From: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Date: Fri, 10 Sep 2010 04:23:03 +0000 (+0900)
Subject: hugetlb, rmap: always use anon_vma root pointer
X-Git-Tag: v2.6.36-rc6~48
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=433abed6c6f76ca079a9564f2a1a51fd28ebe0ca;p=pandora-kernel.git

hugetlb, rmap: always use anon_vma root pointer

This patch applies Andrea's fix given by the following patch into hugepage
rmapping code:

  commit 288468c334e98aacbb7e2fb8bde6bc1adcd55e05
  Author: Andrea Arcangeli <aarcange@redhat.com>
  Date:   Mon Aug 9 17:19:09 2010 -0700

This patch uses anon_vma->root and avoids unnecessary overwriting when
anon_vma is already set up.

Signed-off-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Acked-by: Andrea Arcangeli <aarcange@redhat.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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