1. 根目录:
2. arch
3. alpha
4. include
5. asm
6. statfs.h

#ifndef _ALPHA_STATFS_H
#define _ALPHA_STATFS_H

#include <linux/types.h>

/* Alpha is the only 64-bit platform with 32-bit statfs. And doesn't
   even seem to implement statfs64 */
#define __statfs_word __u32

#include <asm-generic/statfs.h>

#endif