[dm-devel] [PATCHv2 4/5] dm-integrity: set dma_alignment limit in io_hints

2022-11-10 Thread Keith Busch
From: Keith Busch 

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 
---
 drivers/md/dm-integrity.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c
index aaf2472df6e5..e1e7b205573f 100644
--- a/drivers/md/dm-integrity.c
+++ b/drivers/md/dm-integrity.c
@@ -3370,6 +3370,7 @@ static void dm_integrity_io_hints(struct dm_target *ti, 
struct queue_limits *lim
limits->logical_block_size = ic->sectors_per_block << 
SECTOR_SHIFT;
limits->physical_block_size = ic->sectors_per_block << 
SECTOR_SHIFT;
blk_limits_io_min(limits, ic->sectors_per_block << 
SECTOR_SHIFT);
+   limits->dma_alignment = limits->logical_block_size - 1;
}
 }
 
-- 
2.30.2

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Re: [dm-devel] [PATCHv2 4/5] dm-integrity: set dma_alignment limit in io_hints

2022-11-16 Thread Mike Snitzer
On Thu, Nov 10 2022 at  1:45P -0500,
Keith Busch  wrote:

> From: Keith Busch 
> 
> 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 

Reviewed-by: Mike Snitzer 

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