From: Jens Axboe <axboe@kernel.dk>
Date: Thu, 4 Nov 2021 15:13:17 -0600
Subject: [PATCH] block: use new bdev_nr_bytes() helper for
blkdev_{read,write}_iter()
Git-commit: 138c1a38113d989416df57e9f8973c10c9e1fa04
Patch-mainline: v5.16-rc1
References: jsc#PED-1183
We have new helpers for this, use them rather than the slower inode
size reads. This makes the read/write path consistent with most of
the rest of block as well.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/a72767cd-3c6d-47f7-80f4-aa025a17b2cb@kernel.dk
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Acked-by: Hannes Reinecke <hare@suse.com>
---
block/fops.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/block/fops.c b/block/fops.c
index 2ae8a7bd2b84..e6c5b35aa5a5 100644
--- a/block/fops.c
+++ b/block/fops.c
@@ -460,7 +460,7 @@ static ssize_t blkdev_write_iter(struct kiocb *iocb, struct iov_iter *from)
{
struct block_device *bdev = iocb->ki_filp->private_data;
struct inode *bd_inode = bdev->bd_inode;
- loff_t size = i_size_read(bd_inode);
+ loff_t size = bdev_nr_bytes(bdev);
struct blk_plug plug;
size_t shorted = 0;
ssize_t ret;
@@ -498,7 +498,7 @@ static ssize_t blkdev_write_iter(struct kiocb *iocb, struct iov_iter *from)
static ssize_t blkdev_read_iter(struct kiocb *iocb, struct iov_iter *to)
{
struct block_device *bdev = iocb->ki_filp->private_data;
- loff_t size = i_size_read(bdev->bd_inode);
+ loff_t size = bdev_nr_bytes(bdev);
loff_t pos = iocb->ki_pos;
size_t shorted = 0;
ssize_t ret;
--
2.35.3