On 12/25/2012 04:17 PM, Jianguo Wu wrote:
+ +static void __meminit free_pagetable(struct page *page, int order) +{ + struct zone *zone; + bool bootmem = false; + unsigned long magic; + + /* bootmem page has reserved flag */ + if (PageReserved(page)) { + __ClearPageReserved(page); + bootmem = true; + + magic = (unsigned long)page->lru.next; + if (magic == SECTION_INFO || magic == MIX_SECTION_INFO) + put_page_bootmem(page);Hi Tang, For removing memmap of sparse-vmemmap, in cpu_has_pse case, if magic == SECTION_INFO, the order will be get_order(PMD_SIZE), so we need a loop here to put all the 512 pages.
Hi Wu, Thanks for reminding me that. I truely missed it. And since in register_page_bootmem_info_section(), a whole memory section will be set as SECTION_INFO, I think we don't need to check the page magic one by one, just the first one is enough. :) I will fix it, thanks. :) -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>