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>

1 files changed, 22 insertions, 0 deletions

diff --git a/block/blk-timeout.c b/block/blk-timeout.c
index b36d07bf0afb..6e5c781c5af1 100644
--- a/block/blk-timeout.c
+++ b/block/blk-timeout.c
@@ -153,3 +153,25 @@ void blk_add_timer(struct request *req)
             time_before(expiry, q->timeout.expires))
                 mod_timer(&q->timeout, expiry);
 }
+
+/**
+ * blk_abort_queue -- Abort all request on given queue
+ * @queue:      pointer to queue
+ *
+ */
+void blk_abort_queue(struct request_queue *q)
+{
+        unsigned long flags;
+        struct request *rq, *tmp;
+
+        spin_lock_irqsave(q->queue_lock, flags);
+
+        elv_abort_queue(q);
+
+        list_for_each_entry_safe(rq, tmp, &q->timeout_list, timeout_list)
+                blk_abort_request(rq);
+
+        spin_unlock_irqrestore(q->queue_lock, flags);
+
+}
+EXPORT_SYMBOL_GPL(blk_abort_queue);