From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ea0-f172.google.com (mail-ea0-f172.google.com [209.85.215.172]) by kanga.kvack.org (Postfix) with ESMTP id A75236B003C for ; Tue, 3 Dec 2013 03:52:08 -0500 (EST) Received: by mail-ea0-f172.google.com with SMTP id q10so9863808ead.3 for ; Tue, 03 Dec 2013 00:52:08 -0800 (PST) Received: from mx2.suse.de (cantor2.suse.de. [195.135.220.15]) by mx.google.com with ESMTP id p9si2261622eey.70.2013.12.03.00.52.07 for ; Tue, 03 Dec 2013 00:52:08 -0800 (PST) From: Mel Gorman Subject: [PATCH 06/15] mm: Clear pmd_numa before invalidating Date: Tue, 3 Dec 2013 08:51:53 +0000 Message-Id: <1386060721-3794-7-git-send-email-mgorman@suse.de> In-Reply-To: <1386060721-3794-1-git-send-email-mgorman@suse.de> References: <1386060721-3794-1-git-send-email-mgorman@suse.de> Sender: owner-linux-mm@kvack.org List-ID: To: Alex Thorlton Cc: Rik van Riel , Linux-MM , LKML , Mel Gorman pmdp_invalidate clears the present bit without taking into account that it might be in the _PAGE_NUMA bit leaving the PMD in an unexpected state. Clear pmd_numa before invalidating. Signed-off-by: Mel Gorman --- mm/pgtable-generic.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/mm/pgtable-generic.c b/mm/pgtable-generic.c index 3929a40..a7aefd3 100644 --- a/mm/pgtable-generic.c +++ b/mm/pgtable-generic.c @@ -191,6 +191,9 @@ pgtable_t pgtable_trans_huge_withdraw(struct mm_struct *mm, pmd_t *pmdp) void pmdp_invalidate(struct vm_area_struct *vma, unsigned long address, pmd_t *pmdp) { + pmd_t entry = *pmdp; + if (pmd_numa(entry)) + entry = pmd_mknonnuma(entry); set_pmd_at(vma->vm_mm, address, pmdp, pmd_mknotpresent(*pmdp)); flush_tlb_range(vma, address, address + HPAGE_PMD_SIZE); } -- 1.8.4 -- 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