Use the proper helper to read the block device size.

Signed-off-by: Christoph Hellwig <h...@lst.de>
Reviewed-by: Kees Cook <keesc...@chromium.org>
Reviewed-by: Jan Kara <j...@suse.cz>
Reviewed-by: Chaitanya Kulkarni <k...@nvidia.com>
---
 block/fops.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/fops.c b/block/fops.c
index 7bb9581a146cf..a6a4d412720cd 100644
--- a/block/fops.c
+++ b/block/fops.c
@@ -548,7 +548,7 @@ static long blkdev_fallocate(struct file *file, int mode, 
loff_t start,
                return -EOPNOTSUPP;
 
        /* Don't go off the end of the device. */
-       isize = i_size_read(bdev->bd_inode);
+       isize = bdev_nr_bytes(bdev);
        if (start >= isize)
                return -EINVAL;
        if (end >= isize) {
-- 
2.30.2

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