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-rw-r--r--arch/frv/mm/highmem.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/arch/frv/mm/highmem.c b/arch/frv/mm/highmem.c
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1/* highmem.c: arch-specific highmem stuff
2 *
3 * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
5 *
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.
10 */
11#include <linux/highmem.h>
12
13void *kmap(struct page *page)
14{
15 might_sleep();
16 if (!PageHighMem(page))
17 return page_address(page);
18 return kmap_high(page);
19}
20
21void kunmap(struct page *page)
22{
23 if (in_interrupt())
24 BUG();
25 if (!PageHighMem(page))
26 return;
27 kunmap_high(page);
28}
29
30struct page *kmap_atomic_to_page(void *ptr)
31{
32 return virt_to_page(ptr);
33}