Commit 842e39b0 authored by Pavel Begunkov's avatar Pavel Begunkov Committed by Jens Axboe
Browse files

block: add async version of bio_set_polled 



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: default avatarPavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/8fa137885164a5d05fadcff4c3521da8d5a83d00.1635337135.git.asml.silence@gmail.com


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent e71aa913

block/fops.c

+3 −4
Original line number Diff line number Diff line
@@ -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;