Merge k:/home/torvalds/BK/linux-2.5/

into elte.hu:/home/mingo/BK/mine/linux-2.5

drivers/char/drm/drm_scatter.h

@@ -68,7 +68,7 @@ int DRM(sg_alloc)( struct inode *inode, struct file *filp,
 	unsigned long pages, i, j;
 	pgd_t *pgd;
 	pmd_t *pmd;
-	pte_t *pte;
+	pte_t *pte, pte_entry;
 
 	DRM_DEBUG( "%s\n", __FUNCTION__ );
 
@@ -144,18 +144,17 @@ int DRM(sg_alloc)( struct inode *inode, struct file *filp,
 			goto failed;
 
 		preempt_disable();
-		pte = pte_offset_map( pmd, i );
-		if ( !pte_present( *pte ) ) {
-			pte_unmap(pte);
-			preempt_enable();
-			goto failed;
-		}
+		pte = pte_offset_map(pmd, i);
+		pte_entry = *pte;
 		pte_unmap(pte);
 		preempt_enable();
 
-		entry->pagelist[j] = pte_page( *pte );
+		if (!pte_present(pte_entry))
+			goto failed;
+
+		entry->pagelist[j] = pte_page(pte_entry);
 
-		SetPageReserved( entry->pagelist[j] );
+		SetPageReserved(entry->pagelist[j]);
 	}
 
 	request.handle = entry->handle;

drivers/char/drm/drm_vm.h

@@ -154,7 +154,7 @@ struct page *DRM(vm_shm_nopage)(struct vm_area_struct *vma,
 	unsigned long	 i;
 	pgd_t		 *pgd;
 	pmd_t		 *pmd;
-	pte_t		 *pte;
+	pte_t		 *pte, entry;
 	struct page	 *page;
 
 	if (address > vma->vm_end) return NOPAGE_SIGBUS; /* Disallow mremap */
@@ -166,20 +166,22 @@ struct page *DRM(vm_shm_nopage)(struct vm_area_struct *vma,
 	 * they need to be virtually contiguous in kernel space.
 	 */
 	pgd = pgd_offset_k( i );
-	if( !pgd_present( *pgd ) ) return NOPAGE_OOM;
+	if (!pgd_present(*pgd))
+		goto oom;
 	pmd = pmd_offset( pgd, i );
-	if( !pmd_present( *pmd ) ) return NOPAGE_OOM;
+	if (!pmd_present(*pmd))
+		goto oom;
+
 	preempt_disable();
-	pte = pte_offset_map( pmd, i );
-	if( !pte_present( *pte ) ) {
-		pte_unmap(pte);
-		preempt_enable();
-		return NOPAGE_OOM;
-	}
+	pte = pte_offset_map(pmd, i);
+	entry = *pte;
 	pte_unmap(pte);
 	preempt_enable();
 
-	page = pte_page(*pte);
+	if (!pte_present(entry))
+		goto oom;
+
+	page = pte_page(entry);
 	get_page(page);
 
 	DRM_DEBUG("shm_nopage 0x%lx\n", address);
@@ -188,6 +190,8 @@ struct page *DRM(vm_shm_nopage)(struct vm_area_struct *vma,
 #else
 	return page;
 #endif
+oom:
+	return NOPAGE_OOM;
 }
 
 /* Special close routine which deletes map information if we are the last

drivers/ieee1394/video1394.c

@@ -177,7 +177,7 @@ static inline unsigned long uvirt_to_bus(unsigned long adr)
 {
         unsigned long kva, ret;
 
-        kva = page_address(vmalloc_to_page(pgd_offset(current->mm, adr), adr));
+        kva = page_address(vmalloc_to_page(adr));
 	ret = virt_to_bus((void *)kva);
         MDEBUG(printk("uv2b(%lx-->%lx)", adr, ret));
         return ret;
@@ -188,7 +188,7 @@ static inline unsigned long kvirt_to_bus(unsigned long adr)
         unsigned long va, kva, ret;
 
         va = VMALLOC_VMADDR(adr);
-	kva = page_address(vmalloc_to_page(pgd_offset_k(va), va));
+	kva = page_address(vmalloc_to_page(va));
 	ret = virt_to_bus((void *)kva);
         MDEBUG(printk("kv2b(%lx-->%lx)", adr, ret));
         return ret;
@@ -203,7 +203,7 @@ static inline unsigned long kvirt_to_pa(unsigned long adr)
         unsigned long va, kva, ret;
 
         va = VMALLOC_VMADDR(adr);
-	kva = page_address(vmalloc_to_page(pgd_offset_k(va), va));
+	kva = page_address(vmalloc_to_page(va));
 	ret = __pa(kva);
         MDEBUG(printk("kv2pa(%lx-->%lx)", adr, ret));
         return ret;

drivers/media/video/bttv-driver.c

@@ -145,7 +145,7 @@ static inline unsigned long uvirt_to_bus(unsigned long adr)
 {
         unsigned long kva, ret;
 
-	kva = page_address(vmalloc_to_page(pgd_offset(current->mm, adr), adr));
+	kva = page_address(vmalloc_to_page(adr));
 	ret = virt_to_bus((void *)kva);
         MDEBUG(printk("uv2b(%lx-->%lx)", adr, ret));
         return ret;
@@ -156,7 +156,7 @@ static inline unsigned long kvirt_to_bus(unsigned long adr)
         unsigned long va, kva, ret;
 
         va = VMALLOC_VMADDR(adr);
-	kva = page_address(vmalloc_to_page(pgd_offset_k(va), va));
+	kva = page_address(vmalloc_to_page(va));
 	ret = virt_to_bus((void *)kva);
         MDEBUG(printk("kv2b(%lx-->%lx)", adr, ret));
         return ret;
@@ -171,7 +171,7 @@ static inline unsigned long kvirt_to_pa(unsigned long adr)
         unsigned long va, kva, ret;
 
         va = VMALLOC_VMADDR(adr);
-	kva = page_address(vmalloc_to_page(pgd_offset_k(va), va));
+	kva = page_address(vmalloc_to_page(va));
 	ret = __pa(kva);
         MDEBUG(printk("kv2pa(%lx-->%lx)", adr, ret));
         return ret;

drivers/media/video/cpia.c

@@ -189,7 +189,7 @@ static inline unsigned long kvirt_to_pa(unsigned long adr)
 	unsigned long va, kva, ret;
 
 	va = VMALLOC_VMADDR(adr);
-	kva = page_address(vmalloc_to_page(pgd_offset_k(va), va));
+	kva = page_address(vmalloc_to_page(va));
 	ret = __pa(kva);
 	return ret;
 }

drivers/media/video/meye.c

@@ -126,7 +126,7 @@ static inline unsigned long kvirt_to_pa(unsigned long adr) {
         unsigned long va, kva, ret;
 
         va = VMALLOC_VMADDR(adr);
-        kva = page_address(vmalloc_to_page(pgd_offset_k(va), va));
+        kva = page_address(vmalloc_to_page(va));
 	ret = __pa(kva);
         MDEBUG(printk("kv2pa(%lx-->%lx)\n", adr, ret));
         return ret;

drivers/usb/ov511.c

@@ -383,7 +383,7 @@ kvirt_to_pa(unsigned long adr)
 	unsigned long va, kva, ret;
 
 	va = VMALLOC_VMADDR(adr);
-	kva = page_address(vmalloc_to_page(pgd_offset_k(va), va));
+	kva = page_address(vmalloc_to_page(va));
 	ret = __pa(kva);
 	return ret;
 }

drivers/usb/pwc-if.c

@@ -187,7 +187,7 @@ static inline unsigned long kvirt_to_pa(unsigned long adr)
         unsigned long va, kva, ret;
 
         va = VMALLOC_VMADDR(adr);
-	kva = page_address(vmalloc_to_page(pgd_offset_k(va), va));
+	kva = page_address(vmalloc_to_page(va));
 	ret = __pa(kva);
         return ret;
 }

drivers/usb/se401.c

@@ -92,7 +92,7 @@ static inline unsigned long kvirt_to_pa(unsigned long adr)
 	unsigned long va, kva, ret;
 
 	va = VMALLOC_VMADDR(adr);
-	kva = page_address(vmalloc_to_page(pgd_offset_k(va), va));
+	kva = page_address(vmalloc_to_page(va));
 	ret = __pa(kva);
 	return ret;
 }

drivers/usb/usbvideo.c

@@ -71,7 +71,7 @@ unsigned long usbvideo_kvirt_to_pa(unsigned long adr)
 	unsigned long va, kva, ret;
 
 	va = VMALLOC_VMADDR(adr);
-	kva = page_address(vmalloc_to_page(pgd_offset_k(va), va));
+	kva = page_address(vmalloc_to_page(va));
 	ret = __pa(kva);
 	MDEBUG(printk("kv2pa(%lx-->%lx)", adr, ret));
 	return ret;

include/asm-i386/pgtable.h

@@ -342,10 +342,10 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
 	((pte_t *) pmd_page_kernel(*(dir)) +  __pte_offset(address))
 #define pte_offset_map(dir, address) \
 	((pte_t *)kmap_atomic(pmd_page(*(dir)),KM_PTE0) + __pte_offset(address))
-#define pte_offset_map2(dir, address) \
+#define pte_offset_map_nested(dir, address) \
 	((pte_t *)kmap_atomic(pmd_page(*(dir)),KM_PTE1) + __pte_offset(address))
 #define pte_unmap(pte) kunmap_atomic(pte, KM_PTE0)
-#define pte_unmap2(pte) kunmap_atomic(pte, KM_PTE1)
+#define pte_unmap_nested(pte) kunmap_atomic(pte, KM_PTE1)
 
 /*
  * The i386 doesn't have any external MMU info: the kernel page

include/linux/mm.h

@@ -514,7 +514,7 @@ static inline struct vm_area_struct * find_vma_intersection(struct mm_struct * m
 
 extern struct vm_area_struct *find_extend_vma(struct mm_struct *mm, unsigned long addr);
 
-extern struct page * vmalloc_to_page(pgd_t *pgd, unsigned long adr);
+extern struct page * vmalloc_to_page(unsigned long adr);
 
 #endif /* __KERNEL__ */
 

mm/memory.c

@@ -261,7 +261,7 @@ skip_copy_pte_range:		address = (address + PMD_SIZE) & PMD_MASK;
 			if (!dst_pte)
 				goto nomem;
 			spin_lock(&src->page_table_lock);			
-			src_pte = pte_offset_map2(src_pmd, address);
+			src_pte = pte_offset_map_nested(src_pmd, address);
 			do {
 				pte_t pte = *src_pte;
 				struct page *ptepage;
@@ -295,14 +295,14 @@ skip_copy_pte_range:		address = (address + PMD_SIZE) & PMD_MASK;
 cont_copy_pte_range:		set_pte(dst_pte, pte);
 cont_copy_pte_range_noset:	address += PAGE_SIZE;
 				if (address >= end) {
-					pte_unmap2(src_pte);
+					pte_unmap_nested(src_pte);
 					pte_unmap(dst_pte);
 					goto out_unlock;
 				}
 				src_pte++;
 				dst_pte++;
 			} while ((unsigned long)src_pte & PTE_TABLE_MASK);
-			pte_unmap2(src_pte-1);
+			pte_unmap_nested(src_pte-1);
 			pte_unmap(dst_pte-1);
 			spin_unlock(&src->page_table_lock);
 		
@@ -1475,9 +1475,10 @@ int make_pages_present(unsigned long addr, unsigned long end)
 /* 
  * Map a vmalloc()-space virtual address to the physical page.
  */
-struct page * vmalloc_to_page(pgd_t *pgd, unsigned long addr)
+struct page * vmalloc_to_page(unsigned long addr)
 {
 	struct page *page = NULL;
+	pgd_t *pgd = pgd_offset_k(addr);
 	pmd_t *pmd;
 	pte_t *ptep, pte;
   

mm/mremap.c

@@ -17,7 +17,7 @@
 
 extern int vm_enough_memory(long pages);
 
-static inline pte_t *get_one_pte_map2(struct mm_struct *mm, unsigned long addr)
+static inline pte_t *get_one_pte_map_nested(struct mm_struct *mm, unsigned long addr)
 {
 	pgd_t * pgd;
 	pmd_t * pmd;
@@ -41,9 +41,9 @@ static inline pte_t *get_one_pte_map2(struct mm_struct *mm, unsigned long addr)
 		goto end;
 	}
 
-	pte = pte_offset_map2(pmd, addr);
+	pte = pte_offset_map_nested(pmd, addr);
 	if (pte_none(*pte)) {
-		pte_unmap2(pte);
+		pte_unmap_nested(pte);
 		pte = NULL;
 	}
 end:
@@ -84,11 +84,11 @@ static int move_one_page(struct mm_struct *mm, unsigned long old_addr, unsigned
 	pte_t *src, *dst;
 
 	spin_lock(&mm->page_table_lock);
-	src = get_one_pte_map2(mm, old_addr);
+	src = get_one_pte_map_nested(mm, old_addr);
 	if (src) {
 		dst = alloc_one_pte_map(mm, new_addr);
 		error = copy_one_pte(mm, src, dst);
-		pte_unmap2(src);
+		pte_unmap_nested(src);
 		pte_unmap(dst);
 	}
 	spin_unlock(&mm->page_table_lock);