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/* Number of bytes to readahead on disc access */

#define FAT_READAHEAD (18*1024)

struct buffer_head *fat_bread (struct super_block *sb, int block);

struct buffer_head *fat_getblk (struct super_block *sb, int block);

void fat_brelse (struct super_block *sb, struct buffer_head *bh);

void fat_mark_buffer_dirty (struct super_block *sb,

         struct buffer_head *bh,

         int dirty_val);

void fat_set_uptodate (struct super_block *sb,

         struct buffer_head *bh,

         int val);

int fat_is_uptodate (struct super_block *sb, struct buffer_head *bh);

void fat_ll_rw_block (struct super_block *sb, int opr,

        int nbreq, struct buffer_head *bh[32]);