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1 typedef unsigned long long u64;
2 struct super_block {
3         unsigned s_blocksize;
4         struct block_device *s_bdev;
5 };
6 struct buffer_head {
7         u64 b_blocknr;
8 };
9 int sb_bread(struct super_block *sb, u64 block)
10 {
11         return __bread(sb->s_bdev, block, sb->s_blocksize);
12 }
13 int sysv_fill_super(struct super_block *sb)
14 {
15         struct buffer_head *bh;
16         unsigned blocknr;
17         if (test()) {
18                 blocknr = bh->b_blocknr >> 1;
19                 bh = sb_bread(sb, blocknr);
20         }
21 }