extern int omfs_shrink_inode(struct inode *inode);
/* inode.c */
+extern struct buffer_head *omfs_bread(struct super_block *sb, sector_t block);
extern struct inode *omfs_iget(struct super_block *sb, ino_t inode);
extern struct inode *omfs_new_inode(struct inode *dir, int mode);
extern int omfs_reserve_block(struct super_block *sb, sector_t block);