lkml.org 
[lkml]   [2013]   [Dec]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
SubjectRe: [PATCH 03/15] mm: thp: give transparent hugepage code a separate copy_page
> -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.

- Alex
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2013-12-04 18:41    [W:0.109 / U:0.412 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site