From: Keith Busch <kbusch@fb.com>
To: <linux-fsdevel@vger.kernel.org>, <linux-block@vger.kernel.org>
Cc: <axboe@kernel.dk>, Kernel Team <Kernel-team@fb.com>, <hch@lst.de>,
<bvanassche@acm.org>, <damien.lemoal@opensource.wdc.com>,
<ebiggers@kernel.org>, Keith Busch <kbusch@kernel.org>
Subject: [PATCHv3 3/6] block: introduce bdev_dma_alignment helper
Date: Mon, 23 May 2022 14:01:16 -0700 [thread overview]
Message-ID: <20220523210119.2500150-4-kbusch@fb.com> (raw)
In-Reply-To: <20220523210119.2500150-1-kbusch@fb.com>
From: Keith Busch <kbusch@kernel.org>
Preparing for upcoming dma_alignment users that have a block_device, but
don't need the request_queue.
Signed-off-by: Keith Busch <kbusch@kernel.org>
---
include/linux/blkdev.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index 5bdf2ac9142c..834b981ef01b 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -1365,6 +1365,11 @@ static inline int queue_dma_alignment(const struct request_queue *q)
return q ? q->dma_alignment : 511;
}
+static inline unsigned int bdev_dma_alignment(struct block_device *bdev)
+{
+ return queue_dma_alignment(bdev_get_queue(bdev));
+}
+
static inline int blk_rq_aligned(struct request_queue *q, unsigned long addr,
unsigned int len)
{
--
2.30.2
next prev parent reply other threads:[~2022-05-23 21:01 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-23 21:01 [PATCHv3 0/6] direct io dma alignment Keith Busch
2022-05-23 21:01 ` [PATCHv3 1/6] block/bio: remove duplicate append pages code Keith Busch
2022-05-24 6:00 ` Christoph Hellwig
2022-05-24 6:24 ` Johannes Thumshirn
2022-05-24 14:17 ` Pankaj Raghav
2022-05-24 15:38 ` Keith Busch
2022-05-25 7:49 ` Pankaj Raghav
2022-05-25 8:30 ` Damien Le Moal
2022-05-25 13:37 ` Keith Busch
2022-05-25 14:25 ` Pankaj Raghav
2022-05-23 21:01 ` [PATCHv3 2/6] block: export dma_alignment attribute Keith Busch
2022-05-24 6:02 ` Christoph Hellwig
2022-05-24 6:24 ` Johannes Thumshirn
2022-05-23 21:01 ` Keith Busch [this message]
2022-05-24 6:02 ` [PATCHv3 3/6] block: introduce bdev_dma_alignment helper Christoph Hellwig
2022-05-24 6:25 ` Johannes Thumshirn
2022-05-23 21:01 ` [PATCHv3 4/6] block/merge: count bytes instead of sectors Keith Busch
2022-05-24 6:07 ` Christoph Hellwig
2022-05-23 21:01 ` [PATCHv3 5/6] block/bounce: " Keith Busch
2022-05-24 6:09 ` Christoph Hellwig
2022-05-25 14:08 ` Keith Busch
2022-05-25 14:17 ` Keith Busch
2022-05-24 14:32 ` Pankaj Raghav
2022-05-23 21:01 ` [PATCHv3 6/6] block: relax direct io memory alignment Keith Busch
2022-05-24 6:12 ` Christoph Hellwig
2022-05-24 15:19 ` Pankaj Raghav
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