[dm-devel] [PATCHv2 5/5] dm-log-writes: set dma_alignment limit in io_hints
Keith Busch
kbusch at meta.com
Thu Nov 10 18:45:01 UTC 2022
From: Keith Busch <kbusch at 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 at kernel.org>
---
drivers/md/dm-log-writes.c | 1 +
1 file changed, 1 insertion(+)
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)
--
2.30.2
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