From baae911b27b8dbee6830f4e3ef0fcf4dc8e9c07b Mon Sep 17 00:00:00 2001
From: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Date: Thu, 23 Jan 2014 15:53:21 -0800
Subject: [PATCH] sched/numa: fix setting of cpupid on page migration twice
Commit 7851a45cd3f6 ("mm: numa: Copy cpupid on page migration") copiess
over the cpupid at page migration time. It is unnecessary to set it
again in migrate_misplaced_transhuge_page().
Signed-off-by: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Rik van Riel <riel@redhat.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
mm/migrate.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/mm/migrate.c b/mm/migrate.c
index 4b3996eb7f0f..734704f6f29b 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -1753,8 +1753,6 @@ int migrate_misplaced_transhuge_page(struct mm_struct *mm,
if (!new_page)
goto out_fail;
- page_cpupid_xchg_last(new_page, page_cpupid_last(page));
-
isolated = numamigrate_isolate_page(pgdat, page);
if (!isolated) {
put_page(new_page);
--
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