s390/dasd: fix hanging blockdevice after request requeue
commitd8898ee50e
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:e443343e50
("s390/dasd: blk-mq conversion") CC: stable@vger.kernel.org # 4.14+ Signed-off-by: Stefan Haberland <sth@linux.ibm.com> Reviewed-by: Jan Hoeppner <hoeppner@linux.ibm.com> Reviewed-by: Halil Pasic <pasic@linux.ibm.com> Link: https://lore.kernel.org/r/20230405142017.2446986-8-sth@linux.ibm.com Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -2941,7 +2941,7 @@ static int _dasd_requeue_request(struct dasd_ccw_req *cqr)
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return 0;
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spin_lock_irq(&cqr->dq->lock);
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req = (struct request *) cqr->callback_data;
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blk_mq_requeue_request(req, false);
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blk_mq_requeue_request(req, true);
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spin_unlock_irq(&cqr->dq->lock);
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return 0;
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