#ifndef _I386_PGALLOC_3LEVEL_H
#define _I386_PGALLOC_3LEVEL_H

/*
 * Intel Physical Address Extension (PAE) Mode - three-level page
 * tables on PPro+ CPUs. Page-table allocation routines.
 *
 * Copyright (C) 1999 Ingo Molnar <mingo@redhat.com>
 */

extern __inline__ pmd_t *pmd_alloc_one(void)
{
	pmd_t *ret = (pmd_t *)__get_free_page(GFP_KERNEL);

	if (ret)
		memset(ret, 0, PAGE_SIZE);
	return ret;
}

extern __inline__ pmd_t *pmd_alloc_one_fast(void)
{
	unsigned long *ret;

	if ((ret = pmd_quicklist) != NULL) {
		pmd_quicklist = (unsigned long *)(*ret);
		ret[0] = 0;
		pgtable_cache_size--;
	} else
		ret = (unsigned long *)get_pmd_slow();
	return (pmd_t *)ret;
}

extern __inline__ void pmd_free_fast(pmd_t *pmd)
{
	*(unsigned long *)pmd = (unsigned long) pmd_quicklist;
	pmd_quicklist = (unsigned long *) pmd;
	pgtable_cache_size++;
}

extern __inline__ void pmd_free_slow(pmd_t *pmd)
{
	free_page((unsigned long)pmd);
}

#endif /* _I386_PGALLOC_3LEVEL_H */