From: Stefan Haberland <sth@xxxxxxxxxxxxx>
commit d8898ee50edecacdf0141f26fd90acf43d7e9cd7 upstream.
The DASD driver does not kick the requeue list when requeuing IO requests
to the blocklayer. This might lead to hanging blockdevice when there is
no other trigger for this.
Fix by automatically kick the requeue list when requeuing DASD requests
to the blocklayer.
Fixes: e443343e509a ("s390/dasd: blk-mq conversion")
CC: stable@xxxxxxxxxxxxxxx # 4.14+
Signed-off-by: Stefan Haberland <sth@xxxxxxxxxxxxx>
Reviewed-by: Jan Hoeppner <hoeppner@xxxxxxxxxxxxx>
Reviewed-by: Halil Pasic <pasic@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20230405142017.2446986-8-sth@xxxxxxxxxxxxx
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/s390/block/dasd.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -3000,7 +3000,7 @@ static int _dasd_requeue_request(struct
return 0;
spin_lock_irq(&cqr->dq->lock);
req = (struct request *) cqr->callback_data;
- blk_mq_requeue_request(req, false);
+ blk_mq_requeue_request(req, true);
spin_unlock_irq(&cqr->dq->lock);
return 0;
