From 9a5b489b870def9a93f5e89dac03ebe136f901db Mon Sep 17 00:00:00 2001
From: Andrea Arcangeli <aarcange@redhat.com>
Date: Mon, 9 Aug 2010 17:19:49 -0700
Subject: [PATCH] mm: set VM_FAULT_WRITE in do_swap_page()

Set the flag if do_swap_page is decowing the page the same way do_wp_page
would too.

Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 mm/memory.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/memory.c b/mm/memory.c
index 6bc039486e9f..1ecca56e0a48 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2723,6 +2723,7 @@ static int do_swap_page(struct mm_struct *mm, struct vm_area_struct *vma,
 	if ((flags & FAULT_FLAG_WRITE) && reuse_swap_page(page)) {
 		pte = maybe_mkwrite(pte_mkdirty(pte), vma);
 		flags &= ~FAULT_FLAG_WRITE;
+		ret |= VM_FAULT_WRITE;
 		exclusive = 1;
 	}
 	flush_icache_page(vma, page);
-- 
2.20.1