blk-mq: Export if requests were started
Drivers can iterate over all allocated request tags, but their callback
needs a way to know if the driver started the request in the first place.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/block/blk-mq.c b/block/blk-mq.c
index aefed96..ce48116 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -404,6 +404,12 @@
}
EXPORT_SYMBOL(blk_mq_complete_request);
+int blk_mq_request_started(struct request *rq)
+{
+ return test_bit(REQ_ATOM_STARTED, &rq->atomic_flags);
+}
+EXPORT_SYMBOL_GPL(blk_mq_request_started);
+
void blk_mq_start_request(struct request *rq)
{
struct request_queue *q = rq->q;