_io = bio_end_flush;
bio->bi_bdev = bdev;
if (test_bit(BLKDEV_WAIT, &flags))
bio->bi_private = &wait;
bio_get(bio);
submit_bio(WRITE_BARRIER, bio);
submit_bio(WRITE_FLUSH, bio);
if (test_bit(BLKDEV_WAIT, &flags)) {
wait_for_completion(&wait);
/*
@ -259,9 +256,7 @@ int blkdev_issue_flush(struct block_device *bdev, gfp_t gfp_mask,
*error_sector = bio->bi_sector;
}
if (bio_flagged(bio, BIO_EOPNOTSUPP))
ret = -EOPNOTSUPP;
else if (!bio_flagged(bio, BIO_UPTODATE))
if (!bio_flagged(bio, BIO_UPTODATE))
ret = -EIO;
bio_put(bio);