[PATCH mm-unstable v9 09/31] mm: Convert pmd_ptlock_free() to use ptdescs

["Vishal Moola (Oracle)" <vishal.moola@gmail.com>]

This removes some direct accesses to struct page, working towards
splitting out struct ptdesc from struct page.

Acked-by: Mike Rapoport (IBM) <rppt@kernel.org>
Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
---
 include/linux/mm.h | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 13947b17f25e..aa6f77c71453 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -3001,12 +3001,12 @@ static inline bool pmd_ptlock_init(struct ptdesc *ptdesc)
 	return ptlock_init(ptdesc);
 }
 
-static inline void pmd_ptlock_free(struct page *page)
+static inline void pmd_ptlock_free(struct ptdesc *ptdesc)
 {
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
-	VM_BUG_ON_PAGE(page->pmd_huge_pte, page);
+	VM_BUG_ON_PAGE(ptdesc->pmd_huge_pte, ptdesc_page(ptdesc));
 #endif
-	ptlock_free(page);
+	ptlock_free(ptdesc_page(ptdesc));
 }
 
 #define pmd_huge_pte(mm, pmd) (pmd_ptdesc(pmd)->pmd_huge_pte)
@@ -3019,7 +3019,7 @@ static inline spinlock_t *pmd_lockptr(struct mm_struct *mm, pmd_t *pmd)
 }
 
 static inline bool pmd_ptlock_init(struct ptdesc *ptdesc) { return true; }
-static inline void pmd_ptlock_free(struct page *page) {}
+static inline void pmd_ptlock_free(struct ptdesc *ptdesc) {}
 
 #define pmd_huge_pte(mm, pmd) ((mm)->pmd_huge_pte)
 
@@ -3043,7 +3043,7 @@ static inline bool pgtable_pmd_page_ctor(struct page *page)
 
 static inline void pgtable_pmd_page_dtor(struct page *page)
 {
-	pmd_ptlock_free(page);
+	pmd_ptlock_free(page_ptdesc(page));
 	__ClearPageTable(page);
 	dec_lruvec_page_state(page, NR_PAGETABLE);
 }
-- 
2.40.1