blk_get_request is used for BLOCK_PC and similar passthrough requests.
Currently we always need to call blk_rq_set_block_pc or an open coded
version of it to allow appending bios using the request mapping helpers
later on, which is a somewhat awkward API. Instead move the
initialization part of blk_rq_set_block_pc into blk_get_request, so that
we always have a safe to use request.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
spin_lock_irq(q->queue_lock);
rq = get_request(q, rw, 0, NULL, gfp_mask);
spin_lock_irq(q->queue_lock);
rq = get_request(q, rw, 0, NULL, gfp_mask);
spin_unlock_irq(q->queue_lock);
spin_unlock_irq(q->queue_lock);
- /* q->queue_lock is unlocked at this point */
+ /* q->queue_lock is unlocked at this point */
+ rq->__data_len = 0;
+ rq->__sector = (sector_t) -1;
+ rq->bio = rq->biotail = NULL;
void blk_rq_set_block_pc(struct request *rq)
{
rq->cmd_type = REQ_TYPE_BLOCK_PC;
void blk_rq_set_block_pc(struct request *rq)
{
rq->cmd_type = REQ_TYPE_BLOCK_PC;
- rq->__data_len = 0;
- rq->__sector = (sector_t) -1;
- rq->bio = rq->biotail = NULL;
memset(rq->__cmd, 0, sizeof(rq->__cmd));
}
EXPORT_SYMBOL(blk_rq_set_block_pc);
memset(rq->__cmd, 0, sizeof(rq->__cmd));
}
EXPORT_SYMBOL(blk_rq_set_block_pc);
blk_queue_exit(q);
return ERR_PTR(-EWOULDBLOCK);
}
blk_queue_exit(q);
return ERR_PTR(-EWOULDBLOCK);
}
+
+ rq->__data_len = 0;
+ rq->__sector = (sector_t) -1;
+ rq->bio = rq->biotail = NULL;
return rq;
}
EXPORT_SYMBOL(blk_mq_alloc_request);
return rq;
}
EXPORT_SYMBOL(blk_mq_alloc_request);
req = blk_get_request(q, READ, GFP_KERNEL);
if (IS_ERR(req))
return PTR_ERR(req);
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);
req->cmd_type = REQ_TYPE_DRV_PRIV;
err = blk_rq_map_kern(q, req, id_str, VIRTIO_BLK_ID_BYTES, GFP_KERNEL);
req->cmd_type = REQ_TYPE_DRV_PRIV;
req->cmd_flags |= REQ_FAILFAST_DRIVER;
req->cmd_type = REQ_TYPE_DRV_PRIV;
req->cmd_flags |= REQ_FAILFAST_DRIVER;
- req->__data_len = 0;
- req->__sector = (sector_t) -1;
- req->bio = req->biotail = NULL;
-
req->cmd = (unsigned char *)cmd;
req->cmd_len = sizeof(struct nvme_command);
req->cmd = (unsigned char *)cmd;
req->cmd_len = sizeof(struct nvme_command);