linux-kernel - [PATCH AUTOSEL 4.14 08/10] dm-integrity: set dma_alignment limit in io

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Message-Id: <20221123124520.266643-8-sashal@kernel.org>
Date:   Wed, 23 Nov 2022 07:45:16 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Keith Busch <kbusch@...nel.org>, Mike Snitzer <snitzer@...nel.org>,
        Jens Axboe <axboe@...nel.dk>, Sasha Levin <sashal@...nel.org>,
        agk@...hat.com, dm-devel@...hat.com
Subject: [PATCH AUTOSEL 4.14 08/10] dm-integrity: set dma_alignment limit in io_hints

From: Keith Busch <kbusch@...nel.org>

[ Upstream commit 29aa778bb66795e6a78b1c99beadc83887827868 ]

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@...nel.org>
Reviewed-by: Mike Snitzer <snitzer@...nel.org>
Link: https://lore.kernel.org/r/20221110184501.2451620-5-kbusch@meta.com
Signed-off-by: Jens Axboe <axboe@...nel.dk>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 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 6579aa46f544..e7e44c1d5553 100644
--- a/drivers/md/dm-integrity.c
+++ b/drivers/md/dm-integrity.c
@@ -2297,6 +2297,7 @@ 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;
 	}
 }
 
-- 
2.35.1