It will fix NR_PAGETABLE accounting. It's also required if the arch is
going ever support split ptl.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Jonas Bonn <jonas@xxxxxxxxxxxx>
---
arch/openrisc/include/asm/pgalloc.h | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/arch/openrisc/include/asm/pgalloc.h b/arch/openrisc/include/asm/pgalloc.h
index 05c39ecd2e..21484e5b9e 100644
--- a/arch/openrisc/include/asm/pgalloc.h
+++ b/arch/openrisc/include/asm/pgalloc.h
@@ -78,8 +78,13 @@ static inline struct page *pte_alloc_one(struct mm_struct *mm,
{
struct page *pte;
pte = alloc_pages(GFP_KERNEL|__GFP_REPEAT, 0);
- if (pte)
- clear_page(page_address(pte));
+ if (!pte)
+ return NULL;
+ clear_page(page_address(pte));
+ if (!pgtable_page_ctor(pte)) {
+ __free_page(pte);
+ return NULL;
+ }
return pte;
}
@@ -90,6 +95,7 @@ static inline void pte_free_kernel(struct mm_struct *mm, pte_t *pte)
static inline void pte_free(struct mm_struct *mm, struct page *pte)
{
+ pgtable_page_dtor(pte);
__free_page(pte);
}
--
1.8.4.rc3
--
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