From: Chengming Zhou <zhouchengming@bytedance.com>

After global search, I found "completion_data" in struct request
is not used anywhere, so just clean it up by the way.

Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---
 include/linux/blk-mq.h | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index f401067ac03a..0a1c404e6c7a 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -158,13 +158,11 @@ struct request {
 
 	/*
 	 * The rb_node is only used inside the io scheduler, requests
-	 * are pruned when moved to the dispatch queue. So let the
-	 * completion_data share space with the rb_node.
+	 * are pruned when moved to the dispatch queue.
 	 */
 	union {
 		struct rb_node rb_node;	/* sort/lookup */
 		struct bio_vec special_vec;
-		void *completion_data;
 	};
 
 	/*
-- 
2.41.0

On Fri, Jul 07, 2023 at 05:37:19PM +0800, chengming.zhou@linux.dev wrote:
> From: Chengming Zhou <zhouchengming@bytedance.com>
> 
> After global search, I found "completion_data" in struct request
> is not used anywhere, so just clean it up by the way.
> 
> Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
> Reviewed-by: Christoph Hellwig <hch@lst.de>

Reviewed-by: Ming Lei <ming.lei@redhat.com>

Thanks,
Ming