Because call bio_alloc, the bi_rw is zero by default,but in bio_add_page used the bi_rw. So evalue bi_rw. Signed-off-by: Jianpeng Ma <majianpeng@xxxxxxxxx> --- drivers/block/xen-blkback/blkback.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/block/xen-blkback/blkback.c b/drivers/block/xen-blkback/blkback.c index 73f196c..02ca290 100644 --- a/drivers/block/xen-blkback/blkback.c +++ b/drivers/block/xen-blkback/blkback.c @@ -701,6 +701,7 @@ static int dispatch_rw_block_io(struct xen_blkif *blkif, bio->bi_private = pending_req; bio->bi_end_io = end_block_io_op; bio->bi_sector = preq.sector_number; + bio->bi_rw = operation; } preq.sector_number += seg[i].nsec; -- 1.7.9.5 _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs