NFS: Replace file->private_data with calls to nfs_file_open_context()

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index fb396ea..3e9e268 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -667,7 +667,7 @@
 
 int nfs_flush_incompatible(struct file *file, struct page *page)
 {
-	struct nfs_open_context *ctx = (struct nfs_open_context *)file->private_data;
+	struct nfs_open_context *ctx = nfs_file_open_context(file);
 	struct nfs_page	*req;
 	int do_flush, status;
 	/*
@@ -701,7 +701,7 @@
 int nfs_updatepage(struct file *file, struct page *page,
 		unsigned int offset, unsigned int count)
 {
-	struct nfs_open_context *ctx = (struct nfs_open_context *)file->private_data;
+	struct nfs_open_context *ctx = nfs_file_open_context(file);
 	struct inode	*inode = page->mapping->host;
 	int		status = 0;