[PATCH 04/26] block: use REQ_HIPRI_ASYNC for non-sync polled IO

[Jens Axboe]

Tell the block layer if it's a sync or async polled request, so it can
do the right thing.

Signed-off-by: Jens Axboe <ax...@kernel.dk>
---
 fs/block_dev.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/fs/block_dev.c b/fs/block_dev.c
index 6de8d35f6e41..b8f574615792 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -402,8 +402,12 @@ __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;
+                       if (iocb->ki_flags & IOCB_HIPRI) {
+                               if (!is_sync)
+                                       bio->bi_opf |= REQ_HIPRI_ASYNC;
+                               else
+                                       bio->bi_opf |= REQ_HIPRI;
+                       }
 
                        qc = submit_bio(bio);
                        WRITE_ONCE(iocb->ki_cookie, qc);
-- 
2.17.1