From: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Date: Wed, 19 Jun 2013 00:06:15 +0000 (+1000)
Subject: mm/hugetlb: use already existing interface huge_page_shift
X-Git-Tag: next-20130619~2^2~486
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=472aee1e9818ed7ea3a0aa5438530b7804266476;p=karo-tx-linux.git

mm/hugetlb: use already existing interface huge_page_shift

Use the already existing interface huge_page_shift instead of h->order +
PAGE_SHIFT.

Signed-off-by: Wanpeng Li <liwanp@linux.vnet.ibm.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index 237c8e5f2640..cafec930d3ff 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -357,7 +357,7 @@ void add_gpage(u64 addr, u64 page_size, unsigned long number_of_pages)
 int alloc_bootmem_huge_page(struct hstate *hstate)
 {
 	struct huge_bootmem_page *m;
-	int idx = shift_to_mmu_psize(hstate->order + PAGE_SHIFT);
+	int idx = shift_to_mmu_psize(huge_page_shift(hstate));
 	int nr_gpages = gpage_freearray[idx].nr_gpages;
 
 	if (nr_gpages == 0)
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index dbd3d42ae031..46cf6faf03b3 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -319,7 +319,7 @@ unsigned long vma_kernel_pagesize(struct vm_area_struct *vma)
 
 	hstate = hstate_vma(vma);
 
-	return 1UL << (hstate->order + PAGE_SHIFT);
+	return 1UL << huge_page_shift(hstate);
 }
 EXPORT_SYMBOL_GPL(vma_kernel_pagesize);