uio: nopage
Nick Piggin [Wed, 6 Feb 2008 09:37:35 +0000 (01:37 -0800)]
Convert uio from nopage to fault.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Acked-by: Hans J Koch <hjk@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

drivers/uio/uio.c

index cc246fa..2a77e9d 100644 (file)
@@ -417,30 +417,28 @@ static void uio_vma_close(struct vm_area_struct *vma)
        idev->vma_count--;
 }
 
-static struct page *uio_vma_nopage(struct vm_area_struct *vma,
-                                  unsigned long address, int *type)
+static int uio_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
 {
        struct uio_device *idev = vma->vm_private_data;
-       struct page* page = NOPAGE_SIGBUS;
+       struct page *page;
 
        int mi = uio_find_mem_index(vma);
        if (mi < 0)
-               return page;
+               return VM_FAULT_SIGBUS;
 
        if (idev->info->mem[mi].memtype == UIO_MEM_LOGICAL)
                page = virt_to_page(idev->info->mem[mi].addr);
        else
                page = vmalloc_to_page((void*)idev->info->mem[mi].addr);
        get_page(page);
-       if (type)
-               *type = VM_FAULT_MINOR;
-       return page;
+       vmf->page = page;
+       return 0;
 }
 
 static struct vm_operations_struct uio_vm_ops = {
        .open = uio_vma_open,
        .close = uio_vma_close,
-       .nopage = uio_vma_nopage,
+       .fault = uio_vma_fault,
 };
 
 static int uio_mmap_physical(struct vm_area_struct *vma)