From: Rik van Riel <riel@redhat.com>
Date: Mon, 7 Oct 2013 10:29:23 +0000 (+0100)
Subject: mm: numa: Copy cpupid on page migration
X-Git-Tag: omap-for-v3.13/fixes-for-merge-window-take2~40^2~45
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7851a45cd3f6198bf542c30e27b330e8eeb3736c;p=pandora-kernel.git

mm: numa: Copy cpupid on page migration

After page migration, the new page has the nidpid unset. This makes
every fault on a recently migrated page look like a first numa fault,
leading to another page migration.

Copying over the nidpid at page migration time should prevent erroneous
migrations of recently migrated pages.

Signed-off-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Mel Gorman <mgorman@suse.de>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1381141781-10992-46-git-send-email-mgorman@suse.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---

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