| /* internal.h: mm/ internal definitions |
| * |
| * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved. |
| * Written by David Howells (dhowells@redhat.com) |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| */ |
| #ifndef __MM_INTERNAL_H |
| #define __MM_INTERNAL_H |
| |
| #include <linux/mm.h> |
| |
| static inline void set_page_count(struct page *page, int v) |
| { |
| atomic_set(&page->_count, v); |
| } |
| |
| /* |
| * Turn a non-refcounted page (->_count == 0) into refcounted with |
| * a count of one. |
| */ |
| static inline void set_page_refcounted(struct page *page) |
| { |
| VM_BUG_ON(PageCompound(page) && PageTail(page)); |
| VM_BUG_ON(atomic_read(&page->_count)); |
| set_page_count(page, 1); |
| } |
| |
| static inline void __put_page(struct page *page) |
| { |
| atomic_dec(&page->_count); |
| } |
| |
| extern void fastcall __init __free_pages_bootmem(struct page *page, |
| unsigned int order); |
| |
| #endif |