Commit 2a93ad8f authored Oct 18, 2021 by Christoph Hellwig Committed by Jens Axboe Oct 18, 2021

block: use bdev_nr_bytes instead of open coding it in blkdev_fallocate



Use the proper helper to read the block device size.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com>
Link: https://lore.kernel.org/r/20211018101130.1838532-25-hch@lst.de


Signed-off-by: Jens Axboe <axboe@kernel.dk>

parent be9a7b3e

block/fops.c

+1 −1

Original line number	Original line	Diff line number	Diff line
	@@ -535,7 +535,7 @@ static long blkdev_fallocate(struct file *file, int mode, loff_t start,
	return -EOPNOTSUPP;		return -EOPNOTSUPP;

	/* Don't go off the end of the device. */		/* Don't go off the end of the device. */
	isize = i_size_read(bdev->bd_inode);		isize = bdev_nr_bytes(bdev);
	if (start >= isize)		if (start >= isize)
	return -EINVAL;		return -EINVAL;
	if (end >= isize) {		if (end >= isize) {