linux/include/linux/pfn.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_PFN_H_
#define _LINUX_PFN_H_

#ifndef __ASSEMBLY__
#include <linux/types.h>

/*
 * pfn_t: encapsulates a page-frame number that is optionally backed
 * by memmap (struct page).  Whether a pfn_t has a 'struct page'
 * backing is indicated by flags in the high bits of the value.
 */
pfn_t;
#endif

#define PFN_ALIGN(x) …
#define PFN_UP(x) …
#define PFN_DOWN(x) …
#define PFN_PHYS(x) …
#define PHYS_PFN(x) …

#endif