1 /* highmem.c: arch-specific highmem stuff
3 * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
11 #include <linux/highmem.h>
13 void *kmap(struct page *page)
16 if (!PageHighMem(page))
17 return page_address(page);
18 return kmap_high(page);
21 void kunmap(struct page *page)
25 if (!PageHighMem(page))
30 struct page *kmap_atomic_to_page(void *ptr)
32 return virt_to_page(ptr);