From 2f38ab2c3c7fef04dca0313fd89d91f142ca9281 Mon Sep 17 00:00:00 2001
From: Shachar Raindel <raindel@mellanox.com>
Date: Tue, 14 Apr 2015 15:46:32 -0700
Subject: [PATCH] mm: refactor do_wp_page, extract the page copy flow

In some cases, do_wp_page had to copy the page suffering a write fault
to a new location.  If the function logic decided that to do this, it
was done by jumping with a "goto" operation to the relevant code block.
This made the code really hard to understand.  It is also against the
kernel coding style guidelines.

This patch extracts the page copy and page table update logic to a
separate function.  It also clean up the naming, from "gotten" to
"wp_page_copy", and adds few comments.

Signed-off-by: Shachar Raindel <raindel@mellanox.com>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Haggai Eran <haggaie@mellanox.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Matthew Wilcox <matthew.r.wilcox@intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Peter Feiner <pfeiner@google.com>
Cc: Michel Lespinasse <walken@google.com>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
Reading git-format-patch failed