Inherit the optimal I/O size setting just like the readahead window, as any reason to do larger I/O does not apply to just readahead. Signed-off-by: Christoph Hellwig <hch@xxxxxx> --- drivers/md/bcache/super.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c index 1bbdc410ee3c51..48113005ed86ad 100644 --- a/drivers/md/bcache/super.c +++ b/drivers/md/bcache/super.c @@ -1430,6 +1430,8 @@ static int cached_dev_init(struct cached_dev *dc, unsigned int block_size) dc->disk.disk->queue->backing_dev_info->ra_pages = max(dc->disk.disk->queue->backing_dev_info->ra_pages, q->backing_dev_info->ra_pages); + blk_queue_io_opt(dc->disk.disk->queue, + max(queue_io_opt(dc->disk.disk->queue), queue_io_opt(q))); atomic_set(&dc->io_errors, 0); dc->io_disable = false; -- 2.28.0
