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block: introduce bdev_iter_is_aligned helper
author
Keith Busch
<kbusch@kernel.org>
Fri, 10 Jun 2022 19:58:28 +0000
(12:58 -0700)
committer
Jens Axboe
<axboe@kernel.dk>
Mon, 27 Jun 2022 12:29:11 +0000
(06:29 -0600)
Provide a convenient function for this repeatable coding pattern.
Signed-off-by: Keith Busch <kbusch@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link:
https://lore.kernel.org/r/20220610195830.3574005-10-kbusch@fb.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
include/linux/blkdev.h
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diff --git
a/include/linux/blkdev.h
b/include/linux/blkdev.h
index
2556fcd
..
0b8bc1f
100644
(file)
--- a/
include/linux/blkdev.h
+++ b/
include/linux/blkdev.h
@@
-1370,6
+1370,13
@@
static inline unsigned int bdev_dma_alignment(struct block_device *bdev)
return queue_dma_alignment(bdev_get_queue(bdev));
}
+static inline bool bdev_iter_is_aligned(struct block_device *bdev,
+ struct iov_iter *iter)
+{
+ return iov_iter_is_aligned(iter, bdev_dma_alignment(bdev),
+ bdev_logical_block_size(bdev) - 1);
+}
+
static inline int blk_rq_aligned(struct request_queue *q, unsigned long addr,
unsigned int len)
{