From 5d4ce78b254cde8aaeb829420c3f15d3606ad411 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Thu, 24 Sep 2020 08:51:30 +0200 Subject: [PATCH] bcache: inherit the optimal I/O size 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 Reviewed-by: Jan Kara Reviewed-by: Martin K. Petersen Acked-by: Coly Li Signed-off-by: Jens Axboe --- 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 1bbdc41..4811300 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; -- 2.7.4