[PATCH mm-unstable v9 07/31] mm: Convert pmd_ptlock_init() to use ptdescs

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

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

Acked-by: Mike Rapoport (IBM) <rppt@xxxxxxxxxx>
Signed-off-by: Vishal Moola (Oracle) <vishal.moola@xxxxxxxxx>
---
 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 bc82a64e5f01..040982fe9063 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2993,12 +2993,12 @@ static inline spinlock_t *pmd_lockptr(struct mm_struct 
*mm, pmd_t *pmd)
        return ptlock_ptr(pmd_ptdesc(pmd));
 }
 
-static inline bool pmd_ptlock_init(struct page *page)
+static inline bool pmd_ptlock_init(struct ptdesc *ptdesc)
 {
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
-       page->pmd_huge_pte = NULL;
+       ptdesc->pmd_huge_pte = NULL;
 #endif
-       return ptlock_init(page);
+       return ptlock_init(ptdesc_page(ptdesc));
 }
 
 static inline void pmd_ptlock_free(struct page *page)
@@ -3018,7 +3018,7 @@ static inline spinlock_t *pmd_lockptr(struct mm_struct 
*mm, pmd_t *pmd)
        return &mm->page_table_lock;
 }
 
-static inline bool pmd_ptlock_init(struct page *page) { return true; }
+static inline bool pmd_ptlock_init(struct ptdesc *ptdesc) { return true; }
 static inline void pmd_ptlock_free(struct page *page) {}
 
 #define pmd_huge_pte(mm, pmd) ((mm)->pmd_huge_pte)
@@ -3034,7 +3034,7 @@ static inline spinlock_t *pmd_lock(struct mm_struct *mm, 
pmd_t *pmd)
 
 static inline bool pgtable_pmd_page_ctor(struct page *page)
 {
-       if (!pmd_ptlock_init(page))
+       if (!pmd_ptlock_init(page_ptdesc(page)))
                return false;
        __SetPageTable(page);
        inc_lruvec_page_state(page, NR_PAGETABLE);
-- 
2.40.1