[patch sched/numa] mm/mpol: Fix build warning for UMA kernels

[David Rientjes]

"mm, mpol: Use special PROT_NONE to migrate pages" causes a build warning
when CONFIG_NUMA is not enabled:

mm/huge_memory.c: In function 'do_huge_pmd_prot_none':
mm/huge_memory.c:745: warning: unused variable 'node'

"node" is only used once, so avoid using it altogether.

Signed-off-by: David Rientjes <rientjes@xxxxxxxxxx>
---
 mm/huge_memory.c |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -742,7 +742,6 @@ void do_huge_pmd_prot_none(struct mm_struct *mm, struct vm_area_struct *vma,
 {
 	unsigned long haddr = address & HPAGE_PMD_MASK;
 	struct page *page = NULL;
-	int node;
 
 	spin_lock(&mm->page_table_lock);
 	if (unlikely(!pmd_same(*pmd, entry)))
@@ -765,8 +764,7 @@ void do_huge_pmd_prot_none(struct mm_struct *mm, struct vm_area_struct *vma,
 	 * XXX should we serialize against split_huge_page ?
 	 */
 
-	node = mpol_misplaced(page, vma, haddr, mm->numa_big);
-	if (node == -1)
+	if (mpol_misplaced(page, vma, haddr, mm->numa_big) == -1)
 		goto do_fixup;
 
 	/*
--
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