diff options
Diffstat (limited to 'block/elevator.c')
| -rw-r--r-- | block/elevator.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/block/elevator.c b/block/elevator.c index b9c518afe1f8..952aee04a68a 100644 --- a/block/elevator.c +++ b/block/elevator.c @@ -712,6 +712,14 @@ struct request *elv_next_request(struct request_queue *q) int ret; while ((rq = __elv_next_request(q)) != NULL) { + /* + * Kill the empty barrier place holder, the driver must + * not ever see it. + */ + if (blk_empty_barrier(rq)) { + end_queued_request(rq, 1); + continue; + } if (!(rq->cmd_flags & REQ_STARTED)) { /* * This is the first time the device driver @@ -751,15 +759,8 @@ struct request *elv_next_request(struct request_queue *q) rq = NULL; break; } else if (ret == BLKPREP_KILL) { - int nr_bytes = rq->hard_nr_sectors << 9; - - if (!nr_bytes) - nr_bytes = rq->data_len; - - blkdev_dequeue_request(rq); rq->cmd_flags |= REQ_QUIET; - end_that_request_chunk(rq, 0, nr_bytes); - end_that_request_last(rq, 0); + end_queued_request(rq, 0); } else { printk(KERN_ERR "%s: bad return=%d\n", __FUNCTION__, ret); |