From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx192.postini.com [74.125.245.192]) by kanga.kvack.org (Postfix) with SMTP id 29D326B00ED for ; Fri, 25 May 2012 13:03:12 -0400 (EDT) From: Andrea Arcangeli Subject: [PATCH 24/35] autonuma: follow_page check for pte_numa/pmd_numa Date: Fri, 25 May 2012 19:02:28 +0200 Message-Id: <1337965359-29725-25-git-send-email-aarcange@redhat.com> In-Reply-To: <1337965359-29725-1-git-send-email-aarcange@redhat.com> References: <1337965359-29725-1-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 , Srivatsa Vaddagiri , Christoph Lameter 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 7f265fc..e3aa47c 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -1483,7 +1483,7 @@ 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); @@ -1517,7 +1517,7 @@ 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