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-rw-r--r--block/elevator.c17
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);