From cda00eba022d6a0a60740989ac79fc6a258b2d7a Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Mon, 18 Oct 2021 12:11:12 +0200 Subject: btrfs: use bdev_nr_bytes instead of open coding it Use the proper helper to read the block device size. Signed-off-by: Christoph Hellwig Reviewed-by: Kees Cook Reviewed-by: Anand Jain Reviewed-by: Chaitanya Kulkarni Acked-by: David Sterba Link: https://lore.kernel.org/r/20211018101130.1838532-13-hch@lst.de Signed-off-by: Jens Axboe --- fs/btrfs/disk-io.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/btrfs/disk-io.c') diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 355ea88d5c5f..29e7598584c4 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -3740,7 +3740,7 @@ struct btrfs_super_block *btrfs_read_dev_one_super(struct block_device *bdev, else if (ret) return ERR_PTR(ret); - if (bytenr + BTRFS_SUPER_INFO_SIZE >= i_size_read(bdev->bd_inode)) + if (bytenr + BTRFS_SUPER_INFO_SIZE >= bdev_nr_bytes(bdev)) return ERR_PTR(-EINVAL); page = read_cache_page_gfp(mapping, bytenr >> PAGE_SHIFT, GFP_NOFS); -- cgit v1.2.3