diff options
Diffstat (limited to 'fs/udf/lowlevel.c')
| -rw-r--r-- | fs/udf/lowlevel.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/fs/udf/lowlevel.c b/fs/udf/lowlevel.c index f1094cdcd6cd..9d847a7a0905 100644 --- a/fs/udf/lowlevel.c +++ b/fs/udf/lowlevel.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * lowlevel.c * @@ -5,11 +6,6 @@ * Low Level Device Routines for the UDF filesystem * * COPYRIGHT - * This file is distributed under the terms of the GNU General Public - * License (GPL). Copies of the GPL can be obtained from: - * ftp://prep.ai.mit.edu/pub/gnu/GPL - * Each contributing author retains all rights to their own work. - * * (C) 1999-2001 Ben Fennema * * HISTORY @@ -45,18 +41,20 @@ unsigned int udf_get_last_session(struct super_block *sb) return 0; } -unsigned long udf_get_last_block(struct super_block *sb) +udf_pblk_t 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; /* * The cdrom layer call failed or returned obviously bogus value? * 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; + if (!cdi || cdrom_get_last_written(cdi, &lblock) || lblock == 0) { + if (sb_bdev_nr_blocks(sb) > ~(udf_pblk_t)0) + return 0; + lblock = sb_bdev_nr_blocks(sb); + } if (lblock) return lblock - 1; |