From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pd0-f180.google.com (mail-pd0-f180.google.com [209.85.192.180]) by kanga.kvack.org (Postfix) with ESMTP id 3925A6B0092 for ; Thu, 23 Apr 2015 17:05:14 -0400 (EDT) Received: by pdbqd1 with SMTP id qd1so28634475pdb.2 for ; Thu, 23 Apr 2015 14:05:14 -0700 (PDT) Received: from mga03.intel.com (mga03.intel.com. [134.134.136.65]) by mx.google.com with ESMTP id xt6si14192368pbc.59.2015.04.23.14.05.01 for ; Thu, 23 Apr 2015 14:05:01 -0700 (PDT) From: "Kirill A. Shutemov" Subject: [PATCHv5 21/28] mm, numa: skip PTE-mapped THP on numa fault Date: Fri, 24 Apr 2015 00:03:56 +0300 Message-Id: <1429823043-157133-22-git-send-email-kirill.shutemov@linux.intel.com> In-Reply-To: <1429823043-157133-1-git-send-email-kirill.shutemov@linux.intel.com> References: <1429823043-157133-1-git-send-email-kirill.shutemov@linux.intel.com> Sender: owner-linux-mm@kvack.org List-ID: To: Andrew Morton , Andrea Arcangeli , Hugh Dickins Cc: Dave Hansen , Mel Gorman , Rik van Riel , Vlastimil Babka , Christoph Lameter , Naoya Horiguchi , Steve Capper , "Aneesh Kumar K.V" , Johannes Weiner , Michal Hocko , Jerome Marchand , Sasha Levin , linux-kernel@vger.kernel.org, linux-mm@kvack.org, "Kirill A. Shutemov" We're going to have THP mapped with PTEs. It will confuse numabalancing. Let's skip them for now. Signed-off-by: Kirill A. Shutemov Tested-by: Sasha Levin --- mm/memory.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/mm/memory.c b/mm/memory.c index 0b295f7094b1..68c6002ee8ba 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -3135,6 +3135,12 @@ static int do_numa_page(struct mm_struct *mm, struct vm_area_struct *vma, return 0; } + /* TODO: handle PTE-mapped THP */ + if (PageCompound(page)) { + pte_unmap_unlock(ptep, ptl); + return 0; + } + /* * Avoid grouping on RO pages in general. RO pages shouldn't hurt as * much anyway since they can be in shared cache state. This misses -- 2.1.4 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org