linux-kernel - [patch 050/149] mm: hugetlb: fix clear_huge

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Message-Id: <20100701173211.009400014@clark.site>
Date:	Thu, 01 Jul 2010 10:31:16 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Andrea Arcangeli <aarcange@...hat.com>,
	David Gibson <dwg@....ibm.com>, Mel Gorman <mel@....ul.ie>,
	David Rientjes <rientjes@...gle.com>,
	Lee Schermerhorn <lee.schermerhorn@...com>
Subject: [patch 050/149] mm: hugetlb: fix clear_huge_page()

2.6.32-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Andrea Arcangeli <aarcange@...hat.com>

commit 74dbdd239bb1348ad86d28b18574d9c1f28b62ca upstream.

sz is in bytes, MAX_ORDER_NR_PAGES is in pages.

Signed-off-by: Andrea Arcangeli <aarcange@...hat.com>
Acked-by: David Gibson <dwg@....ibm.com>
Cc: Mel Gorman <mel@....ul.ie>
Cc: David Rientjes <rientjes@...gle.com>
Cc: Lee Schermerhorn <lee.schermerhorn@...com>
Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 mm/hugetlb.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -401,7 +401,7 @@ static void clear_huge_page(struct page
 {
 	int i;
 
-	if (unlikely(sz > MAX_ORDER_NR_PAGES)) {
+	if (unlikely(sz/PAGE_SIZE > MAX_ORDER_NR_PAGES)) {
 		clear_gigantic_page(page, addr, sz);
 		return;
 	}


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