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 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 29 extern void fastcall __init __free_pages_bootmem(struct page *page, 30 unsigned int order); 31