From c62789bae70f27f537d0a2e566dc9978c9dd6e7d Mon Sep 17 00:00:00 2001
From: Andrew Morton <akpm@linux-foundation.org>
Date: Wed, 5 Oct 2011 11:43:01 +1100
Subject: [PATCH] thp-mremap-support-and-tlb-optimization-fix-fix

Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <jweiner@redhat.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Rik van Riel <riel@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
 mm/huge_memory.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index b975dc1db24f..fffab174f3e7 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -1072,7 +1072,7 @@ int move_huge_pmd(struct vm_area_struct *vma, struct vm_area_struct *new_vma,
 	 * The destination pmd shouldn't be established, free_pgtables()
 	 * should have release it.
 	 */
-	if (!WARN_ON(pmd_none(*new_pmd))) {
+	if (WARN_ON(!pmd_none(*new_pmd))) {
 		VM_BUG_ON(pmd_trans_huge(*new_pmd));
 		goto out;
 	}
-- 
2.39.5