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udf: use sb_bdev_nr_blocks

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Use the sb_bdev_nr_blocks helper instead of open coding it.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20211018101130.1838532-31-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2021-10-18 12:11:30 +02:00 • committed by Jens Axboe
parent 2ffae493dc
commit e4ae4735f7
2 changed files with 5 additions and 9 deletions
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5
fs/udf/lowlevel.c
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@ -47,8 +47,7 @@ unsigned int udf_get_last_session(struct super_block *sb)
unsigned long udf_get_last_block(struct super_block *sb)
{
struct block_device *bdev = sb->s_bdev;
struct cdrom_device_info *cdi = disk_to_cdi(bdev->bd_disk);
struct cdrom_device_info *cdi = disk_to_cdi(sb->s_bdev->bd_disk);
unsigned long lblock = 0;
/*
@ -56,7 +55,7 @@ unsigned long udf_get_last_block(struct super_block *sb)
* Try using the device size...
*/
if (!cdi || cdrom_get_last_written(cdi, &lblock) || lblock == 0)
lblock = i_size_read(bdev->bd_inode) >> sb->s_blocksize_bits;
lblock = sb_bdev_nr_blocks(sb);
if (lblock)
return lblock - 1;