linux-kernel - [PATCH 6/8] mm/hugetlb.c: simplify PageHeadHuge() and PageHuge()

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Date:	Wed, 20 Nov 2013 18:51:14 +0100
From:	Andrea Arcangeli <aarcange@...hat.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	Khalid Aziz <khalid.aziz@...cle.com>,
	Pravin Shelar <pshelar@...ira.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Ben Hutchings <bhutchings@...arflare.com>,
	Christoph Lameter <cl@...ux.com>,
	Johannes Weiner <jweiner@...hat.com>,
	Mel Gorman <mgorman@...e.de>, Rik van Riel <riel@...hat.com>,
	Andi Kleen <andi@...stfloor.org>,
	Minchan Kim <minchan@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: [PATCH 6/8] mm/hugetlb.c: simplify PageHeadHuge() and PageHuge()

From: Andrew Morton <akpm@...ux-foundation.org>

Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
Signed-off-by: Andrea Arcangeli <aarcange@...hat.com>
---
 mm/hugetlb.c | 12 ++----------
 1 file changed, 2 insertions(+), 10 deletions(-)

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index f03e068..9b8a14b 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -724,15 +724,11 @@ static void prep_compound_gigantic_page(struct page *page, unsigned long order)
  */
 int PageHuge(struct page *page)
 {
-	compound_page_dtor *dtor;
-
 	if (!PageCompound(page))
 		return 0;
 
 	page = compound_head(page);
-	dtor = get_compound_page_dtor(page);
-
-	return dtor == free_huge_page;
+	return get_compound_page_dtor(page) == free_huge_page;
 }
 EXPORT_SYMBOL_GPL(PageHuge);
 
@@ -742,14 +738,10 @@ EXPORT_SYMBOL_GPL(PageHuge);
  */
 int PageHeadHuge(struct page *page_head)
 {
-	compound_page_dtor *dtor;
-
 	if (!PageHead(page_head))
 		return 0;
 
-	dtor = get_compound_page_dtor(page_head);
-
-	return dtor == free_huge_page;
+	return get_compound_page_dtor(page_head) == free_huge_page;
 }
 EXPORT_SYMBOL_GPL(PageHeadHuge);
 
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