On Tue, Jan 18, 2022 at 05:17:44PM +0800, GuoYong Zheng wrote: > After commit 47c122e35d7e ("block: pre-allocate requests if plug is > started and is a batch"), block layer can make smarter request allocation > if it know how many requests it need to submit, so switch to use > blk_start_plug_nr_ios here to pass the number of requests we will submit. Looks good: Reviewed-by: Christoph Hellwig <hch@xxxxxx>