1#ifndef _LINUX_PFN_H_
2#define _LINUX_PFN_H_
3
4#define PFN_ALIGN(x)	(((unsigned long)(x) + (PAGE_SIZE - 1)) & PAGE_MASK)
5#define PFN_UP(x)	(((x) + PAGE_SIZE-1) >> PAGE_SHIFT)
6#define PFN_DOWN(x)	((x) >> PAGE_SHIFT)
7#define PFN_PHYS(x)	((x) << PAGE_SHIFT)
8
9#endif
10