From: Stefano Garzarella <sgarzare@redhat.com>
Date: Fri, 11 Feb 2022 10:01:36 +0100
Subject: [PATCH] block: clear iocb->private in blkdev_bio_end_io_async()
Git-commit: bb49c6fa8b845591b317b0d7afea4ae60ec7f3aa
Patch-mainline: v5.17-rc6
References: jsc#PED-1183
iocb_bio_iopoll() expects iocb->private to be cleared before
releasing the bio.
We already do this in blkdev_bio_end_io(), but we forgot in the
recently added blkdev_bio_end_io_async().
Fixes: 54a88eb838d3 ("block: add single bio async direct IO helper")
Cc: asml.silence@gmail.com
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20220211090136.44471-1-sgarzare@redhat.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Hannes Reinecke <hare@suse.com>
---
block/fops.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/block/fops.c b/block/fops.c
index 4f59e0f5bf30..a18e7fbd97b8 100644
--- a/block/fops.c
+++ b/block/fops.c
@@ -289,6 +289,8 @@ static void blkdev_bio_end_io_async(struct bio *bio)
struct kiocb *iocb = dio->iocb;
ssize_t ret;
+ WRITE_ONCE(iocb->private, NULL);
+
if (likely(!bio->bi_status)) {
ret = dio->size;
iocb->ki_pos += ret;
--
2.35.3