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1da177e4 LT |
1 | /* internal.h: mm/ internal definitions |
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 | ||
77a8a788 NP |
12 | static inline void set_page_refs(struct page *page, int order) |
13 | { | |
14 | #ifdef CONFIG_MMU | |
15 | set_page_count(page, 1); | |
16 | #else | |
17 | int i; | |
18 | ||
19 | /* | |
20 | * We need to reference all the pages for this order, otherwise if | |
21 | * anyone accesses one of the pages with (get/put) it will be freed. | |
22 | * - eg: access_process_vm() | |
23 | */ | |
24 | for (i = 0; i < (1 << order); i++) | |
25 | set_page_count(page + i, 1); | |
26 | #endif /* CONFIG_MMU */ | |
27 | } | |
28 | ||
a226f6c8 DH |
29 | extern void fastcall __init __free_pages_bootmem(struct page *page, |
30 | unsigned int order); |