blk-mq: divert __blk_put_request for MQ ops

__blk_put_request needs to call into the blk-mq code just like
blk_put_request.  As we don't have the queue lock in this case both
end up calling the same function.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/block/blk-core.c b/block/blk-core.c
index c00e0bdeab4a..06636f3ad424 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1278,6 +1278,11 @@ void __blk_put_request(struct request_queue *q, struct request *req)
         if (unlikely(!q))
                 return;
 
+        if (q->mq_ops) {
+                blk_mq_free_request(req);
+                return;
+        }
+
         blk_pm_put_request(req);
 
         elv_completed_request(q, req);