linux-kernel - [PATCH 06/34] microblaze: add missing pgtable_page

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Date:	Thu, 10 Oct 2013 21:05:31 +0300
From:	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Peter Zijlstra <peterz@...radead.org>,
	Ingo Molnar <mingo@...hat.com>
Cc:	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	linux-arch@...r.kernel.org,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Michal Simek <monstr@...str.eu>
Subject: [PATCH 06/34] microblaze: add missing pgtable_page_ctor/dtor calls

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@...ux.intel.com>
Cc: Michal Simek <monstr@...str.eu>
---
 arch/microblaze/include/asm/pgalloc.h | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/arch/microblaze/include/asm/pgalloc.h b/arch/microblaze/include/asm/pgalloc.h
index ebd3579248..7fdf7fabc7 100644
--- a/arch/microblaze/include/asm/pgalloc.h
+++ b/arch/microblaze/include/asm/pgalloc.h
@@ -122,8 +122,13 @@ static inline struct page *pte_alloc_one(struct mm_struct *mm,
 #endif
 
 	ptepage = alloc_pages(flags, 0);
-	if (ptepage)
-		clear_highpage(ptepage);
+	if (!ptepage)
+		return NULL;
+	clear_highpage(ptepage);
+	if (!pgtable_page_ctor(ptepage)) {
+		__free_page(ptepage);
+		return NULL;
+	}
 	return ptepage;
 }
 
@@ -158,8 +163,9 @@ extern inline void pte_free_slow(struct page *ptepage)
 	__free_page(ptepage);
 }
 
-extern inline void pte_free(struct mm_struct *mm, struct page *ptepage)
+static inline void pte_free(struct mm_struct *mm, struct page *ptepage)
 {
+	pgtable_page_dtor(ptepage);
 	__free_page(ptepage);
 }
 
-- 
1.8.4.rc3

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