On 2020/9/21 16:07, Christoph Hellwig wrote: > 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> Acked-by: Coly Li <colyli@xxxxxxx> Thanks. Coly Li > --- > 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; >
