From: Brice Goglin <Brice.Goglin@inria.fr>

pp->page is never used when not set to the right page, so there is no need
to set it to ZERO_PAGE(0) by default.

Signed-off-by: Brice Goglin <Brice.Goglin@inria.fr>
Acked-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/migrate.c |    6 ------
 1 file changed, 6 deletions(-)

diff -puN mm/migrate.c~mm-move_pages-no-need-to-set-pp-page-to-zero_page0-by-default mm/migrate.c
--- a/mm/migrate.c~mm-move_pages-no-need-to-set-pp-page-to-zero_page0-by-default
+++ a/mm/migrate.c
@@ -846,12 +846,6 @@ static int do_move_page_to_node_array(st
 		struct vm_area_struct *vma;
 		struct page *page;
 
-		/*
-		 * A valid page pointer that will not match any of the
-		 * pages that will be moved.
-		 */
-		pp->page = ZERO_PAGE(0);
-
 		err = -EFAULT;
 		vma = find_vma(mm, pp->addr);
 		if (!vma || !vma_migratable(vma))
_