[PATCH 04/26] block: use REQ_HIPRI_ASYNC for non-sync polled IO
From: Jens Axboe <axboe@kernel.dk>
Date: 2018-12-13 17:56:59
Also in:
linux-fsdevel
Subsystem:
filesystems (vfs and infrastructure), the rest · Maintainers:
Alexander Viro, Christian Brauner, Linus Torvalds
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 <axboe@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