diff mbox series

[PATCHv2,5/5] dm-log-writes: set dma_alignment limit in io_hints

Message ID 20221110184501.2451620-6-kbusch@meta.com (mailing list archive)
State New, archived
Headers show
Series fix direct io device mapper errors | expand

Commit Message

Keith Busch Nov. 10, 2022, 6:45 p.m. UTC 
From: Keith Busch <kbusch@kernel.org>

This device mapper needs bio vectors to be sized and memory aligned to
the logical block size. Set the minimum required queue limit
accordingly.

Signed-off-by: Keith Busch <kbusch@kernel.org>
---
 drivers/md/dm-log-writes.c | 1 +
 1 file changed, 1 insertion(+)

Comments

Mike Snitzer Nov. 16, 2022, 8:07 p.m. UTC | #1 
On Thu, Nov 10 2022 at  1:45P -0500,
Keith Busch <kbusch@meta.com> wrote:

> From: Keith Busch <kbusch@kernel.org>
> 
> This device mapper needs bio vectors to be sized and memory aligned to
> the logical block size. Set the minimum required queue limit
> accordingly.
> 
> Signed-off-by: Keith Busch <kbusch@kernel.org>

Reviewed-by: Mike Snitzer <snitzer@kernel.org>
diff mbox series

Patch

diff --git a/drivers/md/dm-log-writes.c b/drivers/md/dm-log-writes.c
index 20fd688f72e7..178e13a5b059 100644
--- a/drivers/md/dm-log-writes.c
+++ b/drivers/md/dm-log-writes.c
@@ -875,6 +875,7 @@  static void log_writes_io_hints(struct dm_target *ti, struct queue_limits *limit
 	limits->logical_block_size = bdev_logical_block_size(lc->dev->bdev);
 	limits->physical_block_size = bdev_physical_block_size(lc->dev->bdev);
 	limits->io_min = limits->physical_block_size;
+	limits->dma_alignment = limits->logical_block_size - 1;
 }
 
 #if IS_ENABLED(CONFIG_FS_DAX)