diff mbox series

[03/13] bcache: inherit the optimal I/O size

Message ID 20200924065140.726436-4-hch@lst.de (mailing list archive)
State New, archived
Headers show
Series [01/13] fs: remove the unused SB_I_MULTIROOT flag | expand

Commit Message

Christoph Hellwig Sept. 24, 2020, 6:51 a.m. UTC 
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@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Acked-by: Coly Li <colyli@suse.de>
---
 drivers/md/bcache/super.c | 2 ++
 1 file changed, 2 insertions(+)

Comments

Martin K. Petersen Sept. 24, 2020, 3:49 p.m. UTC | #1 
Christoph,

> 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.

Looks fine.

Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
diff mbox series

Patch

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;