* [PATCH] dm-integrity: set discard_granularity to logical block size
@ 2024-05-20 14:48 Mikulas Patocka
2024-05-20 15:02 ` Christoph Hellwig
0 siblings, 1 reply; 2+ messages in thread
From: Mikulas Patocka @ 2024-05-20 14:48 UTC (permalink / raw
To: Eric Wheeler, Mike Snitzer; +Cc: Milan Broz, dm-devel, linux-integrity
dm-integrity could set discard_granularity lower than the logical block
size. This could result in failures when sending discard requests to
dm-integrity. This patch fixes discard_granularity.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Reported-by: Eric Wheeler <linux-integrity@lists.ewheeler.net>
Cc: stable@vger.kernel.org
---
drivers/md/dm-integrity.c | 1 +
1 file changed, 1 insertion(+)
Index: linux-2.6/drivers/md/dm-integrity.c
===================================================================
--- linux-2.6.orig/drivers/md/dm-integrity.c 2024-04-16 21:31:36.000000000 +0200
+++ linux-2.6/drivers/md/dm-integrity.c 2024-05-20 16:27:50.000000000 +0200
@@ -3492,6 +3492,7 @@ static void dm_integrity_io_hints(struct
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;
+ limits->discard_granularity = ic->sectors_per_block << SECTOR_SHIFT;
}
limits->max_integrity_segments = USHRT_MAX;
}
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2024-05-20 14:48 [PATCH] dm-integrity: set discard_granularity to logical block size Mikulas Patocka
2024-05-20 15:02 ` Christoph Hellwig
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