[PATCH 3.12 022/155] mm, hugetlb: define page_hstate for !HUGETLB_PAGE

[Jiri Slaby]

3.12-stable review patch.  If anyone has any objections, please let me know.

===============

This is a single hunk introduced later in the upstream commit
cb900f41215447433cbc456d1c4294e858a84d7c (mm, hugetlb: convert
hugetlbfs to use split pmd lock). We need page_hstate even for
!HUGETLB_PAGE case for the next patch (mm: thp: give transparent
hugepage code a separate copy_page).

Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
 include/linux/hugetlb.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 7e8e0001f241..2a943a396d20 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -418,6 +418,7 @@ struct hstate {};
 #define hstate_sizelog(s) NULL
 #define hstate_vma(v) NULL
 #define hstate_inode(i) NULL
+#define page_hstate(page) NULL
 #define huge_page_size(h) PAGE_SIZE
 #define huge_page_mask(h) PAGE_MASK
 #define vma_kernel_pagesize(v) PAGE_SIZE
-- 
2.3.4

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