PPC32: Add struct page * argument to copy/clear_user_page.

arch/ppc/mm/init.c

@@ -559,18 +559,19 @@ void flush_icache_page(struct vm_area_struct *vma, struct page *page)
 
 	if (page->mapping && !PageReserved(page)
 	    && !test_bit(PG_arch_1, &page->flags)) {
-		phys = ((page - mem_map) << PAGE_SHIFT) + PPC_MEMSTART;
+		phys = page_to_pfn(page) << PAGE_SHIFT;
 		__flush_dcache_icache_phys(phys);
 		set_bit(PG_arch_1, &page->flags);
 	}
 }
 
-void clear_user_page(void *page, unsigned long vaddr)
+void clear_user_page(void *page, unsigned long vaddr, struct page *pg)
 {
 	clear_page(page);
 }
 
-void copy_user_page(void *vto, void *vfrom, unsigned long vaddr)
+void copy_user_page(void *vto, void *vfrom, unsigned long vaddr,
+		    struct page *pg)
 {
 	copy_page(vto, vfrom);
 	__flush_dcache_icache(vto);

include/asm-ppc/page.h

@@ -85,10 +85,12 @@ typedef unsigned long pgprot_t;
 /* to align the pointer to the (next) page boundary */
 #define PAGE_ALIGN(addr)	(((addr)+PAGE_SIZE-1)&PAGE_MASK)
 
+struct page;
 extern void clear_page(void *page);
 extern void copy_page(void *to, void *from);
-extern void clear_user_page(void *page, unsigned long vaddr);
-extern void copy_user_page(void *to, void *from, unsigned long vaddr);
+extern void clear_user_page(void *page, unsigned long vaddr, struct page *pg);
+extern void copy_user_page(void *to, void *from, unsigned long vaddr,
+			   struct page *pg);
 
 #ifndef CONFIG_APUS
 #define PPC_MEMSTART	0