Commit 138c1a38 authored by Jens Axboe's avatar Jens Axboe
Browse files

block: use new bdev_nr_bytes() helper for blkdev_{read,write}_iter() 



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: default avatarJens Axboe <axboe@kernel.dk>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/a72767cd-3c6d-47f7-80f4-aa025a17b2cb@kernel.dk


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 2116274a

block/fops.c

+2 −2
Original line number Diff line number Diff line
@@ -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;