[PATCH v4 11/34] mm: Convert pmd_ptlock_free() 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.

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 f48e626d9c98..3b54bb4c9753 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2950,12 +2950,12 @@ 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)
@@ -2968,7 +2968,7 @@ 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)
 
@@ -2992,7 +2992,7 @@ 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