From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932785Ab2JZMxr (ORCPT ); Fri, 26 Oct 2012 08:53:47 -0400 Received: from mga03.intel.com ([143.182.124.21]:19649 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932694Ab2JZMxq (ORCPT ); Fri, 26 Oct 2012 08:53:46 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.80,654,1344236400"; d="scan'208";a="209663444" From: "Kirill A. Shutemov" To: linux-mm@kvack.org Cc: Will Deacon , "Kirill A. Shutemov" , Andrew Morton , Andrea Arcangeli , Xiao Guangrong , Ingo Molnar , Peter Zijlstra , linux-kernel@vger.kernel.org Subject: [PATCH 1/2] numa, mm: drop redundant check in do_huge_pmd_numa_page() Date: Fri, 26 Oct 2012 15:54:34 +0300 Message-Id: <1351256077-1594-1-git-send-email-kirill.shutemov@linux.intel.com> X-Mailer: git-send-email 1.7.10.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: "Kirill A. Shutemov" We check if the pmd entry is the same as on pmd_trans_huge() in handle_mm_fault(). That's enough. Signed-off-by: Kirill A. Shutemov --- mm/huge_memory.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 3c14a96..9bb2c23 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -758,12 +758,6 @@ void do_huge_pmd_numa_page(struct mm_struct *mm, struct vm_area_struct *vma, if (unlikely(!pmd_same(*pmd, entry))) goto unlock; - if (unlikely(pmd_trans_splitting(entry))) { - spin_unlock(&mm->page_table_lock); - wait_split_huge_page(vma->anon_vma, pmd); - return; - } - page = pmd_page(entry); if (page) { VM_BUG_ON(!PageCompound(page) || !PageHead(page)); -- 1.7.10.4