From: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Date: Tue, 28 Jan 2014 01:07:17 +0000 (-0800)
Subject: mm/migrate.c: fix setting of cpupid on page migration twice against normal page
X-Git-Tag: firefly_0821_release~176^2~4555^2~3
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=a3978a519461b095b776f44a86079f5448c96963;p=firefly-linux-kernel-4.4.55.git

mm/migrate.c: fix setting of cpupid on page migration twice against normal page

Commit 7851a45cd3f6 ("mm: numa: Copy cpupid on page migration") copies
over the cpupid at page migration time.  It is unnecessary to set it
again in alloc_misplaced_dst_page().

Signed-off-by: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/mm/migrate.c b/mm/migrate.c
index 734704f6f29b..482a33d89134 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -1548,8 +1548,6 @@ static struct page *alloc_misplaced_dst_page(struct page *page,
 					  __GFP_NOMEMALLOC | __GFP_NORETRY |
 					  __GFP_NOWARN) &
 					 ~GFP_IOFS, 0);
-	if (newpage)
-		page_cpupid_xchg_last(newpage, page_cpupid_last(page));
 
 	return newpage;
 }