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-rw-r--r--block/blk-merge.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/block/blk-merge.c b/block/blk-merge.c
index 5a244f05360f..e39cb24b7679 100644
--- a/block/blk-merge.c
+++ b/block/blk-merge.c
@@ -403,6 +403,8 @@ static int attempt_merge(struct request_queue *q, struct request *req,
 	if (blk_rq_cpu_valid(next))
 		req->cpu = next->cpu;
 
+	/* owner-ship of bio passed from next to req */
+	next->bio = NULL;
 	__blk_put_request(q, next);
 	return 1;
 }