forked from luck/tmp_suning_uos_patched
a226f6c899
The attached patch cleans up the way the bootmem allocator frees pages. A new function, __free_pages_bootmem(), is provided in mm/page_alloc.c that is called from mm/bootmem.c to turn pages over to the main allocator. All the bits of code to initialise pages (clearing PG_reserved and setting the page count) are moved to here. The checks on page validity are removed, on the assumption that the struct page arrays will have been prepared correctly. Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
31 lines
900 B
C
31 lines
900 B
C
/* internal.h: mm/ internal definitions
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*
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* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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static inline void set_page_refs(struct page *page, int order)
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{
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#ifdef CONFIG_MMU
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set_page_count(page, 1);
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#else
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int i;
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/*
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* We need to reference all the pages for this order, otherwise if
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* anyone accesses one of the pages with (get/put) it will be freed.
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* - eg: access_process_vm()
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*/
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for (i = 0; i < (1 << order); i++)
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set_page_count(page + i, 1);
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#endif /* CONFIG_MMU */
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}
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extern void fastcall __init __free_pages_bootmem(struct page *page,
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unsigned int order);
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