V4L/DVB (6748): Subject: v4l: nopage

Convert v4l from nopage to fault.
Remove redundant vma range checks.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/videobuf-dma-sg.c

@@ -385,30 +385,26 @@ videobuf_vm_close(struct vm_area_struct *vma)
  * now ...).  Bounce buffers don't work very well for the data rates
  * video capture has.
  */
-static struct page*
-videobuf_vm_nopage(struct vm_area_struct *vma, unsigned long vaddr,
-		   int *type)
+static int
+videobuf_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 {
 	struct page *page;
 
-	dprintk(3,"nopage: fault @ %08lx [vma %08lx-%08lx]\n",
-		vaddr,vma->vm_start,vma->vm_end);
-	if (vaddr > vma->vm_end)
-		return NOPAGE_SIGBUS;
+	dprintk(3,"fault: fault @ %08lx [vma %08lx-%08lx]\n",
+		(unsigned long)vmf->virtual_address,vma->vm_start,vma->vm_end);
 	page = alloc_page(GFP_USER | __GFP_DMA32);
 	if (!page)
-		return NOPAGE_OOM;
+		return VM_FAULT_OOM;
 	clear_user_page(page_address(page), vaddr, page);
-	if (type)
-		*type = VM_FAULT_MINOR;
-	return page;
+	vmf->page = page;
+	return 0;
 }
 
 static struct vm_operations_struct videobuf_vm_ops =
 {
 	.open     = videobuf_vm_open,
 	.close    = videobuf_vm_close,
-	.nopage   = videobuf_vm_nopage,
+	.fault    = videobuf_vm_fault,
 };
 
 /* ---------------------------------------------------------------------