linux-kernel - [PATCH 5/5] mm: move_pages: no need to set pp->page to ZERO

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Date:	Mon, 13 Oct 2008 22:23:33 +0200
From:	Brice Goglin <Brice.Goglin@...ia.fr>
To:	Christoph Lameter <cl@...ux-foundation.org>
CC:	LKML <linux-kernel@...r.kernel.org>, linux-mm@...ck.org,
	Andrew Morton <akpm@...l.org>,
	Nathalie Furmento <nathalie.furmento@...ri.fr>
Subject: [PATCH 5/5] mm: move_pages: no need to set pp->page to ZERO_PAGE(0)
 by default

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@...ia.fr>
---
 mm/migrate.c |    6 ------
 1 files changed, 0 insertions(+), 6 deletions(-)

diff --git a/mm/migrate.c b/mm/migrate.c
index 175e242..2453444 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -878,12 +878,6 @@ static int do_move_page_to_node_array(struct mm_struct *mm,
 		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))
-- 
1.5.6.5



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