77a8a78834
Inline set_page_refs. Signed-off-by: Nick Piggin <npiggin@suse.de> Cc: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
28 lines
805 B
C
28 lines
805 B
C
/* 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.
|
|
*/
|
|
|
|
static inline void set_page_refs(struct page *page, int order)
|
|
{
|
|
#ifdef CONFIG_MMU
|
|
set_page_count(page, 1);
|
|
#else
|
|
int i;
|
|
|
|
/*
|
|
* We need to reference all the pages for this order, otherwise if
|
|
* anyone accesses one of the pages with (get/put) it will be freed.
|
|
* - eg: access_process_vm()
|
|
*/
|
|
for (i = 0; i < (1 << order); i++)
|
|
set_page_count(page + i, 1);
|
|
#endif /* CONFIG_MMU */
|
|
}
|
|
|