From: Jens Axboe <axboe@kernel.dk>
Date: Tue, 6 Nov 2018 21:29:11 +0000 (-0700)
Subject: block: for async O_DIRECT, mark us as polling if asked to
X-Git-Tag: v5.0-rc1~52^2~222
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=d34513d384487e8022f143a3a6b791e6d7f0dad6;p=thirdparty%2Flinux.git

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>
---

diff --git a/fs/block_dev.c b/fs/block_dev.c
index 9fe56672cfe51..e72b119ede84f 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -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;
 		}