[PATCH 14/30] fat: use bdev_nr_sectors instead of open coding it

[Christoph Hellwig]

Use the proper helper to read the block device size.

Signed-off-by: Christoph Hellwig <hch at lst.de>
Reviewed-by: Kees Cook <keescook at chromium.org>
---
 fs/fat/inode.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index de0c9b013a851..9f3cd03668adc 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -1536,14 +1536,11 @@ static int fat_read_static_bpb(struct super_block *sb,
 	struct fat_bios_param_block *bpb)
 {
 	static const char *notdos1x = "This doesn't look like a DOS 1.x volume";
-
+	sector_t bd_sects = bdev_nr_sectors(sb->s_bdev);
 	struct fat_floppy_defaults *fdefaults = NULL;
 	int error = -EINVAL;
-	sector_t bd_sects;
 	unsigned i;
 
-	bd_sects = i_size_read(sb->s_bdev->bd_inode) / SECTOR_SIZE;
-
 	/* 16-bit DOS 1.x reliably wrote bootstrap short-jmp code */
 	if (b->ignored[0] != 0xeb || b->ignored[2] != 0x90) {
 		if (!silent)
-- 
2.30.2