nfs: generic_write_checks() shouldn't be done on swapout...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index 3d1b0d2..410abd1 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -452,8 +452,7 @@
 			struct iov_iter *iter,
 			loff_t pos);
 extern ssize_t nfs_file_direct_write(struct kiocb *iocb,
-			struct iov_iter *iter,
-			loff_t pos);
+			struct iov_iter *iter);
 
 /*
  * linux/fs/nfs/dir.c