static int block_ioctl(struct inode *inode, struct file *file, unsigned cmd, unsigned long arg) 
static long block_ioctl(struct file *file, unsigned cmd, unsigned long arg) 
static int block_ioctl(struct inode *inode, struct file *file, unsigned cmd,			unsigned long arg){	return blkdev_ioctl(file->f_mapping->host, file, cmd, arg);}
4520	/local/tlutelli/issta_data/temp/c/2005_temp/2005/4520/bb93e3a52f8db7210258a1a2134cced0b78a46e1/block_dev.c/clean/fs/block_dev.c