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block: for async O_DIRECT, mark us as polling if asked to 

Inherit the iocb IOCB_HIPRI flag, and pass on REQ_HIPRI for
those kinds of requests.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2018-11-06 14:29:11 -07:00
parent 0619317ff8
commit d34513d384
1 changed files with 3 additions and 0 deletions
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3
fs/block_dev.c
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@ -383,6 +383,9 @@ __blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter, int nr_pages)
nr_pages = iov_iter_npages(iter, BIO_MAX_PAGES);
if (!nr_pages) {
if (iocb->ki_flags & IOCB_HIPRI)
bio->bi_opf |= REQ_HIPRI;
qc = submit_bio(bio);
break;
}