From: Pavel Begunkov <asml.silence@gmail.com>
Date: Wed, 27 Oct 2021 13:21:10 +0100
Subject: [PATCH] block: add async version of bio_set_polled
Git-commit: 842e39b013465a279fb60348427b9309427a29de
Patch-mainline: v5.16-rc1
References: jsc#PED-1183
If we know that a iocb is async we can optimise bio_set_polled() a bit,
add a new helper bio_set_polled_async().
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/8fa137885164a5d05fadcff4c3521da8d5a83d00.1635337135.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Hannes Reinecke <hare@suse.com>
---
block/fops.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/block/fops.c b/block/fops.c
index 8594852bd344..a2f492e50782 100644
--- a/block/fops.c
+++ b/block/fops.c
@@ -358,14 +358,13 @@ static ssize_t __blkdev_direct_IO_async(struct kiocb *iocb,
task_io_account_write(bio->bi_iter.bi_size);
}
- if (iocb->ki_flags & IOCB_NOWAIT)
- bio->bi_opf |= REQ_NOWAIT;
-
if (iocb->ki_flags & IOCB_HIPRI) {
- bio_set_polled(bio, iocb);
+ bio->bi_opf |= REQ_POLLED | REQ_NOWAIT;
submit_bio(bio);
WRITE_ONCE(iocb->private, bio);
} else {
+ if (iocb->ki_flags & IOCB_NOWAIT)
+ bio->bi_opf |= REQ_NOWAIT;
submit_bio(bio);
}
return -EIOCBQUEUED;
--
2.35.3