From: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Date: Wed, 11 Sep 2013 21:21:58 +0000 (-0700)
Subject: mm, hugetlb: return a reserved page to a reserved pool if failed
X-Git-Tag: v3.12-rc1~52^2~211
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=07443a85ad90c7b62fbe11dcd3d6a1de1e10516f;p=pandora-kernel.git

mm, hugetlb: return a reserved page to a reserved pool if failed

If we fail with a reserved page, just calling put_page() is not
sufficient, because put_page() invoke free_huge_page() at last step and it
doesn't know whether a page comes from a reserved pool or not.  So it
doesn't do anything related to reserved count.  This makes reserve count
lower than how we need, because reserve count already decrease in
dequeue_huge_page_vma().  This patch fix this situation.

Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Aneesh Kumar <aneesh.kumar@linux.vnet.ibm.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Davidlohr Bueso <davidlohr@hp.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Cc: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Cc: Hillf Danton <dhillf@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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