On 12/26/2012 11:11 AM, Tang Chen wrote:
On 12/26/2012 10:49 AM, Tang Chen wrote:
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)
And also, I think we don't need to check MIX_SECTION_INFO since it is
for the pageblock_flags, not the memmap in the section.
Oh, no :)
We also need to check MIX_SECTION_INFO because we set pgd, pud, pmd
pages as MIX_SECTION_INFO in register_page_bootmem_memmap() in patch6.
Thanks. :)
Thanks. :)
+ 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. :)
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