On Thu, 09 Feb 2023 11:19:30 +0800, Xiao Ni wrote: > It checks if plug->cached_rq is empty before merging bio. But the merge action > doesn't have relationship with plug->cached_rq, it trys to merge bio with > requests within plug->mq_list. Now it checks if ->cached_rq is empty before > merging bio. If it's empty, it will miss the merge chances. So move the merge > function before checking ->cached_rq. > > > [...] Applied, thanks! [1/1] block: Merge bio before checking ->cached_rq commit: 23f3e3272e7a4d9fb870485cd6df1e4f9539282c Best regards, -- Jens Axboe