Error: the initial value has an unknown field 'ioctl'

This error is found on the Internet. In version 3.0.0.15, The file_operation struct of the kernel has deleted the ioctl function, replacing the following:
Long (* unlocked_ioctl) (struct file *, unsigned int, unsigned long );
Long (* compat_ioctl) (struct file *, unsigned int, unsigned long );

File_operation struct is defined in/usr/src/linux-3.0.0.15/include/Linux/fs. h.

1546 struct file_operations {1547         struct module *owner;1548         loff_t (*llseek) (struct file *, loff_t, int);1549         ssize_t (*read) (struct file *, char __user *, size_t, loff_t *);1550         ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *);1551         ssize_t (*aio_read) (struct kiocb *, const struct iovec *, unsigned long, loff_t);1552         ssize_t (*aio_write) (struct kiocb *, const struct iovec *, unsigned long, loff_t);1553         int (*readdir) (struct file *, void *, filldir_t);1554         unsigned int (*poll) (struct file *, struct poll_table_struct *);1555         long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);1556         long (*compat_ioctl) (struct file *, unsigned int, unsigned long);1557         int (*mmap) (struct file *, struct vm_area_struct *);1558         int (*open) (struct inode *, struct file *);1559         int (*flush) (struct file *, fl_owner_t id);1560         int (*release) (struct inode *, struct file *);1561         int (*fsync) (struct file *, int datasync);1562         int (*aio_fsync) (struct kiocb *, int datasync);1563         int (*fasync) (int, struct file *, int);1564         int (*lock) (struct file *, int, struct file_lock *);1565         ssize_t (*sendpage) (struct file *, struct page *, int, size_t, loff_t *, int);1566         unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);1567         int (*check_flags)(int);1568         int (*flock) (struct file *, int, struct file_lock *);1569         ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int);1570         ssize_t (*splice_read)(struct file *, loff_t *, struct pipe_inode_info *, size_t, unsigned int);1571         int (*setlease)(struct file *, long, struct file_lock **);1572         long (*fallocate)(struct file *file, int mode, loff_t offset,1573                           loff_t len);1574 };

The definition of file_operation in 2.6.30.4 is as follows:

1484 struct file_operations {1485         struct module *owner;1486         loff_t (*llseek) (struct file *, loff_t, int);1487         ssize_t (*read) (struct file *, char __user *, size_t, loff_t *);1488         ssize_t (*write) (struct file *, const char __user *, size_t, loff_t *);1489         ssize_t (*aio_read) (struct kiocb *, const struct iovec *, unsigned long, loff_t);1490         ssize_t (*aio_write) (struct kiocb *, const struct iovec *, unsigned long, loff_t);1491         int (*readdir) (struct file *, void *, filldir_t);1492         unsigned int (*poll) (struct file *, struct poll_table_struct *);1493         int (*ioctl) (struct inode *, struct file *, unsigned int, unsigned long);1494         long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);1495         long (*compat_ioctl) (struct file *, unsigned int, unsigned long);1496         int (*mmap) (struct file *, struct vm_area_struct *);1497         int (*open) (struct inode *, struct file *);1498         int (*flush) (struct file *, fl_owner_t id);1499         int (*release) (struct inode *, struct file *);1500         int (*fsync) (struct file *, struct dentry *, int datasync);1501         int (*aio_fsync) (struct kiocb *, int datasync);1502         int (*fasync) (int, struct file *, int);1503         int (*lock) (struct file *, int, struct file_lock *);1504         ssize_t (*sendpage) (struct file *, struct page *, int, size_t, loff_t *, int);1505         unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);1506         int (*check_flags)(int);1507         int (*flock) (struct file *, int, struct file_lock *);1508         ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int);1509         ssize_t (*splice_read)(struct file *, loff_t *, struct pipe_inode_info *, size_t, unsigned int);1510         int (*setlease)(struct file *, long, struct file_lock **);1511 };

Modify the value of file_operation:
. Unlocked_ioctl = xxx_ioctl