Messages in this thread Patch in this message | | | Date | Fri, 21 Jan 2005 11:40:52 +0800 | From | zhan rongkai <> | Subject | Re: [PATCH]: fix the bug of __free_pages() of mm/page_alloc.c |
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--- linux-2.6.10.orig/mm/page_alloc.c 2004-12-25 05:33:51.000000000 +0800 +++ linux-2.6.10/mm/page_alloc.c 2005-01-21 11:43:44.000000000 +0800 @@ -788,7 +788,22 @@ fastcall void __free_pages(struct page *page, unsigned int order) { - if (!PageReserved(page) && put_page_testzero(page)) { + if (!PageReserved(page)) { +#ifdef CONFIG_MMU + if (!put_page_testzero(page)) + return; +#else + int i, result = 1; + + /* + * We need to de-reference all the pages for this order -- see set_page_refs() + */ + for (i = 0; i < (1 << order); i++) + result &= put_page_testzero(page+i); + if (!result) + BUG(); +#endif /* CONFIG_MMU */ + if (order == 0) free_hot_page(page); else
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