block: Add interface to abort queued requests
Signed-off-by: Mike Anderson <andmike@linux.vnet.ibm.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/block/elevator.c b/block/elevator.c
index a91fc59..8a74eed 100644
--- a/block/elevator.c
+++ b/block/elevator.c
@@ -914,6 +914,19 @@
return ELV_MQUEUE_MAY;
}
+void elv_abort_queue(struct request_queue *q)
+{
+ struct request *rq;
+
+ while (!list_empty(&q->queue_head)) {
+ rq = list_entry_rq(q->queue_head.next);
+ rq->cmd_flags |= REQ_QUIET;
+ blk_add_trace_rq(q, rq, BLK_TA_ABORT);
+ end_queued_request(rq, 0);
+ }
+}
+EXPORT_SYMBOL(elv_abort_queue);
+
void elv_completed_request(struct request_queue *q, struct request *rq)
{
elevator_t *e = q->elevator;
