linux-kernel - [PATCH 3/3] uio: vm_operations_struct ->nopage to ->fault method conversion

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Date:	Sat,  2 Feb 2008 17:51:37 +0800
From:	Denis Cheng <crquan@...il.com>
To:	"Hans J. Koch" <hjk@...utronix.de>,
	Greg Kroah-Hartman <gregkh@...e.de>
Cc:	linux-kernel@...r.kernel.org, cr_quan@....com
Subject: [PATCH 3/3] uio: vm_operations_struct ->nopage to ->fault method conversion

Signed-off-by: Denis Cheng <crquan@...il.com>
---
 drivers/uio/uio.c |   19 ++++++++-----------
 1 files changed, 8 insertions(+), 11 deletions(-)

diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index cc246fa..47e0c32 100644
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -417,30 +417,27 @@ 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;
 
 	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);
+		vmf->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 = vmalloc_to_page((void *)idev->info->mem[mi].addr);
+	get_page(vmf->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)
-- 
1.5.3.8

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