fs: cifs: new helper: file_inode(file)

Signed-off-by: Libo Chen <clbchenlibo.chen@huawei.com>
Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
diff --git a/fs/cifs/ioctl.c b/fs/cifs/ioctl.c
index 7749230..45cb59b 100644
--- a/fs/cifs/ioctl.c
+++ b/fs/cifs/ioctl.c
@@ -85,7 +85,7 @@
 		goto out_fput;
 	}
 
-	src_inode = src_file.file->f_dentry->d_inode;
+	src_inode = file_inode(src_file.file);
 
 	/*
 	 * Note: cifs case is easier than btrfs since server responsible for