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udf: create common function for tag checksumming

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Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Acked-by: Jan Kara <jack@suse.cz>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Marcin Slusarz
2008-02-08 04:20:39 -08:00
committed by Linus Torvalds
parent 4b11111aba
commit 3f2587bb22
5 changed files with 22 additions and 56 deletions
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16
fs/udf/super.c
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@ -1564,7 +1564,6 @@ static void udf_open_lvid(struct super_block *sb)
struct udf_sb_info *sbi = UDF_SB(sb);
struct buffer_head *bh = sbi->s_lvid_bh;
if (bh) {
int i;
kernel_timestamp cpu_time;
struct logicalVolIntegrityDesc *lvid =
(struct logicalVolIntegrityDesc *)bh->b_data;
@ -1582,12 +1581,7 @@ static void udf_open_lvid(struct super_block *sb)
le16_to_cpu(lvid->descTag.descCRCLength),
0));
lvid->descTag.tagChecksum = 0;
for (i = 0; i < 16; i++)
if (i != 4)
lvid->descTag.tagChecksum +=
((uint8_t *) &(lvid->descTag))[i];
lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
mark_buffer_dirty(bh);
}
}
@ -1595,7 +1589,6 @@ static void udf_open_lvid(struct super_block *sb)
static void udf_close_lvid(struct super_block *sb)
{
kernel_timestamp cpu_time;
int i;
struct udf_sb_info *sbi = UDF_SB(sb);
struct buffer_head *bh = sbi->s_lvid_bh;
struct logicalVolIntegrityDesc *lvid;
@ -1626,12 +1619,7 @@ static void udf_close_lvid(struct super_block *sb)
le16_to_cpu(lvid->descTag.descCRCLength),
0));
lvid->descTag.tagChecksum = 0;
for (i = 0; i < 16; i++)
if (i != 4)
lvid->descTag.tagChecksum +=
((uint8_t *)&(lvid->descTag))[i];
lvid->descTag.tagChecksum = udf_tag_checksum(&lvid->descTag);
mark_buffer_dirty(bh);
}
}