Messages in this thread Patch in this message |  | | Date | Wed, 4 Dec 2013 10:59:18 -0600 | From | Alex Thorlton <> | Subject | Re: [PATCH 03/15] mm: thp: give transparent hugepage code a separate copy_page |
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> -void copy_huge_page(struct page *dst, struct page *src) > -{ > - int i; > - struct hstate *h = page_hstate(src); > - > - if (unlikely(pages_per_huge_page(h) > MAX_ORDER_NR_PAGES)) {
With CONFIG_HUGETLB_PAGE=n, the kernel fails to build, throwing this error:
mm/migrate.c: In function ‘copy_huge_page’: mm/migrate.c:473: error: implicit declaration of function ‘page_hstate’
I got it to build by sticking the following into hugetlb.h:
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index 4694afc..fd76912 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -403,6 +403,7 @@ struct hstate {}; #define hstate_sizelog(s) NULL #define hstate_vma(v) NULL #define hstate_inode(i) NULL +#define page_hstate(p) NULL #define huge_page_size(h) PAGE_SIZE #define huge_page_mask(h) PAGE_MASK #define vma_kernel_pagesize(v) PAGE_SIZE I figure that the #define I stuck in isn't actually solving the real problem, but it got things working again.
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