Driver should set req->state to MQ_RQ_COMPLETE after it finishes to process
req. But virtio-blk doesn't set MQ_RQ_COMPLETE after virtblk_poll() handles
req and req->state still remains MQ_RQ_IN_FLIGHT. Fortunately so far there
is no issue about it because blk_mq_end_request_batch() sets req->state to
MQ_RQ_IDLE. This patch properly sets req->state after polling I/O is finished.
Fixes: 4e0400525691 ("virtio-blk: support polling I/O")
Signed-off-by: Suwan Kim <suwan.kim027@xxxxxxxxx>
---
drivers/block/virtio_blk.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
index 19da5defd734..cf64d256787e 100644
--- a/drivers/block/virtio_blk.c
+++ b/drivers/block/virtio_blk.c
@@ -839,6 +839,7 @@ static void virtblk_complete_batch(struct io_comp_batch *iob)
rq_list_for_each(&iob->req_list, req) {
virtblk_unmap_data(req, blk_mq_rq_to_pdu(req));
virtblk_cleanup_cmd(req);
+ blk_mq_set_request_complete(req);
}
blk_mq_end_request_batch(iob);
}
--
2.26.3
