From d6d03f9158516b50d0d343158e3f33bcff1e4ca5 Mon Sep 17 00:00:00 2001
From: Albert Herranz <albert_herranz@yahoo.es>
Date: Fri, 4 Jun 2010 14:14:57 -0700
Subject: [PATCH] fb_defio: redo fix for non-dirty ptes

As pointed by Nick Piggin, ->page_mkwrite provides a way to keep a page
locked until the associated PTE is marked dirty.

Re-implement the fix by using this mechanism.

Signed-off-by: Albert Herranz <albert_herranz@yahoo.es>
Acked-by: Jaya Kumar <jayakumar.lkml@gmail.com>
Acked-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Reading git-format-patch failed