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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;

9
fs/udf/super.c
View File

@ -1175,8 +1175,7 @@ static int udf_load_vat(struct super_block *sb, int p_index, int type1_index)
struct udf_inode_info *vati;
uint32_t pos;
struct virtualAllocationTable20 *vat20;
sector_t blocks = i_size_read(sb->s_bdev->bd_inode) >>
sb->s_blocksize_bits;
sector_t blocks = sb_bdev_nr_blocks(sb);
udf_find_vat_block(sb, p_index, type1_index, sbi->s_last_block);
if (!sbi->s_vat_inode &&
@ -1838,8 +1837,7 @@ static int udf_check_anchor_block(struct super_block *sb, sector_t block,
int ret;
if (UDF_QUERY_FLAG(sb, UDF_FLAG_VARCONV) &&
udf_fixed_to_variable(block) >=
i_size_read(sb->s_bdev->bd_inode) >> sb->s_blocksize_bits)
udf_fixed_to_variable(block) >= sb_bdev_nr_blocks(sb))
return -EAGAIN;
bh = udf_read_tagged(sb, block, block, &ident);
@ -1901,8 +1899,7 @@ static int udf_scan_anchors(struct super_block *sb, sector_t *lastblock,
last[last_count++] = *lastblock - 152;
for (i = 0; i < last_count; i++) {
if (last[i] >= i_size_read(sb->s_bdev->bd_inode) >>
sb->s_blocksize_bits)
if (last[i] >= sb_bdev_nr_blocks(sb))
continue;
ret = udf_check_anchor_block(sb, last[i], fileset);
if (ret != -EAGAIN) {