blk-mq: End unstarted requests on a dying queue
Requests that haven't been started prior to a queue dying can be ended
in error without waiting for them to start and time out.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Added code comment to explain why this is done.
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/block/blk-mq.c b/block/blk-mq.c
index 78324a2..2f95747 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -625,8 +625,17 @@
{
struct blk_mq_timeout_data *data = priv;
- if (!test_bit(REQ_ATOM_STARTED, &rq->atomic_flags))
+ if (!test_bit(REQ_ATOM_STARTED, &rq->atomic_flags)) {
+ /*
+ * If a request wasn't started before the queue was
+ * marked dying, kill it here or it'll go unnoticed.
+ */
+ if (unlikely(blk_queue_dying(rq->q))) {
+ rq->errors = -EIO;
+ blk_mq_complete_request(rq);
+ }
return;
+ }
if (rq->cmd_flags & REQ_NO_TIMEOUT)
return;
