From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx104.postini.com [74.125.245.104]) by kanga.kvack.org (Postfix) with SMTP id 53A7C6B007E for ; Mon, 26 Mar 2012 14:57:13 -0400 (EDT) From: Andrea Arcangeli Subject: [PATCH 28/39] autonuma: follow_page check for pte_numa/pmd_numa Date: Mon, 26 Mar 2012 19:46:15 +0200 Message-Id: <1332783986-24195-29-git-send-email-aarcange@redhat.com> In-Reply-To: <1332783986-24195-1-git-send-email-aarcange@redhat.com> References: <1332783986-24195-1-git-send-email-aarcange@redhat.com> Sender: owner-linux-mm@kvack.org List-ID: To: linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: Hillf Danton , Dan Smith , Peter Zijlstra , Linus Torvalds , Andrew Morton , Thomas Gleixner , Ingo Molnar , Paul Turner , Suresh Siddha , Mike Galbraith , "Paul E. McKenney" , Lai Jiangshan , Bharata B Rao , Lee Schermerhorn , Rik van Riel , Johannes Weiner Without this, follow_page wouldn't trigger the NUMA hinting faults. Signed-off-by: Andrea Arcangeli --- mm/memory.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/memory.c b/mm/memory.c index eac888a..a0f35cd 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -1486,7 +1486,7 @@ struct page *follow_page(struct vm_area_struct *vma, unsigned long address, goto no_page_table; pmd = pmd_offset(pud, address); - if (pmd_none(*pmd)) + if (pmd_none(*pmd) || pmd_numa(*pmd)) goto no_page_table; if (pmd_huge(*pmd) && vma->vm_flags & VM_HUGETLB) { BUG_ON(flags & FOLL_GET); @@ -1520,7 +1520,7 @@ split_fallthrough: ptep = pte_offset_map_lock(mm, pmd, address, &ptl); pte = *ptep; - if (!pte_present(pte)) + if (!pte_present(pte) || pte_numa(pte)) goto no_page; if ((flags & FOLL_WRITE) && !pte_write(pte)) goto unlock; -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org