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From: Keith Busch <kbusch@fb.com>
To: <linux-fsdevel@vger.kernel.org>, <linux-block@vger.kernel.org>,
	<linux-nvme@lists.infradead.org>
Cc: <axboe@kernel.dk>, Kernel Team <Kernel-team@fb.com>, <hch@lst.de>,
	<willy@infradead.org>, <sagi@grimberg.me>,
	Keith Busch <kbusch@kernel.org>
Subject: [PATCH 03/12] iomap: get logical block size directly
Date: Thu, 30 Jun 2022 13:42:03 -0700	[thread overview]
Message-ID: <20220630204212.1265638-4-kbusch@fb.com> (raw)
In-Reply-To: <20220630204212.1265638-1-kbusch@fb.com>

From: Keith Busch <kbusch@kernel.org>

Don't transform the logical block size to a bit shift only to shift it
back out to the size. Just use the size.

Signed-off-by: Keith Busch <kbusch@kernel.org>
---
 fs/iomap/direct-io.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/iomap/direct-io.c b/fs/iomap/direct-io.c
index 5d478a95efdf..40cbf2025386 100644
--- a/fs/iomap/direct-io.c
+++ b/fs/iomap/direct-io.c
@@ -241,7 +241,7 @@ static loff_t iomap_dio_bio_iter(const struct iomap_iter *iter,
 	const struct iomap *iomap = &iter->iomap;
 	struct inode *inode = iter->inode;
 	struct block_device *bdev = iomap->bdev;
-	unsigned int blkbits = blksize_bits(bdev_logical_block_size(bdev));
+	unsigned int blksz = bdev_logical_block_size(bdev);
 	unsigned int fs_block_size = i_blocksize(inode), pad;
 	loff_t length = iomap_length(iter);
 	loff_t pos = iter->pos;
@@ -253,7 +253,7 @@ static loff_t iomap_dio_bio_iter(const struct iomap_iter *iter,
 	size_t copied = 0;
 	size_t orig_count;
 
-	if ((pos | length) & ((1 << blkbits) - 1) ||
+	if ((pos | length) & (blksz - 1) ||
 	    !bdev_iter_is_aligned(bdev, dio->submit.iter))
 		return -EINVAL;
 
-- 
2.30.2


  parent reply	other threads:[~2022-06-30 20:42 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-30 20:42 [PATCH 00/12] block: support for partial sector reads Keith Busch
2022-06-30 20:42 ` [PATCH 01/12] block: move direct io alignment check to common Keith Busch
2022-06-30 20:42 ` [PATCH 02/12] iomap: save copy of bdev for direct io Keith Busch
2022-06-30 20:42 ` Keith Busch [this message]
2022-06-30 20:42 ` [PATCH 04/12] iomap: use common blkdev alignment check Keith Busch
2022-06-30 20:42 ` [PATCH 05/12] block: add bit bucket capabilities Keith Busch
2022-06-30 20:42 ` [PATCH 06/12] nvme: add support for bit buckets Keith Busch
2022-06-30 20:42 ` [PATCH 07/12] block: allow copying pre-registered bvecs Keith Busch
2022-07-01  2:40   ` Keith Busch
2022-06-30 20:42 ` [PATCH 08/12] block: add bio number of vecs helper for partials Keith Busch
2022-06-30 20:42 ` [PATCH 09/12] block: add partial sector parameter helper Keith Busch
2022-06-30 20:42 ` [PATCH 10/12] block: add direct-io partial sector read support Keith Busch
2022-06-30 20:42 ` [PATCH 11/12] iomap: " Keith Busch
2022-06-30 20:42 ` [PATCH 12/12] block: export and document bit_bucket attribute Keith Busch

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