rq->rq_disk and bio->bi_bdev->bd_disk may differ if a request has passed through remapping drivers. FSEQ_DATA request incorrectly followed bio->bi_bdev->bd_disk ending up being issued w/ mismatching rq_disk. Make it follow orig_rq->rq_disk. Signed-off-by: Tejun Heo <tj@xxxxxxxxxx> Reported-by: Kiyoshi Ueda <k-ueda@xxxxxxxxxxxxx> Tested-by: Kiyoshi Ueda <k-ueda@xxxxxxxxxxxxx> --- block/blk-flush.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/block/blk-flush.c b/block/blk-flush.c index cb4c844..7d1fc98 100644 --- a/block/blk-flush.c +++ b/block/blk-flush.c @@ -111,6 +111,13 @@ static struct request *queue_next_fseq(struct request_queue *q) break; case QUEUE_FSEQ_DATA: init_request_from_bio(rq, orig_rq->bio); + /* + * orig_rq->rq_disk may be different from + * bio->bi_bdev->bd_disk if orig_rq got here through + * remapping drivers. Make sure rq->rq_disk points + * to the same one as orig_rq. + */ + rq->rq_disk = orig_rq->rq_disk; rq->cmd_flags &= ~(REQ_FLUSH | REQ_FUA); rq->cmd_flags |= orig_rq->cmd_flags & (REQ_FLUSH | REQ_FUA); rq->end_io = flush_data_end_io; -- 1.7.1 -- dm-devel mailing list dm-devel@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/dm-devel
