From f0d1bec9d58d4c038d0ac958c9af82be6eb18045 Mon Sep 17 00:00:00 2001
From: Al Viro <viro@zeniv.linux.org.uk>
Date: Thu, 3 Apr 2014 15:05:18 -0400
Subject: [PATCH] new helper: copy_page_from_iter()

parallel to copy_page_to_iter().  pipe_write() switched to it (and became
->write_iter()).

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
Reading git-format-patch failed