From f9596695bee6a88d17118ee9f2f826f96b826644 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 19 Jul 2016 11:31:49 +0200 Subject: [PATCH] virtio_blk: use blk_rq_map_kern Similar to how SCSI and NVMe prepare passthrough requests. This avoids poking into request internals too much. Signed-off-by: Christoph Hellwig Signed-off-by: Jens Axboe --- drivers/block/virtio_blk.c | 22 ++++++++++------------ 1 file changed, 10 insertions(+), 12 deletions(-) diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index 5fd2e0ac2711..a85a14355efa 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -236,25 +236,23 @@ static int virtio_queue_rq(struct blk_mq_hw_ctx *hctx, static int virtblk_get_id(struct gendisk *disk, char *id_str) { struct virtio_blk *vblk = disk->private_data; + struct request_queue *q = vblk->disk->queue; struct request *req; - struct bio *bio; int err; - bio = bio_map_kern(vblk->disk->queue, id_str, VIRTIO_BLK_ID_BYTES, - GFP_KERNEL); - if (IS_ERR(bio)) - return PTR_ERR(bio); - - req = blk_make_request(vblk->disk->queue, bio, GFP_KERNEL); - if (IS_ERR(req)) { - bio_put(bio); + req = blk_get_request(q, READ, GFP_KERNEL); + if (IS_ERR(req)) return PTR_ERR(req); - } - + blk_rq_set_block_pc(req); req->cmd_type = REQ_TYPE_DRV_PRIV; + + err = blk_rq_map_kern(q, req, id_str, VIRTIO_BLK_ID_BYTES, GFP_KERNEL); + if (err) + goto out; + err = blk_execute_rq(vblk->disk->queue, vblk->disk, req, false); +out: blk_put_request(req); - return err; } -- 2.39.2