[PATCH v2 1/2] mm: rename pud_page_vaddr to pud_pgtable and make it return pmd_t *

@@ -239,8 +239,10 @@ pmd_page_vaddr(pmd_t pmd)
 #define pmd_page(pmd)	(pfn_to_page(pmd_val(pmd) >> 32))
 #define pud_page(pud)	(pfn_to_page(pud_val(pud) >> 32))
 
-extern inline unsigned long pud_page_vaddr(pud_t pgd)
-{ return PAGE_OFFSET + ((pud_val(pgd) & _PFN_MASK) >> (32-PAGE_SHIFT)); }
+static inline pmd_t *pud_pgtable(pud_t pgd)
+{
+	return (pmd_t *)(PAGE_OFFSET + ((pud_val(pgd) & _PFN_MASK) >> (32-PAGE_SHIFT)));
+}
 
 extern inline int pte_none(pte_t pte)		{ return !pte_val(pte); }
 extern inline int pte_present(pte_t pte)	{ return pte_val(pte) & _PAGE_VALID; }

@@ -290,7 +292,7 @@ extern inline pte_t pte_mkyoung(pte_t pte)	{ pte_val(pte) |= __ACCESS_BITS; retu
 /* Find an entry in the second-level page table.. */
 extern inline pmd_t * pmd_offset(pud_t * dir, unsigned long address)
 {
-	pmd_t *ret = (pmd_t *) pud_page_vaddr(*dir) + ((address >> PMD_SHIFT) & (PTRS_PER_PAGE - 1));
+	pmd_t *ret = pud_pgtable(*dir) + ((address >> PMD_SHIFT) & (PTRS_PER_PAGE - 1));
 	smp_rmb(); /* see above */
 	return ret;
 }

@@ -130,7 +130,7 @@
 		flush_pmd_entry(pudp);	\
 	} while (0)
 
-static inline pmd_t *pud_page_vaddr(pud_t pud)
+static inline pmd_t *pud_pgtable(pud_t pud)
 {
 	return __va(pud_val(pud) & PHYS_MASK & (s32)PAGE_MASK);
 }

@@ -636,9 +636,9 @@ static inline phys_addr_t pud_page_paddr(pud_t pud)
 	return __pud_to_phys(pud);
 }
 
-static inline unsigned long pud_page_vaddr(pud_t pud)
+static inline pmd_t *pud_pgtable(pud_t pud)
 {
-	return (unsigned long)__va(pud_page_paddr(pud));
+	return (pmd_t *)__va(pud_page_paddr(pud));
 }
 
 /* Find an entry in the second-level page table. */

@@ -274,7 +274,7 @@ ia64_phys_addr_valid (unsigned long addr)
 #define pud_bad(pud)			(!ia64_phys_addr_valid(pud_val(pud)))
 #define pud_present(pud)		(pud_val(pud) != 0UL)
 #define pud_clear(pudp)			(pud_val(*(pudp)) = 0UL)
-#define pud_page_vaddr(pud)		((unsigned long) __va(pud_val(pud) & _PFN_MASK))
+#define pud_pgtable(pud)		((pmd_t *) __va(pud_val(pud) & _PFN_MASK))
 #define pud_page(pud)			virt_to_page((pud_val(pud) + PAGE_OFFSET))
 
 #if CONFIG_PGTABLE_LEVELS == 4

@@ -129,7 +129,7 @@ static inline void pud_set(pud_t *pudp, pmd_t *pmdp)
 
 #define __pte_page(pte) ((unsigned long)__va(pte_val(pte) & PAGE_MASK))
 #define pmd_page_vaddr(pmd) ((unsigned long)__va(pmd_val(pmd) & _TABLE_MASK))
-#define pud_page_vaddr(pud) ((unsigned long)__va(pud_val(pud) & _TABLE_MASK))
+#define pud_pgtable(pud) ((pmd_t *)__va(pud_val(pud) & _TABLE_MASK))
 
 
 #define pte_none(pte)		(!pte_val(pte))

@@ -314,9 +314,9 @@ static inline void pud_clear(pud_t *pudp)
 #endif
 
 #ifndef __PAGETABLE_PMD_FOLDED
-static inline unsigned long pud_page_vaddr(pud_t pud)
+static inline pmd_t *pud_pgtable(pud_t pud)
 {
-	return pud_val(pud);
+	return (pmd_t *)pud_val(pud);
 }
 #define pud_phys(pud)		virt_to_phys((void *)pud_val(pud))
 #define pud_page(pud)		(pfn_to_page(pud_phys(pud) >> PAGE_SHIFT))

@@ -324,8 +324,8 @@ static inline void pmd_clear(pmd_t *pmd) {
 
 
 #if CONFIG_PGTABLE_LEVELS == 3
-#define pud_page_vaddr(pud) ((unsigned long) __va(pud_address(pud)))
-#define pud_page(pud)	virt_to_page((void *)pud_page_vaddr(pud))
+#define pud_pgtable(pud) ((pmd_t *) __va(pud_address(pud)))
+#define pud_page(pud)	virt_to_page((void *)pud_pgtable(pud))
 
 /* For 64 bit we have three level tables */
 

@@ -1048,9 +1048,13 @@ extern struct page *p4d_page(p4d_t p4d);
 /* Pointers in the page table tree are physical addresses */
 #define __pgtable_ptr_val(ptr)	__pa(ptr)
 
-#define pud_page_vaddr(pud)	__va(pud_val(pud) & ~PUD_MASKED_BITS)
 #define p4d_page_vaddr(p4d)	__va(p4d_val(p4d) & ~P4D_MASKED_BITS)
 
+static inline pmd_t *pud_pgtable(pud_t pud)
+{
+	return (pmd_t *)__va(pud_val(pud) & ~PUD_MASKED_BITS);
+}
+
 #define pte_ERROR(e) \
 	pr_err("%s:%d: bad pte %08lx.\n", __FILE__, __LINE__, pte_val(e))
 #define pmd_ERROR(e) \

@@ -164,7 +164,11 @@ static inline void pud_clear(pud_t *pudp)
 #define	pud_bad(pud)		(!is_kernel_addr(pud_val(pud)) \
 				 || (pud_val(pud) & PUD_BAD_BITS))
 #define pud_present(pud)	(pud_val(pud) != 0)
-#define pud_page_vaddr(pud)	(pud_val(pud) & ~PUD_MASKED_BITS)
+
+static inline pmd_t *pud_pgtable(pud_t pud)
+{
+	return (pmd_t *)(pud_val(pud) & ~PUD_MASKED_BITS);
+}
 
 extern struct page *pud_page(pud_t pud);
 

@@ -825,7 +825,7 @@ static void __meminit remove_pud_table(pud_t *pud_start, unsigned long addr,
 			continue;
 		}
 
-		pmd_base = (pmd_t *)pud_page_vaddr(*pud);
+		pmd_base = pud_pgtable(*pud);
 		remove_pmd_table(pmd_base, addr, next);
 		free_pmd_table(pmd_base, pud);
 	}

@@ -1110,7 +1110,7 @@ int pud_free_pmd_page(pud_t *pud, unsigned long addr)
 	pmd_t *pmd;
 	int i;
 
-	pmd = (pmd_t *)pud_page_vaddr(*pud);
+	pmd = pud_pgtable(*pud);
 	pud_clear(pud);
 
 	flush_tlb_kernel_range(addr, addr + PUD_SIZE);

@@ -115,7 +115,7 @@ struct page *pud_page(pud_t pud)
 		VM_WARN_ON(!pud_huge(pud));
 		return pte_page(pud_pte(pud));
 	}
-	return virt_to_page(pud_page_vaddr(pud));
+	return virt_to_page(pud_pgtable(pud));
 }
 
 /*

@@ -60,9 +60,9 @@ static inline void pud_clear(pud_t *pudp)
 	set_pud(pudp, __pud(0));
 }
 
-static inline unsigned long pud_page_vaddr(pud_t pud)
+static inline pmd_t *pud_pgtable(pud_t pud)
 {
-	return (unsigned long)pfn_to_virt(pud_val(pud) >> _PAGE_PFN_SHIFT);
+	return (pmd_t *)pfn_to_virt(pud_val(pud) >> _PAGE_PFN_SHIFT);
 }
 
 static inline struct page *pud_page(pud_t pud)

@@ -32,9 +32,9 @@ typedef struct { unsigned long long pmd; } pmd_t;
 #define pmd_val(x)	((x).pmd)
 #define __pmd(x)	((pmd_t) { (x) } )
 
-static inline unsigned long pud_page_vaddr(pud_t pud)
+static inline pmd_t *pud_pgtable(pud_t pud)
 {
-	return pud_val(pud);
+	return (pmd_t *)pud_val(pud);
 }
 
 /* only used by the stubbed out hugetlb gup code, should never be called */

@@ -152,13 +152,13 @@ static inline unsigned long pmd_page_vaddr(pmd_t pmd)
 	return (unsigned long)__nocache_va(v << 4);
 }
 
-static inline unsigned long pud_page_vaddr(pud_t pud)
+static inline pmd_t *pud_pgtable(pud_t pud)
 {
 	if (srmmu_device_memory(pud_val(pud))) {
 		return ~0;
 	} else {
 		unsigned long v = pud_val(pud) & SRMMU_PTD_PMASK;
-		return (unsigned long)__nocache_va(v << 4);
+		return (pmd_t *)__nocache_va(v << 4);
 	}
 }
 

@@ -845,18 +845,18 @@ static inline unsigned long pmd_page_vaddr(pmd_t pmd)
 	return ((unsigned long) __va(pfn << PAGE_SHIFT));
 }
 
-static inline unsigned long pud_page_vaddr(pud_t pud)
+static inline pmd_t *pud_pgtable(pud_t pud)
 {
 	pte_t pte = __pte(pud_val(pud));
 	unsigned long pfn;
 
 	pfn = pte_pfn(pte);
 
-	return ((unsigned long) __va(pfn << PAGE_SHIFT));
+	return ((pmd_t *) __va(pfn << PAGE_SHIFT));
 }
 
 #define pmd_page(pmd) 			virt_to_page((void *)pmd_page_vaddr(pmd))
-#define pud_page(pud) 			virt_to_page((void *)pud_page_vaddr(pud))
+#define pud_page(pud)			virt_to_page((void *)pud_pgtable(pud))
 #define pmd_clear(pmdp)			(pmd_val(*(pmdp)) = 0UL)
 #define pud_present(pud)		(pud_val(pud) != 0U)
 #define pud_clear(pudp)			(pud_val(*(pudp)) = 0UL)

@@ -84,7 +84,7 @@ static inline void pud_clear (pud_t *pud)
 }
 
 #define pud_page(pud) phys_to_page(pud_val(pud) & PAGE_MASK)
-#define pud_page_vaddr(pud) ((unsigned long) __va(pud_val(pud) & PAGE_MASK))
+#define pud_pgtable(pud) ((pmd_t *) __va(pud_val(pud) & PAGE_MASK))
 
 static inline unsigned long pte_pfn(pte_t pte)
 {

@@ -865,9 +865,9 @@ static inline int pud_present(pud_t pud)
 	return pud_flags(pud) & _PAGE_PRESENT;
 }
 
-static inline unsigned long pud_page_vaddr(pud_t pud)
+static inline pmd_t *pud_pgtable(pud_t pud)
 {
-	return (unsigned long)__va(pud_val(pud) & pud_pfn_mask(pud));
+	return (pmd_t *)__va(pud_val(pud) & pud_pfn_mask(pud));
 }
 
 /*

@@ -1134,7 +1134,7 @@ static void __unmap_pmd_range(pud_t *pud, pmd_t *pmd,
 			      unsigned long start, unsigned long end)
 {
 	if (unmap_pte_range(pmd, start, end))
-		if (try_to_free_pmd_page((pmd_t *)pud_page_vaddr(*pud)))
+		if (try_to_free_pmd_page(pud_pgtable(*pud)))
 			pud_clear(pud);
 }
 

@@ -1178,7 +1178,7 @@ static void unmap_pmd_range(pud_t *pud, unsigned long start, unsigned long end)
 	 * Try again to free the PMD page if haven't succeeded above.
 	 */
 	if (!pud_none(*pud))
-		if (try_to_free_pmd_page((pmd_t *)pud_page_vaddr(*pud)))
+		if (try_to_free_pmd_page(pud_pgtable(*pud)))
 			pud_clear(pud);
 }
 

@@ -797,7 +797,7 @@ int pud_free_pmd_page(pud_t *pud, unsigned long addr)
 	pte_t *pte;
 	int i;
 
-	pmd = (pmd_t *)pud_page_vaddr(*pud);
+	pmd = pud_pgtable(*pud);
 	pmd_sv = (pmd_t *)__get_free_page(GFP_KERNEL);
 	if (!pmd_sv)
 		return 0;

@@ -51,7 +51,7 @@ static inline pmd_t * pmd_offset(pud_t * pud, unsigned long address)
 #define __pmd(x)				((pmd_t) { __pud(x) } )
 
 #define pud_page(pud)				(pmd_page((pmd_t){ pud }))
-#define pud_page_vaddr(pud)			(pmd_page_vaddr((pmd_t){ pud }))
+#define pud_pgtable(pud)			((pmd_t *)(pmd_page_vaddr((pmd_t){ pud })))
 
 /*
  * allocating and freeing a pmd is trivial: the 1-entry pmd is

@@ -49,7 +49,7 @@ static inline pud_t *pud_offset(p4d_t *p4d, unsigned long address)
 #define __pud(x)				((pud_t) { __p4d(x) })
 
 #define p4d_page(p4d)				(pud_page((pud_t){ p4d }))
-#define p4d_page_vaddr(p4d)			(pud_page_vaddr((pud_t){ p4d }))
+#define p4d_page_vaddr(p4d)			(pud_pgtable((pud_t){ p4d }))
 
 /*
  * allocating and freeing a pud is trivial: the 1-entry pud is

@@ -88,7 +88,7 @@ static inline pte_t *pte_offset_kernel(pmd_t *pmd, unsigned long address)
 #ifndef pmd_offset
 static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address)
 {
-	return (pmd_t *)pud_page_vaddr(*pud) + pmd_index(address);
+	return pud_pgtable(*pud) + pmd_index(address);
 }
 #define pmd_offset pmd_offset
 #endif